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论文类型：期刊论文

发表时间：2016-11-01

发表刊物：JOURNAL OF COLLOID AND INTERFACE SCIENCE

收录刊物：SCIE、EI、PubMed、Scopus

卷号：481

页面范围：100-106

ISSN号：0021-9797

关键字：Catalytic microreactor; Hierarchically porous silica; Pyrogallol; Surface modification; Metal oxides; Knoevenagel reaction

摘要：A facile method is reported to construct monolithic microreactor with high catalytic performance for Knoevenagel reaction. The microreactor is based on hierarchically porous silica (HPS) which has interconnected macro- and mesopores. Then the HPS is surface modified by pyrogallol (PG) polymer. Al(NO3)(3) and Mg(NO3)(2) are loaded on the surface of HPS through coordination with-OH groups of PG. After thermal treatment, Al(NO3)(3) and Mg(NO3)(2) are converted Al2O3 and MgO. The as-synthesized catalytic microreactor shows a high and stable performance in Knoevenagel reaction. The microreactor possess large surface area and interconnected pore structures which are beneficial for reactions. Moreover, this economic, facile and eco-friendly surface modification method can be used in loading more metal oxides for more reactions. (C) 2016 Elsevier Inc. All rights reserved.