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作者:

Wang, Zhiwei (Wang, Zhiwei.) | Li, Sha (Li, Sha.) | Xie, Shaohua (Xie, Shaohua.) | Liu, Yuxi (Liu, Yuxi.) | Dai, Hongxing (Dai, Hongxing.) (学者:戴洪兴) | Guo, Guangsheng (Guo, Guangsheng.) | Deng, Jiguang (Deng, Jiguang.)

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EI Scopus SCIE

摘要:

Volatile organic compounds (VOCs) cause damage to atmospheric environment and human health. Supported noble metal catalysts are widely used to control VOCs emissions. The high cost, and low H2O-, CO2-, and SO2-resistance of such catalysts are worthy to be improved. Herein we fabricated Ce-, V-, or W-doped TiO2 supported ultralow loading Pt catalysts via the in-situ molten salt method, and evaluated their catalytic performance for acetone (major pollutants in pharmaceutical industry) removal. Under the present reaction conditions, all the catalysts exhibited high catalytic activity and stability for acetone oxidation, with the temperature required 90% acetone conversion being of 245 degrees C over 0.57 wt% CeO2-0.05 wt% Pt/TiO2. The doping of Ce, V, or W enhanced the H2O-, CO2-, and SO2-tolerance ability of 0.05 wt% Pt/TiO2. More than 85 %85%, 70%, or 60% of acetone could be removed even in the presence of 20 vol% water vapor, 10 vol% CO2, or 100 ppm SO2, respectively. The improvement in SO2-tolerance ability was due to the inhibition of SO2 adsorption and oxidation activity as well as Ti(SO4)(2) or TiOSO4 formation. Acetone complete oxidation over 0.57 wt% CeO2-0.05 wt% Pt/TiO2 would follow the pathway: adsorbed acetone molecules -> acetic acid and formic acid -> carbonate species -> CO2 and H2O. The present supported Pt catalysts might be suitable for oxygenated VOCs removal.

关键词:

Catalytic oxidation CO2 H2O Molten-Salt method SO2-resistance Supported Pt catalyst Volatile organic compounds

作者机构:

  • [ 1 ] [Deng, Jiguang]Beijing Univ Technol, Key Lab Beijing Reg Air Pollut Control, Beijing Key Lab Green Catalysis & Separat, MOE Key Lab Enhanced Heat Transfer & Energy Conse, Beijing 100124, Peoples R China
  • [ 2 ] [Deng, Jiguang]Beijing Univ Technol, Coll Environm & Energy Engn, Beijing 100124, Peoples R China

通讯作者信息:

  • 邓积光

    [Deng, Jiguang]Beijing Univ Technol, Key Lab Beijing Reg Air Pollut Control, Beijing Key Lab Green Catalysis & Separat, MOE Key Lab Enhanced Heat Transfer & Energy Conse, Beijing 100124, Peoples R China

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来源 :

APPLIED CATALYSIS A-GENERAL

ISSN: 0926-860X

年份: 2019

卷: 579

页码: 106-115

5 . 5 0 0

JCR@2022

ESI学科: CHEMISTRY;

ESI高被引阀值:66

JCR分区:1

被引次数:

WoS核心集被引频次: 65

SCOPUS被引频次: 51

ESI高被引论文在榜: 0 展开所有

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中文被引频次:

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