甲醇制芳烃催化剂研究进展

doi:10.16085/j.issn.1000-6613.2016.05.024

化工进展 ›› 2016, Vol. 35 ›› Issue (05): 1433-1439.DOI: 10.16085/j.issn.1000-6613.2016.05.024

甲醇制芳烃催化剂研究进展

汪哲明, 陈希强, 许烽, 肖景娴, 杨为民

中国石油化工股份有限公司上海石油化工研究院, 上海 201208

收稿日期:2015-09-10 修回日期:2015-11-29 出版日期:2016-05-05 发布日期:2016-05-05
通讯作者: 杨为民,教授级高工,博士生导师,从事多孔材料、工业催化剂、催化工艺技术开发及科研管理工作。E-mail yangwm.sshy@sinopec.com。
作者简介:汪哲明(1976-)男,博士,高级工程师,从事石化与煤化工催化剂及技术的研发工作。E-mail wangzm.sshy@sinopec.com。

Advance in the research and development of methanol to aromatic catalysts

WANG Zheming, CHEN Xiqiang, XU Feng, XIAO Jingxian, YANG Weimin

SINOPEC Shanghai Research Institute of Petrochemical and Technology, Shanghai 201208, China

Received:2015-09-10 Revised:2015-11-29 Online:2016-05-05 Published:2016-05-05

摘要/Abstract

摘要： 系统回顾了甲醇制芳烃(MTA)的反应原理、MTA催化剂的活性组分(沸石与脱氢组分)、修饰组分、制备方法以及MTA催化剂反应-失活研究等方面的研究进展。甲醇可通过氢转移与脱氢环化两种途径转化为芳烃,后一途径可获得更高的芳烃选择性。负载具有脱氢功能的Zn组分、低硅铝比的ZSM-5基催化剂为性能优异的MTA催化剂。La、P及Si等组分的修饰可改善MTA催化剂的水热稳定性、提高其芳烃选择性或对二甲苯(PX)选择性。积炭、脱氢组分聚集、还原及分子筛骨架脱Al(或Ga)是导致MTA催化剂失活的重要因素。最后指出,改善催化剂水热稳定性、提高芳烃收率与高附加值芳烃产品的选择性及实现制备过程的绿色化是未来MTA催化剂开发的重要方向。

关键词: 甲醇, 芳烃, 分子筛, 脱氢组分, 失活

Abstract: The research and development advance in the reaction mechanism of methanol to aromatics(MTA), the influence of active components (zeolite, dehydrogenation component), modifiers, the preparation methods and deactivity of the MTA catalyst for both the reaction and regeneration processes, is reviewed in this paper. Methanol is conversed to aromatics by two approaches, hydrogen shift and dehydrogenation-cyclization, and the latter could have high aromatic selectivity. The bi-functional catalysts consisted of ZSM-5 zeolite with low Si/Al ratio and dehydrogenation Zn component, exhibit excellent performance in MTA process. Modification of the MTA catalysts with La, P and Si components could improve their hydrothermal stability and selectivity to aromatics or p-xylene (PX). The deactivation of MTA catalysts during the reaction and regeneration processes mainly results from carbon deposition, aggregation and reduction of the dehydrogenation components and hydrothermal removal Al or Ga from the molecular sieve framework. In future, the research and development of the MTA catalysts should be directed to improving hydrothermal stability, increasing the selectivity for high added-value aromatics and developing green preparation process for the catalysts.

Key words: methanol, aromatics, molecular sieve, dehydrogenation component, deactivation

中图分类号:

O643.3

汪哲明, 陈希强, 许烽, 肖景娴, 杨为民. 甲醇制芳烃催化剂研究进展[J]. 化工进展, 2016, 35(05): 1433-1439.

WANG Zheming, CHEN Xiqiang, XU Feng, XIAO Jingxian, YANG Weimin. Advance in the research and development of methanol to aromatic catalysts[J]. Chemical Industry and Engineering Progree, 2016, 35(05): 1433-1439.

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甲醇制芳烃催化剂研究进展

Advance in the research and development of methanol to aromatic catalysts

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