Preparation and characterization of low temperature PTFE-Nafion composite membranes for hydrogen production

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Abstract

A simple method produces PTFE-Nafion membrane with ceramic tube as a support was used to study the separation of hydrogen gas. The membrane was made using the method of coating, wherein the liquid polymer, Nafion and PTFE material were alternately injected into the surface of the ceramic tube. This step was performed in order to form the membrane layers. Two layers of PTFE were used to sandwich the Nafion layer, providing the Nafion with stability up to 300°C. In contrast to the palladium membranes which have to be carried out at a high temperature, the resulted membrane can be operated at a low temperature (below 100°C) and is still stable in temperature up to 300°C. Moreover, the PTFE-Nafion membrane can also be employed in a membrane reactor to produce hydrogen. The highest hydrogen permeation flux obtained from this membrane was 13.6cm<sup>3</sup>cm<sup>-2</sup>s<sup>-1</sup> at permselectivity of 3.2. Result showed that the hydrogen separation factor increased align with temperature rising. On the other hand, the hydrogen separation decreased in line with increasing value of pressure difference between permeate and retentate. This hydrogen separation phenomena revealed that the gas permeation in the membrane was dominated by Knudsen diffusion. The occurrence of Knudsen diffusion in the membrane concluded that the PTFE-Nafion membrane has an ability to separate H<inf>2</inf> from N<inf>2</inf>, CO and CO<inf>2</inf>.

Original languageEnglish
JournalInternational Journal of Hydrogen Energy
DOIs
Publication statusAccepted/In press - 27 Nov 2014

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Composite membranes
hydrogen production
Hydrogen production
Polytetrafluoroethylenes
membranes
Membranes
preparation
composite materials
Hydrogen
Temperature
hydrogen
Permeation
ceramics
tubes
Gases
gases
Palladium
coating
palladium
reactors

Keywords

  • Fuel cell
  • Gas separation
  • Hydrogen production
  • Mesoporous
  • Polymer

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

Cite this

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title = "Preparation and characterization of low temperature PTFE-Nafion composite membranes for hydrogen production",
abstract = "A simple method produces PTFE-Nafion membrane with ceramic tube as a support was used to study the separation of hydrogen gas. The membrane was made using the method of coating, wherein the liquid polymer, Nafion and PTFE material were alternately injected into the surface of the ceramic tube. This step was performed in order to form the membrane layers. Two layers of PTFE were used to sandwich the Nafion layer, providing the Nafion with stability up to 300°C. In contrast to the palladium membranes which have to be carried out at a high temperature, the resulted membrane can be operated at a low temperature (below 100°C) and is still stable in temperature up to 300°C. Moreover, the PTFE-Nafion membrane can also be employed in a membrane reactor to produce hydrogen. The highest hydrogen permeation flux obtained from this membrane was 13.6cm3cm-2s-1 at permselectivity of 3.2. Result showed that the hydrogen separation factor increased align with temperature rising. On the other hand, the hydrogen separation decreased in line with increasing value of pressure difference between permeate and retentate. This hydrogen separation phenomena revealed that the gas permeation in the membrane was dominated by Knudsen diffusion. The occurrence of Knudsen diffusion in the membrane concluded that the PTFE-Nafion membrane has an ability to separate H2 from N2, CO and CO2.",
keywords = "Fuel cell, Gas separation, Hydrogen production, Mesoporous, Polymer",
author = "Teuku Husaini and Daud, {W. R W} and Z. Yaakob and Majlan, {E. H.}",
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AU - Daud, W. R W

AU - Yaakob, Z.

AU - Majlan, E. H.

PY - 2014/11/27

Y1 - 2014/11/27

N2 - A simple method produces PTFE-Nafion membrane with ceramic tube as a support was used to study the separation of hydrogen gas. The membrane was made using the method of coating, wherein the liquid polymer, Nafion and PTFE material were alternately injected into the surface of the ceramic tube. This step was performed in order to form the membrane layers. Two layers of PTFE were used to sandwich the Nafion layer, providing the Nafion with stability up to 300°C. In contrast to the palladium membranes which have to be carried out at a high temperature, the resulted membrane can be operated at a low temperature (below 100°C) and is still stable in temperature up to 300°C. Moreover, the PTFE-Nafion membrane can also be employed in a membrane reactor to produce hydrogen. The highest hydrogen permeation flux obtained from this membrane was 13.6cm3cm-2s-1 at permselectivity of 3.2. Result showed that the hydrogen separation factor increased align with temperature rising. On the other hand, the hydrogen separation decreased in line with increasing value of pressure difference between permeate and retentate. This hydrogen separation phenomena revealed that the gas permeation in the membrane was dominated by Knudsen diffusion. The occurrence of Knudsen diffusion in the membrane concluded that the PTFE-Nafion membrane has an ability to separate H2 from N2, CO and CO2.

AB - A simple method produces PTFE-Nafion membrane with ceramic tube as a support was used to study the separation of hydrogen gas. The membrane was made using the method of coating, wherein the liquid polymer, Nafion and PTFE material were alternately injected into the surface of the ceramic tube. This step was performed in order to form the membrane layers. Two layers of PTFE were used to sandwich the Nafion layer, providing the Nafion with stability up to 300°C. In contrast to the palladium membranes which have to be carried out at a high temperature, the resulted membrane can be operated at a low temperature (below 100°C) and is still stable in temperature up to 300°C. Moreover, the PTFE-Nafion membrane can also be employed in a membrane reactor to produce hydrogen. The highest hydrogen permeation flux obtained from this membrane was 13.6cm3cm-2s-1 at permselectivity of 3.2. Result showed that the hydrogen separation factor increased align with temperature rising. On the other hand, the hydrogen separation decreased in line with increasing value of pressure difference between permeate and retentate. This hydrogen separation phenomena revealed that the gas permeation in the membrane was dominated by Knudsen diffusion. The occurrence of Knudsen diffusion in the membrane concluded that the PTFE-Nafion membrane has an ability to separate H2 from N2, CO and CO2.

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