Surfactant-aided hydrothermal preparation of La2-xSrxCuO4 single crystallites and their ca

Surfactant-aided hydrothermal preparation of La2-xSrxCuO4 single crystallites and their catalytic

performance on methane combustion

Lei Zhang;Yue Zhang;Jiguang Deng;Hongxing Dai

【期刊名称】《天然气化学（英文版）》 【年(卷),期】2012(021)001

【摘要】Perovskite-like oxide La2-xSrxCuO4 (x =0,1) single crystallites with microrod-like morphologies and tetragonal crystal structures were prepared hydrothermally at 240 ℃ with poly(ethylene glycol) (PEG) or hexadecyltrimethyl ammonium bromide (CTAB) as a surfactant and after calcination at 850 ℃.The physicochemical properties of the materials were characterized by means of XRD,BET,SEM,TEM/SAED (selected-area electron diffraction),XPS and H2-TPR techniques.It is found that doping Sr2+ to La2CuO4 lattice enhanced the catalytic activity for methane combustion and the LaSrCuO4 catalyst derived from PEG is the best among the tested ones.It is concluded that factors,such as adsorbed oxygen species concentration,reducibility and surface area,determined the catalytic performance of such single-crystalline materials. 【总页数】7页(69-75) 【关键词】

【作者】Lei Zhang;Yue Zhang;Jiguang Deng;Hongxing Dai

【作者单位】Laboratory of Catalysis Chemistry and Nanoscience,

Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China;Laboratory of Catalysis Chemistry and Nanoscience, Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China;Laboratory of Catalysis Chemistry and Nanoscience, Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China;Laboratory of Catalysis Chemistry and Nanoscience, Department of Chemistry and Chemical Engineering, College of Environmental and Energy Engineering, Beijing University of Technology, Beijing 100124, China 【正文语种】中文 【中图分类】 【文献来源】

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