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:10.1111/j.1551-2916.2006.01165.x

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: Contribution to journal › Article › peer-review

38 Scopus citations

Abstract

We report here on our thermal and hydrothermal investigations comparing mesoporous γ-Al ₂O ₃ membrane with single and double dopant membranes prepared by the sol-gel method. Improvements in the hydrothermal stability of mesoporous γ-Al ₂O ₃ by transition (Ga ³⁺) or rare-earth (La ³⁺) cations are discussed, along with the effectiveness of double dopant (Ga ³⁺- La ³⁺). The amounts of Ga ₂O ₃ oxide used varied between 0.0 and 30 mol% and those of La ₂O ₃ 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-Al ₂O ₃ support by means of a dip-coating process was characterized by H ₂ 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
Pages (from-to)	2874-2880
Number of pages	7
Journal	Journal of the American Ceramic Society
Volume	89
Issue number	9
DOIs	https://doi.org/10.1111/j.1551-2916.2006.01165.x
State	Published - Sep 2006
Externally published	Yes

ASJC Scopus subject areas

Ceramics and Composites
Materials Chemistry

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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-Al 2O 3 membrane with single and double dopant membranes prepared by the sol-gel method. Improvements in the hydrothermal stability of mesoporous γ-Al 2O 3 by transition (Ga 3+) or rare-earth (La 3+) cations are discussed, along with the effectiveness of double dopant (Ga 3+- La 3+). The amounts of Ga 2O 3 oxide used varied between 0.0 and 30 mol\% and those of La 2O 3 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-Al 2O 3 support by means of a dip-coating process was characterized by H 2 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.",

author = "Zahir, \{Md Hasan\} and Koji Sato and Hiroshi Mori and Yuji Iwamoto and Mikihiro Nomura and Nakao, \{Shin Ichi\}",

year = "2006",

month = sep,

doi = "10.1111/j.1551-2916.2006.01165.x",

language = "English",

volume = "89",

pages = "2874--2880",

journal = "Journal of the American Ceramic Society",

issn = "0002-7820",

publisher = "Wiley-Blackwell",

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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 - 2006/9

Y1 - 2006/9

N2 - We report here on our thermal and hydrothermal investigations comparing mesoporous γ-Al 2O 3 membrane with single and double dopant membranes prepared by the sol-gel method. Improvements in the hydrothermal stability of mesoporous γ-Al 2O 3 by transition (Ga 3+) or rare-earth (La 3+) cations are discussed, along with the effectiveness of double dopant (Ga 3+- La 3+). The amounts of Ga 2O 3 oxide used varied between 0.0 and 30 mol% and those of La 2O 3 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-Al 2O 3 support by means of a dip-coating process was characterized by H 2 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-Al 2O 3 membrane with single and double dopant membranes prepared by the sol-gel method. Improvements in the hydrothermal stability of mesoporous γ-Al 2O 3 by transition (Ga 3+) or rare-earth (La 3+) cations are discussed, along with the effectiveness of double dopant (Ga 3+- La 3+). The amounts of Ga 2O 3 oxide used varied between 0.0 and 30 mol% and those of La 2O 3 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-Al 2O 3 support by means of a dip-coating process was characterized by H 2 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.

UR - https://www.scopus.com/pages/publications/33747611203

U2 - 10.1111/j.1551-2916.2006.01165.x

DO - 10.1111/j.1551-2916.2006.01165.x

M3 - Article

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SN - 0002-7820

VL - 89

SP - 2874

EP - 2880

JO - Journal of the American Ceramic Society

JF - Journal of the American Ceramic Society

IS - 9

ER -

Preparation and properties of hydrothermally stable γ-alumina-based composite mesoporous membranes

Abstract

ASJC Scopus subject areas

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