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Issue:
ACYLATION OF TOLUENE WITH ACETIC ANHYDRIDE OVER H β ZEOLITE
Author(s):
HU Tuoping
,
QIN Zhangfeng
,
WANG Jianguo
Pages:
624
-
627
Year:
2003
Issue:
6
Journal:
JOURNAL OF FUEL CHEMISTRY AND TECHNOLOGY
Keyword:
甲苯
;
乙酸酐
;
β分子筛
;
甲基苯乙酮
;
酰化
;
溶剂效应
;
Abstract:
以Hβ分子筛为催化剂,对甲苯与乙酸酐(AA)的酰化反应进行了研究.通过研究反应温度、压力、甲苯与乙酸酐(AA)摩尔比、催化剂用量、以及溶剂的种类和用量等因素对反应转化率和选择性的影响,确定了较优的反应条件.结果表明,Hβ分子筛对甲苯与乙酸酐(AA)酰化反应具有较好的催化活性和选择性,适宜的反应条件为:温度130 ℃、甲苯/乙酸酐(AA)摩尔比20、催化剂/乙酸酐(AA)重量比0.8,极性溶剂如硝基苯等对酰化反应有一定的促进作用,但选择性有所下将,而非极性溶剂如二氧化碳可部分抑制催化剂的失活.
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