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

Margot A. Llosa Tanco; David A. Pacheco Tanaka; Adélio Mendes

doi:10.1016/j.ijhydene.2014.11.025

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

Margot A. Llosa Tanco, David A. Pacheco Tanaka, Adélio Mendes

Membrane Technology and Intensification of Processes

Research output: Contribution to journal › Article › peer-review

58 Citations (Scopus)

Abstract

The influence of carbonization temperature on the permeation properties and aging of thin (4 μm) 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.

Original language	English
Pages (from-to)	3485-3496
Number of pages	12
Journal	International Journal of Hydrogen Energy
Volume	40
Issue number	8
DOIs	https://doi.org/10.1016/j.ijhydene.2014.11.025
Publication status	Published - 2 Mar 2015

Keywords

Carbon membranes
Gas separation
Hydrogen separation
Nanoparticles
Novolac phenolic resin

Project and Funding Information

Funding Info
Portuguese Foundation for Science and Technology (FCT)

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.ijhydene.2014.11.025

Cite this

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abstract = "The influence of carbonization temperature on the permeation properties and aging of thin (4 μm) 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.",

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year = "2015",

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Composite-alumina-carbon molecular sieve membranes prepared from novolac resin and boehmite. Part II: Effect of the carbonization temperature on the gas permeation properties. / Llosa Tanco, Margot A.; Pacheco Tanaka, David A.; Mendes, Adélio.
In: International Journal of Hydrogen Energy, Vol. 40, No. 8, 02.03.2015, p. 3485-3496.

Research output: Contribution to journal › Article › peer-review

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AU - Pacheco Tanaka, David A.

AU - Mendes, Adélio

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KW - Novolac phenolic resin

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

Abstract

Keywords

Project and Funding Information

UN SDGs

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