Design of quaternary ammonium type-ionic liquids as desiccants for an air-conditioning system
The liquid desiccant air-conditioning system allows reducing energy consumption compared to the conventional compressor-type air conditioners. In order to develop desiccant materials for air conditioners, we have investigated the dehumidification capability of quaternary ammonium Ionic Liquids (ILs)...
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| Format: | Article |
| Language: | English |
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KeAi Communications Co. Ltd.
2020-12-01
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| Series: | Green Chemical Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666952820300182 |
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| author | Sho Maekawa Ryo Matsumoto Kenta Ito Toshiki Nokami Jian-Xin Li Hiroshi Nakayama Toshiyuki Itoh |
| author_facet | Sho Maekawa Ryo Matsumoto Kenta Ito Toshiki Nokami Jian-Xin Li Hiroshi Nakayama Toshiyuki Itoh |
| author_sort | Sho Maekawa |
| collection | DOAJ |
| description | The liquid desiccant air-conditioning system allows reducing energy consumption compared to the conventional compressor-type air conditioners. In order to develop desiccant materials for air conditioners, we have investigated the dehumidification capability of quaternary ammonium Ionic Liquids (ILs) and the equilibrium water vapor pressure of aqueous solutions of these ammonium salts. Among the seven tested types of ILs, 2-hydroxy-N,N,N-trimethylethan-1-aminium dimethylphosphate ([Ch][DMPO4]) displayed the best dehumidification capability and the lowest equilibrium water vapor pressure. Furthermore, the 80% aqueous solution of [Ch][DMPO4] exhibited a less corrosive effect on four types of metals, i.e., steel (hot dip zinc-aluminum alloy plated steel), copper (C1100P), aluminum (A5052), and stainless steel (SUS: SUS304). It should be noted that this [Ch][DMPO4] is not only non-toxic but also exhibits a stable nature; the aqueous solution produced no odor after storing for over 1 year under ambient conditions. |
| first_indexed | 2024-04-11T04:50:03Z |
| format | Article |
| id | doaj.art-812097902b324547aaf618c2de072271 |
| institution | Directory Open Access Journal |
| issn | 2666-9528 |
| language | English |
| last_indexed | 2024-04-11T04:50:03Z |
| publishDate | 2020-12-01 |
| publisher | KeAi Communications Co. Ltd. |
| record_format | Article |
| series | Green Chemical Engineering |
| spelling | doaj.art-812097902b324547aaf618c2de0722712022-12-27T04:39:34ZengKeAi Communications Co. Ltd.Green Chemical Engineering2666-95282020-12-0112109116Design of quaternary ammonium type-ionic liquids as desiccants for an air-conditioning systemSho Maekawa0Ryo Matsumoto1Kenta Ito2Toshiki Nokami3Jian-Xin Li4Hiroshi Nakayama5Toshiyuki Itoh6Department of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University, JapanDepartment of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University, JapanDepartment of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University, JapanDepartment of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University, Japan; Center for Research on Green Sustainable Chemistry, Tottori University, 4-101 Koyama-minami, Tottori, 680-8552, JapanState Key Lab of Analytical Chemistry for Life Science, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, PR ChinaChubu Electric Power Co. Inc. Research and Development Division, Advanced Research and Innovation Center, 20-1 Kitasekiyama Ohtaka-cho, Midori-ku, Nagoya, 459-8522, JapanDepartment of Chemistry and Biotechnology, Graduate School of Engineering, Tottori University, Japan; Toyota Physical and Chemical Research Institute, 41-1 Yokomichi, Nagakute City, Aichi, 480-1192, Japan; Corresponding author.The liquid desiccant air-conditioning system allows reducing energy consumption compared to the conventional compressor-type air conditioners. In order to develop desiccant materials for air conditioners, we have investigated the dehumidification capability of quaternary ammonium Ionic Liquids (ILs) and the equilibrium water vapor pressure of aqueous solutions of these ammonium salts. Among the seven tested types of ILs, 2-hydroxy-N,N,N-trimethylethan-1-aminium dimethylphosphate ([Ch][DMPO4]) displayed the best dehumidification capability and the lowest equilibrium water vapor pressure. Furthermore, the 80% aqueous solution of [Ch][DMPO4] exhibited a less corrosive effect on four types of metals, i.e., steel (hot dip zinc-aluminum alloy plated steel), copper (C1100P), aluminum (A5052), and stainless steel (SUS: SUS304). It should be noted that this [Ch][DMPO4] is not only non-toxic but also exhibits a stable nature; the aqueous solution produced no odor after storing for over 1 year under ambient conditions.http://www.sciencedirect.com/science/article/pii/S2666952820300182DehumidificationLiquid desiccantCholine type ionic liquidAir-conditioner system |
| spellingShingle | Sho Maekawa Ryo Matsumoto Kenta Ito Toshiki Nokami Jian-Xin Li Hiroshi Nakayama Toshiyuki Itoh Design of quaternary ammonium type-ionic liquids as desiccants for an air-conditioning system Green Chemical Engineering Dehumidification Liquid desiccant Choline type ionic liquid Air-conditioner system |
| title | Design of quaternary ammonium type-ionic liquids as desiccants for an air-conditioning system |
| title_full | Design of quaternary ammonium type-ionic liquids as desiccants for an air-conditioning system |
| title_fullStr | Design of quaternary ammonium type-ionic liquids as desiccants for an air-conditioning system |
| title_full_unstemmed | Design of quaternary ammonium type-ionic liquids as desiccants for an air-conditioning system |
| title_short | Design of quaternary ammonium type-ionic liquids as desiccants for an air-conditioning system |
| title_sort | design of quaternary ammonium type ionic liquids as desiccants for an air conditioning system |
| topic | Dehumidification Liquid desiccant Choline type ionic liquid Air-conditioner system |
| url | http://www.sciencedirect.com/science/article/pii/S2666952820300182 |
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