Regeneration of zeolite catalyst for dimethyl ether carbonylation

LIU Yahua; LI Yang; WANG Ke; YE Qiuyun; LIU Peng

doi:10.11949/j.issn.0438-1157.20170489

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Regeneration of zeolite catalyst for dimethyl ether carbonylation

更新时间：2025-12-10

- Regeneration of zeolite catalyst for dimethyl ether carbonylation
- CIESC Journal Issue 10, Pages: 3816-3822(2017)
- 作者机构：
  
  西南化工研究设计院有限公司, 国家碳一化学工程技术研究中心, 工业排放气综合利用国家重点实验室,四川,成都,610225
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20170489
  CLC： 643.3
- Online First：05 October 2017，
  
  Published：05 October 2017
- 稿件说明：
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LIU Yahua, LI Yang, WANG Ke, et al. Regeneration of zeolite catalyst for dimethyl ether carbonylation[J]. CIESC Journal, 2017, (10): 3816-3822.
DOI：

LIU Yahua, LI Yang, WANG Ke, et al. Regeneration of zeolite catalyst for dimethyl ether carbonylation[J]. CIESC Journal, 2017, (10): 3816-3822. DOI： 10.11949/j.issn.0438-1157.20170489.

摘要

以水热合成的H-MOR分子筛催化剂，通过对二甲醚羰基化反应失活后催化剂进行再生，考察了不同再生气体、再生温度、O2体积分数、烧炭升温速率等条件，烧炭后催化剂上二甲醚羰基化活性性能。TPO表征结果表明：反应后H-MOR分子筛上有两种不同性质的积炭。积炭催化剂在3%（体积） O2/N2气氛中，从室温以2℃·min-1升温至320℃恒温一段时间，然后以相同速率升温至550℃进行烧炭，再生催化剂活性几乎完全恢复。NH3-TPD和BET表征结果表明，再生催化剂活性得以恢复是因为优化了烧炭方案，分子筛表面积炭能够被烧除干净同时分子筛孔道不被破坏。

Abstract

The H-MOR zeolite catalysts were prepared by hydrothermal synthesis.An inactivated catalyst which was used in dimthyl ether carbonylaiton was regenerated.The effects of gas

coke-burning temperature

O2 volume fraction and heating rate on the coke-burning process were investigated.The results of TPO and XRD analysis showed that there was different property coke on the inactivated catalyst.In the optimum conditions for the coke-burning of the inactivated catalyst

temperature 550℃

heating rate of 2℃·min-1 and O2 volume fraction of 3%

the catalyst activity was almost completely restored.The fresh and regenerated catalysts were characterized by means of NH3-TPD and N2 adsorption-desorption.The results showed that the coke was removed cleanly and channels were protected in the optimum condition.

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