Low-temperature CH4 Catalytic Combustion over Pd Catalyst Supported on Co3O4 Nanocrystals with Well-Defined Crystal Planes

被引：60

作者：

Hu, Linhua ^{[1
]}

Peng, Qing ^{[1
]}

Li, Yadong ^{[1
]}

机构：

[1] Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China

来源：

CHEMCATCHEM | 2011年 / 3卷 / 05期

关键词：

cobalt; nanostructures; catalytic combustion; supported catalysts; surface chemistry; METHANE COMBUSTION; PLATINUM NANOCRYSTALS; MESOPOROUS CO3O4; METAL-OXIDES; OXIDATION; FACETS; SHAPE; CERIA; PD/CO3O4; SO2;

D O I：

10.1002/cctc.201000407

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report a novel strategy to prepare supported Pd catalysts for low-temperature methane combustion. The structure-property relationship of the catalysts was investigated by tuning the shape and crystal planes of supporting Co3O4 nanocrystals. Pd/Co3O4 nanosheets are more reactive than Pd/Co3O4 nanobelts and nanocubes with the same Pd loading. The strong surface interaction between the Co3O4 unit cell and the PdO unit cell on {112} crystal plane of Pd/Co3O4 nanosheets has been analyzed by using high resolution transmission electron microscopy and temperature programmed reduction experiments.

引用

页码：868 / 874

页数：7

共 47 条

[1]

[Anonymous], 2006, ANGEW CHEM, DOI DOI 10.1002/ANGE.200603068

[2]

Beyer H. K., 2002, ANGEW CHEM, VI, P203

[3] Chemistry and properties of nanocrystals of different shapes [J].

Burda, C ;

Chen, XB ;

Narayanan, R ;

El-Sayed, MA .

CHEMICAL REVIEWS, 2005, 105 (04) :1025-1102

[4] Constructing Hierarchical Spheres from Large Ultrathin Anatase TiO2 Nanosheets with Nearly 100% Exposed (001) Facets for Fast Reversible Lithium Storage [J].

Chen, Jun Song ;

Tan, Yi Ling ;

Li, Chang Ming ;

Cheah, Yan Ling ;

Luan, Deyan ;

Madhavi, Srinivasan ;

Boey, Freddy Yin Chiang ;

Archer, Lynden A. ;

Lou, Xiong Wen .

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, 2010, 132 (17) :6124-6130

[5]

CHORKENDORFF I, 2003, CONCEPTS MODERN CATA, P172

[6] Catalysts for combustion of methane and lower alkanes [J].

Choudhary, TV ;

Banerjee, S ;

Choudhary, VR .

APPLIED CATALYSIS A-GENERAL, 2002, 234 (1-2) :1-23

[7] Catalytic combustion of methane over palladium-based catalysts [J].

Ciuparu, D ;

Lyubovsky, MR ;

Altman, E ;

Pfefferle, LD ;

Datye, A .

CATALYSIS REVIEWS-SCIENCE AND ENGINEERING, 2002, 44 (04) :593-649

[8] Nanofaceted Pd-O Sites in Pd-Ce Surface Superstructures: Enhanced Activity in Catalytic Combustion of Methane [J].

Colussi, Sara ;

Gayen, Arup ;

Camellone, Matteo Farnesi ;

Boaro, Marta ;

Llorca, Jordi ;

Fabris, Stefano ;

Trovarelli, Alessandro .

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION, 2009, 48 (45) :8481-8484

[9] Low temperature oxidation of methane over Pd-based catalysts - effect of support oxide on the combustion activity [J].

Eguchi, K ;

Arai, H .

APPLIED CATALYSIS A-GENERAL, 2001, 222 (1-2) :359-367

[10] Active nonmetallic Au and Pt species on ceria-based water-gas shift catalysts [J].

Fu, Q ;

Saltsburg, H ;

Flytzani-Stephanopoulos, M .

SCIENCE, 2003, 301 (5635) :935-938

← 1 2 3 4 5 →