晶种法制备MWW型沸石分子筛用于甲烷脱氢芳构化反应研究

李卫强; 董新法; 樊栓狮; 郎雪梅; 王燕鸿; 钟鎏盈; 李刚

doi:10.12434/j.issn.2097-2547.20250277

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晶种法制备MWW型沸石分子筛用于甲烷脱氢芳构化反应研究

C1化学与催化转化 | 更新时间：2026-02-02

- 晶种法制备MWW型沸石分子筛用于甲烷脱氢芳构化反应研究
- Study on MWW-type zeolites prepared by seed-assisted method for methane dehydroaromatization
- 低碳化学与化工 2026, 51(1): 32-39.
- 作者机构：
  
  1.华南理工大学化学与化工学院，广东广州 510641
  2.佛山灿石科技有限公司，广东佛山 528311
- 作者简介：
  
  李卫强（2000—），硕士研究生，研究方向为分子筛的合成，E-mail：Lwq228617@163.com。
  李刚（1983—），博士，教授，研究方向为分子筛的合成与应用，E-mail：fegli@scut.edu.cn。
- 基金信息：
  
  中央高校基本科研业务费专项资金(2024ZYGXZR100)
- DOI：10.12434/j.issn.2097-2547.20250277
  中图分类号： TQ426;O643.3
- 收稿：2025-06-17，
  
  修回：2025-07-23，
  
  纸质出版：2026-01-25
- 稿件说明：
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李卫强,董新法,樊栓狮等.晶种法制备MWW型沸石分子筛用于甲烷脱氢芳构化反应研究[J].低碳化学与化工,2026,51(1):32-39.

LI Weiqiang,DONG Xinfa,FAN Shuanshi,et al.Study on MWW-type zeolites prepared by seed-assisted method for methane dehydroaromatization[J].Low-Carbon Chemistry and Chemical Engineering,2026,51(1):32-39.
李卫强,董新法,樊栓狮等.晶种法制备MWW型沸石分子筛用于甲烷脱氢芳构化反应研究[J].低碳化学与化工,2026,51(1):32-39. DOI： 10.12434/j.issn.2097-2547.20250277.

LI Weiqiang,DONG Xinfa,FAN Shuanshi,et al.Study on MWW-type zeolites prepared by seed-assisted method for methane dehydroaromatization[J].Low-Carbon Chemistry and Chemical Engineering,2026,51(1):32-39. DOI： 10.12434/j.issn.2097-2547.20250277.

摘要

甲烷脱氢芳构化（MDA）是非石油路线制备芳烃的重要途径，探讨催化剂的孔道结构对其MDA反应催化性能的影响，在指导高性能催化剂的制备上具有重要意义。通过晶种法合成了MWW型沸石分子筛（MCM-56和MCM-22），采用XRD、TEM、SEM和N

吸/脱附对Mo/MCM-56和Mo/MCM-22催化剂的物相、形貌和孔道结构进行了表征分析，并探究了MWW型沸石分子筛中不同孔道体系对Mo/MCM-56和Mo/MCM-22催化剂的MDA反应催化性能的影响。结果表明，晶种法大幅缩短了沸石分子筛的晶化时间，且MWW型沸石分子筛结构与晶种结构密切相关。在相同条件下（700 ℃、100 kPa）反应9.0 h后，Mo/MCM-22催化剂比Mo/MCM-56催化剂具有更高的芳烃选择性（95%左右）与芳烃产率（7.5%左右）以及更优异的催化稳定性，从而推测Mo/MCM-22催化剂中通过二维MWW沸石纳米片缩合形成的十二元环超笼是MDA反应的主要场所。本研究揭示了MWW型沸石分子筛中不同孔道体系对催化剂的MDA反应催化性能具有重要影响，以期为高产物选择性、高稳定性MDA催化剂的设计提供新思路。

Abstract

Methane dehydroaromatization (MDA) represents a promising non-petroleum route for aromatic production. Exploring the effects of the pore structures of catalysts on their MDA reaction catalytic performances is crucial for developing high-efficiency catalysts. MWW-type zeolites (MCM-56 and MCM-22) were synthesized by seed-assisted method. The phases

morphologies and pore structures of Mo/MCM-56 and Mo/MCM-22 catalysts were characterized by XRD

TEM

SEM

and N

adsorption/desorption. Furthermore

the effects of different pore channel systems of MWW-type zeolites on catalytic performances of Mo/MCM-56 and Mo/MCM-22 catalysts for MDA reaction were investigated. The results show that the seed-assisted method significantly reduces crystallization time of zeolites

and the structures of MWW zeolites are closely related to the structures of seeds. After reacting for 9.0 h under the same conditions (700 °C

100 kPa)

Mo/MCM-22 demonstrates higher aromatic selectivity (around 95%) and aromatic yield (around 7.5%)

and superior catalytic stability compared to Mo/MCM-56. Therefore

it is speculated that the 12-membered ring supercages

formed through condensation of adjacent two-dimensional MWW zeolite nanosheets in Mo/MCM-22 catalyst

serves as the primary sites for MDA reaction. The study reveals that different pore channe

l systems of MWW zeolites have significant effects on the catalytic performance of catalysts for MDA reaction

providing new ideas for designing highly selective and stable MDA catalysts.

关键词

Keywords

references

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