KR101825926B1 - Organic binder composition for ceramic support of selective catalytic reduction catalyst and ceramic support for selective catalytic reduction catalyst including the same - Google Patents
Organic binder composition for ceramic support of selective catalytic reduction catalyst and ceramic support for selective catalytic reduction catalyst including the same Download PDFInfo
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- 239000000919 ceramic Substances 0.000 title claims abstract description 74
- 239000000203 mixture Substances 0.000 title claims abstract description 67
- 239000011230 binding agent Substances 0.000 title claims abstract description 45
- 239000003054 catalyst Substances 0.000 title claims abstract description 45
- 238000010531 catalytic reduction reaction Methods 0.000 title description 3
- 229920003086 cellulose ether Polymers 0.000 claims abstract description 28
- 239000000654 additive Substances 0.000 claims abstract description 10
- 230000000996 additive effect Effects 0.000 claims abstract description 10
- 239000004014 plasticizer Substances 0.000 claims description 17
- 239000004094 surface-active agent Substances 0.000 claims description 15
- XNGIFLGASWRNHJ-UHFFFAOYSA-N phthalic acid Chemical compound OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 10
- 239000003795 chemical substances by application Substances 0.000 claims description 9
- 239000007864 aqueous solution Substances 0.000 claims description 8
- 229920003088 hydroxypropyl methyl cellulose Polymers 0.000 claims description 6
- 235000010979 hydroxypropyl methyl cellulose Nutrition 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 5
- 239000001866 hydroxypropyl methyl cellulose Substances 0.000 claims description 4
- UFVKGYZPFZQRLF-UHFFFAOYSA-N hydroxypropyl methyl cellulose Chemical compound OC1C(O)C(OC)OC(CO)C1OC1C(O)C(O)C(OC2C(C(O)C(OC3C(C(O)C(O)C(CO)O3)O)C(CO)O2)O)C(CO)O1 UFVKGYZPFZQRLF-UHFFFAOYSA-N 0.000 claims description 4
- 229920000609 methyl cellulose Polymers 0.000 claims description 4
- 239000001923 methylcellulose Substances 0.000 claims description 4
- 235000010981 methylcellulose Nutrition 0.000 claims description 4
- 239000002736 nonionic surfactant Substances 0.000 claims description 4
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 4
- 229920000896 Ethulose Polymers 0.000 claims description 3
- 239000001859 Ethyl hydroxyethyl cellulose Substances 0.000 claims description 3
- 239000004354 Hydroxyethyl cellulose Substances 0.000 claims description 3
- 229920001479 Hydroxyethyl methyl cellulose Polymers 0.000 claims description 3
- 229920013820 alkyl cellulose Polymers 0.000 claims description 3
- 239000003945 anionic surfactant Substances 0.000 claims description 3
- 239000003093 cationic surfactant Substances 0.000 claims description 3
- 235000019326 ethyl hydroxyethyl cellulose Nutrition 0.000 claims description 3
- 229920013821 hydroxy alkyl cellulose Polymers 0.000 claims description 3
- 235000019447 hydroxyethyl cellulose Nutrition 0.000 claims description 3
- 239000002888 zwitterionic surfactant Substances 0.000 claims description 2
- 229920000663 Hydroxyethyl cellulose Polymers 0.000 claims 1
- 239000000969 carrier Substances 0.000 abstract description 4
- 230000000052 comparative effect Effects 0.000 description 19
- 238000004519 manufacturing process Methods 0.000 description 11
- 229910010293 ceramic material Inorganic materials 0.000 description 10
- 238000011156 evaluation Methods 0.000 description 9
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- 230000015572 biosynthetic process Effects 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 description 5
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 description 4
- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 3
- -1 polyoxyethylene lauryl ether Polymers 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 3
- RFRMMZAKBNXNHE-UHFFFAOYSA-N 6-[4,6-dihydroxy-5-(2-hydroxyethoxy)-2-(hydroxymethyl)oxan-3-yl]oxy-2-(hydroxymethyl)-5-(2-hydroxypropoxy)oxane-3,4-diol Chemical compound CC(O)COC1C(O)C(O)C(CO)OC1OC1C(O)C(OCCO)C(O)OC1CO RFRMMZAKBNXNHE-UHFFFAOYSA-N 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 229910010413 TiO 2 Inorganic materials 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 210000004027 cell Anatomy 0.000 description 2
- HBGGXOJOCNVPFY-UHFFFAOYSA-N diisononyl phthalate Chemical compound CC(C)CCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCC(C)C HBGGXOJOCNVPFY-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910021485 fumed silica Inorganic materials 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- XOAAWQZATWQOTB-UHFFFAOYSA-N taurine Chemical compound NCCS(O)(=O)=O XOAAWQZATWQOTB-UHFFFAOYSA-N 0.000 description 2
- PSBDWGZCVUAZQS-UHFFFAOYSA-N (dimethylsulfonio)acetate Chemical compound C[S+](C)CC([O-])=O PSBDWGZCVUAZQS-UHFFFAOYSA-N 0.000 description 1
- IIZPXYDJLKNOIY-JXPKJXOSSA-N 1-palmitoyl-2-arachidonoyl-sn-glycero-3-phosphocholine Chemical compound CCCCCCCCCCCCCCCC(=O)OC[C@H](COP([O-])(=O)OCC[N+](C)(C)C)OC(=O)CCC\C=C/C\C=C/C\C=C/C\C=C/CCCCC IIZPXYDJLKNOIY-JXPKJXOSSA-N 0.000 description 1
- KKMIHKCGXQMFEU-UHFFFAOYSA-N 2-[dimethyl(tetradecyl)azaniumyl]acetate Chemical compound CCCCCCCCCCCCCC[N+](C)(C)CC([O-])=O KKMIHKCGXQMFEU-UHFFFAOYSA-N 0.000 description 1
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonium chloride Substances [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 1
- BDAGIHXWWSANSR-UHFFFAOYSA-N Formic acid Chemical compound OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 1
- 239000004471 Glycine Substances 0.000 description 1
- QNAYBMKLOCPYGJ-REOHCLBHSA-N L-alanine Chemical compound C[C@H](N)C(O)=O QNAYBMKLOCPYGJ-REOHCLBHSA-N 0.000 description 1
- 229920001732 Lignosulfonate Polymers 0.000 description 1
- 229920000877 Melamine resin Polymers 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 description 1
- 229920002125 Sokalan® Polymers 0.000 description 1
- 235000004279 alanine Nutrition 0.000 description 1
- 150000008051 alkyl sulfates Chemical class 0.000 description 1
- 125000005211 alkyl trimethyl ammonium group Chemical group 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 239000002280 amphoteric surfactant Substances 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- KGOGNDXXUVELIQ-UHFFFAOYSA-N dioctadecylazanium;chloride Chemical compound Cl.CCCCCCCCCCCCCCCCCCNCCCCCCCCCCCCCCCCCC KGOGNDXXUVELIQ-UHFFFAOYSA-N 0.000 description 1
- SMQZZQFYHUDLSJ-UHFFFAOYSA-L disodium;1-dodecylnaphthalene;sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O.C1=CC=C2C(CCCCCCCCCCCC)=CC=CC2=C1 SMQZZQFYHUDLSJ-UHFFFAOYSA-L 0.000 description 1
- GVGUFUZHNYFZLC-UHFFFAOYSA-N dodecyl benzenesulfonate;sodium Chemical compound [Na].CCCCCCCCCCCCOS(=O)(=O)C1=CC=CC=C1 GVGUFUZHNYFZLC-UHFFFAOYSA-N 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000012847 fine chemical Substances 0.000 description 1
- 235000010445 lecithin Nutrition 0.000 description 1
- 239000000787 lecithin Substances 0.000 description 1
- 229940067606 lecithin Drugs 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- PSZYNBSKGUBXEH-UHFFFAOYSA-M naphthalene-1-sulfonate Chemical compound C1=CC=C2C(S(=O)(=O)[O-])=CC=CC2=C1 PSZYNBSKGUBXEH-UHFFFAOYSA-M 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 125000005498 phthalate group Chemical class 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 229920000259 polyoxyethylene lauryl ether Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 229940080264 sodium dodecylbenzenesulfonate Drugs 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 229940117986 sulfobetaine Drugs 0.000 description 1
- 229960003080 taurine Drugs 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- WTHDKMILWLGDKL-UHFFFAOYSA-N urea;hydrate Chemical compound O.NC(N)=O WTHDKMILWLGDKL-UHFFFAOYSA-N 0.000 description 1
- 229920003169 water-soluble polymer Polymers 0.000 description 1
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/50—Catalysts, in general, characterised by their form or physical properties characterised by their shape or configuration
- B01J35/56—Foraminous structures having flow-through passages or channels, e.g. grids or three-dimensional monoliths
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- B01J32/00—
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/04—Oxygen-containing compounds
- C08K5/09—Carboxylic acids; Metal salts thereof; Anhydrides thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K5/00—Use of organic ingredients
- C08K5/36—Sulfur-, selenium-, or tellurium-containing compounds
- C08K5/41—Compounds containing sulfur bound to oxygen
- C08K5/42—Sulfonic acids; Derivatives thereof
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L1/00—Compositions of cellulose, modified cellulose or cellulose derivatives
- C08L1/08—Cellulose derivatives
- C08L1/26—Cellulose ethers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
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Abstract
SCR 촉매의 세라믹 담체용 유기 바인더 조성물 및 이를 포함하는 SCR 촉매용 세라믹 담체가 개시된다. 개시된 SCR 촉매의 세라믹 담체용 유기 바인더 조성물은 셀룰로오스 에테르 및 적어도 1종의 첨가제를 포함한다.Organic binder compositions for SCR catalysts for ceramic carriers and ceramic carriers for SCR catalysts comprising the same are disclosed. The disclosed organic binder composition for a ceramic carrier of an SCR catalyst comprises a cellulose ether and at least one additive.
Description
SCR 촉매의 세라믹 담체용 유기 바인더 조성물 및 이를 포함하는 SCR 촉매용 세라믹 담체가 개시된다. 보다 상세하게는, 셀룰로오스 에테르 및 적어도 1종의 첨가제를 포함하는 SCR 촉매의 세라믹 담체용 유기 바인더 조성물, 및 이를 포함하는 SCR 촉매용 세라믹 담체가 개시된다. Organic binder compositions for SCR catalysts for ceramic carriers and ceramic carriers for SCR catalysts comprising the same are disclosed. More particularly, an organic binder composition for a ceramic carrier of SCR catalyst comprising cellulose ether and at least one additive, and a ceramic carrier for SCR catalyst comprising the same.
최근, 전세계 주요국가들의 환경규제가 강화됨에 따라 배기가스 저감용 촉매 필터의 수요가 증가하고 있다. 이러한 촉매 필터로는 DPF(diesel particulate filter), DOC 필터(diesel oxidation catalyst filter), SCR 촉매 필터(selective catalytic reduction catalyst filter) 등이 있다.Recently, as the environmental regulations of major countries around the world are strengthened, the demand for catalyst filters for reducing exhaust gas is increasing. Such catalyst filters include diesel particulate filter (DPF), diesel oxidation catalyst filter (DOC), and selective catalytic reduction catalyst filter (SCR).
특히, SCR 촉매 필터는 플랜트, 발전소, 선박 등에 사용되는 대표적인 배기가스 저감용 필터이다. SCR 촉매 필터는 배기가스 중의 NOx를 암모니아 또는 요소수 등과 반응시켜 저감시키는 필터로서 그 사용량이 점차 증가하고 있다. 이러한 SCR 촉매 필터는 비표면적이 클수록 촉매 활성이 커지기 때문에, 통상, 세라믹 압출 공법에 의해 제조된 허니컴 구조의 세라믹 담체를 포함한다. In particular, the SCR catalyst filter is a typical exhaust gas reduction filter used in plants, power plants, ships, and the like. The SCR catalytic filter is a filter for reducing NOx in the exhaust gas by reacting with ammonia or urea water and the like, and the amount thereof is gradually increasing. Such an SCR catalyst filter generally includes a ceramic carrier of a honeycomb structure manufactured by a ceramic extrusion method because the catalytic activity becomes larger as the specific surface area is larger.
SCR 촉매용 세라믹 담체는 세라믹 재료에 유기 바인더 및/또는 무기 바인더를 첨가하여 혼합한 후, 상기 혼합물을 압출하여 제조된다. 유기 바인더로는 셀룰로오스 에테르가 사용되고, 무기 바인더로는 건식 실리카(fumed silica), 실리카졸(silica sol) 또는 이들의 조합 등이 사용된다. The ceramic carrier for SCR catalyst is prepared by adding an organic binder and / or an inorganic binder to a ceramic material, mixing the mixture, and extruding the mixture. Cellulose ether is used as the organic binder, and fumed silica, silica sol, or a combination thereof is used as the inorganic binder.
유기 바인더로 사용되는 셀룰로오스 에테르는 세라믹 압출시 성형체(e.g. 담체)에 유동성, 가소성 및/또는 결합력 등을 부여한다. 이러한 셀룰로오스 에테르는 수용성 고분자이며, 이의 주요 특성은 상온수에 용해되어 점성을 발현하는 것이다.The cellulose ether used as the organic binder imparts fluidity, plasticity and / or bonding force to the molded body (e.g., carrier) during the ceramic extrusion. Such cellulose ether is a water-soluble polymer, and its main characteristic is that it is dissolved in ordinary temperature water to develop viscosity.
세라믹 압출에 의한 SCR 촉매용 세라믹 담체의 제조에 있어서 세라믹 조성물의 점도가 주요 인자 중의 하나인데, 상기 세라믹 조성물의 점도가 높을 경우에는 세라믹 압출 성형체의 결합력 및 보형성은 향상되나 유동성 및 가소성은 저하되게 되며, 상기 세라믹 조성물의 점도가 낮을 경우에는 그 반대의 결과가 나타나게 된다. 이 경우, 세라믹 조성물의 점도는 주로 셀룰로오스 에테르의 점도에 의해 결정된다. The viscosity of the ceramic composition is one of the main factors in the production of the ceramic carrier for SCR catalyst by the ceramic extrusion. When the viscosity of the ceramic composition is high, the bonding force and the cohesion of the ceramic extrusion-molded article are improved, but the fluidity and plasticity are lowered If the viscosity of the ceramic composition is low, the opposite result is obtained. In this case, the viscosity of the ceramic composition is mainly determined by the viscosity of the cellulose ether.
따라서, SCR 촉매용 세라믹 담체의 제조에 있어서 세라믹 조성물의 점도 변화에 따른 특정 물성 저하를 보완할 수 있는 유기 바인더 조성물의 개발이 필요한 실정이다.Therefore, it is necessary to develop an organic binder composition that can compensate for a specific property deterioration due to viscosity change of the ceramic composition in the production of a ceramic carrier for SCR catalyst.
본 발명의 일 구현예는 셀룰로오스 에테르 및 적어도 1종의 첨가제를 포함하는 SCR 촉매의 세라믹 담체용 유기 바인더 조성물을 제공한다.One embodiment of the present invention provides an organic binder composition for a ceramic carrier of a SCR catalyst comprising a cellulose ether and at least one additive.
본 발명의 다른 구현예는 상기 유기 바인더 조성물을 포함하는 SCR 촉매용 세라믹 담체를 제공한다.Another embodiment of the present invention provides a ceramic carrier for SCR catalyst comprising the organic binder composition.
본 발명의 일 측면은,According to an aspect of the present invention,
셀룰로오스 에테르; 및Cellulose ethers; And
적어도 1종의 첨가제를 포함하는 SCR 촉매의 세라믹 담체용 유기 바인더 조성물을 제공한다. There is provided an organic binder composition for a ceramic carrier of an SCR catalyst comprising at least one additive.
상기 셀룰로오스 에테르는 알킬셀룰로오스, 알킬히드록시알킬셀룰로오스 및 히드록시알킬셀룰로오스로 이루어진 군으로부터 선택된 적어도 하나를 포함할 수 있다.The cellulose ether may include at least one selected from the group consisting of alkylcelluloses, alkylhydroxyalkylcelluloses, and hydroxyalkylcelluloses.
상기 셀룰로오스 에테르는 메틸셀룰로오스, 히드록시에틸메틸셀룰로오스, 히드록시프로필메틸셀룰로오스, 히드록시에틸셀룰로오스 및 에틸히드록시에틸 셀룰로오스로 이루어진 군으로부터 선택된 적어도 1종을 포함할 수 있다.The cellulose ether may include at least one member selected from the group consisting of methyl cellulose, hydroxyethyl methyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl cellulose and ethyl hydroxyethyl cellulose.
2중량%의 농도를 갖는 상기 셀룰로오스 에테르 수용액은, 브룩필드 점도계로 20℃ 및 20rpm에서 측정된 점도가 3,000~50,000cps일 수 있다.The cellulose ether aqueous solution having a concentration of 2% by weight may have a viscosity of 3,000 to 50,000 cps measured at 20 캜 and 20 rpm in a Brookfield viscometer.
2중량%의 농도를 갖는 상기 셀룰로오스 에테르 수용액은, 브룩필드 점도계로 20℃ 및 20rpm에서 측정된 점도가 10,000~30,000cps일 수 있다.The aqueous cellulose ether solution having a concentration of 2% by weight may have a viscosity of 10,000 to 30,000 cps measured at 20 캜 and 20 rpm by a Brookfield viscometer.
상기 적어도 1종의 첨가제는 가소제, 유동화제, 계면활성제 또는 이들의 조합을 포함할 수 있다.The at least one additive may include a plasticizer, a fluidizing agent, a surfactant, or a combination thereof.
상기 가소제는 프탈산계 가소제를 포함하고, 상기 유동화제는 술포네이트계 유동화제를 포함하며, 상기 계면활성제는 비이온성 계면활성제, 음이온성 계면활성제, 양이온성 계면활성제, 양쪽 이온성 계면활성제 또는 이들의 조합을 포함할 수 있다.Wherein the plasticizer comprises a phthalic acid plasticizer and the fluidizing agent comprises a sulfonate fluidizing agent and the surfactant is selected from the group consisting of a nonionic surfactant, an anionic surfactant, a cationic surfactant, a zwitterionic surfactant, Combinations thereof.
상기 프탈산계 가소제는 0.1 이하의 산가(KOH mg/g)를 가질 수 있다.The phthalic acid plasticizer may have an acid value (KOH mg / g) of 0.1 or less.
상기 SCR 촉매의 세라믹 담체용 유기 바인더 조성물은 상기 셀룰로오스 에테르 100중량부에 대하여 상기 가소제 2~10중량부, 상기 유동화제 1~7중량부 및 상기 계면활성제 0~3중량부를 포함할 수 있다.The organic binder composition for a ceramic carrier of the SCR catalyst may include 2 to 10 parts by weight of the plasticizer, 1 to 7 parts by weight of the plasticizer, and 0 to 3 parts by weight of the surfactant, based on 100 parts by weight of the cellulose ether.
본 발명의 다른 측면은,According to another aspect of the present invention,
상기 유기 바인더 조성물을 포함하는 SCR 촉매용 세라믹 담체를 제공한다.And a ceramic carrier for SCR catalyst comprising the organic binder composition.
상기 SCR 촉매용 세라믹 담체는 무기 바인더를 추가로 포함할 수 있다.The ceramic carrier for SCR catalyst may further include an inorganic binder.
상기 SCR 촉매용 세라믹 담체는 허니컴 구조를 가질 수 있다.The ceramic carrier for SCR catalyst may have a honeycomb structure.
본 발명의 일 구현예에 의하면, 셀룰로오스 에테르 및 적어도 1종의 첨가제를 포함함으로써, SCR 촉매용 세라믹 담체의 보형성, 결합력, 가소성 및 유동성 중 적어도 하나의 물성을 향상시킬 수 있는 SCR 촉매의 세라믹 담체용 유기 바인더 조성물이 제공될 수 있다.According to one embodiment of the present invention, there is provided a ceramic carrier for an SCR catalyst, which can improve at least one of physical properties such as formability, bonding force, plasticity and fluidity of a ceramic carrier for SCR catalyst, by including cellulose ether and at least one additive. May be provided.
본 발명의 다른 구현예에 의하면, 상기 유기 바인더 조성물을 포함하는 SCR 촉매용 세라믹 담체가 제공될 수 있다.According to another embodiment of the present invention, a ceramic carrier for an SCR catalyst containing the organic binder composition may be provided.
이하에서는 본 발명의 일 구현예에 따른 SCR 촉매의 세라믹 담체용 유기 바인더 조성물 및 이를 포함하는 SCR 촉매용 세라믹 담체를 상세히 설명한다.Hereinafter, an organic binder composition for a ceramic carrier of an SCR catalyst and a ceramic carrier for a SCR catalyst containing the same according to an embodiment of the present invention will be described in detail.
본 발명의 일 구현예에 따른 SCR 촉매의 세라믹 담체용 유기 바인더 조성물은 셀룰로오스 에테르 및 적어도 1종의 첨가제를 포함한다.The organic binder composition for a ceramic carrier of the SCR catalyst according to an embodiment of the present invention includes a cellulose ether and at least one additive.
상기 셀룰로오스 에테르는 알킬셀룰로오스, 알킬히드록시알킬셀룰로오스 및 히드록시알킬셀룰로오스로 이루어진 군으로부터 선택된 적어도 하나를 포함할 수 있다. 이러한 셀룰로오스 에테르는, 예를 들어, 메틸셀룰로오스, 히드록시에틸메틸셀룰로오스, 히드록시프로필메틸셀룰로오스, 히드록시에틸셀룰로오스 및 에틸히드록시에틸 셀룰로오스로 이루어진 군으로부터 선택된 적어도 1종을 포함할 수 있다.The cellulose ether may include at least one selected from the group consisting of alkylcelluloses, alkylhydroxyalkylcelluloses, and hydroxyalkylcelluloses. Such a cellulose ether may include at least one member selected from the group consisting of methyl cellulose, hydroxyethyl methyl cellulose, hydroxypropyl methyl cellulose, hydroxyethyl cellulose, and ethylhydroxyethyl cellulose, for example.
2중량%의 농도를 갖는 상기 셀룰로오스 에테르 수용액은, 브룩필드 점도계로 20℃ 및 20rpm에서 측정된 점도가 3,000~50,000cps일 수 있다. 상기 셀룰로오스 에테르 수용액의 점도가 상기 범위이내이면, 증점효과가 발현되면서도 작업성이 양호하다.The cellulose ether aqueous solution having a concentration of 2% by weight may have a viscosity of 3,000 to 50,000 cps measured at 20 캜 and 20 rpm in a Brookfield viscometer. When the viscosity of the cellulose ether aqueous solution is within the above range, the thickening effect is exhibited and the workability is good.
더욱이, 2중량%의 농도를 갖는 상기 셀룰로오스 에테르 수용액은, 브룩필드 점도계로 20℃ 및 20rpm에서 측정된 점도가 10,000~30,000cps일 수 있다. 상기 셀룰로오스 에테르 수용액의 점도가 상기 범위이내이면, 보형성, 결합력, 가소성 및 유동성이 모두 적정 수준인 SCR 촉매용 세라믹 담체를 얻을 수 있다.Moreover, the aqueous solution of cellulose ether having a concentration of 2% by weight may have a viscosity of 10,000 to 30,000 cps measured at 20 캜 and 20 rpm in a Brookfield viscometer. When the viscosity of the cellulose ether aqueous solution is within the above range, it is possible to obtain a ceramic carrier for an SCR catalyst in which the formability, the binding force, the plasticity and the fluidity are both at an appropriate level.
상기 적어도 1종의 첨가제는 가소제, 유동화제, 계면활성제 또는 이들의 조합을 포함할 수 있다.The at least one additive may include a plasticizer, a fluidizing agent, a surfactant, or a combination thereof.
상기 가소제는 SCR 촉매용 세라믹 담체에 가소성을 부여하는 역할을 수행한다. 본 명세서에서, ´가소성´이란 외력에 의해 형태가 변한 물체가 외력이 없어져도 원래의 형태로 돌아오지 않는 성질을 의미한다. 따라서, 상기 유기 바인더 조성물의 가소성이 높을수록 상기 조성물을 포함하는 압출성형체는 처음 생성된 후 변형되지 않고 그 원형이 잘 보존된다. 이러한 가소제는 프탈레이트, 디(2-에틸헥실)프탈레이트(DEHP), 디옥틸프탈레이트(DOP) 및 디이소노닐프탈레이트(DINP)와 같은 프탈산계 가소제를 포함할 수 있다. The plasticizer serves to impart plasticity to the ceramic carrier for SCR catalyst. In the present specification, 'plasticity' means a property that an object whose shape is changed by an external force does not return to its original shape even if an external force is lost. Therefore, the higher the plasticity of the organic binder composition, the more the originality of the extruded article containing the composition is preserved without being deformed after the initial production. Such plasticizers may include phthalic acid plasticizers such as phthalates, di (2-ethylhexyl) phthalate (DEHP), dioctyl phthalate (DOP) and diisononyl phthalate (DINP).
상기 유동화제는 SCR 촉매용 담체의 제조시 세라믹 조성물의 압출속도를 증가시키는 역할을 수행한다. 이러한 유동화제는 나프탈렌 술포네이트, 리그닌 술포네이트 및 멜라민 술포네이트와 같은 술포네이트계 유동화제를 포함할 수 있다. 본 명세서에서, ´세라믹 조성물´이란 Al2O3와 같은 세라믹 재료, 상기 유기 바인더 조성물 및 선택적으로 무기 바인더를 물에 혼합하여 형성한 수성 조성물을 의미한다. The fluidizing agent serves to increase the extrusion rate of the ceramic composition in the production of the carrier for the SCR catalyst. Such fluidizing agents may include sulfonate-based fluidizing agents such as naphthalenesulfonate, ligninsulfonate and melamine sulfonate. As used herein, the term "ceramic composition" means a ceramic material such as Al 2 O 3 , an aqueous composition formed by mixing the organic binder composition and optionally an inorganic binder in water.
상기 계면활성제는 SCR 촉매용 담체의 보형성을 증가시키고, 아울러 상기 담체의 제조시 세라믹 조성물의 압출속도를 증가시키는 역할을 수행한다. 이러한 계면활성제는 폴리비닐알코올, 폴리아크릴산, 폴리옥시에틸렌 라우릴 에테르 또는 메틸셀룰로오스와 같은 비이온성 계면활성제; 알킬 벤젠 디메틸 암모늄 클로라이드, 알킬 트리메틸 암모늄 클로라이드 또는 디스테아릴 암모늄 클로라이드와 같은 양이온성 계면활성제; 소듐 도데실설페이트, 소듐 도데실벤젠 술포네이트, 소듐 도데실 나프탈렌설페이트 또는 디알킬 벤젠알킬 황산염과 같은 음이온성 계면활성제; 아미노산형 계면활성제, 미리스틸베타인(miristyl betaine)형 계면활성제, 글리신형 계면활성제, 알라닌형 계면활성제, 설포베타인(sulfobetaine)형 계면활성제, 레시틴 또는 타우린과 같은 양쪽 이온성 계면활성제; 또는 이들의 조합을 포함할 수 있다.The surfactant enhances the formation of the carrier for the SCR catalyst and increases the extrusion rate of the ceramic composition during the production of the carrier. Such surfactants include nonionic surfactants such as polyvinyl alcohol, polyacrylic acid, polyoxyethylene lauryl ether or methylcellulose; Cationic surfactants such as alkylbenzene dimethyl ammonium chloride, alkyl trimethyl ammonium chloride or distearyl ammonium chloride; Anionic surfactants such as sodium dodecyl sulfate, sodium dodecylbenzene sulfonate, sodium dodecylnaphthalene sulfate or dialkylbenzene alkyl sulfate; An aminic acid type surfactant, a myristyl betaine type surfactant, a glycine type surfactant, an alanine type surfactant, a sulfobetaine type surfactant, an amphoteric surfactant such as lecithin or taurine; Or a combination thereof.
상기 프탈산계 가소제는 0.1 이하, 예를 들어, 0.01~0.05의 산가(KOH mg/g)를 가질 수 있다. 상기 프탈산계 가소제의 산가가 상기 범위이내이면, 상기 SCR 촉매용 세라믹 담체에 충분한 가소성을 부여할 수 있다.The phthalic acid plasticizer may have an acid value (KOH mg / g) of 0.1 or less, for example, 0.01 to 0.05. When the acid value of the phthalic acid plasticizer is within the above range, sufficient plasticity can be imparted to the ceramic carrier for SCR catalyst.
상기 SCR 촉매의 세라믹 담체용 유기 바인더 조성물은 상기 셀룰로오스 에테르 100중량부에 대하여 상기 가소제 2~10중량부, 상기 유동화제 1~7중량부 및 상기 계면활성제 0~3중량부를 포함할 수 있다. 상기 유기 바인더 조성물의 성분비가 상기 범위이내이면, 보형성, 결합력, 가소성 및 유동성이 모두 우수한 세라믹 담체를 얻을 수 있다(실시예 1 참조). The organic binder composition for a ceramic carrier of the SCR catalyst may include 2 to 10 parts by weight of the plasticizer, 1 to 7 parts by weight of the plasticizer, and 0 to 3 parts by weight of the surfactant, based on 100 parts by weight of the cellulose ether. When the composition ratio of the organic binder composition is within the above range, a ceramic carrier having excellent formability, bonding strength, plasticity and fluidity can be obtained (see Example 1).
본 발명의 다른 구현예는 세라믹 재료 및 상기 유기 바인더 조성물을 포함하는 SCR 촉매용 세라믹 담체를 제공한다.Another embodiment of the present invention provides a ceramic carrier for a SCR catalyst comprising a ceramic material and the organic binder composition.
상기 세라믹 재료는 Al2O3, SiO2, V2O5, TiO2 또는 이들의 조합을 포함할 수 있다. The ceramic material may include Al 2 O 3 , SiO 2 , V 2 O 5 , TiO 2, or combinations thereof.
상기 유기 바인더 조성물의 함량은 상기 세라믹 재료 100중량부에 대하여 1~15중량부, 예를 들어, 3~7중량부일 수 있다. 상기 유기 바인더 조성물의 함량이 상기 범위이내이면, 제조과정 중인 세라믹 담체 또는 제조된 세라믹 담체에 균열이 생기지 않는다. The content of the organic binder composition may be 1 to 15 parts by weight, for example, 3 to 7 parts by weight based on 100 parts by weight of the ceramic material. If the content of the organic binder composition is within the above range, cracks do not occur in the ceramic carrier or the produced ceramic carrier in the manufacturing process.
또한, 상기 SCR 촉매용 세라믹 담체는 무기 바인더를 추가로 포함할 수 있다. 상기 무기 바인더는 실리카졸, 건식 실리카(fumed silica) 또는 이들의 조합을 포함할 수 있다. 또한, 상기 무기 바인더의 첨가량은 상기 세라믹 재료 100중량부에 대하여 0~7.0, 예를 들어, 0.5~3.0중량부일 수 있다. 상기 무기 바인더의 첨가량이 상기 범위이내이면, SCR 촉매의 활성을 저하시키지 않으면서 바인더 역할을 수행할 수 있다.The ceramic carrier for SCR catalyst may further include an inorganic binder. The inorganic binder may include silica sol, fumed silica, or a combination thereof. The amount of the inorganic binder to be added may be 0 to 7.0, for example, 0.5 to 3.0 parts by weight based on 100 parts by weight of the ceramic material. If the addition amount of the inorganic binder is within the above range, the binder can be performed without lowering the activity of the SCR catalyst.
상기 세라믹 담체는 허니컴 구조를 가질 수 있다.The ceramic carrier may have a honeycomb structure.
이하, 상기 SCR 촉매용 세라믹 담체의 제조방법을 상세히 설명한다.Hereinafter, a method for producing the ceramic carrier for SCR catalyst will be described in detail.
먼저, 세라믹 재료, 전술한 유기 바인더 조성물 및 선택적으로 무기 바인더를 혼합하여 건식 혼합물을 얻는다. First, a ceramic material, the above-mentioned organic binder composition and optionally an inorganic binder are mixed to obtain a dry mixture.
이어서, 상기 건식 혼합물에 물을 첨가하고 혼합하여 습식 혼합물을 얻는다. 이때, 물의 첨가량은 상기 건식 혼합물 100중량부에 대하여 20~60중량부, 예를 들어, 30~40중량부일 수 있다. Water is then added to the dry mixture and mixed to obtain a wet mixture. The amount of water to be added may be 20 to 60 parts by weight, for example, 30 to 40 parts by weight based on 100 parts by weight of the dry mixture.
다른 예로서, 상기 습식 혼합물의 제조시 건식 혼합물의 제조과정이 생략될 수 있다. 이 경우, 세라믹 재료, 유기 바인더 조성물, 물 및 선택적으로 무기 바인더를 한꺼번에 혼합하여 습식 혼합물을 제조할 수도 있다. As another example, the preparation of the dry mixture in the preparation of the wet mixture may be omitted. In this case, a wet mixture may be prepared by mixing ceramic material, organic binder composition, water and optionally inorganic binder at once.
이어서, 상기 습식 혼합물을 혼련기로 혼련하여 세라믹 조성물을 얻는다. Then, the wet mixture is kneaded with a kneader to obtain a ceramic composition.
다음에, 상기 세라믹 조성물을 진공 압출기로 소정 형상의 다이를 통해 압출하여 원하는 형상의 성형체(즉, 세라믹 담체)를 얻는다. 예를 들어, 상기 다이가 허니컴 구조를 갖는 경우에는 허니컴 구조의 성형체를 얻을 수 있다.Next, the ceramic composition is extruded through a die having a predetermined shape by a vacuum extruder to obtain a molded body having a desired shape (that is, a ceramic carrier). For example, when the die has a honeycomb structure, a honeycomb molded body can be obtained.
이하, 실시예들을 들어 본 발명에 관하여 더욱 상세히 설명하지만, 본 발명이 이러한 실시예들에 한정되는 것은 아니다.Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these embodiments.
실시예Example
비교예 1~5 및 실시예 1Comparative Examples 1 to 5 and Example 1
세라믹 재료 97중량부, 실리카졸(영일화성, YGS-40) 0.8중량부 및 유기 바인더 조성물 2.2중량부를 혼합하여 건식 혼합물을 제조하였다. 이후, 상기 건식 혼합물 100중량부에 대하여 물 35중량부를 혼합하여 세라믹 조성물을 제조하였다. 상기 세라믹 재료 및 유기 바인더 조성물의 성분비를 하기 표 1에 나타내었다.97 parts by weight of a ceramic material, 0.8 parts by weight of silica sol (Yongil Chemical Co., Ltd., YGS-40) and 2.2 parts by weight of an organic binder composition were mixed to prepare a dry mixture. Then, 35 parts by weight of water was mixed with 100 parts by weight of the dry mixture to prepare a ceramic composition. The composition ratios of the ceramic material and the organic binder composition are shown in Table 1 below.
재료의 성분비ceramic
Composition ratio of material
*1: 히드록시프로필메틸셀룰로오스(삼성정밀화학, 메셀로스 PMC-40H, 2중량%의 HPMC 수용액의 점도는 15,000cps임).* 1: Hydroxypropyl methylcellulose (viscosity of 2 wt% HPMC aqueous solution of Samsung Fine Chemicals, Methylcellus PMC-40H is 15,000 cps).
*2: 0.02의 산가(KOH mg/g)를 갖는 디옥틸프탈레이트(DOP) (애경유화)* 2: Dioctyl phthalate (DOP) having an acid value (KOH mg / g) of 0.02 (Akeny oil emulsion)
*3: 나프탈렌계 고성능 유동화제(CHEMISTAR, NN 1000-P)* 3: Naphthalene high performance fluidizer (CHEMISTAR, NN 1000-P)
*4: 비이온성 계면활성제(선진화학, SUNFOM-CDE)* 4: Nonionic surfactant (SUNFIN-CDE)
평가예Evaluation example
상기 비교예 1~5 및 실시예 1에서 제조된 각각의 세라믹 조성물을, 스크류 직경이 30mm인 압출기(동광기계, 주문제작)로 허니컴 구조의 다이(단면적의 크기: 15mm×15mm, 셀의 수: 10cells×10cells)를 통하여 압출하여 시편을 제조하였다. 이어서, 상기 각 시편의 물성을 하기와 같은 방법으로 평가하여, 그 결과를 하기 표 2에 나타내었다. Each of the ceramic compositions prepared in Comparative Examples 1 to 5 and Example 1 was extruded using a die having a honeycomb structure (cross-sectional area size: 15 mm x 15 mm, number of cells: 10cells x 10 cells) to prepare specimens. Then, the physical properties of each of the above specimens were evaluated by the following methods, and the results are shown in Table 2 below.
(보형성의 평가)(Evaluation of beam formation)
상기 각 시편의 절단면으로부터 셀벽의 무너짐 정도를 관찰하여 오점법(즉, 1~5)으로 보형성을 평가하였다. 보형성의 평가시 숫자가 클수록 보형성이 좋은 것을 의미한다. The degree of collapse of the cell walls was observed from the cut surface of each of the specimens, and the beam formation was evaluated by the blot method (i.e., 1 to 5). The larger the number in the evaluation of the beam formation, the better the beam formation.
(결합력의 평가)(Evaluation of Bonding Force)
상기 각 시편(15mm×15mm×10mm)의 인장강도를 TA사의 Texture Analyzer로 측정하였다. 7회 평가후 최고값 및 최저값을 제외한 나머지 값들을 평균하여 결합력으로 평가하였다. 결합력의 평가시 숫자가 클수록 결합력이 큰 것을 의미한다. The tensile strength of each of the specimens (15 mm x 15 mm x 10 mm) was measured with a TA Textura Analyzer. After the 7th evaluation, the remaining values except for the maximum value and the minimum value were averaged and evaluated by the binding force. The larger the number is, the greater the binding force.
(가소성의 평가)(Evaluation of plasticity)
상기 각 시편의 제조시, 압출 후 20cm의 길이로 토출된 시편의 휘어짐 정도를 측정하여, 이를 기초로 가소성을 평가하였다. 여기서, ´시편의 휘어짐 정도´란 시편의 끝 부분과 압출기 다이와의 높이 차이를 의미한다. 또한, 가소성의 평가시 숫자가 작을수록 가소성이 좋은 것을 의미한다. In each of the above specimens, the degree of warpage of the specimen discharged at a length of 20 cm after extrusion was measured, and plasticity was evaluated based on the degree of warpage. Here, 'degree of warpage of specimen' means the height difference between the tip of the specimen and the extruder die. In addition, the smaller the number in the evaluation of plasticity, the better the plasticity.
(유동성의 평가)(Evaluation of liquidity)
상기 각 시편의 제조시, 압출 후 1m의 길이로 토출된 시편에 대하여 압출속도를 계산하여, 이를 유동성으로 평가하였다. 유동성의 평가시 숫자가 클수록 유동성이 좋은 것을 의미한다. In the preparation of each of the above specimens, the extrusion speed of the specimen discharged at a length of 1 m after extrusion was calculated and evaluated as fluidity. The larger the number of liquidity evaluations, the better the fluidity.
상기 표 2를 참조하면, 비교예 2~3에서 제조된 세라믹 조성물은 비교예 1에서 제조된 세라믹 조성물에 비해 결합력과 가소성은 우수하지만 보형성과 유동성은 낮은 시편(즉, 세라믹 담체)을 형성하였기 때문에, 보형성 및 유동성에 비해 결합력 및 가소성이 중요한 세라믹 담체의 제조에 적합한 것임을 알 수 있다. 한편, 비교예 4에서 제조된 세라믹 조성물은 비교예 1에서 제조된 세라믹 조성물에 비해 가소성과 유동성은 우수하지만 보형성과 결합력은 각각 낮거나 같은 시편을 형성하였기 때문에, 보형성에 비해 가소성과 유동성이 중요하고 일정 수준의 결합력(즉, 약 26.3N/cm2)을 갖는 세라믹 담체의 제조에 적합한 것임을 알 수 있다. 다른 한편, 비교예 5에서 제조된 세라믹 조성물은 비교예 1에서 제조된 세라믹 조성물에 비해 보형성은 우수하지만 결합력, 가소성 및 유동성은 각각 낮거나 같은 시편을 형성하였기 때문에, 결합력 및 가소성에 비해 보형성이 중요하고 일정 수준의 유동성(즉, 약 47.5cm/min)을 갖는 세라믹 담체의 제조에 적합한 것임을 알 수 있다. 또 다른 한편, 실시예 1에서 제조된 세라믹 조성물은 비교예 1에서 제조된 세라믹 조성물에 비해 보형성, 결합력, 가소성 및 유동성이 모두 우수한 시편을 형성하였기 때문에, 보형성, 결합력, 가소성 및 유동성이 모두 중요한 세라믹 담체의 제조에 적합한 것임을 알 수 있다. Referring to Table 2, the ceramic compositions prepared in Comparative Examples 2 and 3 were found to have formed a specimen (i.e., a ceramic support) having excellent bonding strength and plasticity as compared with the ceramic composition prepared in Comparative Example 1, Therefore, it can be understood that the present invention is suitable for the production of a ceramic carrier in which bonding force and plasticity are important as compared with the beam formation and fluidity. On the other hand, the ceramic composition prepared in Comparative Example 4 had better plasticity and fluidity than the ceramic composition prepared in Comparative Example 1, but formed a specimen having low or equal cohesion and bonding strength, And is suitable for the production of a ceramic carrier having an important and constant level of bonding strength (i.e., about 26.3 N / cm 2 ). On the other hand, since the ceramic composition prepared in Comparative Example 5 formed a specimen having the same bonding force, plasticity and fluidity as those of the ceramic composition prepared in Comparative Example 1, Is suitable for the production of a ceramic carrier having an important and constant level of fluidity (i.e., about 47.5 cm / min). On the other hand, since the ceramic composition prepared in Example 1 formed specimens excellent in the formability, bonding force, plasticity and fluidity as compared with the ceramic composition prepared in Comparative Example 1, the formability, bonding strength, plasticity, Which is suitable for the production of an important ceramic carrier.
본 발명은 실시예를 참고로 설명되었으나 이는 예시적인 것에 불과하며, 본 기술 분야의 통상의 지식을 가진 자라면 이로부터 다양한 변형 및 균등한 다른 구현예가 가능하다는 점을 이해할 것이다. 따라서, 본 발명의 진정한 기술적 보호 범위는 첨부된 특허청구범위의 기술적 사상에 의하여 정해져야 할 것이다.While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments, but, on the contrary, is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims. Accordingly, the true scope of the present invention should be determined by the technical idea of the appended claims.
Claims (10)
적어도 1종의 첨가제를 포함하고,
상기 적어도 1종의 첨가제는, 상기 셀룰로오스 에테르 100중량부에 대하여, 프탈산계 가소제 2~10중량부, 술포네이트계 유동화제 1~7중량부 및 계면활성제 1~3중량부를 포함하는 SCR 촉매의 세라믹 담체용 유기 바인더 조성물. Cellulose ethers; And
At least one additive,
Wherein the at least one additive is a ceramic of an SCR catalyst comprising 2 to 10 parts by weight of a phthalic acid plasticizer, 1 to 7 parts by weight of a sulfonate-based fluidizing agent and 1 to 3 parts by weight of a surfactant based on 100 parts by weight of the cellulose ether Organic binder composition for carrier.
상기 셀룰로오스 에테르는 알킬셀룰로오스, 알킬히드록시알킬셀룰로오스 및 히드록시알킬셀룰로오스로 이루어진 군으로부터 선택된 적어도 하나를 포함하는 SCR 촉매의 세라믹 담체용 유기 바인더 조성물.The method according to claim 1,
Wherein the cellulose ether comprises at least one selected from the group consisting of alkyl celluloses, alkylhydroxyalkylcelluloses, and hydroxyalkylcelluloses.
상기 셀룰로오스 에테르는 메틸셀룰로오스, 히드록시에틸메틸셀룰로오스, 히드록시프로필메틸셀룰로오스, 히드록시에틸셀룰로오스 및 에틸히드록시에틸 셀룰로오스로 이루어진 군으로부터 선택된 적어도 1종을 포함하는 SCR 촉매의 세라믹 담체용 유기 바인더 조성물.3. The method of claim 2,
Wherein the cellulose ether comprises at least one member selected from the group consisting of methyl cellulose, hydroxyethyl methyl cellulose, hydroxypropylmethyl cellulose, hydroxyethyl cellulose and ethylhydroxyethyl cellulose.
2중량%의 농도를 갖는 상기 셀룰로오스 에테르 수용액은, 브룩필드 점도계로 20℃ 및 20rpm에서 측정된 점도가 3,000~50,000cps인 SCR 촉매의 세라믹 담체용 유기 바인더 조성물.The method according to claim 1,
Wherein the aqueous solution of cellulose ether having a concentration of 2% by weight has a viscosity of 3,000 to 50,000 cps as measured by a Brookfield viscometer at 20 캜 and 20 rpm, for an organic binder composition for a ceramic carrier.
2중량%의 농도를 갖는 상기 셀룰로오스 에테르 수용액은, 브룩필드 점도계로 20℃ 및 20rpm에서 측정된 점도가 10,000~30,000cps인 SCR 촉매의 세라믹 담체용 유기 바인더 조성물.5. The method of claim 4,
Wherein the aqueous solution of cellulose ether having a concentration of 2% by weight has a viscosity of 10,000 to 30,000 cps as measured by a Brookfield viscometer at 20 캜 and 20 rpm, for an organic binder composition for a ceramic carrier.
상기 계면활성제는 비이온성 계면활성제, 음이온성 계면활성제, 양이온성 계면활성제, 양쪽 이온성 계면활성제 또는 이들의 조합을 포함하는 SCR 촉매의 세라믹 담체용 유기 바인더 조성물.The method according to claim 1,
Wherein the surfactant comprises a nonionic surfactant, an anionic surfactant, a cationic surfactant, a zwitterionic surfactant, or a combination thereof.
상기 프탈산계 가소제는 0.1이하의 산가(KOH mg/g)를 갖는 SCR 촉매의 세라믹 담체용 유기 바인더 조성물.The method according to claim 1,
Wherein the phthalic acid plasticizer has an acid value (KOH mg / g) of 0.1 or less.
무기 바인더를 추가로 포함하는 SCR 촉매용 세라믹 담체.9. The method of claim 8,
A ceramic carrier for SCR catalyst, further comprising an inorganic binder.
허니컴 구조를 갖는 SCR 촉매용 세라믹 담체.
9. The method of claim 8,
Ceramic carrier for SCR catalyst having a honeycomb structure.
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