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Efficient Hydrodeoxygenation of Aliphatic Ketones over an Alkali‐Treated Ni/HZSM‐5 Catalyst
Author(s) -
Kong Xiangjin,
Lai Weichi,
Tian Jun,
Li Yang,
Yan Xilong,
Chen Ligong
Publication year - 2013
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.201200824
Subject(s) - catalysis , hydrodeoxygenation , aldol condensation , chemistry , cyclohexanone , mesoporous material , alkali metal , organic chemistry , substrate (aquarium) , condensation , boiling , selectivity , oceanography , physics , thermodynamics , geology
Cyclohexanone was chosen as a model substrate to evaluate certain catalysts for the hydrodeoxygenation of aliphatic ketones in a fixed‐bed reactor. The experimental results indicated that alkali‐treated Ni/HZSM‐5 exhibited excellent performance for this reaction. Two aspects of the catalyst are enhanced by alkaline treatment; the amount of strong acid sites on the catalyst is sharply reduced, and also a large number of mesopores are generated in the catalyst. The decrease of strong acid sites suppresses the formation of low‐boiling products and aldol‐condensation side products, while the mesopores improved hydrogenation and dehydration performances of the catalyst. These two aspects also promoted the catalyst’s excellent time‐on‐stream performance. Additionally, generality of the catalyst is proved; most of the selected carbonyl compounds can be hydrodeoxygenated to the corresponding alkanes with selectivities of more than 97.0 %.