Composite-alumina-carbon molecular sieve membranes prepared from novolac resin and boehmite. Part II: Effect of the carbonization temperature on the gas permeation properties

• Tipo: Artigo em Revista Científica Internacional
• Data: 2015

Autores

Margot A. Llosa Tanco (Autor) FEUP; David A. Pacheco Tanaka (Autor) FEUP; Adélio Mendes (Autor) FEUP

Revista

Título: International Journal of Hydrogen Energy

Vol. 40 Nº 8

Páginas: 3485-3496

ISSN: 0360-3199

Editora: Elsevier

Indexação

ISI Web of Knowledge - 12 Citações

ISI Web of Science

Scopus - 37 Citações

INSPEC

Classificação Científica

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia química

FOS: Ciências da engenharia e tecnologias > Engenharia química

Projetos Associados

PTDC/EQU-EQU/114944/2009 - Desenvolvimento de um sistema autorregenerativo para a remoção de CO2 de sistemas anestésicos em circuito fechado

Outras Informações

ID Authenticus: P-00A-606

DOI: 10.1016/j.ijhydene.2014.11.025

Abstract (EN): The influence of carbonization temperature on the permeation properties and aging of thin (4 mm) supported carbon molecular sieve membranes (c-CMSM), prepared from in house synthesized novolac phenolic resin loaded with boehmite nanoparticles, were studied. Just after membrane carbonization (fresh membrane), high permeance to N2 and O2 and low O2/ N2 permselectivities were observed; the highest permeations were observed for carbonization end temperatures between 500
C and 700
C. After leaving the c-CMSM 1 day in the air, a large decrease in the permeation and considerable increase in the permselectivity were observed due to the reduction of the pore size by oxygen chemisorption and water physical adsorption; the permeability to H2 and H2/N2 ideal permselectivity for a membrane carbonized at 550
C are close to palladium membranes for low temperature (<100
C). The effect of the permeation characteristics of the membranes carbonized at various temperatures and the removal of water adsorbed in the pores by heat treatment were studied.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Notas: Publicação abrangida pelo Journal Citation Reports 2015

Nº de páginas: 12