Kinetics of hydrogenation of cinnamaldehyde over alumina supported bimetallic Pd-Pt and Pd-Rh catalysts

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作者：
Mahmoud, SS
Asfour, HM
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来源：
INDIAN JOURNAL OF CHEMISTRY SECTION A-INORGANIC BIO-INORGANIC PHYSICAL THEORETICAL & ANALYTICAL CHEMISTRY | 1996年 / 35卷 / 07期
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O6 [化学];
学科分类号：
0703 ;
摘要：
Kinetics of hydrogenation of cinnamaldehyde over Pd50Pt50 and Pd40Rh60 supported on Al2O3 have been studied. GC analysis and UV/vis spectrophotometric measurements have been used to identify the products and determine their concentrations. The products of this reaction, 3-phenylpropanal, 3-phenylpropanol and propylbenzene, are produced consecutively. The rate constants of the first step of this reaction over Pd50Pt50/Al2O3 and Pd40Rh60/Al2O3 are 1.88 X 10(-2) M(-1.5) s(-1) g(-1) (metal) and 2.46 X 10(-2) M(-1.5) s(-1) g(-1) (metal), respectively. The reaction order is 1 with respect to cinnamaldehyde and 1.5 with respect to hydrogen. The temperature variations in the range of 27-41 degrees C have no significant effect on the reaction rates of both catalysts.
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页码：594 / 597
页数：4
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