文献类型：期刊文献

英文题名：Trace water/amino-modified silica aerogel catalytic system in the one-pot sequential reaction of benzaldehyde dimethyl acetal and nitromethane

作者：Feng, Xiaolan[1];Wang, Lijun[1];Yao, Xiandong[1];Dong, Huaping[1];Wang, Xiaoxia[1];Wang, Yusen[1]

机构：[1]Shaoxing Univ, Sch Chem & Chem Engn, Shaoxing 312000, Peoples R China

年份：2017

卷号：90

起止页码：106

外文期刊名：CATALYSIS COMMUNICATIONS

收录：SCI-EXPANDED(收录号：WOS:000392039000025)、、EI(收录号：20165003121223)、Scopus(收录号：2-s2.0-85001968811)、WOS

基金：We greatly acknowledge the financial support from the National Natural Science Foundation of China (Grant No. 51402195). We thank Xiudong Li, Qiumei Xu, Ping Fang, Yinying Jin, and Linxia Wang from the Analysis and Test Center of Shaoxing University for the useful discussion.

语种：英文

外文关键词：Synergistic catalysis; Porous material; One-pot reaction; Silica aerogel

外文摘要：In this work, we demonstrate that solid-base such as amino-modified silica aerogel (SA-NH2) together with trace water showed excellent catalytic performance in one-pot sequential reaction of acid-catalyzed benzaldehyde dimethyl acetal hydrolysis and base-catalyzed Henry reaction which was usually catalyzed by acid-base bifunctional heterogeneous catalyst. The role of trace water in the reaction was discussed by batch control experiment. This SA-NH2/water catalytic system showed high reactant conversions (>99%) and main product selectivities (up to 99.4%). The trace water induced acid catalysis mechanism and a possible H+/-NH2 coexistence mechanism were given to explain the synergistic catalytic effect of solid-base and trace water. (C) 2016 Elsevier B.V. All rights reserved.