Deactivation of HZSM-5 catalyst in methanol to gasoline

ZHANG Xiangjing; MA Renjuan; SUN Ruiyu; LIU Yumin

doi:10.11949/j.issn.0438-1157.20150891

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Deactivation of HZSM-5 catalyst in methanol to gasoline

更新时间：2025-12-10

- Deactivation of HZSM-5 catalyst in methanol to gasoline
- CIESC Journal Issue 9, Pages: 3483-3489(2015)
- 作者机构：
  
  河北科技大学化学与制药工程学院,河北,石家庄,050018
- 作者简介：
- 基金信息：
- DOI：10.11949/j.issn.0438-1157.20150891
  CLC： Q221.21
- Online First：05 September 2015，
  
  Published：05 September 2015
- 稿件说明：
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ZHANG Xiangjing, MA Renjuan, SUN Ruiyu, et al. Deactivation of HZSM-5 catalyst in methanol to gasoline[J]. CIESC Journal, 2015, (9): 3483-3489.
DOI：

ZHANG Xiangjing, MA Renjuan, SUN Ruiyu, et al. Deactivation of HZSM-5 catalyst in methanol to gasoline[J]. CIESC Journal, 2015, (9): 3483-3489. DOI： 10.11949/j.issn.0438-1157.20150891.

摘要

在固定床不锈钢反应器中进行了HZSM-5分子筛催化甲醇制汽油(MTG)反应的催化性能和失活实验。采用热重、X射线衍射、FT-IR、低温氮吸附-脱附、色谱-质谱联用仪等方法对催化剂进行了表征。结果表明

在反应进行到336 h时

甲醇转化率为40%

汽油收率低至12.6%

催化剂严重失活

但在700℃有氧再生后活性恢复

且保持了完整的MFI结构。积炭是催化剂失活的主要原因

大部分积炭沉积在分子筛微孔中

积炭物种主要是带有双键的聚合态化合物和稠环芳烃。

Abstract

The catalytic performances and the main deactivation mode of HZSM-5 zeolite were investigated by methanol to gasoline (MTG) reaction in a stainless-steel fixed bed reactor. The catalyst was characterized by means of techniques such as TGA-DTA

XRD

FT-IR

N2 adsorption-desorption and GC-MS. The results showed that the methanol conversion was 40% and the gasoline yield could drop to 12.6% after 336 h for the reaction

resulting in the serious deactivation of HZSM-5 catalyst. However

the regenerated catalyst at 700℃ in the air had high activity and the MFI framework structure. It was found that the coke

which deposited mainly on micropores of HZSM-5

was the main reason for catalyst deactivation. The main components of coke deposits were polymer with double bond or/and polycyclic aromatic hydrocarbon.

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