JP5756427B2 - 比表面積調整材 - Google Patents
比表面積調整材 Download PDFInfo
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- JP5756427B2 JP5756427B2 JP2012107958A JP2012107958A JP5756427B2 JP 5756427 B2 JP5756427 B2 JP 5756427B2 JP 2012107958 A JP2012107958 A JP 2012107958A JP 2012107958 A JP2012107958 A JP 2012107958A JP 5756427 B2 JP5756427 B2 JP 5756427B2
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- 239000000463 material Substances 0.000 title claims description 97
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 184
- 239000000843 powder Substances 0.000 claims description 59
- 239000002245 particle Substances 0.000 claims description 35
- 238000002156 mixing Methods 0.000 claims description 34
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 29
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 29
- 239000003054 catalyst Substances 0.000 claims description 29
- 238000010438 heat treatment Methods 0.000 claims description 25
- 239000011259 mixed solution Substances 0.000 claims description 24
- 238000004519 manufacturing process Methods 0.000 claims description 23
- 239000007787 solid Substances 0.000 claims description 23
- HSJPMRKMPBAUAU-UHFFFAOYSA-N cerium(3+);trinitrate Chemical compound [Ce+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O HSJPMRKMPBAUAU-UHFFFAOYSA-N 0.000 claims description 20
- 238000001914 filtration Methods 0.000 claims description 19
- 238000005406 washing Methods 0.000 claims description 16
- 238000010304 firing Methods 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 15
- 239000013543 active substance Substances 0.000 claims description 11
- 239000003638 chemical reducing agent Substances 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 10
- 238000000746 purification Methods 0.000 claims description 9
- 239000000243 solution Substances 0.000 claims description 9
- 238000000034 method Methods 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 2
- CETPSERCERDGAM-UHFFFAOYSA-N ceric oxide Chemical compound O=[Ce]=O CETPSERCERDGAM-UHFFFAOYSA-N 0.000 description 64
- 229910000422 cerium(IV) oxide Inorganic materials 0.000 description 64
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 28
- 239000007789 gas Substances 0.000 description 17
- 229910052697 platinum Inorganic materials 0.000 description 14
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 8
- 239000001301 oxygen Substances 0.000 description 8
- 229910052760 oxygen Inorganic materials 0.000 description 8
- 230000003197 catalytic effect Effects 0.000 description 7
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 4
- QGZKDVFQNNGYKY-UHFFFAOYSA-N ammonia Natural products N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 238000002485 combustion reaction Methods 0.000 description 4
- 238000001879 gelation Methods 0.000 description 4
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000004215 Carbon black (E152) Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000009849 deactivation Effects 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000002296 dynamic light scattering Methods 0.000 description 2
- 229930195733 hydrocarbon Natural products 0.000 description 2
- 150000002430 hydrocarbons Chemical class 0.000 description 2
- 229910052763 palladium Inorganic materials 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 238000004438 BET method Methods 0.000 description 1
- 229910002651 NO3 Inorganic materials 0.000 description 1
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000003426 co-catalyst Substances 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000004299 exfoliation Methods 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 229910052809 inorganic oxide Inorganic materials 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- CMOAHYOGLLEOGO-UHFFFAOYSA-N oxozirconium;dihydrochloride Chemical compound Cl.Cl.[Zr]=O CMOAHYOGLLEOGO-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
- 239000011148 porous material Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 229910052703 rhodium Inorganic materials 0.000 description 1
- 239000010948 rhodium Substances 0.000 description 1
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 description 1
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910001928 zirconium oxide Inorganic materials 0.000 description 1
Images
Classifications
-
- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Exhaust Gas After Treatment (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Inorganic Compounds Of Heavy Metals (AREA)
- Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)
- Catalysts (AREA)
Description
12a:表面
14:白金(触媒活性物質)
16:セリアジルコニア酸化物(Ce1−XZrXO2材料)
16a:Ce0.2Zr0.8O2粉末(Ce1−XZrXO2材料)
18:比表面積調整材
18a:ジルコニアゾル
18b:硝酸セリウム溶液
20:アンモニア水(還元剤)
P1:第1混合工程
P2:第2混合工程
P3:ろ過・洗浄工程
P4:加温工程
P5:焼成工程
Claims (3)
- 粉末状或いは多孔質状のCe1−XZrXO2材料(0<X<1)の比表面積を調整するために該粉末状或いは多孔質状のCe1−XZrXO2材料に添加する比表面積調整材であって、
前記比表面積調整材は、平均粒径が1〜10nmのジルコニア粒子が含まれたジルコニアゾルと硝酸セリウム溶液とからなり、
前記粉末状或いは多孔質状のCe 1−X Zr X O 2 材料に前記比表面積調整材を0.5〜5(wt%)の範囲内で添加して混合し、
その混合された前記粉末状或いは多孔質状のCe 1−X Zr X O 2 材料と前記比表面積調整材との混合液に、濃度が0.2〜1(N)の範囲内の還元剤であるアンモニア水を1〜5(wt%)の範囲内で添加して混合し、
その混合された混合液をろ過して得た固体分を洗浄することによりその混合液中の固体分を分離し、
その混合液中から分離した固体分を100〜200℃の範囲内で加温することによりゲル化して、
そのゲル化したものを焼成することによって前記粉末状或いは多孔質状のCe 1−X Zr X O 2 材料の比表面積を調整するものであることを特徴とする比表面積調整材。 - 請求項1の比表面積調整材により比表面積が調整された粉末状或いは多孔質状のCe1−XZrXO2材料の製造方法であって、
粉末状或いは多孔質状のCe1−XZrXO2材料に前記比表面積調整材を0.5〜5(wt%)の範囲内で加えて混合する第1混合工程と、
前記第1混合工程によって混合された前記粉末状或いは多孔質状のCe1−XZrXO2材料と前記比表面積調整材との混合液に濃度が0.2〜1(N)の範囲内の還元剤であるアンモニア水を1〜5(wt%)の範囲内で加えて混合する第2混合工程と、
前記第2混合工程によって混合された混合液を、ろ過・洗浄してその混合液中の固体分を分離するろ過・洗浄工程と、
前記ろ過・洗浄工程によって混合液中から分離された固体分を100〜200℃の範囲内で加温することでゲル化する加温工程と、
前記加温工程でゲル化されたものを焼成する焼成工程と
を、含むことを特徴とする請求項1の比表面積調整材により比表面積が調整された粉末状或いは多孔質状のCe1−XZrXO2材料の製造方法。 - 請求項1の比表面積調整材により比表面積が調整された粉末状或いは多孔質状のCe1−XZrXO2材料を、触媒担体の表面に触媒活性物質と共に担持させたことを特徴とする自動車排ガス浄化用触媒装置。
Priority Applications (1)
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JP2012107958A JP5756427B2 (ja) | 2012-05-09 | 2012-05-09 | 比表面積調整材 |
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JP2012107958A JP5756427B2 (ja) | 2012-05-09 | 2012-05-09 | 比表面積調整材 |
Publications (2)
Publication Number | Publication Date |
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JP2013234094A JP2013234094A (ja) | 2013-11-21 |
JP5756427B2 true JP5756427B2 (ja) | 2015-07-29 |
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JP2012107958A Expired - Fee Related JP5756427B2 (ja) | 2012-05-09 | 2012-05-09 | 比表面積調整材 |
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Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6295020B2 (ja) * | 2012-08-07 | 2018-03-14 | 一般財団法人ファインセラミックスセンター | セリア−ジルコニア系材料及びその製造方法 |
CN106058241B (zh) * | 2016-07-21 | 2018-06-19 | 天津巴莫科技股份有限公司 | Ce1-xZrxO2纳米固溶体均质修饰锂离子电池正极材料及其制备方法 |
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2012
- 2012-05-09 JP JP2012107958A patent/JP5756427B2/ja not_active Expired - Fee Related
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JP2013234094A (ja) | 2013-11-21 |
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