CN114713243B - 一种低温高效高抗硫长时间稳定scr脱硝催化剂及其制备方法 - Google Patents
一种低温高效高抗硫长时间稳定scr脱硝催化剂及其制备方法 Download PDFInfo
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- 239000003054 catalyst Substances 0.000 title claims abstract description 52
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 238000002791 soaking Methods 0.000 claims abstract description 25
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 19
- 238000001035 drying Methods 0.000 claims abstract description 16
- 238000011068 loading method Methods 0.000 claims abstract description 15
- 238000005303 weighing Methods 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 9
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 7
- 239000011593 sulfur Substances 0.000 claims abstract description 7
- 150000002696 manganese Chemical class 0.000 claims abstract description 5
- 150000002815 nickel Chemical class 0.000 claims abstract description 5
- 239000002243 precursor Substances 0.000 claims abstract description 5
- 238000006243 chemical reaction Methods 0.000 claims abstract description 3
- 238000007598 dipping method Methods 0.000 claims abstract description 3
- 230000003197 catalytic effect Effects 0.000 claims description 22
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 8
- 239000011572 manganese Substances 0.000 claims description 8
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 7
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 claims description 6
- 229910002554 Fe(NO3)3·9H2O Inorganic materials 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 4
- 229910052878 cordierite Inorganic materials 0.000 claims description 4
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000004408 titanium dioxide Substances 0.000 claims description 4
- 229910002492 Ce(NO3)3·6H2O Inorganic materials 0.000 claims description 3
- 229910000480 nickel oxide Inorganic materials 0.000 claims description 3
- KBJMLQFLOWQJNF-UHFFFAOYSA-N nickel(II) nitrate Inorganic materials [Ni+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O KBJMLQFLOWQJNF-UHFFFAOYSA-N 0.000 claims description 3
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 claims description 3
- 229910052760 oxygen Inorganic materials 0.000 claims description 3
- 238000003756 stirring Methods 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 229910052799 carbon Inorganic materials 0.000 claims description 2
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052748 manganese Inorganic materials 0.000 claims 1
- 229910052759 nickel Inorganic materials 0.000 claims 1
- 150000003839 salts Chemical class 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 9
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
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- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 3
- 239000003546 flue gas Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- LJCFOYOSGPHIOO-UHFFFAOYSA-N antimony pentoxide Chemical compound O=[Sb](=O)O[Sb](=O)=O LJCFOYOSGPHIOO-UHFFFAOYSA-N 0.000 description 2
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- UBEWDCMIDFGDOO-UHFFFAOYSA-N cobalt(2+);cobalt(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[Co+2].[Co+3].[Co+3] UBEWDCMIDFGDOO-UHFFFAOYSA-N 0.000 description 2
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 description 2
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- CMIHHWBVHJVIGI-UHFFFAOYSA-N gadolinium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[Gd+3].[Gd+3] CMIHHWBVHJVIGI-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 2
- ZNOKGRXACCSDPY-UHFFFAOYSA-N tungsten trioxide Chemical compound O=[W](=O)=O ZNOKGRXACCSDPY-UHFFFAOYSA-N 0.000 description 2
- 150000000703 Cerium Chemical class 0.000 description 1
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 description 1
- 239000005751 Copper oxide Substances 0.000 description 1
- 150000000921 Gadolinium Chemical class 0.000 description 1
- 150000000922 Holmium Chemical class 0.000 description 1
- 229910021380 Manganese Chloride Inorganic materials 0.000 description 1
- GLFNIEUTAYBVOC-UHFFFAOYSA-L Manganese chloride Chemical compound Cl[Mn]Cl GLFNIEUTAYBVOC-UHFFFAOYSA-L 0.000 description 1
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 150000001213 Praseodymium Chemical class 0.000 description 1
- 150000001216 Samarium Chemical class 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical class [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 229910021626 Tin(II) chloride Inorganic materials 0.000 description 1
- MCMNRKCIXSYSNV-UHFFFAOYSA-N ZrO2 Inorganic materials O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 1
- 238000003916 acid precipitation Methods 0.000 description 1
- 150000001462 antimony Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 229910000420 cerium oxide Inorganic materials 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 150000001868 cobalt Chemical class 0.000 description 1
- 150000001879 copper Chemical class 0.000 description 1
- 229910000431 copper oxide Inorganic materials 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- OWCYYNSBGXMRQN-UHFFFAOYSA-N holmium(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Ho+3].[Ho+3] OWCYYNSBGXMRQN-UHFFFAOYSA-N 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- 239000011565 manganese chloride Substances 0.000 description 1
- MIVBAHRSNUNMPP-UHFFFAOYSA-N manganese(II) nitrate Inorganic materials [Mn+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O MIVBAHRSNUNMPP-UHFFFAOYSA-N 0.000 description 1
- SQQMAOCOWKFBNP-UHFFFAOYSA-L manganese(II) sulfate Chemical compound [Mn+2].[O-]S([O-])(=O)=O SQQMAOCOWKFBNP-UHFFFAOYSA-L 0.000 description 1
- 229910000357 manganese(II) sulfate Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- ALTWGIIQPLQAAM-UHFFFAOYSA-N metavanadate Chemical compound [O-][V](=O)=O ALTWGIIQPLQAAM-UHFFFAOYSA-N 0.000 description 1
- MEFBJEMVZONFCJ-UHFFFAOYSA-N molybdate Chemical compound [O-][Mo]([O-])(=O)=O MEFBJEMVZONFCJ-UHFFFAOYSA-N 0.000 description 1
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 description 1
- LGQLOGILCSXPEA-UHFFFAOYSA-L nickel sulfate Chemical compound [Ni+2].[O-]S([O-])(=O)=O LGQLOGILCSXPEA-UHFFFAOYSA-L 0.000 description 1
- 229910000363 nickel(II) sulfate Inorganic materials 0.000 description 1
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 description 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 description 1
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000003303 reheating Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- FKTOIHSPIPYAPE-UHFFFAOYSA-N samarium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[Sm+3].[Sm+3] FKTOIHSPIPYAPE-UHFFFAOYSA-N 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
- PBYZMCDFOULPGH-UHFFFAOYSA-N tungstate Chemical compound [O-][W]([O-])(=O)=O PBYZMCDFOULPGH-UHFFFAOYSA-N 0.000 description 1
- LSGOVYNHVSXFFJ-UHFFFAOYSA-N vanadate(3-) Chemical compound [O-][V]([O-])([O-])=O LSGOVYNHVSXFFJ-UHFFFAOYSA-N 0.000 description 1
- 229910009111 xH2 O Inorganic materials 0.000 description 1
- 150000003754 zirconium Chemical class 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
- B01J23/00—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00
- B01J23/70—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper
- B01J23/76—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36
- B01J23/84—Catalysts comprising metals or metal oxides or hydroxides, not provided for in group B01J21/00 of the iron group metals or copper combined with metals, oxides or hydroxides provided for in groups B01J23/02 - B01J23/36 with arsenic, antimony, bismuth, vanadium, niobium, tantalum, polonium, chromium, molybdenum, tungsten, manganese, technetium or rhenium
- B01J23/889—Manganese, technetium or rhenium
- B01J23/8892—Manganese
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- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
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Abstract
本发明涉及一种低温高效高抗硫长时间稳定SCR脱硝催化剂及其制备方法。将镍盐、锰盐或亚锰盐和催化助剂前驱体溶于水中,得浸渍液;将载体于浸渍液中浸渍10‑30min,取出干燥,高温焙烧后,称重;重复浸渍、干燥和高温焙烧过程,直至活性组分和催化助剂的总负载量为,按质量百分比为载体质量的0.001‑100%时,得目标催化剂。本发明提供的催化剂在低温150℃即可达到100%的脱硝转化率,而且具有较高的抗硫性能,同时长时间稳定,生产过程环保无污染,工业化应用前景良好。
Description
技术领域
本发明涉及一种低温高效高抗硫长时间稳定SCR脱硝催化剂及其制备方法,属于环保催化材料和大气污染治理技术领域。
背景技术
氮氧化物作为主要的大气污染物之一,大量排放到空气中,会引发酸雨、光化学烟雾和臭氧层破坏等环境问题,严重危害人体健康。
目前烟气脱硝技术主要是选择性催化还原法,利用还原剂在催化剂作用下将氮氧化物还原成氮气和水,到达脱硝的目的。但是现有催化剂一般要在较高温度(300℃以上)下才能发挥出高的催化活性,而在温度低于180℃时,催化活性较低。另一方面,催化剂很容易受到灰尘和二氧化硫的影响而失去活性,因此烟气要经过除尘脱硫后再进行脱硝,此时烟气温度通常较低,需要再次加热后才能进行脱硝。因此,市场迫切需要低温高效的脱硝催化剂的出现,以便解决目前产生的诸多问题。
尽管已有对低温脱硝催化剂的大量研究,但很难有做到工业化应用的催化剂。
发明内容
为了解决以上技术问题,本发明采用简单的制备工艺,通过调配合适的活性组分最终获得了在低温下具有高催化活性、高抗硫性能同时长时间稳定的催化剂,工业应用前景良好。
本发明采用的技术方案是:一种低温高效高抗硫长时间稳定SCR脱硝催化剂,所述低温高效高抗硫长时间稳定SCR脱硝催化剂是,载体上负载有活性组分和催化助剂,所述载体选自堇青石蜂窝陶瓷、二氧化钛、活性炭和氧化铝中的一种或两种以上的组合;所述活性组分是氧化镍和/或二氧化锰。
进一步地,上述的一种低温高效高抗硫长时间稳定SCR脱硝催化剂,所述催化助剂选自二氧化铈、五氧化二钒、三氧化钨、氧化铜、氧化亚铁、三氧化二铁、四氧化三铁、四氧化三钴、二氧化锆、三氧化钼、二氧化锡、三氧化二锑、五氧化二锑、三氧化二钐、三氧化二钆、十一氧化六镨和三氧化二钬中的一种或两种以上的组合。
进一步地,上述的一种低温高效高抗硫长时间稳定SCR脱硝催化剂,所述活性组分,按摩尔比,氧化镍:二氧化锰=(0-2):1。
进一步地,上述的一种低温高效高抗硫长时间稳定SCR脱硝催化剂,按摩尔比,活性组分:催化助剂=(1-2):1。
进一步地,上述的一种低温高效高抗硫长时间稳定SCR脱硝催化剂,活性组分和催化助剂的总负载量为,按质量百分为载体质量的0.001-100%。
一种低温高效高抗硫长时间稳定SCR脱硝催化剂的制备方法,包括如下步骤:
1)将镍盐、锰盐或亚锰盐和催化助剂前驱体溶于水中,得浸渍液;
2)将载体于浸渍液中浸渍10-30min,取出干燥,高温焙烧后,称重;
3)重复步骤2)浸渍、干燥和高温焙烧过程,直至活性组分和催化助剂的总负载量为,按质量百分为载体质量的0.001-100%时,得目标催化剂。
进一步地,上述的制备方法,所述镍盐选自(CH3COO)2Ni·4H2O、Ni(NO3)2·6H2O、NiCl2·6H2O、NiSO4·7H2O或NiBr2·xH2O。
进一步地,上述的制备方法,所述锰盐或亚锰盐选自(CH3COO)2Mn·4H2O、Mn(NO3)2、MnCl2·4H2O、MnSO4·4H2O或MnBr2·4H2O。
进一步地,上述的制备方法,所述催化助剂前驱体选自铈盐、偏钒酸盐、钒酸盐、钨酸盐、铜盐、亚铁盐、铁盐、钴盐、锆盐、钼酸盐、锡盐、锑盐、钐盐、钆盐、镨盐或钬盐中的一种或两种以上的组合。
进一步地,上述的制备方法,所述高温焙烧是,温度为300-1000℃,焙烧时间为0.1- 20h。
与现有技术相比,本发明的有益效果是:
(1)本发明制备的催化剂在低温150℃即可达到100%的脱硝转化率,而且具有较高的抗硫性能,同时长时间稳定。
(2)本发明采用的制备方法简单,便于实现工业化生产。
(3)本发明采用的原料廉价易得,可大大降低生产成本,而且生产过程环保无污染,工业化应用前景良好。
附图说明
图1是实施例1制备的低温高效高抗硫长时间稳定SCR脱硝催化剂成品在不同温度下的脱硝效率曲线。
图2是实施例1制备的低温高效高抗硫长时间稳定SCR脱硝催化剂成品在150℃时二氧化硫浓度为100mg/m3的抗硫性能测试曲线。
图3是实施例1制备的低温高效高抗硫长时间稳定SCR脱硝催化剂成品在150℃时长时间稳定性测试曲线。
具体实施方式
实施例1
1、称取(CH3COO)2Ni·4H2O(16.6g,0.07mol)、(CH3COO)2Mn·4H2O(40.83g,0.17mol)和C4H6CoO4·4H2O(16.6g,0.07mol)溶解在200mL去离子水中,充分搅拌,得浸渍液。
2、取载体堇青石蜂窝陶瓷(浸泡前称重)于浸渍液中浸泡10min,取出,于120℃下干燥1h。干燥后放入坩埚,在马弗炉中500℃焙烧3h。称重,算出活性组分和催化助剂的负载量。
3、重复步骤2浸渍-干燥-高温焙烧过程,直至活性组分和催化助剂在载体表面的负载量为,按质量百分比为载体浸泡前质量的10-15%时,即制得所需要的低温高效高抗硫长时间稳定SCR脱硝催化剂成品。
实施例2
1、称取Ni(NO3)2·6H2O(33.2g,0.11mol)、浓度为50%的Mn(NO3)2(20.4g,0.09mol)和Fe(NO3)3·9H2O(8.8g,0.02mol)溶解在200mL去离子水中,充分搅拌,得浸渍液。
2、取载体二氧化钛(浸泡前称重)于浸渍液中浸泡20min,取出,于120℃下干燥1h。干燥后放入坩埚,在马弗炉中400℃焙烧6h。称重,算出活性组分和催化助剂的负载量。
3、重复步骤2浸渍-干燥-高温焙烧过程,直至活性组分和催化助剂在载体表面的负载量为,按质量百分比为载体浸泡前质量的15-20%时,即制得所需要的低温高效高抗硫长时间稳定SCR脱硝催化剂成品。
实施例3
1、称取Ni(NO3)2·6H2O(25.4g,0.09mol)、(CH3COO)2Mn·4H2O(61.2g,0.25mol)、Fe(NO3)3·9H2O(16g,0.04mol)、Ce(NO3)3·6H2O(11.1g,0.03mol)溶解在200mL去离子水中,充分搅拌,得浸渍液。
2、将载体氧化铝(浸泡前称重)于浸渍液中浸泡30min,取出,于120℃下干燥1h。干燥后放入坩埚,在马弗炉中600℃焙烧8h。称重,算出活性组分和催化助剂的负载量。
3、重复步骤2浸渍-干燥-高温焙烧过程,直至活性组分和催化助剂在载体表面的负载量为,按质量百分比为载体浸泡前质量的20-25%时,即制得所需要的低温高效高抗硫长时间稳定SCR脱硝催化剂成品。
实施例4
将实施例1制备好的催化剂成品固定于管式炉中,模拟尾气通入其中,成分为1300mg/m3 NO、1300mg/m3 NH3和5%O2,其余为氮气,空速为9000h-1,测试温度分别为 50℃、80℃、100℃、120℃、150℃、180℃、200℃、220℃。结果如表1和图1。
抗硫测试时,在上述模拟尾气中再混入100mg/m3 SO2气体,空速为9000h-1,测试温度为150℃。结果如表1和图2。
表1实施例1催化剂测试结果
由表1和图1可见,当测试温度为150℃时,本发明的催化剂,氮氧化物的脱除率达到了100%。
由表1和图2可见,在150℃如此低温下仍然拥有高的催化活性,这是目前市场上的催化剂所不能达到的。并且在此温度下,催化剂表现出了良好的抗硫性能。如图3所示, 150℃时经过长时间的测试,催化剂的活性没有出现衰减。
Claims (4)
1.一种低温高效高抗硫长时间稳定SCR脱硝催化剂,其特征在于:所述低温高效高抗硫长时间稳定SCR脱硝催化剂是,载体上负载有活性组分和催化助剂,所述载体选自堇青石蜂窝陶瓷、二氧化钛、活性炭和氧化铝中的一种或两种以上的组合;所述活性组分是氧化镍和二氧化锰;制备方法包括如下步骤:
1)将镍盐、锰盐和催化助剂前驱体溶于水中,得浸渍液;
所述镍盐选自(CH3COO)2Ni·4H2O或Ni(NO3)2·6H2O;
所述锰盐选自(CH3COO)2Mn·4H2O或Mn(NO3)2;
所述催化助剂前驱体选自C4H6CoO4·4H2O、Fe(NO3)3·9H2O和/或Ce(NO3)3·6H2O;
2)将载体于浸渍液中浸渍10-30min,取出干燥,高温焙烧后,称重;
3)重复步骤2)浸渍、干燥和高温焙烧过程,直至活性组分和催化助剂的总负载量为,按质量百分比为载体质量的10-25%时,得目标催化剂;
按摩尔比,活性组分:催化助剂=(1-2): 1;
所述高温焙烧是,温度为300-600℃,焙烧时间为3-8h;
所述催化剂在低温150℃即达到100%的脱硝转化率。
2.根据权利要求1所述的一种低温高效高抗硫长时间稳定SCR脱硝催化剂,其特征在于:制备方法包括如下步骤:
1)称取0.07mol (CH3COO)2Ni·4H2O、0.17mol (CH3COO)2Mn·4H2O和0.07molC4H6CoO4·4H2O溶解在200mL去离子水中,充分搅拌,得浸渍液;
2)取载体堇青石蜂窝陶瓷于浸渍液中浸泡10min,取出,于120℃下干燥1h;干燥后放入坩埚,在马弗炉中500℃焙烧3h;称重,算出活性组分和催化助剂的负载量;
3)重复步骤2)浸渍-干燥-高温焙烧过程,直至活性组分和催化助剂在载体表面的负载量为,按质量百分比为载体浸泡前质量的10-15%时,制得低温高效高抗硫长时间稳定SCR脱硝催化剂。
3.根据权利要求1所述的一种低温高效高抗硫长时间稳定SCR脱硝催化剂,其特征在于:制备方法包括如下步骤:
1)称取0.11mol Ni(NO3)2·6H2O、0.09mol浓度为50%的Mn(NO3)2和 0.02mol Fe(NO3)3·9H2O溶解在200mL去离子水中,充分搅拌,得浸渍液;
2)取载体二氧化钛于浸渍液中浸泡20min,取出,于120℃下干燥1h;干燥后放入坩埚,在马弗炉中400℃焙烧6h;称重,算出活性组分和催化助剂的负载量;
3)重复步骤2)浸渍-干燥-高温焙烧过程,直至活性组分和催化助剂在载体表面的负载量为,按质量百分比为载体浸泡前质量的15-20%时,制得低温高效高抗硫长时间稳定SCR脱硝催化剂。
4.根据权利要求1所述的一种低温高效高抗硫长时间稳定SCR脱硝催化剂,其特征在于:制备方法包括如下步骤:
1)称取0.09mol Ni(NO3)2·6H2O、0.25mol (CH3COO)2Mn·4H2O、0.04mol Fe(NO3)3·9H2O、0.03mol Ce(NO3)3·6H2O溶解在200mL去离子水中,充分搅拌,得浸渍液;
2)将载体氧化铝于浸渍液中浸泡30min,取出,于120℃下干燥1h;干燥后放入坩埚,在马弗炉中600℃焙烧8h;称重,算出活性组分和催化助剂的负载量;
3)重复步骤2)浸渍-干燥-高温焙烧过程,直至活性组分和催化助剂在载体表面的负载量为,按质量百分比为载体浸泡前质量的20-25%时,制得低温高效高抗硫长时间稳定SCR脱硝催化剂。
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Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104307508A (zh) * | 2014-10-17 | 2015-01-28 | 辽宁科隆精细化工股份有限公司 | 一种可快速干燥的scr脱硝催化剂制备方法 |
CN105727985A (zh) * | 2016-01-27 | 2016-07-06 | 中国建筑材料科学研究总院 | 蜂窝整体式低温脱硝催化剂及其制备方法 |
CN105879879A (zh) * | 2016-05-23 | 2016-08-24 | 东南大学 | 一种高抗硫超低温scr脱硝催化剂及其制备方法 |
CN106423193A (zh) * | 2016-09-21 | 2017-02-22 | 中国建筑材料科学研究总院 | 蜂窝状锰系脱硝催化剂及其制备方法 |
CN106925294A (zh) * | 2017-05-11 | 2017-07-07 | 安徽工业大学 | 一种泡沫金属镍负载锰基低温scr催化剂及其制备方法 |
JP2019076895A (ja) * | 2007-04-26 | 2019-05-23 | ジョンソン、マッセイ、パブリック、リミテッド、カンパニーJohnson Matthey Public Limited Company | 遷移金属/ゼオライトscr触媒 |
CN109876824A (zh) * | 2019-04-03 | 2019-06-14 | 四川大学 | 一种MnO2-NiO活性焦低温脱硝催化剂及其制备方法 |
-
2022
- 2022-04-29 CN CN202210471896.6A patent/CN114713243B/zh active Active
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2019076895A (ja) * | 2007-04-26 | 2019-05-23 | ジョンソン、マッセイ、パブリック、リミテッド、カンパニーJohnson Matthey Public Limited Company | 遷移金属/ゼオライトscr触媒 |
CN104307508A (zh) * | 2014-10-17 | 2015-01-28 | 辽宁科隆精细化工股份有限公司 | 一种可快速干燥的scr脱硝催化剂制备方法 |
CN105727985A (zh) * | 2016-01-27 | 2016-07-06 | 中国建筑材料科学研究总院 | 蜂窝整体式低温脱硝催化剂及其制备方法 |
CN105879879A (zh) * | 2016-05-23 | 2016-08-24 | 东南大学 | 一种高抗硫超低温scr脱硝催化剂及其制备方法 |
CN106423193A (zh) * | 2016-09-21 | 2017-02-22 | 中国建筑材料科学研究总院 | 蜂窝状锰系脱硝催化剂及其制备方法 |
CN106925294A (zh) * | 2017-05-11 | 2017-07-07 | 安徽工业大学 | 一种泡沫金属镍负载锰基低温scr催化剂及其制备方法 |
CN109876824A (zh) * | 2019-04-03 | 2019-06-14 | 四川大学 | 一种MnO2-NiO活性焦低温脱硝催化剂及其制备方法 |
Non-Patent Citations (1)
Title |
---|
Nickel-doped Mn/TiO2 as an efficient catalyst for the low-temperature SCR of NO with NH3: Catalytic evaluation and characterizations;Boningari Thirupathi et al.;《Journal of Catalysis》;第288卷;第74-83页 * |
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