Composite-alumina-carbon molecular sieve membranes prepared from novolac resin and boehmite. Part I: Preparation, characterization and gas permeation studies

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

Autores

Margot A. Llosa Tanco (Autor) FEUP; David A. Pacheco Tanaka (Autor) FEUP; Sandra C. Rodrigues (Autor) FEUP; Adélio Mendes (Autor) FEUP; Miguel Teixeira (Autor) FEUP

Revista

Título: International Journal of Hydrogen Energy

Vol. 40 Nº 16

Páginas: 5653-5663

ISSN: 0360-3199

Editora: Elsevier

Indexação

ISI Web of Knowledge - 16 Citações

ISI Web of Science

Scopus - 34 Citações

INSPEC

Classificação Científica

CORDIS: Ciências Tecnológicas > Engenharia > Engenharia química

FOS: Ciências da engenharia e tecnologias > Engenharia química

Projetos Associados

LEPABE - Laboratório de Engenharia de Processos, Ambiente, Biotecnologia e Energia

Outras Informações

ID Authenticus: P-00G-3E6

DOI: 10.1016/j.ijhydene.2015.02.112

Abstract (EN): Supported composite alumina-carbon molecular sieve membranes (c-CMSM) were prepared from in house prepared novolac phenolic resin loaded with boehmite nanoparticles in a single dipping-drying-carbonization step. A porous a-alumina tube support was dipped into a N-methyl-2-pyrrolidone solution containing polymerized novolac resin loaded with boehmite, subsequently dried at 100 degrees C and carbonized at 500 degrees C under nitrogen environment. The structure, morphology and performance of the membranes were examined by scanning electron microscopy (SEM), X-ray diffraction (XRD), thermogravimetric analysis (TGA), carbon dioxide adsorption and permeation of N-2, O-2, He, H-2 and CO2. SEM showed carbon membranes with a thin and very uniform layer with a thickness of ca. 3 mu m CO2 adsorption isotherms indicated that the produced carbon membranes presented a microporous structure. The c-CMSM exhibited good gas separation properties. The permselectivity surpass the Robeson upper bound for polymeric membranes, especially regarding ideal permselectivities of pairs H-2/N-2 = 117, and He/O-2 = 49. Aging effects were observed after membrane exposure to ambient air. However with a thermal treatment under nitrogen atmosphere the permeance of nitrogen increases. Copyright (C) 2015, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Notas: Publicação abrangida pelo Journal Citation Reports 2015

Nº de páginas: 11