Influence of pretreatment and metal cation modification of H-MOR zeolite on performance of DME carbonylation

ZHAO Na; NIU Junyang; LIU Yahua; TAN Yisheng; LI Xingang

doi:10.11949/j.issn.0438-1157.20150882

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Influence of pretreatment and metal cation modification of H-MOR zeolite on performance of DME carbonylation

更新时间：2025-12-10

- Influence of pretreatment and metal cation modification of H-MOR zeolite on performance of DME carbonylation
- CIESC Journal Issue 9, Pages: 3504-3510(2015)
- 作者机构：
  
  1. 天津大学化工学院, 天津化学化工协同创新中心,天津,300072
  2. 中国科学院山西煤炭化学研究所, 煤转化国家重点实验室,山西,太原,030001
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20150882
  CLC： 643TQ032.41
- Online First：05 September 2015，
  
  Published：05 September 2015
- 稿件说明：
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ZHAO Na, NIU Junyang, LIU Yahua, et al. Influence of pretreatment and metal cation modification of H-MOR zeolite on performance of DME carbonylation[J]. CIESC Journal, 2015, (9): 3504-3510.
DOI：

ZHAO Na, NIU Junyang, LIU Yahua, et al. Influence of pretreatment and metal cation modification of H-MOR zeolite on performance of DME carbonylation[J]. CIESC Journal, 2015, (9): 3504-3510. DOI： 10.11949/j.issn.0438-1157.20150882.

摘要

详细了考察不同预处理条件及反应温度对丝光沸石(H-MOR)分子筛二甲醚(DME)羰基化制取醋酸甲酯(MA)的催化活性和稳定性的影响。研究结果表明

在氮气气氛中500℃预处理2 h、反应温度为180℃时H-MOR催化剂的DME转化率最高

可达20.5%。虽然提高反应温度可以进一步提高催化剂的DME转化率

但易产生积炭

快速失活。此外

还考察了金属离子改性对H-MOR催化剂DME羰基化活性的影响。采用离子交换法制备了Cu、Ni、Fe和Co等金属离子交换的H-MOR催化剂

活性测试结果表明:IE-Cu催化剂活性最好

DME转化率为36.9%;IE-Ni催化剂的活性最稳定

DME转化率稳定在24.5%。还原温度对IE-Cu催化剂DME羰基化活性有重要影响

450℃还原后的IE-Cu催化剂活性要明显高于300℃还原的IE-Cu。

Abstract

The influence of the pretreatment conditions and reaction temperature of the H-MOR zeolite on the performance of DME carbonylation was investigated. It was found that after the sample was pretreated in N2 flow at 500℃ for 2 h

the DME conversion reached 20.5% at 180℃. The DME conversion of the H-MOR increased with increasing reaction temperature

but the serious coking at higher temperatures resulted in the deactivation of the catalyst. Additionally

Ni and Co cations were used to modify the H-MOR zeolite

and to explore the influence of metal cation modification of the H-MOR zeolite on the performance of DME carbonylation. The catalytic tests showed that the IE-Cu catalyst was more active with the DME conversion of 36.9%

while the IE-Ni catalyst was more stable with the DME conversion of around 24.5% at the whole reaction period. Moreover

the influence of reduction temperature of the IE-Cu zeolite on the performance of DME carbonylation was also studied. The catalytic activity of the pre-reduced IE-Cu at 450℃was higher than that pre-reduced at 300℃.

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