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《Chinese Journal of Catalysis》 2011-04
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In Situ Synthesis of Cu-SAPO-34/Cordierite for the Catalytic Removal of NO_x From Diesel Vehicles by C_3H_8

LIU Zhiqiang,TANG Lei,CHANG Liping,WANG Jiancheng,BAO Weiren Key Laboratory of Coal Science and Technology,Ministry of Education and Shanxi Province,Taiyuan University of Technology,Taiyuan 030024,Shanxi,China  
A Cu-SAPO-34/cordierite catalyst was prepared by in situ hydrothermal synthesis.The morphology and structure of the Cu-SAPO-34/cordierite samples were characterized by X-ray diffraction,scanning electron microscopy,and physical adsorption-desorption analyzer.The removal of NOx from simulated diesel vehicle exhaust gas was carried out using a fixed-bed reactor.The effects of C3H8,O2 concentrations,and water vapor on the activity of the catalyst were studied.The results indicate that the Cu-SAPO-34 coatings obtained by the in situ synthesis are firm and compact,and the loading amount is found to be more than 20% after one synthesis operation.The surface areas of the Cu-SAPO-34/cordierite catalysts increase greatly compared with that of cordierite.The active Cu component prepared through in situ synthesis can significantly improve the activity of selective catalytic reduction of NOx by C3H8.NOx reduction over the Cu-SAPO-34/cordierite catalyst is more than 60% between 500 and 650 °C.The NOx conversion decreases after the addition of 10% water vapor to the feed gas but the deactivation caused by water vapor is not permanent.
【Fund】: 国家自然科学基金(20906067);; 山西省科技基础条件平台建设项目(2010091015)~~
【CateGory Index】: X701
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【Citations】
Chinese Journal Full-text Database 2 Hits
1 WU Peng1,YU Qing2,YAN Jingjing2,WU Guangjun2,LI Landong2,*,GUAN Naijia2 1Beijing Research Institute of China Shenhua Coal to Liquid and Chemical Co.Ltd,Beijing 100011,China 2Institute of New Catalytic Materials Science,College of Chemistry,Nankai University,Tianjin 300071,China;Progress in Selective Catalytic Reduction of NO_x by Hydrogen in Excess Oxygen[J];Chinese Journal of Catalysis;2010-08
2 CHEN Shuwei1,YAN Xiaoliang2,CHEN Jiaqi2,MA Jinghong2,LI Ruifeng1,2,* 1College of Chemistry and Chemical Engineering,Taiyuan University of Technology,Taiyuan 030024,Shanxi,China 2Key Laboratory of Coal Science and Technology for Ministry of Education,Institute of Special Chemicals,Taiyuan University of Technology,Taiyuan 030024,Shanxi,China;Selective Catalytic Reduction of NO in Excess Oxygen by Methane over Mn/ZSM-5 Catalysts[J];Chinese Journal of Catalysis;2010-09
【Secondary Citations】
Chinese Journal Full-text Database 1 Hits
1 JING Guohua1,2,LI Junhua1,,YANG Dong1,HAO Jiming1 1Department of Environmental Science and Engineering,Tsinghua University,Beijing 100084,China 2Department of Environmental Science and Engineering,Huaqiao University,Xiamen 361021,Fujian,China;Promotional Mechanism of Sulfation on Selective Catalytic Reduction of NO_x by Methane Over In/SO_4~(2-)/TiO_2[J];Chinese Journal of Catalysis;2009-05
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