JP2003321225A - Method for producing lanthanum ruthenate - Google Patents
Method for producing lanthanum ruthenateInfo
- Publication number
- JP2003321225A JP2003321225A JP2002126911A JP2002126911A JP2003321225A JP 2003321225 A JP2003321225 A JP 2003321225A JP 2002126911 A JP2002126911 A JP 2002126911A JP 2002126911 A JP2002126911 A JP 2002126911A JP 2003321225 A JP2003321225 A JP 2003321225A
- Authority
- JP
- Japan
- Prior art keywords
- catalyst
- ruthenate
- carrier
- aqueous solution
- producing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 26
- 229910052746 lanthanum Inorganic materials 0.000 title claims abstract description 15
- FZLIPJUXYLNCLC-UHFFFAOYSA-N lanthanum atom Chemical compound [La] FZLIPJUXYLNCLC-UHFFFAOYSA-N 0.000 title claims abstract description 13
- 239000003054 catalyst Substances 0.000 claims abstract description 36
- 239000002244 precipitate Substances 0.000 claims abstract description 14
- 239000007864 aqueous solution Substances 0.000 claims abstract description 13
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000001301 oxygen Substances 0.000 claims abstract description 13
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 13
- 229910052707 ruthenium Inorganic materials 0.000 claims abstract description 10
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000013078 crystal Substances 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 238000001556 precipitation Methods 0.000 claims abstract description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 26
- 230000003647 oxidation Effects 0.000 claims description 21
- 238000010438 heat treatment Methods 0.000 claims description 17
- 238000006243 chemical reaction Methods 0.000 claims description 16
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 14
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 12
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 12
- 229930195733 hydrocarbon Natural products 0.000 claims description 11
- 150000002430 hydrocarbons Chemical class 0.000 claims description 11
- 239000004071 soot Substances 0.000 claims description 11
- 239000000126 substance Substances 0.000 claims description 10
- 238000002425 crystallisation Methods 0.000 claims description 9
- 230000008025 crystallization Effects 0.000 claims description 9
- 229910021645 metal ion Inorganic materials 0.000 claims description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 238000006722 reduction reaction Methods 0.000 claims description 7
- 239000013618 particulate matter Substances 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 238000002485 combustion reaction Methods 0.000 claims description 4
- 229910001404 rare earth metal oxide Inorganic materials 0.000 claims description 4
- 229910000287 alkaline earth metal oxide Inorganic materials 0.000 claims description 3
- 239000003344 environmental pollutant Substances 0.000 claims description 3
- 238000001704 evaporation Methods 0.000 claims description 3
- 230000008929 regeneration Effects 0.000 claims description 3
- 238000011069 regeneration method Methods 0.000 claims description 3
- 239000000969 carrier Substances 0.000 claims description 2
- 238000002156 mixing Methods 0.000 claims description 2
- 231100000719 pollutant Toxicity 0.000 claims description 2
- 238000000151 deposition Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-M hydroxide Chemical compound [OH-] XLYOFNOQVPJJNP-UHFFFAOYSA-M 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 22
- 239000000243 solution Substances 0.000 abstract description 8
- 150000002500 ions Chemical class 0.000 abstract 2
- YXEUGTSPQFTXTR-UHFFFAOYSA-K lanthanum(3+);trihydroxide Chemical compound [OH-].[OH-].[OH-].[La+3] YXEUGTSPQFTXTR-UHFFFAOYSA-K 0.000 abstract 1
- VDRDGQXTSLSKKY-UHFFFAOYSA-K ruthenium(3+);trihydroxide Chemical compound [OH-].[OH-].[OH-].[Ru+3] VDRDGQXTSLSKKY-UHFFFAOYSA-K 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 16
- 239000000843 powder Substances 0.000 description 13
- 239000000047 product Substances 0.000 description 13
- MRELNEQAGSRDBK-UHFFFAOYSA-N lanthanum(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[La+3].[La+3] MRELNEQAGSRDBK-UHFFFAOYSA-N 0.000 description 12
- 230000003197 catalytic effect Effects 0.000 description 9
- 239000011259 mixed solution Substances 0.000 description 9
- 239000012298 atmosphere Substances 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 229910052878 cordierite Inorganic materials 0.000 description 6
- 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 description 6
- 239000012299 nitrogen atmosphere Substances 0.000 description 6
- 239000002002 slurry Substances 0.000 description 6
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 230000001590 oxidative effect Effects 0.000 description 5
- 239000002245 particle Substances 0.000 description 5
- 238000000975 co-precipitation Methods 0.000 description 4
- 239000007787 solid Substances 0.000 description 4
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 3
- 239000004202 carbamide Substances 0.000 description 3
- 239000008367 deionised water Substances 0.000 description 3
- 229910021641 deionized water Inorganic materials 0.000 description 3
- 238000010981 drying operation Methods 0.000 description 3
- 239000002243 precursor Substances 0.000 description 3
- 238000003303 reheating Methods 0.000 description 3
- 230000002194 synthesizing effect Effects 0.000 description 3
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 2
- 238000004438 BET method Methods 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 235000011114 ammonium hydroxide Nutrition 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000007598 dipping method Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- ICAKDTKJOYSXGC-UHFFFAOYSA-K lanthanum(iii) chloride Chemical compound Cl[La](Cl)Cl ICAKDTKJOYSXGC-UHFFFAOYSA-K 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 230000001376 precipitating effect Effects 0.000 description 2
- YBCAZPLXEGKKFM-UHFFFAOYSA-K ruthenium(iii) chloride Chemical compound [Cl-].[Cl-].[Cl-].[Ru+3] YBCAZPLXEGKKFM-UHFFFAOYSA-K 0.000 description 2
- 238000003746 solid phase reaction Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000010189 synthetic method Methods 0.000 description 2
- 101100325793 Arabidopsis thaliana BCA2 gene Proteins 0.000 description 1
- 102100033041 Carbonic anhydrase 13 Human genes 0.000 description 1
- 102100033007 Carbonic anhydrase 14 Human genes 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 101000867860 Homo sapiens Carbonic anhydrase 13 Proteins 0.000 description 1
- 101000867862 Homo sapiens Carbonic anhydrase 14 Proteins 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 description 1
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 1
- 238000002447 crystallographic data Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000004817 gas chromatography Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000001144 powder X-ray diffraction data Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 238000001291 vacuum drying Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、高純度・高結晶質
で、比表面積が大きく、耐熱性が高いルテニウム酸塩の
製造方法およびこの方法で得られたルテニウム酸塩触媒
に関する。TECHNICAL FIELD The present invention relates to a method for producing ruthenate, which is highly pure and highly crystalline, has a large specific surface area and high heat resistance, and a ruthenate catalyst obtained by this method.
【０００２】[0002]
【従来の技術】ルテニウム酸塩系化合物の中で、Ｌａ
3.5Ｒｕ4Ｏ13の合成法として下記の固相反応合成法が報
告されている。
２Ｌａ2Ｏ3＋４ＲｕＯ2＞Ｌａ3.5Ｒｕ4Ｏ13（反応条
件、真空中、９００℃で４８時間加熱：Ｊ．Ｓｏｌｉｄ
Ｓｔａｔｅ Ｃｈｅｍ．３２，１５１，１９８０）2. Description of the Related Art Among ruthenate compounds, La
The following solid-phase reaction synthetic method has been reported as a synthetic method of 3.5 Ru 4 O 13 . 2La 2 O 3 + 4RuO 2 > La 3.5 Ru 4 O 13 (reaction condition, heating in vacuum at 900 ° C. for 48 hours: J. Solid
State Chem. 32, 151, 1980)
【０００３】上記の固相反応プロセスでは、真空加熱処
理を必要とするため、高価な製造装置と煩雑な操作を必
要とし、また、大きな比表面積を得ることが困難であ
る。なお、本物質の製造法に関する特許（海外を含む）
はこれまで報告されていない。Since the above solid-phase reaction process requires vacuum heat treatment, it requires an expensive manufacturing apparatus and complicated operations, and it is difficult to obtain a large specific surface area. Patents related to the manufacturing method of this substance (including overseas)
Has never been reported.
【０００４】[0004]
【発明が解決しようとする課題】従来のルテニウム酸ラ
ンタンＬａ3.5Ｒｕ4Ｏ13の合成法は以下の課題を有して
いる。
１．真空を要する製造プロセスで、高コストである。
２．得られた生成物は比表面積が小さい。
３．触媒担体またはその他の担体上に直接合成する手法
が開発されていない。
４．触媒担体またはその他の担体上に一様で、かつ細密
に分散させる手法が開発されていない。
５．触媒機能の評価がなされていない。また、類似の触
媒特性を持つＬａＲｕＯ3は９００℃以上の高温下での
長時間熱安定性が不十分であり、ガソリンおよびディー
ゼルエンジン等への利用が耐久性において制限されてい
る。The conventional method for synthesizing lanthanum ruthenate La 3.5 Ru 4 O 13 has the following problems. 1. It is a manufacturing process that requires a vacuum and is expensive. 2. The obtained product has a small specific surface area. 3. Direct synthesis on catalyst supports or other supports has not been developed. 4. No method has been developed for uniform and fine dispersion on a catalyst carrier or other carrier. 5. The catalytic function has not been evaluated. Further, LaRuO 3 having similar catalytic properties has an insufficient long-term thermal stability at a high temperature of 900 ° C. or higher, and its use in gasoline and diesel engines is limited in durability.
【０００５】[0005]
【課題を解決するための手段】本発明者は、上記の従来
技術の課題を解決したルテニウムペロブスカイトの新規
な合成法を開発し、この方法により優れた触媒特性を持
つＬａ3.5Ｒｕ4Ｏ13が得られることを見いだした。すな
わち、本発明は、化学式Ｌａ3.5Ｒｕ4Ｏ13（Ｌａは酸素
１２配位ランタニウム、Ｒｕは酸素６配位ルテニウム、
Ｏは酸素）で示されるルテニウム酸ランタンの製造方法
であって、反応容器内でＬａの金属イオンを含む水溶液
とＲｕの金属イオンを含む水溶液を沈殿形成液と反応さ
せてＬａおよびＲｕの水酸化物の沈殿体を作成し、加熱
して結晶化することを特徴とするルテニウム酸塩の製造
方法である。The present inventor has developed a novel method for synthesizing ruthenium perovskite which has solved the above-mentioned problems of the prior art, and by this method, La 3.5 Ru 4 O 13 having excellent catalytic properties can be obtained. I found what I could get. That is, the present invention provides the chemical formula La 3.5 Ru 4 O 13 (La is oxygen 12-coordinated lanthanum, Ru is oxygen 6-coordinated ruthenium,
O is oxygen), which is a method for producing lanthanum ruthenate, wherein an aqueous solution containing metal ions of La and an aqueous solution containing metal ions of Ru are reacted with a precipitation forming liquid in a reaction vessel to oxidize La and Ru. A method for producing a ruthenate is characterized in that a precipitate of the product is prepared and heated to crystallize.
【０００６】また、本発明は、上記沈殿体を触媒担体ま
たはその他の担体（粉末および成形体など）上に沈積、
接着、または塗布した後加熱して結晶化することにより
Ｌａ 3.5Ｒｕ4Ｏ13の被膜を担体上形成することを特徴と
する上記のルテニウム酸塩の製造方法である。また、本
発明は、上記触媒担体またはその他の担体はアルカリ土
類酸化物または希土類金属酸化物を被覆したものである
ことを特徴とする上記のルテニウム酸塩の製造方法であ
る。In the present invention, the above precipitate is used as a catalyst carrier.
Or on other carriers such as powders and compacts,
By gluing or applying and then heating to crystallize
La 3.5RuFourO13Is formed on the carrier.
The method for producing a ruthenate described above. Also books
According to the invention, the above catalyst carrier or other carrier is alkaline earth.
Coated with oxides or rare earth metal oxides
A method for producing a ruthenate described above, which is characterized in that
It
【０００７】また、本発明は、化学式Ｌａ3.5Ｒｕ4Ｏ13
（Ｌａは酸素１２配位ランタニウム、Ｒｕは酸素６配位
ルテニウム、Ｏは酸素）で示されるルテニウム酸ランタ
ンの製造方法であって、反応容器内でＬａの金属イオン
を含む水溶液とＲｕの金属イオンを含む水溶液を混合し
た混合水溶液を直接加熱し、蒸発乾固した後、加熱して
結晶化することを特徴とするルテニウム酸塩の製造方法
である。The present invention also provides a chemical formula of La 3.5 Ru 4 O 13
(La is oxygen 12-coordinated lanthanum, Ru is oxygen 6-coordinated ruthenium, O is oxygen), which is a method for producing lanthanum ruthenate, wherein an aqueous solution containing metal ions of La and metal ions of Ru Is a method for producing a ruthenate, which is characterized in that a mixed aqueous solution obtained by mixing an aqueous solution containing is directly heated, evaporated to dryness, and then heated to be crystallized.
【０００８】また、本発明は、上記の製造方法で得られ
たルテニウム酸塩からなり、メタンの燃焼に対する触
媒、ディーゼル排出粒状物質フィルターの再生に有効な
炭素及びディーゼル排出粒状物質（すす）の酸化に対す
る触媒、ディーゼル排出粒状物質のオンライン酸化に対
する触媒、ディーゼル車排出汚染物質（ディーゼル排出
粒状物質（すす）とＮＯｘ）の除去に対する触媒、一酸
化炭素の酸化反応に対する触媒、有意な一酸化炭素の発
生を伴わない炭化水素の酸化反応に対する触媒、揮発性
有機物質の酸化に対する触媒、または一酸化炭素または
炭化水素によるＮＯｘの還元反応に対する触媒として用
いられることを特徴とするルテニウム酸塩触媒である。
本発明の触媒は、９００℃以上の高温（９００〜１０５
０℃）下で、長時間安定である。The present invention further comprises a ruthenate obtained by the above-mentioned production method, which is a catalyst for combustion of methane, carbon effective for regeneration of diesel exhaust particulate matter filter, and oxidation of diesel exhaust particulate matter (soot). , Catalyst for on-line oxidation of diesel exhaust particulate matter, catalyst for removal of diesel vehicle exhaust pollutants (diesel exhaust particulate matter (soot) and NOx), catalyst for carbon monoxide oxidation reaction, significant carbon monoxide generation A ruthenate catalyst, which is used as a catalyst for an oxidation reaction of a hydrocarbon which does not accompany, a catalyst for an oxidation of a volatile organic substance, or a catalyst for a reduction reaction of NOx by carbon monoxide or a hydrocarbon.
The catalyst of the present invention has a high temperature (900 to 105) of 900 ° C. or higher.
It is stable at 0 ° C for a long time.
【０００９】本発明の製造方法は、概ね以下の反応式基
づいてルテニウムペロブスカイトを製造するものであ
る。
共沈法
Ｌａ3+＋Ｒｕ3+＋Ａ＋Ｌ＋Ｈ2Ｏ→Ｌａ・Ｒｕ・Ｏ・Ｈ
・Ａ・Ｒ（共沈操作）
Ｌａ・Ｒｕ・Ｏ・Ｈ・Ａ・Ｒ→Ｌａ・Ｒｕ・Ｏ・Ａ・Ｈ
2Ｏ（蒸発乾固）
Ｌａ・Ｒｕ・Ｏ・Ａ・Ｈ2Ｏ→Ｌａ3.5Ｒｕ4Ｏ13（加
熱、結晶化、粒径制御）The production method of the present invention generally produces ruthenium perovskite based on the following reaction formula. Coprecipitation method La 3+ + Ru 3+ + A + L + H 2 O → La ・ Ru ・ O ・ H
・ A ・ R (coprecipitation operation) La ・ Ru ・ O ・ H ・ A ・ R → La ・ Ru ・ O ・ A ・ H
2 O (evaporation to dryness) La ・ Ru ・ O ・ A ・ H 2 O → La 3.5 Ru 4 O 13 (heating, crystallization, particle size control)
【００１０】直接加熱法
Ｌａ3+＋Ｒｕ3+＋Ａ＋Ｈ2Ｏ→Ｌａ・Ｒｕ・Ｏ・Ａ・Ｈ2
Ｏ（蒸発乾固）
Ｌａ・Ｒｕ・Ｏ・Ａ・Ｈ2Ｏ→Ｌａ3.5Ｒｕ4Ｏ13（加
熱、結晶化、粒径制御）
Ａ：ランタンまたはルテニウムの水溶性原料の陰イオン
成分、Ｌ：アンモニアや尿素等の沈殿形成剤、Ｒ：沈殿
形成剤の残留成分Direct heating method La 3+ + Ru 3+ + A + H 2 O → La.Ru.O.A.H 2
O (evaporation to dryness) La.Ru.O.A.H 2 O → La 3.5 Ru 4 O 13 (heating, crystallization, particle size control) A: Anion component of water-soluble raw material of lanthanum or ruthenium, L: Precipitating agent such as ammonia or urea, R: Residual component of precipitating agent
【００１１】本発明のルテニウム酸塩の合成法は従来法
と比較して以下の特徴を有している。
１．低コストである。
２．触媒等への利用に必要な大きな比表面積を持ちかつ
高純度な結晶が得られる。
３．触媒担体またはその他の担体上に直接合成すること
ができる。
４．触媒担体またはその他の担体上に一様で、かつ細密
に分散した材料を合成できる。
５．大気または排ガス中のＣＯまたはＨＣの酸化触媒反
応、排ガス中のＨＣまたはＣＯによるＮＯｘの還元触媒
反応に対する優れた触媒特性を持ち、かつ高温耐熱性
（１０５０℃程度）を有するＬａ3.5Ｒｕ4Ｏ13を合成で
きる。The method for synthesizing the ruthenate of the present invention has the following features as compared with the conventional method. 1. Low cost. 2. Crystals having a large specific surface area and high purity required for use as a catalyst can be obtained. 3. It can be synthesized directly on the catalyst support or other support. 4. A uniform and finely dispersed material can be synthesized on a catalyst support or other support. 5. La 3.5 Ru 4 O 13 which has excellent catalytic properties for the oxidation catalytic reaction of CO or HC in the air or exhaust gas and the reduction catalytic reaction of NOx by HC or CO in exhaust gas, and has high temperature heat resistance (about 1050 ° C.) Can be synthesized.
【００１２】本発明の製造方法で得られたルテニウム酸
塩は、例えば、下記の用途に好適である。
１．環境に過度の影響を与えないメタンの燃焼によるエ
ネルギー製造。
２．ＬａＲｕＯ3ペロブスカイトが利用できないような
高温域の触媒利用。
３．ディーゼル排出粒子フィルターの再生用触媒、ディ
ーゼル排出ガス中のオンラインすす酸化処理、および、
ＮＯｘ−すすの同時除去。
４．すす等に含まれる蒸発性有機物の効率的酸化処理。
５．酸化条件下におけるＣＯの効率的酸化処理およびＣ
Ｏの生成を伴わないＨＣの効率的酸化処理、および化学
量論条件下におけるＣＯ＋ＮＯｘおよびＨＣ＋ＮＯｘの
酸化還元同時処理。
６．化学量論条件下におけるＨＣ＋ＣＯ＋ＮＯｘの酸化
還元同時処理。
７．厚膜レジスターやプリント回路技術における利用。The ruthenate obtained by the production method of the present invention is suitable for the following uses, for example. 1. Energy production by combustion of methane that does not excessively affect the environment. 2. Use of catalyst in high temperature range where LaRuO 3 perovskite cannot be used. 3. Regeneration catalyst for diesel exhaust particle filter, online soot oxidation treatment in diesel exhaust gas, and
NOx-simultaneous removal of soot. 4. Efficient oxidation treatment of evaporative organic substances contained in soot. 5. Efficient oxidation of CO under oxidizing conditions and C
Efficient oxidation treatment of HC without generation of O, and simultaneous redox treatment of CO + NOx and HC + NOx under stoichiometric conditions. 6. Simultaneous redox treatment of HC + CO + NOx under stoichiometric conditions. 7. Use in thick film resistors and printed circuit technology.
【００１３】[0013]
【発明の実施の形態】本発明のＬａ3.5Ｒｕ4Ｏ13の製造
方法の工程を以下に説明する。塩化物等のＬａ3+とＲｕ
3+の水溶性化合物（前駆体）を水に溶解し、混合する。
混合溶液を定速度で撹拌しながら沈殿形成液（アンモニ
ア、尿素等）を滴下して、共沈させる。沈殿が落ち着い
てから濾過・洗浄を行う。沈殿体をオーブンで６０〜１
５０℃程度に加熱乾燥してから、窒素雰囲気ないし大気
中で、４００℃、２〜８時間の条件で予備加熱する。得
られた乾燥体を粉砕し、９５０〜１０００℃、２〜８時
間の条件で再加熱して結晶化する。このように二段階で
加熱するのは、粒子の異常結晶成長を抑制し、結晶の均
一化を図るために必要とされる。得られた生成物の比表
面積はＢＥＴ法により２．０〜６．０ｍ2／ｇの値を示
す。上記法に代えて、混合溶液を蒸発乾固した後、加熱
して結晶化してもよい。The steps of the method for producing La 3.5 Ru 4 O 13 of the present invention will be described below. La 3+ and Ru such as chloride
A 3+ water-soluble compound (precursor) is dissolved in water and mixed.
While stirring the mixed solution at a constant speed, a precipitation-forming liquid (ammonia, urea, etc.) is dropped to coprecipitate. After the precipitate has settled down, filtration and washing are performed. Precipitate in the oven 60-1
After heating and drying at about 50 ° C., preheating is performed in a nitrogen atmosphere or air at 400 ° C. for 2 to 8 hours. The obtained dried body is pulverized and re-heated under the conditions of 950 to 1000 ° C. for 2 to 8 hours to crystallize. Such heating in two stages is necessary to suppress abnormal crystal growth of particles and to make crystals uniform. The specific surface area of the obtained product shows a value of 2.0 to 6.0 m 2 / g by the BET method. Instead of the above method, the mixed solution may be evaporated to dryness and then heated to crystallize.
【００１４】コーディエライト担体またはアルミナ粉末
担体に沈殿体を被覆する工程を以下に説明する。Ｌａ3+
とＲｕ3+の前駆体を水に溶解し、混合する。混合溶液に
コーディエライト担体またはアルミナ粉末担体（これら
はアルカリ土類酸化物あるいは希土類酸化物を事前に被
覆しておくことが望ましい）を浸して、次に、窒素雰囲
気あるいは大気中で乾燥する。これらのプロセスを繰り
返し、所定の装填量になったら大気中、３００〜４００
℃、１〜８時間の条件で予備加熱する。次に、６００〜
１０５０℃、１〜１２時間の条件で再加熱して結晶化す
る。この方法によって、担体上に分散し、固着したＬａ
3.5Ｒｕ4Ｏ13を得ることができる。得られた生成物の比
表面積はＢＥＴ法により１３〜６４ｍ2／ｇの値を示
す。The process of coating the cordierite carrier or the alumina powder carrier with the precipitate will be described below. La 3+
And Ru 3+ precursor are dissolved in water and mixed. A cordierite carrier or an alumina powder carrier (which is preferably coated with an alkaline earth oxide or a rare earth oxide in advance) is dipped in the mixed solution, and then dried in a nitrogen atmosphere or the atmosphere. Repeat these processes until the specified load is reached, and then 300-400
Preliminary heating is performed under the conditions of ℃ and 1 to 8 hours. Next, 600-
Recrystallization is carried out under the conditions of 1050 ° C. and 1 to 12 hours. By this method, the La dispersed and fixed on the carrier is
3.5 Ru 4 O 13 can be obtained. The specific surface area of the obtained product shows a value of 13 to 64 m 2 / g by the BET method.
【００１５】上記の方法の代わりに、共沈法で沈殿体を
得る前のスラリーにコーディエライト担体またはアルミ
ナ粉末担体（これらはアルカリ土類酸化物あるいは希土
類酸化物を事前に被覆しておくことが望ましい）を浸漬
し、次に、窒素雰囲気あるいは大気中で乾燥してもよ
い。Instead of the above-mentioned method, the slurry before obtaining the precipitate by the coprecipitation method is a cordierite carrier or an alumina powder carrier (these should be coated with an alkaline earth oxide or a rare earth oxide in advance). Is desirable) and then dried in a nitrogen atmosphere or in the atmosphere.
【００１６】[0016]
【実施例】実施例１
４．４２５７ｇのＬａを含む３塩化ランタン溶液２００
ｍｌと３．６８０９８ｇのＲｕを含む３塩化ルテニウム
溶液２００ｍｌおよび脱イオン水１００ｍｌを混合して
溶液５００ｍｌを作製した。混合溶液を毎分１００回転
の定速度で撹拝しながら沈殿形成液として２規定のアン
モニア水８００ｍｌを毎分１００ｍｌの割合で滴下し
て、共沈により沈殿させた（毎分１００回転の定速度で
撹拝しているアンモニア水に混合溶液を毎分１００ｍｌ
の割合で滴下することによっても共沈体を得ることがで
きた）。EXAMPLE 1 Lanthanum trichloride solution 200 containing 4.4257 g of La
200 ml of a ruthenium trichloride solution containing 3.68098 g of Ru and 100 ml of deionized water were mixed to prepare 500 ml of a solution. While stirring the mixed solution at a constant speed of 100 rpm, 800 ml of 2N aqueous ammonia was added dropwise at a rate of 100 ml per minute as a precipitate-forming liquid to precipitate by coprecipitation (constant speed of 100 rpm). 100 ml / min of mixed solution in ammonia water stirred at
A coprecipitate could also be obtained by dropping at a ratio of.
【００１７】沈殿体を２時間静置し、脱イオン水でろ
過、洗浄した。次に、７０℃で５時間乾燥した後、４０
０℃で４時間窒素雰囲気で予備加熱した。得られた乾燥
物を９０％が６μ以下の粒径になるように粉砕し、９５
０〜１０００℃で４時間、大気中で再加熱して結晶化
し、最終生成物を作成した。上記の方法で得られた生成
物をＸＲＤ、ＢＥＴ、ＴＧ−ＤＴＡで分析した。図１
は、得られた生成物の粉末Ｘ繰回折データのグラフであ
る。図１に示すように、Ｌａ3.5Ｒｕ4Ｏ13固有の粉末Ｘ
繰回折図形を示した。また、比較的大きな比表面積４．
０ｍ2／ｇを持ち、１０５０℃の高温下でも長時間安定
であった。The precipitate was allowed to stand for 2 hours, filtered with deionized water and washed. Then, after drying at 70 ° C. for 5 hours, 40
It was preheated at 0 ° C. for 4 hours in a nitrogen atmosphere. The dried product obtained is pulverized so that 90% has a particle size of 6μ or less, and 95
The final product was prepared by reheating in air at 0 to 1000 ° C. for 4 hours for crystallization. The product obtained by the above method was analyzed by XRD, BET and TG-DTA. Figure 1
[Fig. 4] is a graph of powder X diffraction data of the obtained product. As shown in FIG. 1, powder X specific to La 3.5 Ru 4 O 13
The repeated diffraction pattern is shown. In addition, a relatively large specific surface area 4.
It had 0 m 2 / g and was stable for a long time even at a high temperature of 1050 ° C.
【００１８】得られた生成物について、流通式触媒反応
装置を用いて触媒実験をした。反応系と生成系のガスは
ガスクロマトグラフィーによって分析した。図２は、得
られたＬａ3.5Ｒｕ4Ｏ13上のメタンの酸化による転化
率、図３は、同じく、一酸化炭素および炭化水素の酸化
による転化率（いずれも酸化雰囲気条件）、図４は、同
じく、一酸化炭素および炭化水素の酸化とＮＯの還元に
よる転化率（いずれも化学量論条件）、図５は、同じ
く、炭化水素または一酸化炭素によるＮＯの還元による
転化率、図６は、同じく、炭素（すす）の酸化による転
化率、である。A catalyst experiment was conducted on the obtained product using a flow-type catalytic reactor. The gas of the reaction system and the gas of the production system were analyzed by gas chromatography. FIG. 2 is a conversion rate of the obtained La 3.5 Ru 4 O 13 by oxidation of methane, FIG. 3 is a conversion rate of carbon monoxide and hydrocarbons by oxidation (both in oxidizing atmosphere conditions), and FIG. Similarly, conversion rates by oxidation of carbon monoxide and hydrocarbons and reduction of NO (both stoichiometric conditions), FIG. 5 shows conversion rates of NO by reduction of hydrocarbons or carbon monoxide, and FIG. Similarly, the conversion rate due to the oxidation of carbon (soot).
【００１９】得られた生成物は、図２に示すように、メ
タンの酸化に対して優れた触媒特性を示した。図３およ
び図４に示すように、酸化雰囲気条件と化学量論条件の
両方の条件下において、炭化水素およびＣＯの酸化反応
に対して優れた触媒特性を示した。また、この物質は、
図５に示すように、ＮＯの還元反応、および、炭化水素
および一酸化炭素によるＮＯの還元反応に対して優れた
触媒特性を示した。更に、図６に示すように、ＮＯの共
存の有無にかかわらず、ディーゼルエンジン排出炭素
（すす）の酸化に対して優れた触媒特性を示した。The resulting product exhibited excellent catalytic properties for the oxidation of methane, as shown in FIG. As shown in FIG. 3 and FIG. 4, under both conditions of the oxidizing atmosphere and the stoichiometric condition, excellent catalyst characteristics were exhibited for the oxidation reaction of hydrocarbon and CO. Also, this substance
As shown in FIG. 5, excellent catalytic properties were shown for the NO reduction reaction and the NO reduction reaction by hydrocarbons and carbon monoxide. Furthermore, as shown in FIG. 6, regardless of the presence or absence of NO, excellent catalytic characteristics were exhibited against the oxidation of carbon (soot) emitted from diesel engines.
【００２０】実施例２
実施例１と同じ混合溶液を６０℃の加熱によって蒸発乾
固して、得られた固体を窒素雰囲気中、５００℃、３時
間の条件で予備加熱した。得られた固体を９０％以上が
６μ以下の大きさになるまで粉砕し、９５０〜１０００
℃、１２時間の条件で再加熱して結晶化した。この方法
によって、実施例１と同じく、比表面積が大きく、優れ
た触媒特性を持つ生成物を得た。Example 2 The same mixed solution as in Example 1 was evaporated to dryness by heating at 60 ° C., and the obtained solid was preheated in a nitrogen atmosphere at 500 ° C. for 3 hours. The obtained solid is crushed until 90% or more reaches a size of 6 μ or less, and 950 to 1000
Crystallization was carried out by reheating under conditions of 12 ° C. and 12 hours. By this method, as in Example 1, a product having a large specific surface area and excellent catalytic properties was obtained.
【００２１】実施例３
実施例１と同じ沈殿体を作成し、２５％以上が固形分に
なるように水を加えて２５０ｍｌのスラリーを作製し
た。チャンネル密度２００ｃｐｓｉのコーディエライト
製ハニカム（約２５重量％のランタン酸化物を事前に被
覆したもので５５ｇの重量）をスラリーに浸した後、チ
ャンネル内の過剰なスラリーを圧縮空気で除去した。Example 3 The same precipitate as in Example 1 was prepared, and water was added so that 25% or more of the solid content was obtained to prepare 250 ml of a slurry. After immersing the cordierite honeycomb with a channel density of 200 cpsi (pre-coated with about 25 wt% lanthanum oxide to a weight of 55 g) into the slurry, excess slurry in the channels was removed with compressed air.
【００２２】得られた生成物を大気中７０℃で２時間加
熱して乾燥した。スラリーへの浸漬・乾燥操作を５ない
し１０回繰り返すことによって、ハニカムに対して２５
重量％の乾燥沈殿体の装填量を得た。次に、大気中、９
５０〜１０００℃、１２時間の条件で加熱して結晶化し
た。この方法によって、担体上に均一に分散、固着し、
２．４ｍ2／ｇの比表面積を持つＬａ3.5Ｒｕ4Ｏ13を得
た。The product obtained was heated at 70 ° C. in the atmosphere for 2 hours and dried. By repeating the dipping / drying operation in the slurry 5 to 10 times, 25
A dry precipitate loading of wt% was obtained. Next, in the atmosphere, 9
Crystallization was performed by heating at 50 to 1000 ° C. for 12 hours. By this method, uniformly dispersed and fixed on the carrier,
La 3.5 Ru 4 O 13 having a specific surface area of 2.4 m 2 / g was obtained.
【００２３】実施例４
実施例１と同じスラリーに５０ｇのアルミナ粉末担体
（アルミナ粉末の約２５重量％のランタン酸化物を事前
に被覆したもの）を浸漬し、大気中７０℃、ないしは真
空乾燥した。浸漬・乾燥操作を５〜１０回繰り返すこと
によって、アルミナ担体に対して２５重量％の乾燥沈殿
体の装填量を得た。Example 4 50 g of an alumina powder carrier (previously coated with about 25% by weight of alumina powder of lanthanum oxide) was immersed in the same slurry as in Example 1 and dried in air at 70 ° C. or vacuum drying. . By repeating the dipping / drying operation 5 to 10 times, a loading of the dry precipitate of 25% by weight with respect to the alumina carrier was obtained.
【００２４】得られた生成物を次に、大気中、９５０〜
１０００℃、１２時間の条件で加熱して結晶化した。こ
の方法によって、担体上に均一に分散、固着し、６１ｍ
2／ｇの比表面積を持つＬａ3.5Ｒｕ4Ｏ13を得た。The product obtained is then placed in the atmosphere at 950-
Crystallization was performed by heating at 1000 ° C. for 12 hours. By this method, it is uniformly dispersed and fixed on the carrier,
La 3.5 Ru 4 O 13 having a specific surface area of 2 / g was obtained.
【００２５】実施例５
実施例１と同じ混合溶液を５００ｍｌの純水で希釈し
た。この溶液を２００ｇのアルミナ粉末担体（アルミナ
粉末の約２５重量％のランタン酸化物を事前に被覆した
もの）に染み込ませ、大気中７０℃、ないしは真空乾燥
した。染み込み・乾燥操作を１０回繰り返した。この操
作によって、乾燥沈殿体のアルミナ粉末担体への被覆量
が混合溶液前駆体の１５重量％になった。Example 5 The same mixed solution as in Example 1 was diluted with 500 ml of pure water. This solution was impregnated with 200 g of an alumina powder carrier (previously coated with about 25% by weight of alumina powder of lanthanum oxide) and dried in air at 70 ° C. or vacuum. The impregnation / drying operation was repeated 10 times. By this operation, the coating amount of the dried precipitate on the alumina powder carrier became 15% by weight of the mixed solution precursor.
【００２６】得られた生成物を窒素雰囲気中、５００
℃、４時間の条件で予備加熱した。さらに、９５０〜１
０００℃、１２時間の条件で再加熱して結晶化した。こ
の方法によって、担体上に緻密に分散、固着し、６４ｍ
2／ｇの比表面積を持つＬａ3.5Ｒｕ4Ｏ13を得た。The product obtained was treated in a nitrogen atmosphere at 500
Preheating was performed under the conditions of 4 ° C. and 4 hours. Furthermore, 950-1
Crystallization was performed by reheating under conditions of 000 ° C and 12 hours. By this method, 64 m
La 3.5 Ru 4 O 13 having a specific surface area of 2 / g was obtained.
【００２７】実施例６
実施例５におけるアルミナ粉末担体の代わりに、アルミ
ナで洗滌被覆（ｗａｓｈ ｃｏａｔ）した体積４００ｃ
ｃ、チャンネル密度４００ｃｐｓｉのコーデライトハニ
カム（アルミナ被覆量は２０重量％で、その上にセリア
またはランタン酸化物を２０重量％ほど被覆したもの）
を用いて、実施例５と同じ操作をした。この方法によっ
て、担体上に緻密に分散、固着し、１３ｍ2／ｇの比表
面積を持つＬａ3.5Ｒｕ4Ｏ13を得た。Example 6 Instead of the alumina powder carrier used in Example 5, a wash-coated volume of 400 c with alumina was used.
c, corderite honeycomb with a channel density of 400 cpsi (alumina coating amount is 20% by weight, and ceria or lanthanum oxide is coated on it by about 20% by weight)
Was performed in the same manner as in Example 5. By this method, La 3.5 Ru 4 O 13 having a specific surface area of 13 m 2 / g was densely dispersed and fixed on the carrier to obtain La 3.5 Ru 4 O 13 .
【００２８】実施例７
０．４４２６ｇのＬａを含む３塩化ランタン溶液１００
ｍｌと０．３６８１ｇのＲｕを含む３塩化ルテニウム溶
液１００ｍｌを混合した。２５重量％のランタン酸化物
で被覆した１０ｇのアルミナ粉末を混合溶液に分散させ
た後、１５ｇの尿素を加え、９０℃まで徐々に加熱し、
毎分５０回転で、３時間撹拌した。ＬａとＲｕの水和物
が徐々にアルミナ上に沈積した。溶液を除去した後、脱
イオン水で洗浄し、１５０℃で３時間乾燥した。次に、
大気中、９６０〜１０００℃で１０時間加熱して結晶化
た。この方法によって、担体上に緻密に分散、固着し、
６５ｍ2／ｇの比表面積を持つＬａ3.5Ｒｕ4Ｏ13を得
た。この際、ＸＲＤからは不純物の生成も若干認められ
た。なお、アルミナの代わりに、ランタン酸化物を被覆
したコーディエライトおよびアルミナを洗浄被覆したコ
ーディエライトを用いても同様な結果が得られた。Example 7 100% lanthanum trichloride solution containing 0.4426 g of La
ml and 100 ml of a ruthenium trichloride solution containing 0.3681 g of Ru were mixed. After dispersing 10 g of alumina powder coated with 25% by weight of lanthanum oxide in the mixed solution, 15 g of urea was added and gradually heated to 90 ° C.,
The mixture was stirred at 50 rpm for 3 hours. The La and Ru hydrate gradually deposited on the alumina. After removing the solution, it was washed with deionized water and dried at 150 ° C. for 3 hours. next,
Crystallization was performed by heating in air at 960 to 1000 ° C. for 10 hours. By this method, it is finely dispersed and fixed on the carrier,
La 3.5 Ru 4 O 13 having a specific surface area of 65 m 2 / g was obtained. At this time, some generation of impurities was observed from XRD. Similar results were obtained when cordierite coated with lanthanum oxide and cordierite washed with alumina were used instead of alumina.
【００２９】[0029]
【発明の効果】本発明によれば、環境汚染物質として対
策が急がれているＮＯｘ、一酸化炭素、または炭化水素
の比較的低温での高効率除去、ディーゼル排出炭素（す
す）とＮＯｘの同時除去および蒸発性有機物の高効率酸
化除去が可能な触媒、低公害エネルギー製造につながる
メタンの燃焼触媒を提供することが出来る。また、本発
明のルテニウム酸塩は厚膜レジスターやプリント回路技
術に利用することが出来る。According to the present invention, high-efficiency removal of NOx, carbon monoxide, or hydrocarbons at relatively low temperatures, diesel exhaust carbon (soot), and NOx, which are urgently required as countermeasures as environmental pollutants, are achieved. It is possible to provide a catalyst capable of simultaneous removal and highly efficient oxidative removal of evaporative organic matter, and a methane combustion catalyst leading to low-pollution energy production. Further, the ruthenate of the present invention can be used in thick film resistors and printed circuit technology.
【図１】図１は、実施例１で合成したＬａ3.5Ｒｕ4Ｏ13
の粉末Ｘ線回折データのグラフである。FIG. 1 is a schematic diagram of La 3.5 Ru 4 O 13 synthesized in Example 1.
2 is a graph of powder X-ray diffraction data of
【図２】図２は、実施例１で合成したＬａ3.5Ｒｕ4Ｏ13
による、メタンの酸化による転化率を示すグラフであ
る。FIG. 2 shows La 3.5 Ru 4 O 13 synthesized in Example 1.
2 is a graph showing the conversion rate of methane due to oxidation.
【図３】図３は、実施例１で合成したＬａ3.5Ｒｕ4Ｏ13
による、すすの酸化（ＮＯ共存無し及び共存）による転
化率を示すグラフである。FIG. 3 shows La 3.5 Ru 4 O 13 synthesized in Example 1.
5 is a graph showing the conversion rate of soot due to oxidation (without and with NO).
【図４】図４は、実施例１で合成したＬａ3.5Ｒｕ4Ｏ13
による、酸化条件下での一酸化炭素の酸化および炭化水
素の酸化による転化率を示すグラフである。FIG. 4 is a graph showing La 3.5 Ru 4 O 13 synthesized in Example 1.
2 is a graph showing the conversion rate by oxidation of carbon monoxide and oxidation of hydrocarbons under oxidizing conditions according to FIG.
【図５】図５は、実施例１で合成したＬａ3.5Ｒｕ4Ｏ13
による、化学量論条件下での一酸化炭素―炭化水素―Ｎ
Ｏの酸化還元による転化率を示すグラフである。FIG. 5 shows La 3.5 Ru 4 O 13 synthesized in Example 1.
, Carbon monoxide-hydrocarbons-N under stoichiometric conditions
It is a graph which shows the conversion rate by redox of O.
【図６】図６は、実施例１で合成したＬａ3.5Ｒｕ4Ｏ13
による、化学量論条件下での一酸化炭素−ＮＯ、および
炭化水素−ＮＯの酸化還元による転化率を示すグラフで
ある。FIG. 6 shows La 3.5 Ru 4 O 13 synthesized in Example 1.
3 is a graph showing conversion rates of carbon monoxide-NO and hydrocarbon-NO by redox under stoichiometric conditions according to FIG.
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 4D048 AA06 AA13 AA14 AA18 AB01 AB05 BA03X BA10X BA15Y BA18X BA32X BA41X BA42X BB01 BB02 4G048 AA03 AB02 AB06 AC08 AD08 AE05 4G069 AA03 AA08 BA01A BA01B BA13B BB06A BB06B BC08A BC38A BC42A BC42B BC43A BC43B BC70A BC70B CA02 CA03 CA07 CA08 CA13 CA14 CA15 CA18 CD01 EA19 EC02Y EC23 FA01 FB05 FB09 FB30 FB33 ─────────────────────────────────────────────────── ─── Continued front page F term (reference) 4D048 AA06 AA13 AA14 AA18 AB01 AB05 BA03X BA10X BA15Y BA18X BA32X BA41X BA42X BB01 BB02 4G048 AA03 AB02 AB06 AC08 AD08 AE05 4G069 AA03 AA08 BA01A BA01B BA13B BB06A BB06B BC08A BC38A BC42A BC42B BC43A BC43B BC70A BC70B CA02 CA03 CA07 CA08 CA13 CA14 CA15 CA18 CD01 EA19 EC02Y EC23 FA01 FB05 FB09 FB30 FB33
Claims (6)
１２配位ランタン、Ｒｕは、酸素６配位ルテニウム、Ｏ
は酸素）で示されるぺロブスカイト型のルテニウム酸ラ
ンタン結晶の製造方法であって、反応容器内でＬａの金
属イオンを含む水溶液とＲｕの金属イオンを含む水溶液
を沈殿形成液と反応させてＬａおよびＲｕの水酸化物を
作成し、この沈殿体を加熱して結晶化することを特徴と
するルテニウム酸塩の製造方法。1. A chemical formula of La 3.5 Ru 4 O 13 (La is oxygen 12-coordinated lanthanum, Ru is oxygen 6-coordinated ruthenium, O
Is a perovskite-type lanthanum ruthenate crystal represented by oxygen), wherein an aqueous solution containing a metal ion of La and an aqueous solution containing a metal ion of Ru are reacted with a precipitation forming liquid in a reaction vessel. A method for producing a ruthenate, comprising forming a hydroxide of Ru and heating the precipitate to crystallize it.
体に沈積、接着または塗布した後加熱して結晶化するこ
とによりＬａ3.5Ｒｕ4Ｏ13の被膜を担体上に形成するこ
とを特徴とする請求項１記載のルテニウム酸塩の製造方
法。2. A La 3.5 Ru 4 O 13 coating film is formed on a carrier by depositing, adhering or coating the above precipitate on a catalyst carrier or another carrier and then heating and crystallizing the same. The method for producing a ruthenate according to claim 1.
１２配位ランタン、Ｒｕは、酸素６配位ルテニウム、Ｏ
は酸素）で示されるぺロブスカイト型のルテニウム酸ラ
ンタン結晶の製造方法であって、反応容器内でＬａの金
属イオンを含む水溶液とＲｕの金属イオンを含む水溶液
を混合した混合水溶液を直接加熱し、蒸発乾固した後、
加熱して結晶化することを特徴とするルテニウム酸塩の
製造方法。3. The chemical formula La 3.5 Ru 4 O 13 (La is oxygen 12-coordinated lanthanum, Ru is oxygen 6-coordinated ruthenium, O
Is a perovskite type lanthanum ruthenate crystal represented by oxygen), wherein a mixed aqueous solution obtained by mixing an aqueous solution containing La metal ions and an aqueous solution containing Ru metal ions is directly heated in a reaction vessel, After evaporating to dryness,
A method for producing a ruthenate, comprising heating and crystallization.
の担体に含浸させ、加熱して結晶化することによりＬａ
3.5Ｒｕ4Ｏ13の被膜を担体上に形成することを特徴とす
る請求項３記載のルテニウム酸塩の製造方法。4. The La is prepared by impregnating the above-mentioned mixed aqueous solution into a catalyst carrier and other carriers and heating to crystallize it.
The method for producing ruthenate according to claim 3, wherein a film of 3.5 Ru 4 O 13 is formed on the carrier.
ルカリ土類酸化物あるいは希土類金属酸化物を被覆した
ものであることを特徴とする請求項２または４記載のル
テニウム酸塩の製造方法。5. The method for producing ruthenate according to claim 2 or 4, wherein the catalyst carrier or other carrier is coated with an alkaline earth oxide or a rare earth metal oxide.
た製造方法で得られたルテニウム酸塩からなり、メタン
の燃焼に対する触媒、ディーゼル排出粒状物質フィルタ
ーの再生に有効な炭素及びディーゼル排出粒状物質（す
す）の酸化に対する触媒、ディーゼル排出粒状物質のオ
ンライン酸化に対する触媒、ディーゼル車排出汚染物質
（ディーゼル排出粒状物質（すす）とＮＯｘ）の除去に
対する触媒、一酸化炭素（ＣＯ）の酸化反応に対する触
媒、有意な一酸化炭素の発生を伴わない炭化水素（Ｈ
Ｃ）の酸化反応に対する触媒、揮発性有機物質の酸化に
対する触媒、または一酸化炭素または炭化水素によるＮ
Ｏｘの還元反応に対する触媒として用いられることを特
徴とするルテニウム酸塩触媒。6. A catalyst for the combustion of methane, which comprises the ruthenate obtained by the production method according to any one of claims 1 to 5, carbon effective for regeneration of a diesel exhaust particulate matter filter, and diesel exhaust particulate matter. Catalyst for the oxidation of substances (soot), catalyst for on-line oxidation of diesel exhaust particulates, catalyst for the removal of diesel vehicle exhaust pollutants (diesel exhaust particulates (soot) and NOx), for the oxidation reaction of carbon monoxide (CO) Catalysts, hydrocarbons (H
C) a catalyst for the oxidation reaction, a catalyst for the oxidation of volatile organic substances, or N by carbon monoxide or hydrocarbons.
A ruthenate catalyst, which is used as a catalyst for a reduction reaction of Ox.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017124390A (en) * | 2016-01-13 | 2017-07-20 | コリア インスティテュート オブ エナジー リサーチＫｏｒｅａ Ｉｎｓｔｉｔｕｔｅ Ｏｆ Ｅｎｅｒｇｙ Ｒｅｓｅａｒｃｈ | Method for forming metal oxide coating layer on catalyst supporter surface and catalyst supporter and catalyst device containing metal oxide coating layer |
| CN107362791A (en) * | 2017-07-31 | 2017-11-21 | 福州大学 | A kind of methane catalytic combustion catalyst and preparation method thereof |
-
2002
- 2002-04-26 JP JP2002126911A patent/JP3882075B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2017124390A (en) * | 2016-01-13 | 2017-07-20 | コリア インスティテュート オブ エナジー リサーチＫｏｒｅａ Ｉｎｓｔｉｔｕｔｅ Ｏｆ Ｅｎｅｒｇｙ Ｒｅｓｅａｒｃｈ | Method for forming metal oxide coating layer on catalyst supporter surface and catalyst supporter and catalyst device containing metal oxide coating layer |
| CN107362791A (en) * | 2017-07-31 | 2017-11-21 | 福州大学 | A kind of methane catalytic combustion catalyst and preparation method thereof |
| CN107362791B (en) * | 2017-07-31 | 2019-07-09 | 福州大学 | A kind of methane catalytic combustion catalyst and preparation method thereof |
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