乙醇脱水反应的动力学研究  

Reaction Kinetic Study on Ethanol Dehydration

作　　者：金永明[1] 肖文德[1] 

机构地区：[1]华东理工大学联合反应工程研究所,上海200237

出　　处：《广东化工》2007年第5期10-13,共4页Guangdong Chemical Industry

摘　　要：在管式固定床反应器中,采用改性的分子筛催化剂,在温度195～220℃、乙醇浓度30～70 wt%、乙醇液时空速0.08～0.17 mol/g-cat./h的范围内,对乙醇脱水反应的本征动力学进行了研究。动力学研究结果表明,在实验条件范围内,乙醇脱水生成乙烯和乙醚的反应属于平行反应,符合Langmuir-Hinshelwood机理模型,表面反应为速率控制步骤。Kinetics of ethanol dehydration to ethylene and diethyl ether on zeolite in a tube fixed bed reactor had been studied. The kinetic date were taken under the condition of 195～220℃ temperature, 30～70 wt% ethanol concentration and 0.08～0.17 mol/g-cat./h ethanol LHSV. A reaction modle was established, in which the surface reaction being the rate determining step and Langmuir-Hinshelwood type mechanism model being the most ideal model for the ethanol dehydration reaction. Ethane and ether produced by ethanol dehydration was refered as parallel reaction.

关 键 词：乙醇 脱水 分子筛催化剂 动力学 L-H机理 

分 类 号：TQ032[化学工程]