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作者:

Ji, Kemeng (Ji, Kemeng.) | Dai, Hongxing (Dai, Hongxing.) (学者:戴洪兴) | Deng, Jiguang (Deng, Jiguang.) | Li, Xinwei (Li, Xinwei.) | Wang, Yuan (Wang, Yuan.) | Gao, Baozu (Gao, Baozu.) | Bai, Guangmei (Bai, Guangmei.) | Au, Chak Tong (Au, Chak Tong.)

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EI Scopus SCIE

摘要:

Three-dimensionally ordered macroporous (3DOM) and bulk Co3O4, Eu0.6Sr0.4FeO3 (ESFO), and 3 wt% Co3O4/Eu0.6Sr0.4FeO3 (3Co(3)O(4)/ESFO) were fabricated using the PMMA-templating (3DOM-Co3O4 and 3DOM-ESFO), citric acid-assisted hydrothermal (Co3O4-bulk and ESFO-bulk), and incipient wetness impregnation (3Co(3)O(4)/3DOM-ESFO and 3Co(3)O(4)/ESFO-bulk) methods, respectively. Physicochemical properties of these materials were characterized by means of various techniques, and their catalytic activities were evaluated for toluene combustion. Compared to the nonporous Co3O4 and ESFO samples, the 3DOM-Co3O4, 3 DOM-ESFO, and 3Co(3)O(4)/3DOM-ESFO samples exhibited higher oxygen adspecies concentrations and better low-temperature reducibility. The 3Co(3)O(4)/3DOM-ESFO sample showed the best catalytic activity for toluene combustion, giving the T-50% and T-90% of 251 and 269 degrees C at 20,000 mL/(g h), respectively. The apparent activation energies of these samples were in the range of 72-88 kJ/mol. We believe that the higher oxygen adspecies concentration, better low-temperature reducibility, and synergistic action between Co3O4 and 3DOM-structured ESFO were responsible for the excellent catalytic performance of 3Co(3)O(4)/3DOM-ESFO. (c) 2012 Elsevier B.V. All rights reserved.

关键词:

Supported cobalt oxide catalyst Synergistic action Three-dimensionally ordered macroporous perovskite-type oxide Toluene combustion

作者机构:

  • [ 1 ] [Ji, Kemeng]Beijing Univ Technol, Lab Catalysis Chem & Nanosci, Dept Chem & Chem Engn, Coll Environm & Energy Engn, Beijing 100124, Peoples R China
  • [ 2 ] [Dai, Hongxing]Beijing Univ Technol, Lab Catalysis Chem & Nanosci, Dept Chem & Chem Engn, Coll Environm & Energy Engn, Beijing 100124, Peoples R China
  • [ 3 ] [Deng, Jiguang]Beijing Univ Technol, Lab Catalysis Chem & Nanosci, Dept Chem & Chem Engn, Coll Environm & Energy Engn, Beijing 100124, Peoples R China
  • [ 4 ] [Li, Xinwei]Beijing Univ Technol, Lab Catalysis Chem & Nanosci, Dept Chem & Chem Engn, Coll Environm & Energy Engn, Beijing 100124, Peoples R China
  • [ 5 ] [Wang, Yuan]Beijing Univ Technol, Lab Catalysis Chem & Nanosci, Dept Chem & Chem Engn, Coll Environm & Energy Engn, Beijing 100124, Peoples R China
  • [ 6 ] [Gao, Baozu]Beijing Univ Technol, Lab Catalysis Chem & Nanosci, Dept Chem & Chem Engn, Coll Environm & Energy Engn, Beijing 100124, Peoples R China
  • [ 7 ] [Bai, Guangmei]Beijing Univ Technol, Lab Catalysis Chem & Nanosci, Dept Chem & Chem Engn, Coll Environm & Energy Engn, Beijing 100124, Peoples R China
  • [ 8 ] [Au, Chak Tong]Hong Kong Baptist Univ, Dept Chem, Kowloon, Hong Kong, Peoples R China
  • [ 9 ] [Au, Chak Tong]Hong Kong Baptist Univ, Ctr Surface Anal & Res, Kowloon, Hong Kong, Peoples R China

通讯作者信息:

  • 戴洪兴

    [Dai, Hongxing]Beijing Univ Technol, Lab Catalysis Chem & Nanosci, Dept Chem & Chem Engn, Coll Environm & Energy Engn, Beijing 100124, Peoples R China

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来源 :

APPLIED CATALYSIS A-GENERAL

ISSN: 0926-860X

年份: 2012

卷: 447

页码: 41-48

5 . 5 0 0

JCR@2022

ESI学科: CHEMISTRY;

ESI高被引阀值:233

JCR分区:1

中科院分区:2

被引次数:

WoS核心集被引频次: 46

SCOPUS被引频次: 49

ESI高被引论文在榜: 0 展开所有

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