Title
Carbon-Al2O3-Ag composite molecular sieve membranes for gas separation
Date Issued
01 December 2012
Access level
metadata only access
Resource Type
journal article
Author(s)
Universidade do Porto
Abstract
Phenolic resins loaded with two different inorganic fillers (boehmite (γ-AlO(OH)) and silver (Ag)) were used to prepare composite carbon membranes. Polymer solutions containing γ-AlO(OH) and AgNO3 were prepared and the effect of Ag on the transport properties of the composite membrane was evaluated. The polymer solutions were coated on α-Al2O3 tubes and carbonized in a single dipping-drying-pyrolysis step. After pyrolysis at 550°C, γ-AlO(OH) yielded γ-Al2O3, and Ag agglomerated forming spherical nanoparticles of 30nm in diameter. Ag loading enhanced the carbon membrane performance for several gas pairs of interest, especially for C3H6/C3H8 separation, where the C3H6/C3H8 permselectivity increased from a maximum of 15 to 38. © 2012 The Institution of Chemical Engineers.
Start page
2338
End page
2345
Volume
90
Issue
12
Language
English
OCDE Knowledge area
Química orgánica
Subjects
Scopus EID
2-s2.0-84870251825
Source
Chemical Engineering Research and Design
ISSN of the container
02638762
Sponsor(s)
Miguel Teixeira and Margot Tanco are grateful to the Portuguese Foundation for Science and Technology (FCT) for their doctoral grants (references SFRH/BD/24768/2005 and SFRH/BD/61898/2009). Marta Campo is grateful to FCT for her post-doctoral grant (SFRH/BPD/65377/2009). The authors also acknowledge financing from FCT through the projects POCTI/EQU/59344/2004 and POCTI/EQU/59345/2004. The authors are thankful to CEMUP for the SEM analysis ( REEQ/1062/CTM/2005 and REDE/1512/RME/2005 funding provided by FCT ). Finally, the authors acknowledge Professor Pedro Tavares from UTAD (Universidade de Trás-os-Montes e Alto Douro) for the valuable discussions on XRD.
Sources of information:
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