Liquid-phase dehydration of 1-phenylethanol over HZSM-5: Kinetic modeling
作者： Nicolás M. Bertero , Carlos R. Apesteguía , Alberto J. Marchi
DOI: 10.1016/J.CATCOM.2009.02.018
关键词: Thermodynamics 、 Solvent 、 Dehydration 、 Liquid phase 、 Catalysis 、 Styrene 、 Zeolite 、 Kinetic energy 、 Chemistry 、 Cyclohexane 、 Organic chemistry
摘要: Abstract The liquid-phase dehydration of 1-phenylethanol over HZSM-5 zeolite (Si/Al = 20), at 353–373 K and using cyclohexane as solvent, was studied. Varying initial reactant concentration, a negative order respect to determined. In all cases, resulted highly selective styrene. Experimental data were fitted LHHW-like kinetic models. Both physical statistical criteria applied discriminate the best heterogeneous model. most satisfactory fitting obtained assuming that styrene is formed from interacting simultaneously with two active sites. This mechanism explains 1-phenylethanol.
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