Alkylation of Benzene with Propylene in a Flow-Through Membrane Reactor and Fixed-Bed Reactor: Preliminary Results

Materials

Miguel Torres-Rodríguez¹  Mirella Gutiérrez-Arzaluz¹  Violeta Mugica-Álvarez¹  Julia Aguilar-Pliego¹ 

[1] Área de Química Aplicada, Universidad Autónoma Metropolitana, Azcapotzalco. Av. San Pablo 180, Col. Reynosa Tamaulipas, Azcapotzalco D.F. 02200, Mexico; E-Mails:

关键词: β-zeolite;    zeolite membrane;    alkylation;    acid catalysis;   

DOI  :  10.3390/ma5050872

来源: mdpi

【 摘 要 】

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.

【 授权许可】

CC BY   
© 2012 by the authors; licensee MDPI, Basel, Switzerland.