公开(公告)号：US20230347330A1

公开(公告)日：2023-11-02

申请号：US18002322

申请日：2021-06-24

申请人： CHINA PETROLEUM & CHEMICAL CORPORATION ,  RESEARCH INSTITUTE OF PETROLEUM PROCESSING, SINOPEC

发明人： Lei HAN ,  Wei LIN ,  Peng WANG ,  Haitao SONG ,  Lixia WANG ,  Xiang ZHOU ,  Liuzhou ZHAO ,  Xueguo ZHENG

IPC分类号： B01J35/00 ,  B01J35/10 ,  B01J35/02 ,  B01J29/70 ,  B01J29/40 ,  C01B39/38 ,  B01J37/04 ,  B01J37/08

CPC分类号： B01J35/0006 ,  B01J35/1019 ,  B01J35/1023 ,  B01J35/1061 ,  B01J35/023 ,  B01J29/7007 ,  B01J29/40 ,  C01B39/38 ,  B01J37/04 ,  B01J37/08 ,  B01J2229/62 ,  B01J2229/30

摘要： A ZSM-5/β core-shell molecular sieve has a core composed of at least two crystal grains of ZSM-5 molecular sieve and a shell composed of a plurality of crystal grains of β molecular sieve. The ZSM-5 molecular sieve grains has an average grain size of 0.05-15 μm. The core-shell molecular sieve has a shell coverage of 50-100%, a shell thickness of 10-2000 nm, and an average grain size of the β molecular sieve grains in the shell of 10-500 nm. A ratio of a height of a diffraction peak at 2θ=22.4° to a height of a diffraction peak at 2θ=23.1° in an X-ray diffraction pattern of the ZSM-5/β core-shell molecular sieve is 0.1-10:1.