Modulate the metal support interactions to optimize the surface-interface features of Pt/CeO_2 catalysts for enhancing the toluene oxidation

Fan Jie; Sun Yuhang; Fu MingliLi JiaqiYe Daiqi

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Modulate the metal support interactions to optimize the surface-interface features of Pt/CeO_2 catalysts for enhancing the toluene oxidation

机译：Modulate the metal support interactions to optimize the surface-interface features of Pt/CeO_2 catalysts for enhancing the toluene oxidation

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Metal support interactions modulation is one of the effective strategies to enhance the catalytic performance. Herein, we reported that modulating metal support interactions by switching the strength (CO, H2, NH3) and temperature (200, 300, 400 degrees C) of reducing gases is a facile way to improve the catalytic performance of Pt/CeO2 for toluene oxidation. The distinct reduction treatments will stepwise enhance the reducibility, ratio of Pt0 and oxygen vacancy concentration, which dominated the activity. The metal support interactions modulation can significantly affect toluene deep oxidation (from benzoate to formate or monodentate carbonate) via enhancing the mobility of surface/lattice oxygen and activation ability towards O2 molecules, since the main activation sites for O2 molecules expand from Pt0 sites to oxygen vacancies and Pt0 sites with temperature increasing.

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《Journal of hazardous materials》 |2022年第15期|127505.1-127505.15|共15页
作者
Fan Jie; Sun Yuhang; Fu MingliLi JiaqiYe Daiqi;
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作者单位

South China Univ Technol, Sch Environm & Energy, Guangzhou 510006, Peoples R China;

South China Univ Technol, Sch Environm & Energy, Guangzhou 510006, Peoples R China|Guangdong Prov Key Lab Atmospher Environm & Pollu, Guangzhou 510006, Peoples R China|Natl Engn Lab VOCs Pollut Control Technol & Equip, Guangzhou 510006, Peoples R China;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
原文格式 PDF
正文语种英语
中图分类
关键词
Metal support interactions; Pt; CeO2; VOCs; In situ DRIFTS and Raman;

Modulate the metal support interactions to optimize the surface-interface features of Pt/CeO_2 catalysts for enhancing the toluene oxidation

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