화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Journal of Industrial and Engineering Chemistry, Vol.19, No.2, 561-565, March, 2013
DOI10.1016/j.jiec.2012.09.026  Export Citation
Catalytic performance of LaCo0.5M0.5O3 (M = Mn, Cr, Fe, Ni, Cu) perovskite-type oxides and LaCo0.5Mn0.5O3 supported on cordierite for CO oxidation
Xiaokang Yan, Qiong Huang, Bing Li, Xiaoliang Xu, Yingwen Chen, Shemin Zhu1, and Shubao Shen†
  • State Key Laboratory of Materials – Oriented Chemical Engineering, Nanjing University of Technology, Nanjing 211816, China
  • 1College of Materials Science and Engineering, State Key Laboratory of Materials – Oriented Chemical Engineering, Nanjing University of Technology, Nanjing 211816, China
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Catalytic combustion of CO over perovskite-type oxides LaCo0.5M0.5O3 (M = Mn, Cr, Fe, Ni, Cu) and LaCo0.5Mn0.5O3 supported on cordierite were investigated. The catalysts were synthesized by impregnation method with citrate and characterized by XRD, SEM and TPR. The LaCo0.5Mn0.5O3 catalyst showed much higher activity in CO oxidation compared with LaCo0.5M0.5O3 (M = Cr, Fe, Ni, Cu) due to different kinds of valence state and lattice oxygen content. When LaCo0.5Mn0.5O3 was supported on cordierite, the activity was improved significantly. However, calcining temperature and the presence of water vapor affected the catalytic activity due to sintering and competition of H2O with CO for adsorption, respectively.
Keywords:LaCo0.5Mn0.5O3;Perovskite-type oxides;CO oxidation;Catalysts
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