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A Robust Ru/ZSM‐5 Hydrogenation Catalyst: Insights into the Resistances to Ruthenium Aggregation and Carbon Deposition
Author(s) -
Zhang Bin,
Wu Qifan,
Zhang Chao,
Su Xinluona,
Shi Ruhui,
Lin Weiwei,
Li Yan,
Zhao Fengyu
Publication year - 2017
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201700664
Subject(s) - ruthenium , levulinic acid , leaching (pedology) , catalysis , carbon fibers , chemistry , deposition (geology) , metal , chemical engineering , inorganic chemistry , materials science , organic chemistry , composite number , geology , paleontology , sediment , engineering , composite material , soil science , soil water
A long‐life topic in the field of heterogeneous catalysis has been to develop supported catalysts that are stable against the aggregation of active metal and carbon deposition. Herein, we report a highly stable Ru/ZSM‐5 catalyst for the hydrogenation of levulinic acid in water, which can be recycled at least 10 times without apparent loss of activity (conv. >95 %, yield >85 %). The influences of types of Al species, structure of support, Ru sizes, Ru leaching, and carbon deposition, etc. on activity and stability were discussed in detail. It was confirmed that the tetrahedral‐coordinated framework Al in ZSM‐5 contributed to the favorable metal–support interaction, and thus suppressed the aggregation and leaching of ruthenium during recycling. Besides, the suitable pore volume and channel network connectivity successfully prevent from deposition of carbonaceous residues.