Einkristallines Hohles Zsm-5-Molekularsieb und Katalysator mit dem Molekularsieb sowie Herstellungsverfahren dafür und Verwendung davon

Details

Veröffentlichungs-Nr.

EP4772473

Anmeldetag

28. August 2024

Veröffentlichung

6. März 2025

Rechtsraum

EP

IPC

C01B39/38, B01J29/80

Abstract

The present invention relates to a single-crystal hollow ZSM-5 zeolite, a catalyst comprising this zeolite, and their preparation methods and uses. The particle of said single-crystal hollow ZSM-5 zeolite has a single-crystal structure, an average crystal grain size of 0.8-3.5 µm, and has a double-layered cavity structure nested inside and out, wherein an inner-layered cavity is at least partially enclosed by a first wall layer of zeolite, and an outer-layered cavity is completely enclosed by a second wall layer of zeolite, and on the second wall layer of zeolite there is an epitaxially grown nano-rod shell layer. The single-crystal hollow ZSM-5 zeolite of the present invention can be used in deep catalytic cracking reaction of macromolecule, allowing to obtain higher yields of low-carbon olefins and BTX, as well as a higher ethylene/propylene ratio.

Anmelder

Firmen

China Petroleum & Chemical Corporation
Sinopec Research Institute of Petroleum Processing Co., Ltd.

Land

🇨🇳 China