Preparation and Properties of Hydrothermally Stable γ-Alumina-Based Composite Mesoporous Membranes

Md Hasan Zahir; Koji Sato; Hiroshi Mori; Yuji Iwamoto; Mikihiro Nomura; Shin Ichi Nakao

doi:10.1002/9780470588246.ch31

Preparation and Properties of Hydrothermally Stable γ-Alumina-Based Composite Mesoporous Membranes

Md Hasan Zahir^*
, Koji Sato
, Hiroshi Mori
, Yuji Iwamoto
, Mikihiro Nomura
, Shin Ichi Nakao

^*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceeding › Chapter › peer-review

Abstract

We report here on our thermal and hydrothermal investigations comparing mesoporous γ-l₂O₃ membrane with single and double dopant membranes prepared by the sol-gel method. Improvements in the h1-drothermal stability of mesoporous γ-l₂O₃ by transition (Ga³⁺) or rare-earth (La³⁺) cations are discussed, along with the effectiveness of double dopant (Ga³⁺_ La³⁺). The amounts of Ga₂O₃ oxide used varied between 0.0 and 30 mol% and those of La₂O₃ between 6 and 15 mol%. The thermal and hydrothermal (up to 75% steam) stability of nine types of membranes fabricated on an asymmetric porous α-Al₂O₃ support by means of a dip-coating process was characterized by Hz gas permeation at 500°C. By conducting tests with wide variations in dopant concentrations, material characterizations, and gas permeance performance, we have been able to optimize the key parameters for hydrothermally stable systems.

Original language	English
Title of host publication	Progress in Nanotechnology Processing
Publisher	wiley
Pages	215-221
Number of pages	7
ISBN (Electronic)	9780470588246
ISBN (Print)	9780470588239
DOIs	https://doi.org/10.1002/9780470588246.ch31
State	Published - 1 Jan 2014
Externally published	Yes

Bibliographical note

Publisher Copyright:
© 2010 by The American Ceramic Society. All rights reserved.

Keywords

Alumina-Based Composite
mesoporous y-Al2O3
sol-gel method

ASJC Scopus subject areas

General Engineering
General Materials Science

Access to Document

10.1002/9780470588246.ch31

Cite this

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title = "Preparation and Properties of Hydrothermally Stable γ-Alumina-Based Composite Mesoporous Membranes",

abstract = "We report here on our thermal and hydrothermal investigations comparing mesoporous γ-l2O3 membrane with single and double dopant membranes prepared by the sol-gel method. Improvements in the h1-drothermal stability of mesoporous γ-l2O3 by transition (Ga3+) or rare-earth (La3+) cations are discussed, along with the effectiveness of double dopant (Ga3+\_ La3+). The amounts of Ga2O3 oxide used varied between 0.0 and 30 mol\% and those of La2O3 between 6 and 15 mol\%. The thermal and hydrothermal (up to 75\% steam) stability of nine types of membranes fabricated on an asymmetric porous α-Al2O3 support by means of a dip-coating process was characterized by Hz gas permeation at 500°C. By conducting tests with wide variations in dopant concentrations, material characterizations, and gas permeance performance, we have been able to optimize the key parameters for hydrothermally stable systems.",

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year = "2014",

month = jan,

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doi = "10.1002/9780470588246.ch31",

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T1 - Preparation and Properties of Hydrothermally Stable γ-Alumina-Based Composite Mesoporous Membranes

AU - Zahir, Md Hasan

AU - Sato, Koji

AU - Mori, Hiroshi

AU - Iwamoto, Yuji

AU - Nomura, Mikihiro

AU - Nakao, Shin Ichi

PY - 2014/1/1

Y1 - 2014/1/1

N2 - We report here on our thermal and hydrothermal investigations comparing mesoporous γ-l2O3 membrane with single and double dopant membranes prepared by the sol-gel method. Improvements in the h1-drothermal stability of mesoporous γ-l2O3 by transition (Ga3+) or rare-earth (La3+) cations are discussed, along with the effectiveness of double dopant (Ga3+_ La3+). The amounts of Ga2O3 oxide used varied between 0.0 and 30 mol% and those of La2O3 between 6 and 15 mol%. The thermal and hydrothermal (up to 75% steam) stability of nine types of membranes fabricated on an asymmetric porous α-Al2O3 support by means of a dip-coating process was characterized by Hz gas permeation at 500°C. By conducting tests with wide variations in dopant concentrations, material characterizations, and gas permeance performance, we have been able to optimize the key parameters for hydrothermally stable systems.

AB - We report here on our thermal and hydrothermal investigations comparing mesoporous γ-l2O3 membrane with single and double dopant membranes prepared by the sol-gel method. Improvements in the h1-drothermal stability of mesoporous γ-l2O3 by transition (Ga3+) or rare-earth (La3+) cations are discussed, along with the effectiveness of double dopant (Ga3+_ La3+). The amounts of Ga2O3 oxide used varied between 0.0 and 30 mol% and those of La2O3 between 6 and 15 mol%. The thermal and hydrothermal (up to 75% steam) stability of nine types of membranes fabricated on an asymmetric porous α-Al2O3 support by means of a dip-coating process was characterized by Hz gas permeation at 500°C. By conducting tests with wide variations in dopant concentrations, material characterizations, and gas permeance performance, we have been able to optimize the key parameters for hydrothermally stable systems.

KW - Alumina-Based Composite

KW - mesoporous y-Al2O3

KW - sol-gel method

UR - https://www.scopus.com/pages/publications/105007668303

U2 - 10.1002/9780470588246.ch31

DO - 10.1002/9780470588246.ch31

M3 - Chapter

AN - SCOPUS:105007668303

SN - 9780470588239

SP - 215

EP - 221

BT - Progress in Nanotechnology Processing

PB - wiley

ER -

Preparation and Properties of Hydrothermally Stable γ-Alumina-Based Composite Mesoporous Membranes

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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