ZrxTixAl1-2xO2 mixed oxide:: Preparation and application in three-way catalysts

被引：0

作者：

Yu Yao ^{[1
]}

Gong Mao-Chu ^{[1
]}

Guo Jia-Xiu ^{[1
]}

Lin Tao ^{[1
]}

Yuan Shu-Hua ^{[1
]}

Chen Yao-Qiang ^{[1
]}

机构：

[1] Sichuan Univ, Coll Chem, Chengdu 610064, Peoples R China

来源：

CHINESE JOURNAL OF INORGANIC CHEMISTRY | 2007年 / 23卷 / 08期

关键词：

XRD; TPD; Zr0.25Ti0.25Al0.5 mixed oxides; Pt; three-way catalysts (TWCS);

D O I：

暂无

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Zr0.5TI0.5O2(ZT)) and Zr0.25Ti0.25Al0.5O2(ZTA) mixed oxides were prepared by eo-precipitation method and characterized by low temperature adsorption-desorption, XRD and NH3-TPD. The activity of Pt/Zr0.5Ti0.5O2 and Pt/ Zr0.5Ti0.5Al0.5O2 catalysts was evaluated using the simulated gases. The results show that ZTA samples exhibit higher specific surface area, larger pore volume and proper surface acidic amount and acidity in comparison with ZT. The results of the catalytic test indicate that Pt/ZT and Pt/ZTA catalysts exhibit excellent low-temperature catalytic activity and lower light-off temperatures of hydrocarbon, carbon monoxide and nitrogen oxides, especially better conversion for nitrogen oxides (NO,,). The addition of Al2O3 Into ZT enhanced the anti-aging property of Pt/ ZTA catalysts due to the excellent textural, structural, surface acidity and thermal stability.

引用

页码：1453 / 1456

页数：4

共 16 条

[1] Chen TY, 2002, CHIN J INORG CHEM, V18, P378
[2] Structure, microstructure, and mixed conduction of [(ZrO2)0.92(Y2O3)0.08]0.9(TiO2)0.1
Colomer, MT
Jurado, JR
[J]. JOURNAL OF SOLID STATE CHEMISTRY, 2002, 165 (01) : 79 - 88
[3] Effect of ZrO2 incorporation and calcination temperature on the photocatalytic activity of commercial TiO2 for salicylic acid and Cr(VI) photodegradation
Colón, G
Hidalgo, MC
Navío, JA
[J]. APPLIED CATALYSIS A-GENERAL, 2002, 231 (1-2) : 185 - 199
[4] [郭家秀 Guo Jiaxiu], 2006, [中国稀土学报, Journal of the Chinese Rare Earth Society], V24, P27
[5] Automotive catalytic converters: current status and some perspectives
Kaspar, J
Fornasiero, P
Hickey, N
[J]. CATALYSIS TODAY, 2003, 77 (04) : 419 - 449
[6] Analysis of acidic properties of zeolitic and non-zeolitic solid acid catalysts using temperature-programmed desorption of ammonia
Katada, N
Niwa, M
[J]. CATALYSIS SURVEYS FROM ASIA, 2004, 8 (03) : 161 - 170
[7] Water-gas shift reaction over sulfided molybdenum catalysts I. Alumina, titania and zirconia-supported catalysts
Laniecki, M
Malecka-Grycz, M
Domka, F
[J]. APPLIED CATALYSIS A-GENERAL, 2000, 196 (02) : 293 - 303
[8] NOx storage reduction catalyst for automotive exhaust with improved tolerance against sulfur poisoning
Matsumoto, S
Ikeda, Y
Suzuki, H
Ogai, M
Miyoshi, N
[J]. APPLIED CATALYSIS B-ENVIRONMENTAL, 2000, 25 (2-3) : 115 - 124
[9] Miao JY, 1999, SURF INTERFACE ANAL, V28, P123, DOI 10.1002/(SICI)1096-9918(199908)28:1<123::AID-SIA632>3.0.CO
[10] 2-6

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