石油化工高等学校学报2018，Vol.31Issue(2)：20-26,7.DOI:10.3969/j.issn.1006-396X.2018.02.004
ZSM-5分子筛催化苯基羟胺制对氨基苯酚性能考察
Preparation of p-Aminophenol from Phenyl-Hydroxylamine Catalyzed by ZSM-5 Zeolites
摘要
Abstract
Na-ZSM-5 was prepared by in-situ hydrothermal process.H ZSM-5 (n (Si)/n (Al)=40) molecular sieves were prepared by ion exchange.p-Aminophenol was prepared by Bamberger rearrangement catalyzed by the molecular sieves using phenyl-hydroxylamine as raw material.XRD,FT-IR,N2 adsorption-desorption,SEM and Py-FTIR techniques were used to study the topological structure,micropore pore size and acidity of Na-ZSM-5 and H-ZSM-5 molecular sieves.The results showed that the prepared molecular sieves had MFI microporous structures with well crystallinity.Py-FTIR technique showed that Na-ZSM-5 had almost no B acid.H-ZSM-5 (40) molecular sieve had weaker B acid and L acid.Catalysis performance showed that phenyl-hydroxylamine conversion was low in the presence of ZSM-5 with weaker acidity as catalyst.However,because of its moderate pore size,p-aminophenol seleetivity and yield reached as high as 72.48％ and 58.75％,respectively.The optimal conditions of p-aminophenol preparation from phenyl-hydroxylamine Bamberger rearrangement were as follows:mass ratio 1 ∶ 3 of phenyl-hydroxylamine to H-ZSM-5(40) molecular sieve,optimal reaction temperature of 353 K,optimal reaction time of 2 h,and water as solvent.Phenyl-hydroxylamine conversion and p-aminophenol selectivity were as high as 86.35％ and 78.33％,respectively.关键词
ZSM-5分子筛/固体酸催化剂/苯基羟胺/Bambenger重排/对氨基苯酚Key words
ZSM-5 molecular sieve/Solid acid catalyst/Phenyl-hydroxylamine/Bambenger rearrangement/p-Aminophenol分类
能源科技引用本文复制引用
李文强,陈子璇,丁晓光,安会勇,于芳..ZSM-5分子筛催化苯基羟胺制对氨基苯酚性能考察[J].石油化工高等学校学报,2018,31(2):20-26,7.基金项目
国家自然科学基金项目(No.21402078). （No.21402078）
