Space-confined synthesis of zeolite Beta microspheres via steam-assisted crystallization

作者：Yang, Hong; Yang, Panpan; Liu, Xiaohui; Wang, Yanqin^*

来源：Chemical Engineering Journal, 2016, 299: 112-119.

DOI：10.1016/j.cej.2016.04.009

• Hierarchical Beta zeolite
• Carbon-silica composite monolith
• Reversed crystal-growth route
• Fructose conversion

A direct synthetic route for hierarchical Beta zeolite has been developed via steam-assisted crystallization (SAC) of carbon-silica composite monolith. SEM and TEM observations show that Hier-Beta zeolites are rough spheres (diameter: 500-600 nm), composed of connected nanoparticles and have single crystallinity. Deep investigation shows that the growth of the zeolite spheres undergo a reverse crystal growth route - surface-to-core crystallization. Such materials demonstrate the greatly enhanced catalytic activity in the dehydration of fructose into 5-hydroxymethylfurfural (HMF), because of the intracrystalline mesoporous structure and efficient diffusion of reactant/product molecules.

• 出版日期2016-9-1
• 单位华东理工大学