title: Bio-inspired immobilization of metal oxides on monolithic microreactor for continuous Knoevenagel reaction.
abstract: 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.
authors.affiliation: School of Chemistry, Dalian University of Technology, Dalian 116024, Liaoning, PR China.
authors.forename: Wentong
authors.initials: W
authors.lastname: Song
authors.affiliation: School of Chemistry, Dalian University of Technology, Dalian 116024, Liaoning, PR China; Department of Chemistry and Biochemistry, University of California San Diego, La Jolla, 92093, United States.
authors.forename: Da
authors.initials: D
authors.lastname: Shi
authors.affiliation: School of Chemistry, Dalian University of Technology, Dalian 116024, Liaoning, PR China. Electronic address: taosy@dlut.edu.cn.
authors.forename: Shengyang
authors.initials: S
authors.lastname: Tao
authors.affiliation: School of Chemistry, Dalian University of Technology, Dalian 116024, Liaoning, PR China.
authors.forename: Zhaoliang
authors.initials: Z
authors.lastname: Li
authors.affiliation: School of Chemistry, Dalian University of Technology, Dalian 116024, Liaoning, PR China.
authors.forename: Yuchao
authors.initials: Y
authors.lastname: Wang
authors.affiliation: School of Chemistry, Dalian University of Technology, Dalian 116024, Liaoning, PR China.
authors.forename: Yongxian
authors.initials: Y
authors.lastname: Yu
authors.affiliation: Carbon Research Laboratory, Liaoning Key Lab for Energy Materials and Chemical Engineering, State Key Lab of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, Liaoning, PR China.
authors.forename: Jieshan
authors.initials: J
authors.lastname: Qiu
authors.affiliation: School of Chemistry, Dalian University of Technology, Dalian 116024, Liaoning, PR China.
authors.forename: Min
authors.initials: M
authors.lastname: Ji
authors.affiliation: School of Chemistry, Dalian University of Technology, Dalian 116024, Liaoning, PR China.
authors.forename: Xinkui
authors.initials: X
authors.lastname: Wang
keywords: Catalytic microreactor; Hierarchically porous silica; Knoevenagel reaction; Metal oxides; Pyrogallol; Surface modification