石油化工2001，Vol.30Issue(5)：368-375,8.
TS－1催化剂催化合成4－甲基邻苯二酚
Performance of Zeolite TS-1 Catalyst for the Synthesis of 4-Methylcatechol from 4-Cresol
张英 1梁泽生 1吴保军 1张明森 1王秀恩1
作者信息
摘要
Abstract
The catalytic performance of zeolite TS-1 catalyst for the hydroxylation of 4-cresol to 4-methylcatechol with hydrogen peroxide was evaluated.The results indicated that,under optimal hydroxylation conditions[reaction temperature 75～85 ℃,feed molar ratio hydrogen peroxide to 4-cresol 0.3～0.35 and hydrogen peroxide concentration 30%(wt),catalyst to 4-cresol 6%～8%(wt),solvent(mixture of acetone and water,volume ratio 2/3)volume equal to that of 4-cresol,hydrogen peroxide being added dropwise during 3.5 h,then continuing to be reacted for 1.5 h],the conversion of 4-cresol was 19.91%～21.01%,the selectivity of 4-methylcatechol 69.96%～73.53% and the yield of 4-methylcatechol 14.64%～14.70%(to 4-cresol).The mechanism of 4-cresol hydroxylation was discussed.关键词
4-甲基邻苯二酚/4-甲酚羟基化/TS-1催化剂分类
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张英,梁泽生,吴保军,张明森,王秀恩..TS－1催化剂催化合成4－甲基邻苯二酚[J].石油化工,2001,30(5):368-375,8.
