Citation: Qiuyan Zhu, Yeqing Wang, Lingxiang Wang, Zhiyuan Yang, Liang Wang, Xiangju Meng, Feng-Shou Xiao. Solvent-free crystallization of ZSM-5 zeolite on SiC foam as a monolith catalyst for biofuel upgrading[J]. Chinese Journal of Catalysis, ;2020, 41(7): 1118-1124. doi: 10.1016/S1872-2067(20)63550-1 shu

Solvent-free crystallization of ZSM-5 zeolite on SiC foam as a monolith catalyst for biofuel upgrading

a Key Laboratory of Applied Chemistry of Zhejiang Province, Department of Chemistry, Zhejiang University, Hangzhou 310028, Zhejiang, China;
b Key Laboratory of Biomass Chemical Engineering of Ministry of Education, College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310028, Zhejiang, China

Received Date: 29 September 2019

Fund Project: This work was supported by the National Key Research and Development Program of China (2018YFD1000806-01), National Natural Science Foundation of China (21822203, 91645105, 91634201), Natural Science Foundation of Zhejiang Province (LR18B030002), and the funding of central universities.

Conventional synthesis of monolith-supported zeolite catalysts is based on a hydrothermal strategy. Here, we report a solvent-free crystallization process to coat ZSM-5 zeolite crystals on a monolithic SiC foam with a honeycomb structure (ZSM-5/SiC). Characterizations of the ZSM-5/SiC by scanning electron microscopy, N₂ sorption, and X-ray diffraction indicate that the zeolite sheath has been ideally coated on the surface of the SiC foam with high purity and crystallinity. Fixing Pd nanoparticles within the ZSM-5 zeolite crystals delivers a bifunctional Pd@ZSM-5/SiC catalyst, which exhibits high activity and selectivity toward diesel range paraffins in the hydrodeoxygenation of methyl oleate, a model molecule for biofuel. In comparison to the powder Pd@ZSM-5, the Pd@ZSM-5/SiC monolith catalyst shows more efficiency, which is attributed to the fast mass transfer and high heat conductivity on the honeycomb SiC structure. The durability test indicates that the Pd@ZSM-5/SiC catalyst is stable under the reaction and high-temperature regeneration conditions.
- Zeolite,
- Pd@ZSM-5/SiC,
- Monolith catalyst,
- SiC,
- Solvent-free
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