Synthesis of chiral polymorph A-enriched zeolite Beta with an extremely concentrated fluoride route

Sci Rep. 2015 Jun 22:5:11521. doi: 10.1038/srep11521.

Abstract

Chiral zeolitic materials with intrinsically chiral frameworks are highly desired because they can combine both shape selectivity and enantioselectivity. In the field of zeolite, the synthesis of chiral polymorph A of zeolite Beta or chiral polymorph A-enriched zeolite Beta is one of the biggest challenges. We demonstrate here a generalized extremely concentrated fluoride route for the synthesis of chiral polymorph A-enriched zeolite Beta in the presence of five achiral organic structure-directing agents. The polymorph A-enriched Ti-Beta shows a higher enantioselectivity for the asymmetric epoxidation of alkenes than the normal Ti-Beta.

Publication types

  • Research Support, Non-U.S. Gov't