Synthesis of Hierarchical HZSM-5 Microspheres without Second Template and Their Application in Methane Dehydroaromatization

Hierarchical ZSM-5(ZSM-5-HW) microspheres were synthesized by controlling the hydrothermal conditions without any secondary template. The ZSM-5-HW microspheres with a diameter range of 10-15 mu m were constructed by many rod-shaped crystals. N sub(2) adsorption at -196 degree C revealed that the ZSM...

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Published inChinese journal of catalysis Vol. 32; no. 2; pp. 362 - 367
Main Authors Yang, J, Yu, S, Hu, H, Chu, N, Lu, J, Yin, D, Wang, J
Format Journal Article
LanguageChinese
Published 01.02.2011
Subjects
Benzene
Catalysts
Conversion
Crystals
Methane
Microspheres
Running
Zeolites
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Summary:Hierarchical ZSM-5(ZSM-5-HW) microspheres were synthesized by controlling the hydrothermal conditions without any secondary template. The ZSM-5-HW microspheres with a diameter range of 10-15 mu m were constructed by many rod-shaped crystals. N sub(2) adsorption at -196 degree C revealed that the ZSM-5-HW zeolite is of both micropore and mesopore structure. The hierarchical Mo/HZSM-5-HW catalyst exhibited higher catalytic activity and stability in methane dehydroaromatization. The initial CH sub(4) conversion and the highest benzene yield were 18.5% and 9.5%, respectively, which are better than that of the conventional Mo/HZSM-5 catalyst. The CH sub(4) conversion and benzene yield was kept at 10.2% and 5.5%, respectively, after running the reaction for 24 h.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0253-9837
DOI:10.3724/SP.J.1088.2011.00937