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

研究成果: Article査読

33 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)2874-2880
ページ数7
ジャーナルJournal of the American Ceramic Society
89
9
DOI
出版ステータスPublished - 2006 9 1
外部発表はい

ASJC Scopus subject areas

  • セラミックおよび複合材料
  • 材料化学

フィンガープリント

「Preparation and properties of hydrothermally stable γ-alumina-based composite mesoporous membranes」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル