Issue 8, 2016

One-pot rota-crystallized hollownest-structured Ti–zeolite: a calcination-free and recyclable catalytic material

Abstract

A hydrothermal rota-crystallization method is developed for the one-step synthesis of a hollownest-structured zeolite precursor with the shell composed of autogenously-intergrown MWW nanosheet crystals containing a large number of stacking-pores without using any porogen or hard scaffold. This material possesses a large external surface area. By simple acid washing, the resultant Ti-containing catalyst can be directly used in the epoxidation of alkenes with hydrogen peroxide. The excellent catalytic activity over the Ti-HSZ catalyst is assumed to be due to the exposure of more Ti active sites over the MWW nanosheet crystals in the shell of the catalyst. More importantly, this Ti-HSZ catalyst washed with H2O2/ethanol solution has been reused 6 times without an appreciable decrease in both the conversion of the allyl chloride and the selectivity of the epichlorohydrin, which is ascribed to the structural stability of the hollownest-structured zeolite.

Graphical abstract: One-pot rota-crystallized hollownest-structured Ti–zeolite: a calcination-free and recyclable catalytic material

Supplementary files

Article information

Article type
Edge Article
Submitted
20 Apr 2016
Accepted
04 May 2016
First published
04 May 2016
This article is Open Access

All publication charges for this article have been paid for by the Royal Society of Chemistry
Creative Commons BY license

Chem. Sci., 2016,7, 4966-4972

One-pot rota-crystallized hollownest-structured Ti–zeolite: a calcination-free and recyclable catalytic material

D. Zhou, T. Zhang, Q. Xia, Y. Zhao, K. Lv, X. Lu and R. Nie, Chem. Sci., 2016, 7, 4966 DOI: 10.1039/C6SC01735E

This article is licensed under a Creative Commons Attribution 3.0 Unported Licence. You can use material from this article in other publications without requesting further permissions from the RSC, provided that the correct acknowledgement is given.

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