JP6053811B2 - 排気ガス処理のための担持貴金属触媒 - Google Patents
排気ガス処理のための担持貴金属触媒 Download PDFInfo
- Publication number
- JP6053811B2 JP6053811B2 JP2014542298A JP2014542298A JP6053811B2 JP 6053811 B2 JP6053811 B2 JP 6053811B2 JP 2014542298 A JP2014542298 A JP 2014542298A JP 2014542298 A JP2014542298 A JP 2014542298A JP 6053811 B2 JP6053811 B2 JP 6053811B2
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- JP
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- Prior art keywords
- exhaust gas
- rare earth
- zirconia
- palladium
- earth metal
- 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.)
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- 239000003054 catalyst Substances 0.000 title claims description 66
- 229910000510 noble metal Inorganic materials 0.000 title claims description 29
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims description 113
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 91
- 239000007789 gas Substances 0.000 claims description 60
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 claims description 58
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 40
- 229910052763 palladium Inorganic materials 0.000 claims description 34
- 238000000034 method Methods 0.000 claims description 29
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- 150000002910 rare earth metals Chemical class 0.000 claims description 25
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 22
- 238000002485 combustion reaction Methods 0.000 claims description 22
- 230000003647 oxidation Effects 0.000 claims description 19
- 238000007254 oxidation reaction Methods 0.000 claims description 19
- 229910052697 platinum Inorganic materials 0.000 claims description 17
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- 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 2
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- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 description 2
- OGPBJKLSAFTDLK-UHFFFAOYSA-N europium atom Chemical compound [Eu] OGPBJKLSAFTDLK-UHFFFAOYSA-N 0.000 description 2
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- 238000002309 gasification Methods 0.000 description 2
- KJZYNXUDTRRSPN-UHFFFAOYSA-N holmium atom Chemical compound [Ho] KJZYNXUDTRRSPN-UHFFFAOYSA-N 0.000 description 2
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- 238000005470 impregnation Methods 0.000 description 2
- NNPPMTNAJDCUHE-UHFFFAOYSA-N isobutane Chemical compound CC(C)C NNPPMTNAJDCUHE-UHFFFAOYSA-N 0.000 description 2
- 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 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 229910052863 mullite Inorganic materials 0.000 description 2
- HBEQXAKJSGXAIQ-UHFFFAOYSA-N oxopalladium Chemical compound [Pd]=O HBEQXAKJSGXAIQ-UHFFFAOYSA-N 0.000 description 2
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- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 description 2
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 2
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- 229910018072 Al 2 O 3 Inorganic materials 0.000 description 1
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- 206010003497 Asphyxia Diseases 0.000 description 1
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Images
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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
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/864—Removing carbon monoxide or hydrocarbons
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- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01D53/34—Chemical or biological purification of waste gases
- B01D53/92—Chemical or biological purification of waste gases of engine exhaust gases
- B01D53/94—Chemical or biological purification of waste gases of engine exhaust gases by catalytic processes
- B01D53/944—Simultaneously removing carbon monoxide, hydrocarbons or carbon making use of oxidation catalysts
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01J37/02—Impregnation, coating or precipitation
- B01J37/024—Multiple impregnation or coating
- B01J37/0248—Coatings comprising impregnated particles
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- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G25/00—Compounds of zirconium
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- C01—INORGANIC CHEMISTRY
- C01G—COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSES C01D OR C01F
- C01G25/00—Compounds of zirconium
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- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
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- C01P—INDEXING SCHEME RELATING TO STRUCTURAL AND PHYSICAL ASPECTS OF SOLID INORGANIC COMPOUNDS
- C01P2006/00—Physical properties of inorganic compounds
- C01P2006/12—Surface area
Description
アルミナ及びジルコニアの市販の試料を得た(それぞれ、A1及びZ1)。市販の希土類金属安定化ジルコニアの試料も得た(Z2〜Z5)。これらの材料の組成を表1に示す。これらの試料の各々のBET表面積を測定し、表1に記録する。次いで、試料を空気中900℃の焼成プロセスに4時間供し、BET表面積を再度測定した。これらの結果も表1に記録する。データは、アルミナ及び希土類金属安定化ジルコニアが、焼成後にその表面積の有意な部分を保持していることを示している。このデータを図1にも示す。
上記A1及びZ1〜Z5と同じ組成を有する試料に、従来の担持技術を使用してパラジウムを担持させた。
上記A1及びZ5と同じ組成を有する試料に、従来の担持技術を使用して約5:1の比でパラジウム及び白金を担持させた。試料をハニカムモノリスコアにコーティングして約20g/ft3の白金及び100g/ft3のパラジウムの担持量を達成した。次いで、これらの試料を、SCATリグを使用して模擬希薄燃焼排気ガスに供して、C1〜C3飽和炭化水素の変換について試験した。
Claims (20)
- a.過剰の酸素と少なくとも1種の飽和炭化水素を含む排気ガスを酸化触媒に接触させることと、
b.飽和炭化水素の少なくとも一部分を酸化してCO2とH2Oを生成させること
を含み、酸化触媒が、ジルコニアと安定化量の少なくとも1種の希土類金属を含む担体上に、少なくとも1種の貴金属を含む、排気ガスを処理する方法であって、
前記排気ガスが希薄燃焼の燃焼プロセスに由来し、前記ジルコニアが最大20重量%のシリカで安定化される、方法。 - 前記飽和炭化水素が主にメタンである、請求項1に記載の方法。
- 前記貴金属がパラジウム及び白金の少なくとも1つを含む、請求項1に記載の方法。
- 前記貴金属がパラジウム及び白金からなる、請求項1に記載の方法。
- 前記希土類金属が1種又は複数種の希土類金属酸化物の形態である、請求項1に記載の方法。
- 前記1種又は複数種の希土類金属酸化物及び前記ジルコニアが固溶体中に共に存在する、請求項5に記載の方法。
- 前記貴金属が前記固溶体に含浸されている、請求項6に記載の方法。
- 前記希土類金属がランタン、ネオジム、イットリウム及びこれらの組み合わせからなる群から選択される、請求項1に記載の方法。
- 前記希土類金属がイットリウムである、請求項1に記載の方法。
- 前記担体が1〜40重量%の前記希土類金属を含む、請求項1に記載の方法。
- 前記担体が5〜20重量%の前記希土類金属を含む、請求項1に記載の方法。
- 前記担体が5〜15重量%の酸化イットリウム、5〜15重量%のシリカ、及び残りのジルコニアからなる、請求項1に記載の方法。
- 前記貴金属がパラジウム又はパラジウムと白金の組み合わせからなる、請求項12に記載の方法。
- 前記排気ガスがメタンを含む燃料の燃焼に由来する、請求項1に記載の方法。
- 前記排気ガスがメタンを含む燃料の燃焼に由来する、請求項13に記載の方法。
- 前記接触が350〜650℃の温度で起こる、請求項1に記載の方法。
- a.過剰の酸素と10ppmv(体積百万分率)〜10000ppmvの濃度のメタンを含み、350〜650℃の温度を有する排気ガスと、
b.前記排気ガスと接触した酸化触媒と
を含み、前記触媒が、ジルコニア及び安定化量の少なくとも1種の希土類金属を含む担体上に、少なくとも1種の貴金属を含む、排気ガスを処理するためのシステムであって、
前記排気ガスが希薄燃焼の燃焼プロセスに由来し、前記ジルコニアが最大20重量%のシリカで安定化される、システム。 - 前記担体が5〜15重量%の酸化イットリウム、5〜15重量%のシリカ、及び残りのジルコニアからなり、前記貴金属がパラジウム又はパラジウムと白金の組み合わせからなる、請求項17に記載のシステム。
- 前記触媒が基材上に担持されて100〜200g/ft3の貴金属担持量をもたらす、請求項18に記載のシステム。
- 前記排気ガスがメタンを燃焼することに由来する、請求項17に記載のシステム。
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US201161561095P | 2011-11-17 | 2011-11-17 | |
US61/561,095 | 2011-11-17 | ||
PCT/US2012/037752 WO2013074147A1 (en) | 2011-11-17 | 2012-05-14 | Supported noble metal catalyst for treating exhaust gas |
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RU (1) | RU2631814C2 (ja) |
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FR3026024B1 (fr) * | 2014-09-24 | 2018-06-15 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | Module catalytique presentant une efficacite amelioree au vieillissement |
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EP3353265A4 (en) * | 2015-09-22 | 2019-06-05 | BASF Corporation | SWEEP TOLERANT CATALYST SYSTEM |
CN107297206A (zh) * | 2016-04-14 | 2017-10-27 | 巴斯夫公司 | 用于稀燃压缩天然气发动机的氧化催化剂 |
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CN108579719A (zh) * | 2017-12-28 | 2018-09-28 | 中国科学院宁波城市环境观测研究站 | 纳米级铈锆固溶体复合氧化物、制备方法、采用其的催化剂及用途 |
DE102018128152A1 (de) * | 2018-11-12 | 2020-05-14 | Man Energy Solutions Se | Verfahren zur Nachbehandlung des Abgases einer Brennkraftmaschine und Brennkraftmaschine |
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DK2780102T3 (en) | 2018-03-05 |
PL2780102T5 (pl) | 2020-12-14 |
CN103945920A (zh) | 2014-07-23 |
WO2013074147A1 (en) | 2013-05-23 |
DK2780102T4 (da) | 2020-09-07 |
TR201802140T4 (tr) | 2018-03-21 |
IN2014CN04337A (ja) | 2015-09-04 |
RU2014124334A (ru) | 2015-12-27 |
RU2631814C2 (ru) | 2017-09-26 |
BR112014011528A2 (pt) | 2017-05-16 |
PL2780102T3 (pl) | 2018-05-30 |
JP2015502845A (ja) | 2015-01-29 |
KR102099165B1 (ko) | 2020-04-09 |
NO2780102T3 (ja) | 2018-05-05 |
CN103945920B (zh) | 2017-10-31 |
KR20140110863A (ko) | 2014-09-17 |
EP2780102B2 (en) | 2020-08-05 |
US20140322119A1 (en) | 2014-10-30 |
EP2780102B1 (en) | 2017-12-06 |
EP2780102A1 (en) | 2014-09-24 |
HK1199419A1 (en) | 2015-07-03 |
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