Studies on styrene selective oxidation to benzaldehyde catalyzed by Cr-ZSM-5: Reaction parameters effects and kinetics
Studies on styrene selective oxidation to benzaldehyde catalyzed by Cr-ZSM-5: Reaction parameters effects and kinetics
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DOI：
10.1016/j.apcata.2011.04.021
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发表时间：
2011-06
影响因子：
5.5
通讯作者：
C. Saux;L. Pierella
中科院分区：
文献类型：
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作者：
C. Saux;L. Pierella
以过氧化氢为氧化剂，通过对铬、钴、铁、锌、锰、铜等过渡金属离子的探针筛选出Cr-ZSM-5分子筛，研究了该分子筛催化苯乙烯选择氧化制苯甲醛的反应。考察了反应时间、催化剂用量、苯乙烯/过氧化氢摩尔比、溶剂性质和反应温度等因素对反应的影响，采用初速率法确定了苯乙烯和氧化剂浓度对反应的一级动力学方程。表观活化能为14.54 kJ/mol。
The selective styrene oxidation to benzaldehyde was studied over Cr-ZSM-5 zeolite which was selected after probed a series of transition metal cations (chromium, cobalt, iron, zinc, manganese and cupper) using hydrogen peroxide as oxidant agent. The effects of various reaction parameters such as reaction time, catalyst mass, styrene/hydrogen peroxide molar ratio, solvent nature and reaction temperature effect were evaluated over it. Using the initial rate method, a first order with respect to styrene and oxidant concentrations was determined. An apparent activation energy of 14.54 kJ/mol was obtained.