石油化工2011，Vol.40Issue(7)：795-799,5.
一步法合成二甲醚催化剂失活的研究进展
Progress in Catalyst Deactivation Study for Direct Synthesis of Dimethyl Ether
张海鹏 1李伟 2肖文德1
作者信息
- 1. 华东理工大学化学工程联合重点实验室,上海200237
- 2. 中国石油大学(华东)化学化工学院,山东东营257061
- 折叠
摘要
Abstract
The causes and solutions of the catalyst deactivation for the direct synthesis of dimethyl ether from syngas were reviewed. Deactivation of either component in the composite catalysts could lead to the catalyst deactivation. Microimpurities, namely S, Cl, Fe and Ni, could cause the catalyst deactivation, which could be prevented by purification of the raw gas and using stainless steel equipments. Sintering of the Cu in the catalysts was an important problem which led to the catalyst deactivation. The catalyst stability could be enhanced by controlling the reaction temperature, removing the water generated by the reaction and modifying the catalyst preparation methods. Transfer and loss of the active components, and the coking on the catalysts were also the causes of the catalyst deactivation. The deactivation of methanol dehydration components was mainly caused by the coking and the catalyst structure damaging. Life of the catalysts could be prolonged by improving the resistances of the catalysts to the carbon deposition and water.关键词
一步法合成二甲醚/催化剂失活/合成气/甲醇Key words
direct synthesis of dimethyl ether/catalyst deactivation/syngas/methanol分类
化学工程引用本文复制引用
张海鹏,李伟,肖文德..一步法合成二甲醚催化剂失活的研究进展[J].石油化工,2011,40(7):795-799,5.
