title: Dual-mesoporous ZSM-5 zeolite with highly b-axis-oriented large mesopore channels for the production of benzoin ethyl ether.
abstract: Dual-mesoporous ZSM-5 zeolite with highly b axis oriented large mesopores was synthesized by using nonionic copolymer F127 and cationic surfactant CTAB as co-templates. The product contains two types of mesopores--smaller wormlike ones of 3.3 nm in size and highly oriented larger ones of 30-50 nm in diameter along the b axis--and both of them interpenetrate throughout the zeolite crystals and interconnect with zeolite microporosity. The dual-mesoporous zeolite exhibits excellent catalytic performance in the condensation of benzaldehyde with ethanol and greater than 99 % selectivity for benzoin ethyl ether at room temperature, which can be ascribed to the zeolite lattice structure offering catalytically active sites and the hierarchical and oriented mesoporous structure providing fast access of reactants to these sites in the catalytic reaction. The excellent recyclability and high catalytic stability of the catalyst suggest prospective applications of such unique mesoporous zeolites in the chemical industry.
authors.affiliation: State Key Laboratory of High Performance Ceramics and Superfine Microstructures, Shanghai Institute of Ceramics, Chinese Academy of Sciences, 1295 Ding-xi Road, Shanghai 200050, PR China.
authors.forename: Xiaoxia
authors.initials: X
authors.lastname: Zhou
authors.forename: Hangrong
authors.initials: H
authors.lastname: Chen
authors.forename: Yan
authors.initials: Y
authors.lastname: Zhu
authors.forename: Yudian
authors.initials: Y
authors.lastname: Song
authors.forename: Yu
authors.initials: Y
authors.lastname: Chen
authors.forename: Yongxia
authors.initials: Y
authors.lastname: Wang
authors.forename: Yun
authors.initials: Y
authors.lastname: Gong
authors.forename: Guobin
authors.initials: G
authors.lastname: Zhang
authors.forename: Zhu
authors.initials: Z
authors.lastname: Shu
authors.forename: Xiangzhi
authors.initials: X
authors.lastname: Cui
authors.forename: Jinjin
authors.initials: J
authors.lastname: Zhao
authors.forename: Jianlin
authors.initials: J
authors.lastname: Shi
keywords: heterogeneous catalysis; hydrothermal synthesis; mesoporous materials; template synthesis; zeolites