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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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萘与异丙醇在γ-al2o3负载的磷钨酸催化剂上烷基化
DOI: 10.3969/j.issn.1671-7627.2004.02.005, PP. 24-27
Keywords: 磷钨酸,γ-al2o3,萘的异丙基化,2,6-二异丙基萘
Abstract:
以无水乙醇为溶剂、γ-al2o3为载体,采用过量浸渍法制备了一系列磷钨杂多酸(pw)催化剂,用xrd,nh3-tpd等手段对其物化性质进行了表征,并考察该类催化剂在萘与异丙醇的烷基化反应中的催化性能.结果表明,pw负载质量分数达到40%仍高度分散于γ-al2o3表面,此时催化剂呈现较高的活性(萘转化率71.7%)和β,β′位选择性(82.7%),低负载量有利于2,6-dipn的生成.该催化剂的适宜活化温度和反应温度分别为573k和473k.
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