Impregnation of Calcium Chloride into Alumina Thin Film Prepared by Oxalic Acid Anodizing
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- Suwa Yuji
- Graduate School of Natural Science and Technology, Kanazawa University
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- Kumita Mikio
- College of Science and Engineering, School of Natural System, Kanazawa University
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- Komori Hiroaki
- Graduate School of Natural Science and Technology, Kanazawa University
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- Kodama Akio
- College of Science and Engineering, School of Mechanical Engineering, Kanazawa University
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- Otani Yoshio
- College of Science and Engineering, School of Natural System, Kanazawa University
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In the present study, a calcium chloride-oxalic acid anodized alumina composite was proposed as a sorbent of water vapor for the application to adsorption chiller. CaCl2-anodic alumina composite sorbents were prepared by anodic oxidation of an aluminum plate in an oxalic acid bath, following the widening of pores in anodic oxide films with a sulfuric acid solution and the impregnation of saturated aqueous solution of CaCl2 into the pores at a reduced pressure. As a result, the alumina films prepared in an oxalic acid bath had numerous large pores, and their porosities were significantly larger than those of sulfuric acid-anodized alumina films. The amounts of CaCl2 impregnated into the alumina films were a function of the apparent densities of the films, and the maximum CaCl2 content was 39.7 wt%. The CaCl2-anodic alumina composites were capable of sorbing water vapor even in the relative pressure range below 0.3. With higher doses of CaCl2 contained by the alumina film, a larger amount of water vapor was sorbed by the composite. Furthermore, the CaCl2-oxalic acid anodized alumina composite showed a fast water sorption rate like commercial silica-gel particles.
収録刊行物
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- JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
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JOURNAL OF CHEMICAL ENGINEERING OF JAPAN 47 (7), 602-607, 2014
公益社団法人 化学工学会
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詳細情報 詳細情報について
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- CRID
- 1390282679544169984
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- NII論文ID
- 130004056950
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- NII書誌ID
- AA00709658
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- ISSN
- 18811299
- 00219592
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- NDL書誌ID
- 025602373
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- NDL
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- 使用不可