催化学报 ›› 2012, Vol. 33 ›› Issue (8): 1383-1388.DOI: 10.3724/SP.J.1088.2012.20309

• 研究论文 • 上一篇    下一篇

蒸气相法 ZSM-5 分子筛的合成及其负载的 Mo 催化剂在甲烷芳构化中的应用

王迪勇, 王金渠, 杨建华*, 鲁金明, 殷德宏, 张艳   

  1. 大连理工大学精细化工国家重点实验室, 吸附与无机膜研究所, 辽宁大连 116012
  • 收稿日期:2012-03-06 修回日期:2012-05-20 出版日期:2012-08-01 发布日期:2012-08-01

Synthesis of ZSM-5 Zeolite by Vapor-Phase Method and Performance of Its Mo-Based Catalyst for Methane Dehydroaromatization

WANG Diyong, WANG Jinqu , YANG Jianhua*, LU Jinming, YIN Dehong, ZHANG Yan   

  1. Institute of Adsorption and Inorganic Membrane, State Key Laboratory of Fine Chemicals, Dalian University of Technology, Dalian 116012, Liaoning, China
  • Received:2012-03-06 Revised:2012-05-20 Online:2012-08-01 Published:2012-08-01

摘要: 采用蒸气相法使无定形凝胶在水蒸气中结晶形成 ZSM-5 分子筛, 通过 X 射线衍射、红外光谱、热重、扫描电镜以及能量色散型 X 射线荧光分析对合成的分子筛进行了表征. 结果表明, 蒸气相法比水热法更易合成出粒径均匀、形貌规则的小颗粒分子筛 (粒径为 150~250 nm), 将其负载 Mo 后用于甲烷无氧芳构化反应中, 表现出更好的催化性能, 初期甲烷转化率达 17.5%, 同时表现出更高的稳定性和容炭能力.

关键词: 蒸气相法, ZSM-5 分子筛, 甲烷, 钼基催化剂, 无氧脱氢芳构化

Abstract: ZSM-5 zeolite was prepared from the amorphous SiO2:Al2O3:TPAOH:Na2O system in H2O vapor phase. The obtained samples were characterized by X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, etc. Compared with the hydrothermal method, using the vapor-phase method could easily synthesize ZSM-5 zeolite with uniform particle size. The particle size was between 150 and 250 nm. It also showed a better catalytic performance with CH4 conversion as high as 17.5% and better life time.

Key words: vapor-phase method, ZSM-5 zeolite, methane, molybdenum-based catalyst, dehydroaromatization