Alkylation of benzene with propylene in a flow-through membrane reactor and fixed-bed reactor: preliminary results

• Autor(a) principal: Torres-Rodríguez, Miguel
• Data de Publicação: 2012
• Outros Autores: Gutiérrez-Arzaluz, Mirella, Mugica-Álvarez, Violeta, Aguilar-Pliego, Julia, Pergher, Sibele Berenice Castellã
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Repositório Institucional da UFRN
• Texto Completo: https://repositorio.ufrn.br/jspui/handle/123456789/29188
• topic: β-zeolite; Zeolite membrane; Alkylation; Acid catalysis

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.