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Effects of reaction conditions on catalytic hydroconversion of phenethoxybenzene over bifunctional Ni/Hβ
Author(s) -
Zhou Xiao,
Wei XianYong,
Ma YuMiao,
Zong ZhiMin
Publication year - 2018
Publication title -
asia‐pacific journal of chemical engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.348
H-Index - 35
eISSN - 1932-2143
pISSN - 1932-2135
DOI - 10.1002/apj.2228
Subject(s) - catalysis , bifunctional , chemistry , cleavage (geology) , benzene , bond cleavage , dehydration , nickel , medicinal chemistry , metal , organic chemistry , materials science , biochemistry , fracture (geology) , composite material
An active Ni/Hβ catalyst was successfully prepared by decomposing nickel carbonyl to dispersed metallic Ni onto Hβ support. Phenethoxybenzene (POB) was used as a lignin model compound to evaluate the catalytic activity. The effects of reaction temperature, initial H 2 pressure (IHP), and reaction time on the catalytic hydroconversion (CHC) of POB was studied. The results show that Ni/Hβ effectively catalyzed POB convert to monocyclic cyclanes via direct hydrogenation of benzene ring (BR) in POB, the cleavage of C‐O bridged bond induced by H + addition, dehydration, and H − abstraction under higher IHPs. Alternatively, the CHC of POB proceeds preferentially via direct cleavage of C–O bridged bond induced by H + addition, followed by BR hydrogenation, dehydration, and H − abstraction under lower IHP. Bicyclic cyclanes were produced via rearrangement reactions, which proceed more easily either at higher temperatures or under lower IHPs.