Methanol-to-propylene (MTP) is one of the most important processes in modern chemical industry. ZSM-5 is widely used in MTP process, and its anisotropy of diffusion path lead to a varied product distribution. The diffusion of aromatics products results in a lower olefin selectivity. Herein, for the first time, we designed a surface-specific silica deposition method to selectively block straight channels. The surface-specific coated sample shows a significantly lower aromatic selectivity (3%) compared to non-specific coated counterpart (12%), and paraffin selectivity is also suppressed. This study provide new methodology for zeolite structure construction and will be greatly beneficial to industrial MTP process.

Highly selective conversion of methanol to propylene: Design of a MFI zeolite with selective-blockage of (010) surfaces

2019 Spring National Meeting

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.