NDLI: A hollow Mo/HZSM-5 zeolite capsule catalyst: preparation and enhanced catalytic properties in methane dehydroaromatization

Content Provider	Royal Society of Chemistry (RSC)
Author	Zhu, Pengfei Tsubaki, Noritatsu Yoneyama, Yoshiharu Yang, Guohui Zhang, Peipei Fan, Ronggang Sun, Jian
Copyright Year	2017
Abstract	A hollow Silicalite-1-HZSM-5 zeolite capsule structure (H-S-Z) embedded with Mo nanoparticles was designed and prepared. The H-S-Z was obtained by a dual-layer hydrothermal synthesis method using activated carbon (AC) as a hard template via self-assembly combined hydrothermal crystallization. One layer of Silicalite-1 zeolite shell was first synthesized on the AC core under neutral-like synthesis conditions. Then, a HZSM-5 zeolite shell was synthesized on this Silicalite-1 zeolite shell enveloping the AC core, followed by calcination in air to remove the core AC. After being loaded with Mo, this hollow zeolite capsule catalyst was tested in a methane dehydroaromatization (MDA) reaction. Compared with the conventional solid catalyst, the Mo/H-S-Z catalyst significantly improved the methane conversion, formation rate of the benzene product, and catalytic stability, and inhibited the carbon deposition, due to the accelerated mass-transfer rate in the hollow structure. Furthermore, the catalyst deactivation derived from the side reactions such as poly-aromatics or coke formation at the inner zeolite could be eliminated.
Starting Page	8599
Ending Page	8607
Page Count	9
File Format	HTM / HTML PDF
ISSN	20507488
Volume Number	5
Issue Number	18
Journal	Journal of Materials Chemistry A
DOI	10.1039/c7ta02345f
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	MDA Mo Zeolite Hydrothermal synthesis Activated carbon Self-assembly Calcination Methane Benzene Carbon
Content Type	Text
Resource Type	Article
Subject	Chemistry Renewable Energy, Sustainability and the Environment Materials Science

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A hollow Mo/HZSM-5 zeolite capsule catalyst: preparation and enhanced catalytic properties in methane dehydroaromatization

Hydrothermal Post-synthesis of HZSM-5 Zeolite to Enhance the Coke-resistance of Mo/HZSM-5 Catalyst for Methane Dehydroaromatization

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A hollow Mo/HZSM-5 zeolite capsule catalyst: preparation and enhanced catalytic properties in methane dehydroaromatization

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A hollow Mo/HZSM-5 zeolite capsule catalyst: preparation and enhanced catalytic properties in methane dehydroaromatization

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