Spatial confinement effects of cage-type SAPO molecular sieves on product distribution and coke formation in methanol-to-olefin reaction

被引：122

作者：

Chen, Jingrun ^{[1
,2
]}

Li, Jinzhe ^{[1
]}

Wei, Yingxu ^{[1
]}

Yuan, Cuiyu ^{[1
,2
]}

Li, Bing ^{[1
,2
]}

Xu, Shutao ^{[1
]}

Zhou, You ^{[1
,2
]}

Wang, Jinbang ^{[1
]}

Zhang, Mozhi ^{[1
,2
]}

Liu, Zhongmin ^{[1
]}

机构：

[1] Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Natl Engn Lab Methanol Olefins, Dalian 116023, Peoples R China

[2] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

CATALYSIS COMMUNICATIONS | 2014年 / 46卷

基金：

中国国家自然科学基金;

关键词：

Methanol to olefin; Silicoaluminophosphate; Deactivation; Adamantane hydrocarbons; Spatial confinement; ZEOLITE DEACTIVATION; REACTION CENTERS; CONVERSION; HYDROCARBONS; CATALYSIS; SELECTIVITY; HSAPO-34; SIZE; MECHANISM;

D O I：

10.1016/j.catcom.2013.11.016

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Three kinds of 8-membered ring silicoaluminophosphate (SAPO) molecular sieves with different cage structures, SAPO-34, SAPO-18 and SAPO-35, were employed in methanol-to-olefin (MTO) reaction. The main products over SAPO-34 and SAPO-18 were propene and butenes, whereas ethene and propene especially ethene were predominantly generated over SAPO-35. Coke species formation greatly depended on reaction temperature and varied systematically with cage size. The differences in production distribution and generated coke species in the MTO reaction suggest great spatial confinement effects imposed by cage structure of SAPO catalysts. (C) 2013 Elsevier B.V. All rights reserved.

引用

页码：36 / 40

页数：5

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