OALib Journal期刊
ISSN: 2333-9721
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Ce-Beta分子筛的制备及其催化性能
DOI: 10.1016/S1872-2067(14)60277-1, PP. 801-805
Keywords: Ce-Beta分子筛,后合成,脱铝,开环水合,环氧
Abstract:
?采用简单、易重现的两步后合成法成功制备了Ce-Beta分子筛.制备过程中,H-Beta分子筛首先经过脱铝处理得到Si-Beta分子筛,然后再以异丙醇铈为前驱体,通过干法浸渍的途径向Si-Beta分子筛引入Ce(IV).利用XRD,FT-IR,UV-Vis和1HMASNMR等对其结构进行了表征,结果表明,Ce(IV)物种以四配位的形式成功引入Beta分子筛的骨架,Ce原子进入分子筛骨架的机理通过DRIFT光谱得以证实.通过环氧化合物水合制备1,2-二醇反应对所制的Ce-Beta催化剂进行了催化性能评价.
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