Liquid-phase dehydration of 1-phenylethanol over mordenite-like zeolites: Influence of Si/Al ratio
作者： Nicolás M. Bertero , Carlos R. Apesteguía , Alberto J. Marchi
DOI: 10.1016/J.CATCOM.2008.09.002
关键词: Ether 、 Inorganic chemistry 、 Selectivity 、 Styrene 、 Catalysis 、 Solvent 、 Mordenite 、 Dehydration 、 Chemistry 、 Cyclohexane
摘要: Abstract The liquid-phase dehydration of 1-phenylethanol over mordenite-like zeolites, with different Si/Al ratios, was studied at 363 K using cyclohexane as solvent. It determined that catalyst activity and selectivity greatly depended on the ratio. non-dealuminated mordenite showed lowest activity, dehydrating mainly to α-methylbenzyl ether via an intermolecular mechanism. Instead, intramolecular into styrene observed dealuminated samples. Changes in catalytic performance ratio explained basis of: (1) acid site density; (2) relative amount strong sites respect weak ones; (3) accessibility sites.
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