화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.54, 359-368, October, 2017
DOI10.1016/j.jiec.2017.06.016  Export Citation
Enhanced activity and stability of the monolithic Pt/SiO2.Al2O3 diesel oxidation catalyst promoted by suitable tungsten additive amount
Yanli Liang, Ming Zhao†, Jianli Wang†, Mengmeng Sun1, Shanshan Li, Yufen Huang, Lin Zhong2, Maochu Gong, and Yaoqiang Chen
  • Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry,, Sichuan University, Chengdu,Sichuan 610064, China
  • 1Institute of New Energy and Low-Carbon Technology, Sichuan University, Chengdu, Sichuan 610064, China
  • 2College of Chemical Engineering, Sichuan University, Chengdu, Sichuan 610064, China
E-mail:,
A series of the modified Pt/SiO2-Al2O3 diesel oxidation catalysts with different WO3 loading were prepared through co-impregnation method. With an optimum additive loading of 2 wt% WO3, the catalyst significantly improved the performance and its stability. Compared to the free-tungsten sample, the catalyst increased the maximum conversion of NO by 5-10% and decreased the reaction temperature for 30% NO conversion by 7-28 °C. It was found that there exist the electron and structure interaction between platinum and tungsten species. The interactions can generate and maintain more Pt sites in metallic state for the catalytic oxidation with enhanced activity and stability.
Keywords:Diesel oxidation catalyst;Tungsten addition;Catalytic oxidation;Stability
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