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Benzene alkylation with propylene was studied in the gas phase using a catalytic membrane reactor and a fixed-bed reactor in the temperature range of 200-300 °C and with a weight hourly space velocity (WHSV) of 51 h-1. β-zeolite was prepared by hydrothermal synthesis using silica, aluminum metal and TEAOH as precursors. The membrane's XRD patterns showed good crystallinity for the β-zeolite film, while scanning electron microscopy SEM results indicated that its random polycrystalline film was approximately 1 μm thick. The powders' specific area was determined to be 400 m²×g-1 by N₂ adsorption/desorption, and the TPD results indicated an overall acidity of 3.4 mmol NH₃×g-1. Relative to the powdered catalyst, the catalytic membrane showed good activity and product selectivity for cumene.

作者:Miguel, Torres-Rodríguez;Mirella, Gutiérrez-Arzaluz;Violeta, Mugica-álvarez;Julia, Aguilar-Pliego;Sibele, Pergher

来源:Materials (Basel, Switzerland) 2012 年 5卷 5期

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作者:
Miguel, Torres-Rodríguez;Mirella, Gutiérrez-Arzaluz;Violeta, Mugica-álvarez;Julia, Aguilar-Pliego;Sibele, Pergher
来源:
Materials (Basel, Switzerland) 2012 年 5卷 5期
标签:
acid catalysis alkylation zeolite membrane β-zeolite
Benzene alkylation with propylene was studied in the gas phase using a catalytic membrane reactor and a fixed-bed reactor in the temperature range of 200-300 °C and with a weight hourly space velocity (WHSV) of 51 h-1. β-zeolite was prepared by hydrothermal synthesis using silica, aluminum metal and TEAOH as precursors. The membrane's XRD patterns showed good crystallinity for the β-zeolite film, while scanning electron microscopy SEM results indicated that its random polycrystalline film was approximately 1 μm thick. The powders' specific area was determined to be 400 m²×g-1 by N₂ adsorption/desorption, and the TPD results indicated an overall acidity of 3.4 mmol NH₃×g-1. Relative to the powdered catalyst, the catalytic membrane showed good activity and product selectivity for cumene.