Propane/propene separation by SBA-15 and pi-complexated Ag-SBA-15

• Tipo: Artigo em Revista Científica Internacional
• Data: 2005

Autores

Grande, CA (Autor) Outra; Firpo, N (Autor) Outra; Basaldella, E (Autor) Outra; Alírio Rodrigues (Autor) FEUP

Revista

Título: ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY

Vol. 11

Páginas: 775-780

ISSN: 0929-5607

Editora: Springer

Indexação

ISI Proceedings

ISI Web of Knowledge - 10 Citações

Scopus - 10 Citações

Classificação Científica

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia química

Outras Informações

ID Authenticus: P-000-53E

DOI: 10.1007/s10450-005-6022-4

Resumo (PT): Synthesis, characterization and adsorption properties of propane/propylene on mesoporous SBA-15 are reported. This material was also used as high surface area material for silver deposition to enhance propylene adsorption improving selectivity towards the olefin. Two different silver loadings were tested: Ag/SiO2= 0.5 and Ag/SiO2 = 1.0. With the lower silver content, better selectivity and amount adsorbed was obtained. Preliminary studies were done for the use of this adsorbent in Vacuum-Pressure Swing Adsorption (VSA-PSA) units. With a four-step cycle comprising feed, pressurization, rinse and blowdown recovery of 97% propylene with chemical grade purity (91%) was obtained and also fuel grade HD-5 propane at high pressure. If higher propylene purity is required, a five-step cycle has to be used (pressurization, feed, rinse, co-current depressurization to intermediate pressure and counter-current blowdown). In this case, purity of 99% was obtained with 63% recovery.

Abstract (EN): Synthesis, characterization and adsorption properties of propane/propylene on mesoporous SBA-15 are reported. This material was also used as high surface area material for silver deposition to enhance propylene adsorption improving selectivity towards the olefin. Two different silver loadings were tested: Ag/SiO2= 0.5 and Ag/SiO2 = 1.0. With the lower silver content, better selectivity and amount adsorbed was obtained. Preliminary studies were done for the use of this adsorbent in Vacuum-Pressure Swing Adsorption (VSA-PSA) units. With a four-step cycle comprising feed, pressurization, rinse and blowdown recovery of 97% propylene with chemical grade purity (91%) was obtained and also fuel grade HD-5 propane at high pressure. If higher propylene purity is required, a five-step cycle has to be used (pressurization, feed, rinse, co-current depressurization to intermediate pressure and counter-current blowdown). In this case, purity of 99% was obtained with 63% recovery.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6