Surfactant-aided hydrothermal preparation of La2-xSrxCuO4 single crystallites and their catalytic performance on methane combustion
作者： Lei Zhang , Yue Zhang , Jiguang Deng , Hongxing Dai
DOI: 10.1016/S1003-9953(11)60335-6
关键词: Ethylene glycol 、 Ammonium bromide 、 Catalysis 、 Chemical engineering 、 Tetragonal crystal system 、 Chemistry 、 Calcination 、 Selected area diffraction 、 Oxide 、 Crystallite 、 Inorganic chemistry
摘要: Abstract Perovskite-like oxide La 2- x Sr CuO 4 ( = 0, 1) single crystallites with microrod-like morphologies and tetragonal crystal structures were prepared hydrothermally at 240°C poly(ethylene glycol) (PEG) or hexadecyltrimethyl ammonium bromide (CTAB) as a surfactant after calcination 850°C. The physicochemical properties of the materials characterized by means XRD, BET, SEM, TEM/SAED (selected-area electron diffraction), XPS H 2 -TPR techniques. It is found that doping 2+ to lattice enhanced catalytic activity for methane combustion LaSrCuO catalyst derived from PEG best among tested ones. concluded factors, such adsorbed oxygen species concentration, reducibility surface area, determined performance single-crystalline materials.
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