Synthesis of ordered mesoporous crystalline boron phosphate scaffold with double diamond surface structure  

作　　者：Chao Wang Wen-Duo Lu Jiao Wang Shunai Che An-Hui Lu Lu Han 

机构地区：[1]School of Chemical Science and Engineering,Tongji University,Shanghai 200092,China [2]State Key Laboratory of Fine Chemicals,Liaoning Key Laboratory for Catalytic Conversion of Carbon Resources,School of Chemical Engineering,Dalian University of Technology,Dalian 116024,China [3]School of Chemistry and Chemical Engineering,Frontiers Science Center for Transformative Molecules,State Key Laboratory of Metal Matrix Composites,Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs,Shanghai Jiao Tong University,Shanghai 200240,China

出　　处：《Science China Chemistry》2025年第2期590-600,共11页中国科学(化学英文版)

基　　金：supported by the National Natural Science Foundation of China(21733002,22108028,22373074);Fundamental Research Funds for the Central Universities.

摘　　要：Ordered mesoporous materials have received great attention due to their well-defined pore structures and potential applications in catalysis,adsorption,separation,drug delivery,etc.Although various compositions of mesoporous solids have been successfully prepared,the preparation of crystalline non-metallic oxyacid salts with ordered mesoporosity remains a major challenge.Herein,we report the synthesis of a mesoporous solid acid crystalline boron phosphate(BPO_(4))catalyst with a bicontinuous shifted double diamond(SDD)hyperbolic surface structure.The BPO_(4) scaffold was obtained by synergistic selfassembly in a mixed solvent of water and tetrahydrofuran using the diblock copolymer poly(ethylene oxide)-block-polystyrene as template and phosphoric acid and orthoboric acid as inorganic sources.The structure consists of two sets of diamond networks adjacent to each other with a mesostructural scale tetragonal symmetry(space group I4_(1)/amd)with unit cell parameters of a=80 nm and c=113 nm,which affords the scaffold a specific surface area of 44 m^(2)/g.As a solid acid catalytic material,the SDD BPO_(4) scaffold exhibited excellent catalytic activity at room temperature with a conversion of furfural to 2-(dimethoxymethyl)furan over 70%and can be reused after recovery without serious loss of activity.In the propane oxidative dehydrogenation reaction,SDD BPO_(4) demonstrated high olefin productivity and selectivity while maintaining high reaction rate.This study provides ideas for the preparation of ordered mesoporous crystalline catalytic materials and demonstrates their potential for practical applications.

关 键 词：boron phosphate mesoporous material SELF-ASSEMBLY block copolymer catalyst 

分 类 号：O64[理学—物理化学]