書誌事項
- タイトル別名
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- Gas Permeation Characteristics of Metal Doped Microporous Silica Membranes for CO2 Separation Prepared by Metal Salt-added Sol-gel Processing
- CO2 ブンリ ノ タメ ノ ゾル ゲルホウ ニ ヨル キンゾク ドープ タコウセイ シリカ マク ノ キタイ トウカ トクセイ
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Gas permeation properties through silica based metal-doped microporous membranes prepared by the sol-gel method were investigated. In order to control pore size and affinity with permeating gas molecules, especially with CO2 for CO2/N2 gas separation membranes, nitrates of Ni, Al, Mg metals, and ammonium salt of vanadium were added to silica colloidal solutions. The molar ratio of additives, Si/M was 9/1. CO2 and N2 adsorption measurements on pure silica and metal-doped silica powder samples were conducted to estimate the affinity of the membrane materials with those gases. Pure silica and Ni-doped silica showed the largest amount of adsorbed CO2. Ni-doped silica membranes showed no attract difference from a typical pure silica membrane for temperature dependencies of gas permeance, while Mg-doped silica membranes might have relatively smaller effective pores for CO2/N2 separation and the value of permeance ratio of 57 could be obtained at 50 ℃. On the other hand, V-doped silica membranes had larger pores and N2 gas permeance increased with decreasing temperature, which would result in lower performance of CO2 separation. Concerning the Al-doped silica membranes, the affinity with CO2 decreased by addition of Al. In addition, activation energy of He and H2 for permeation on Al-doped membranes became greater, which suggested densification of silica network because of Al dispersion in the dense phase.
収録刊行物
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- 膜
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膜 32 (1), 45-53, 2007
日本膜学会
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詳細情報 詳細情報について
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- CRID
- 1390001206421670400
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- NII論文ID
- 10018696353
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- NII書誌ID
- AN0023215X
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- ISSN
- 18846440
- 03851036
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- NDL書誌ID
- 8662525
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
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- 抄録ライセンスフラグ
- 使用不可