首页 | 本学科首页   官方微博 | 高级检索  
     检索      

锰八面体分子筛的合成、表征及其对二甲醚燃烧的催化性能
引用本文:余林,孙明,余坚,余倩,郝志峰,李朝圣.锰八面体分子筛的合成、表征及其对二甲醚燃烧的催化性能[J].催化学报,2008,29(11).
作者姓名:余林  孙明  余坚  余倩  郝志峰  李朝圣
作者单位:广东工业大学轻工化工学院,广东广州,510006
基金项目:广东省自然科学基金,Project of Science and Technology of Guangdong,广州市科技计划,Key Program in Natural Science of Higher Education of Guangdong 
摘    要:以高锰酸钾和马来酸为原料,以聚乙二醇单甲醚(MPEG)为模板剂,采用溶胶凝胶法合成了锰八面体分子筛(OMS-2),并将其用于二甲醚的催化燃烧反应.XRD,FT-IR和UV-Vis结果表明,合成的材料为隐钾锰矿型的锰氧化物.TEM结果表明合成的材料具有棒状的外形结构,其中MPEG起模板导向剂的作用.O2-TPD和H2-TPR结果表明合成的OMS-2材料容易还原,富有晶格氧.OMS-2材料在二甲醚催化燃烧中表现出优异的催化性能,能够在较低的温度下将二甲醚完全转化为CO2和H2O,晶格氧在该反应中起非常重要的作用.

关 键 词:氧化锰  八面体分子筛  二甲醚  燃烧  二氧化碳  

Synthesis and Characterization of Manganese Oxide Octahedral Molecular Sieve and Its Catalytic Performance for DME Combustion
YU Lin,SUN Ming,YU Jian,YU Qian,HAO Zhifeng,LI Chaosheng.Synthesis and Characterization of Manganese Oxide Octahedral Molecular Sieve and Its Catalytic Performance for DME Combustion[J].Chinese Journal of Catalysis,2008,29(11).
Authors:YU Lin  SUN Ming  YU Jian  YU Qian  HAO Zhifeng  LI Chaosheng
Abstract:Manganese oxide octahedral molecular sieve (OMS-2) was prepared by the sol-gel method using KMnO4 and maleic acid in the presence of methoxypolyethylene glycols (MPEG) and used for the catalytic combustion of dimethyl ether (DME). XRD,FT-IR and UV-Vis data confirmed that the formation of cryptomelane-type manganese oxide. TEM results showed that the OMS-2 had rod-like shape and the MPEG played a role as a structure-directing agent in the OMS-2 formation. O2-TPD and H2-TPR results indicated that the OMS-2 was rich in facile lattice oxygen,can activate oxygen and be easily reduced by H2. The OMS-2 possessed excellent catalytic performance for DME combustion,and could convert DME to CO2 and H2O at a relatively low temperature. The lattice oxygen played a key role in the DME combustion.
Keywords:manganese oxide  octahedral molecular sieve  dimethyl ether  combustion  carbon dioxide  water
本文献已被 CNKI 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号