文献类型：期刊文献

中文题名：电解合成对氨基酚反应催化剂

英文题名：Catalyst for preparation of PAP using electro-reduction

作者：郎超[1];钮东方[1];张新胜[1]

机构：[1]华东理工大学化学工程联合国家重点实验室,上海200237

年份：2010

卷号：61

期号：S1

起止页码：10

中文期刊名：化工学报

外文期刊名：CIESC Journal

收录：CSTPCD;;EI(收录号：20111413891097);Scopus;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

语种：中文

中文关键词：对氨基苯酚;酸环境;Bamberger重排;固体酸催化剂

外文关键词：p-aminophenol;acid solution;Bamberger rearrangement;solid acid catalysts

摘要：研究了硝基苯电解还原制备对氨基酚过程中的Bamberger重排反应。首先用循环伏安法考察了几种催化剂的催化活性,发现硅藻土、硫酸氧化锆、β沸石加入后硝基苯的还原峰电流有显著增大。还考察了羟基苯胺在不同条件下的转位效果。实验发现,酸性条件下,最佳反应条件为H+浓度为0.5～1mol·L-1、反应时间为15min,最佳无机酸为磷酸。温度为70℃时,硅藻土和硫酸氧化锆有较为显著的催化效果。
In this work the Bamberger rearrangement reaction for p-aminophenol(PAP)prepared by electrochemical reduction of nitrobenzene was investigated.Cyclic voltammetry was used to investigate the catalytic effect of several catalysts,and the peak current of the reduction of nitrobenzene obviously increased when kieselguhr,sulphated zirconia and beta zeolite were added,respectively.The rearrangement of phenylhydroxylamine(PHA)was studied in the presence of catalysts.It has been found that the best experimental conditions in acid solution were:the concentration of H+was 0.5 mol·L-1—1 mol·L-1,reaction time was 15 min,the most effective acid was phosphoric acid.When the reaction temperature was 70℃,kieselguhr and sulphated zirconia could effectively improve the yield of rearrangement of PHA to PAP.