title: One-step synthesis of hierarchical mesoporous zeolite Beta microspheres from assembly of nanocrystals.
abstract: Hierarchical mesoporous zeolite Beta microspheres (Beta-MPs) from assembly of nanocrystals were successfully one-step-synthesized through a simple polymer agent. The Beta-MPs sample was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), nitrogen adsorption isotherms, and thermogravimetric analysis. The characteristics of the samples are comparable with conventional Beta zeolite. The Beta-MPs with a hierarchical mesoporous structure and a uniform size could be easily separated with filtration. This procedure successfully avoided the high-speed centrifugation of the nano-zeolites during the traditional method. As catalysts, the Beta-MPs showed higher catalytic activity and selectivity than conventional Beta in alkylation of benzene with isopropanol to cumene.
authors.affiliation: Department of Chemistry and Chemical Engineering, Huainan Normal University, Huainan 232001, PR China. ycy2006cc@yahoo.com.cn
authors.forename: Chengyang
authors.initials: C
authors.lastname: Yin
authors.forename: Dong
authors.initials: D
authors.lastname: Tian
authors.forename: Mai
authors.initials: M
authors.lastname: Xu
authors.forename: Yijun
authors.initials: Y
authors.lastname: Wei
authors.forename: Xia
authors.initials: X
authors.lastname: Bao
authors.forename: Yonghong
authors.initials: Y
authors.lastname: Chen
authors.forename: Fengwu
authors.initials: F
authors.lastname: Wang