期刊
JOURNAL OF NATURAL GAS CHEMISTRY
卷 21, 期 1, 页码 69-75出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/S1003-9953(11)60335-6
关键词
perovskite-like oxide; La2-xSrxCuO4; single crystallite; surfactant-aided hydrothermal preparation; methane combustion
资金
- National Natural Science Foundation of China [20973017, 21077007]
- Creative Research Foundation of Beijing University Technology [00500054R4003]
- Creative Research Team of Beijing Municipality [PHR201007105]
Perovskite-like oxide La2-xSrxCuO4 (x = 0, 1) single crystallites with microrod-like morphologies and tetragonal crystal structures were prepared hydrothermally at 240 degrees C with poly(ethylene glycol) (PEG) or hexadecyltrimethyl ammonium bromide (CTAB) as a surfactant and after calcination at 850 degrees C. The physicochemical properties of the materials were characterized by means of XRD, BET, SEM, TEM/SAED (selected-area electron diffraction), XPS and H-2-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.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据