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Ultrasound‐assisted Cinnamaldehyde Hydrogenation to Cinnamyl Alcohol at Atmospheric Pressure over Ru‐B Amorphous Catalyst
Author(s) -
Li Hui,
Ma ChunJing,
Li HeXing
Publication year - 2006
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.200690118
Subject(s) - cinnamyl alcohol , cinnamaldehyde , chemistry , catalysis , selectivity , amorphous solid , alcohol , x ray photoelectron spectroscopy , atmospheric pressure , irradiation , sonication , nuclear chemistry , organic chemistry , chemical engineering , chromatography , oceanography , physics , nuclear physics , engineering , geology
The ultrafine Ru‐B amorphous alloy catalyst was prepared by chemical reduction with KBH 4 . During liquid phase hydrogenation of cinnamaldehyde at atmospheric pressure, the Ru‐B catalyst prepared exhibited excellent selectivity to cinnamyl alcohol. When the hydrogenation was performed with ultrasonic irradiation, the reaction rate could be greatly enhanced while the selectivity to cinnamyl alcohol remained almost unchanged. The hydrogenation rate was increased with the increase of either the ultrasonic frequency or the irradiation time. According to various characterizations, such as XRD, XPS, TEM, BET and ICP, the effect of ultrasonic irradiation on the structural and electronic characteristics of Ru‐B catalyst was studied briefly. Meanwhile, the promotion effect of ultrasonication on the catalytic performance was also discussed based on the selective hydrogenation of cinnamaldehyde to cinnamyl alcohol.