Preparation of supported carbon molecular sieve membrane from novolac phenol-formaldehyde resin

Wei Wei; Guotong Qin; Haoquan Hu; Longbo You; Guohua Chen

doi:10.1016/j.memsci.2007.06.055

Preparation of supported carbon molecular sieve membrane from novolac phenol-formaldehyde resin

Wei Wei, Guotong Qin, Haoquan Hu, Longbo You, Guohua Chen

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

87 Citations (Scopus)

Abstract

An asymmetric carbon membrane was prepared by coating alcohol solution of novolac phenol-formaldehyde resin containing a little hexamine on a porous resin support from the same material. After drying in air for two days at room temperature, the coated support was heated at 150 °C for 1 h in air (heating rate: 0.5 °C/min) and then carbonized at 800 °C (heating rate: 0.5 °C/min) in Ar atmosphere. The support and the membrane layer were carbonized simultaneously. The coating-pyrolysis cycle only needed one time. SEM photographs showed the carbon membrane had an asymmetric structure formed by a dense skin layer with a thickness of around 35 μm and a porous substrate. Pure gases of different molecular size (H₂, CO₂, O₂, N₂ and CH₄) were used to test the carbon membrane permeance property. The membrane has a good selectivity for H₂/N₂ and H₂/CH₄ with H₂ permeance of 4.05 × 10^-6 cm³ cm^-2 s^-1 cmHg^-1. The permeance is independent of pressure. The results indicate that the gases transport through the membrane according to molecular sieve mechanism. © 2007 Elsevier B.V. All rights reserved.

Original language	English
Pages (from-to)	80-85
Journal	Journal of Membrane Science
Volume	303
Issue number	1-2
DOIs	https://doi.org/10.1016/j.memsci.2007.06.055
Publication status	Published - 15 Oct 2007
Externally published	Yes

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Research Keywords

Carbon membrane
Gas separation
Molecular sieve
Phenol-formaldehyde resin

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title = "Preparation of supported carbon molecular sieve membrane from novolac phenol-formaldehyde resin",

abstract = "An asymmetric carbon membrane was prepared by coating alcohol solution of novolac phenol-formaldehyde resin containing a little hexamine on a porous resin support from the same material. After drying in air for two days at room temperature, the coated support was heated at 150 °C for 1 h in air (heating rate: 0.5 °C/min) and then carbonized at 800 °C (heating rate: 0.5 °C/min) in Ar atmosphere. The support and the membrane layer were carbonized simultaneously. The coating-pyrolysis cycle only needed one time. SEM photographs showed the carbon membrane had an asymmetric structure formed by a dense skin layer with a thickness of around 35 μm and a porous substrate. Pure gases of different molecular size (H2, CO2, O2, N2 and CH4) were used to test the carbon membrane permeance property. The membrane has a good selectivity for H2/N2 and H2/CH4 with H2 permeance of 4.05 × 10-6 cm3 cm-2 s-1 cmHg-1. The permeance is independent of pressure. The results indicate that the gases transport through the membrane according to molecular sieve mechanism. {\textcopyright} 2007 Elsevier B.V. All rights reserved.",

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TY - JOUR

T1 - Preparation of supported carbon molecular sieve membrane from novolac phenol-formaldehyde resin

AU - Wei, Wei

AU - Qin, Guotong

AU - Hu, Haoquan

AU - You, Longbo

AU - Chen, Guohua

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2007/10/15

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N2 - An asymmetric carbon membrane was prepared by coating alcohol solution of novolac phenol-formaldehyde resin containing a little hexamine on a porous resin support from the same material. After drying in air for two days at room temperature, the coated support was heated at 150 °C for 1 h in air (heating rate: 0.5 °C/min) and then carbonized at 800 °C (heating rate: 0.5 °C/min) in Ar atmosphere. The support and the membrane layer were carbonized simultaneously. The coating-pyrolysis cycle only needed one time. SEM photographs showed the carbon membrane had an asymmetric structure formed by a dense skin layer with a thickness of around 35 μm and a porous substrate. Pure gases of different molecular size (H2, CO2, O2, N2 and CH4) were used to test the carbon membrane permeance property. The membrane has a good selectivity for H2/N2 and H2/CH4 with H2 permeance of 4.05 × 10-6 cm3 cm-2 s-1 cmHg-1. The permeance is independent of pressure. The results indicate that the gases transport through the membrane according to molecular sieve mechanism. © 2007 Elsevier B.V. All rights reserved.

AB - An asymmetric carbon membrane was prepared by coating alcohol solution of novolac phenol-formaldehyde resin containing a little hexamine on a porous resin support from the same material. After drying in air for two days at room temperature, the coated support was heated at 150 °C for 1 h in air (heating rate: 0.5 °C/min) and then carbonized at 800 °C (heating rate: 0.5 °C/min) in Ar atmosphere. The support and the membrane layer were carbonized simultaneously. The coating-pyrolysis cycle only needed one time. SEM photographs showed the carbon membrane had an asymmetric structure formed by a dense skin layer with a thickness of around 35 μm and a porous substrate. Pure gases of different molecular size (H2, CO2, O2, N2 and CH4) were used to test the carbon membrane permeance property. The membrane has a good selectivity for H2/N2 and H2/CH4 with H2 permeance of 4.05 × 10-6 cm3 cm-2 s-1 cmHg-1. The permeance is independent of pressure. The results indicate that the gases transport through the membrane according to molecular sieve mechanism. © 2007 Elsevier B.V. All rights reserved.

KW - Carbon membrane

KW - Gas separation

KW - Molecular sieve

KW - Phenol-formaldehyde resin

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JF - Journal of Membrane Science

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Preparation of supported carbon molecular sieve membrane from novolac phenol-formaldehyde resin

Abstract

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