Preparation of silica hybrid membranes for high temperature CO2 separation

Mikihiro Nomura, Emi Matsuyama, Ayumi Ikeda, Makoto Komatsuzaki, Misa Sasaki

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

CO2 separation through membranes represents a solution for efficient CO2 recovery. A high temperature CO2 permselective membrane can be applied to a membrane reactor for reforming reactions. However, CO2 permselective membranes have been primarily developed as low temperature polymeric membranes. Only a few articles have reported high temperature CO2 permselective membranes. We prepared silica membranes using chemical vapor deposition (CVD) for high temperature hydrocarbon separation. In this study, the pore size control of the silica membranes was investigated. CVD was performed at 150-450°C for 90 min. Propyltrimethoxysilane (PrTMOS) was used as the silica source. PrTMOS and O3 were provided from opposite sides of the porous alumina substrate. The CO2/N2 permeance ratio was the highest (20) using the membrane deposited at 270°C. The deposition conditions were investigated using FT-IR measurements of the PrTMOS hydrolysis powder. Absorption at 2,960 cm-1 indicated C-CH3 stretching. The ratio of the absorption at 2,960 cm-1 of the as-made sample and the calcined sample was evaluated. This ratio was the maximum (0.41) with treatment at 270°C. Thus, the CO2 permselectivity is likely due to the remaining alkyl groups on the membrane. The activation energy of CO2 permeation was negative, while that of N2 was 5.6 kJ mol-1. The negative activation energy indicates that the permeation is due to adsorption on the membrane.

Original languageEnglish
Pages (from-to)569-573
Number of pages5
JournalJournal of Chemical Engineering of Japan
Volume47
Issue number7 SPECIAL ISSUE
DOIs
Publication statusPublished - 2014

Fingerprint

Silicon Dioxide
Silica
Membranes
Permselective membranes
Temperature
Permeation
Chemical vapor deposition
Activation energy
Polymeric membranes
Aluminum Oxide
Reforming reactions
Hydrocarbons
Powders
Stretching
Pore size
Hydrolysis
Alumina
Adsorption
Recovery
Substrates

Keywords

  • Counter diffusion CVD method
  • Separation
  • Silica hybrid membrane

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Chemistry(all)

Cite this

Preparation of silica hybrid membranes for high temperature CO2 separation. / Nomura, Mikihiro; Matsuyama, Emi; Ikeda, Ayumi; Komatsuzaki, Makoto; Sasaki, Misa.

In: Journal of Chemical Engineering of Japan, Vol. 47, No. 7 SPECIAL ISSUE, 2014, p. 569-573.

Research output: Contribution to journalArticle

Nomura, M, Matsuyama, E, Ikeda, A, Komatsuzaki, M & Sasaki, M 2014, 'Preparation of silica hybrid membranes for high temperature CO2 separation', Journal of Chemical Engineering of Japan, vol. 47, no. 7 SPECIAL ISSUE, pp. 569-573. https://doi.org/10.1252/jcej.13we311
Nomura, Mikihiro ; Matsuyama, Emi ; Ikeda, Ayumi ; Komatsuzaki, Makoto ; Sasaki, Misa. / Preparation of silica hybrid membranes for high temperature CO2 separation. In: Journal of Chemical Engineering of Japan. 2014 ; Vol. 47, No. 7 SPECIAL ISSUE. pp. 569-573.
@article{373826bb74c048fe85e9e213a572983f,
title = "Preparation of silica hybrid membranes for high temperature CO2 separation",
abstract = "CO2 separation through membranes represents a solution for efficient CO2 recovery. A high temperature CO2 permselective membrane can be applied to a membrane reactor for reforming reactions. However, CO2 permselective membranes have been primarily developed as low temperature polymeric membranes. Only a few articles have reported high temperature CO2 permselective membranes. We prepared silica membranes using chemical vapor deposition (CVD) for high temperature hydrocarbon separation. In this study, the pore size control of the silica membranes was investigated. CVD was performed at 150-450°C for 90 min. Propyltrimethoxysilane (PrTMOS) was used as the silica source. PrTMOS and O3 were provided from opposite sides of the porous alumina substrate. The CO2/N2 permeance ratio was the highest (20) using the membrane deposited at 270°C. The deposition conditions were investigated using FT-IR measurements of the PrTMOS hydrolysis powder. Absorption at 2,960 cm-1 indicated C-CH3 stretching. The ratio of the absorption at 2,960 cm-1 of the as-made sample and the calcined sample was evaluated. This ratio was the maximum (0.41) with treatment at 270°C. Thus, the CO2 permselectivity is likely due to the remaining alkyl groups on the membrane. The activation energy of CO2 permeation was negative, while that of N2 was 5.6 kJ mol-1. The negative activation energy indicates that the permeation is due to adsorption on the membrane.",
keywords = "Counter diffusion CVD method, Separation, Silica hybrid membrane",
author = "Mikihiro Nomura and Emi Matsuyama and Ayumi Ikeda and Makoto Komatsuzaki and Misa Sasaki",
year = "2014",
doi = "10.1252/jcej.13we311",
language = "English",
volume = "47",
pages = "569--573",
journal = "Journal of Chemical Engineering of Japan",
issn = "0021-9592",
publisher = "Society of Chemical Engineers, Japan",
number = "7 SPECIAL ISSUE",

}

TY - JOUR

T1 - Preparation of silica hybrid membranes for high temperature CO2 separation

AU - Nomura, Mikihiro

AU - Matsuyama, Emi

AU - Ikeda, Ayumi

AU - Komatsuzaki, Makoto

AU - Sasaki, Misa

PY - 2014

Y1 - 2014

N2 - CO2 separation through membranes represents a solution for efficient CO2 recovery. A high temperature CO2 permselective membrane can be applied to a membrane reactor for reforming reactions. However, CO2 permselective membranes have been primarily developed as low temperature polymeric membranes. Only a few articles have reported high temperature CO2 permselective membranes. We prepared silica membranes using chemical vapor deposition (CVD) for high temperature hydrocarbon separation. In this study, the pore size control of the silica membranes was investigated. CVD was performed at 150-450°C for 90 min. Propyltrimethoxysilane (PrTMOS) was used as the silica source. PrTMOS and O3 were provided from opposite sides of the porous alumina substrate. The CO2/N2 permeance ratio was the highest (20) using the membrane deposited at 270°C. The deposition conditions were investigated using FT-IR measurements of the PrTMOS hydrolysis powder. Absorption at 2,960 cm-1 indicated C-CH3 stretching. The ratio of the absorption at 2,960 cm-1 of the as-made sample and the calcined sample was evaluated. This ratio was the maximum (0.41) with treatment at 270°C. Thus, the CO2 permselectivity is likely due to the remaining alkyl groups on the membrane. The activation energy of CO2 permeation was negative, while that of N2 was 5.6 kJ mol-1. The negative activation energy indicates that the permeation is due to adsorption on the membrane.

AB - CO2 separation through membranes represents a solution for efficient CO2 recovery. A high temperature CO2 permselective membrane can be applied to a membrane reactor for reforming reactions. However, CO2 permselective membranes have been primarily developed as low temperature polymeric membranes. Only a few articles have reported high temperature CO2 permselective membranes. We prepared silica membranes using chemical vapor deposition (CVD) for high temperature hydrocarbon separation. In this study, the pore size control of the silica membranes was investigated. CVD was performed at 150-450°C for 90 min. Propyltrimethoxysilane (PrTMOS) was used as the silica source. PrTMOS and O3 were provided from opposite sides of the porous alumina substrate. The CO2/N2 permeance ratio was the highest (20) using the membrane deposited at 270°C. The deposition conditions were investigated using FT-IR measurements of the PrTMOS hydrolysis powder. Absorption at 2,960 cm-1 indicated C-CH3 stretching. The ratio of the absorption at 2,960 cm-1 of the as-made sample and the calcined sample was evaluated. This ratio was the maximum (0.41) with treatment at 270°C. Thus, the CO2 permselectivity is likely due to the remaining alkyl groups on the membrane. The activation energy of CO2 permeation was negative, while that of N2 was 5.6 kJ mol-1. The negative activation energy indicates that the permeation is due to adsorption on the membrane.

KW - Counter diffusion CVD method

KW - Separation

KW - Silica hybrid membrane

UR - http://www.scopus.com/inward/record.url?scp=84905226200&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84905226200&partnerID=8YFLogxK

U2 - 10.1252/jcej.13we311

DO - 10.1252/jcej.13we311

M3 - Article

AN - SCOPUS:84905226200

VL - 47

SP - 569

EP - 573

JO - Journal of Chemical Engineering of Japan

JF - Journal of Chemical Engineering of Japan

SN - 0021-9592

IS - 7 SPECIAL ISSUE

ER -