2011 Fiscal Year Final Research Report
Improvement and Evaluation of Micro-porous Crystals for Heat Pump Absorbents
| Project/Area Number |
21560846
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Earth system and resources enginnering
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| Research Institution | Yamaguchi University |
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Principal Investigator |
FUJIWARA Keiko 山口大学, 大学院・理工学研究科, 助手 (50253175)
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| Co-Investigator(Renkei-kenkyūsha) |
NAKAYAMA Noriaki 山口大学, 大学院・理工学研究科, 教授 (00164369)
NAKATSUKA Akihiko 山口大学, 大学院・理工学研究科, 准教授 (80294651)
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| Project Period (FY) |
2009 – 2011
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| Keywords | イオン交換 / 脱水温度 / マイクロポーラス結晶 / 排熱 |
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| Research Abstract |
Ion exchanged GTS-type titano-silicates with micro-porous structure have been prepared and their properties as water adsorbents for heat pump system have been investigated. Fine powders of Na-K mixed GTS with the mean size of 8～13φhave been prepared by the hydro-thermal method to investigated the effect of Na/ K composition. The hydration enthalpy of the water adsorption below 120℃was about 55 kJ/ mol, which was larger than the evaporation enthalpy of free H_2O at 25℃, 44 kJ/ mol. No apparent dependence on the Na/ K atomic ratio was observed. Co^<2+> exchanged Na-GTS samples were obtained by shaking Na-GTS fine powders in Co^<2+> aqueous solution. The maximum ion exchange ratio was 94%. By Co2+ exchange, the water content increased from 20. 5 to 24. 5% and the DTA peak temperature due to the dehydration was lowered from 253 to 230℃.
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[Journal Article] FT-IR and Raman spectroscopic study of GTS-type titanosilicate(H, K, Na)_4Ti_4Si_3O_<16> nH_2O
Author(s)
R. Titorenkova, N. Petrova, V. Kostov-Kytin, R. Nikolova, C. Kishimori, K. Fujiwara, T. Tamaki, A. Nakatsuka, N. Nakayama
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Journal Title
TOPICS IN CHEMISTRY AND MATERIAL SCIENCE
Volume: (印刷中)
Peer Reviewed
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[Presentation] GTS-type titanosilicate(H, K, Na)_4Ti_4Si_3O_<16>・nH_2O Raman and FTIR spectroscopy study2011
Author(s)
R. Titorenkova, C. Kishimori, K. Fujiwara, T. Tamaki, V. Kostov, R. Nikolova, A. Nakatsuka, N. Nakayama
Organizer
21^<th> Academic Symposium of MRS-J
Place of Presentation
横浜情報文化センター,横浜
Year and Date
2011-12-21
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[Presentation] FT-IR and Raman spectroscopic study of GTS-type titanosilicate(H, K, Na)_4Ti_4Si_3O_<16>・nH_2O2011
Author(s)
R. Titorenkova, N. Petrova, V. Kostov-Kytin, R. Nikolova, C. Kishimori, K. Fujiwara, N. Nakayama
Organizer
4^<rd> International Symposium Advanced microand mesoporous materials
Place of Presentation
Riviera hall, Golden Sands, Bulgaria
Year and Date
2011-09-09
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[Presentation] Hydration State of GTS-type Titanosilicate(K, Na, H)_4Ti_4Si_3O_<16>・nH_2O Fine Particles2009
Author(s)
K. Fujiwara, T. Shiode, K. Sugimoto, A. Nakatsuka, N. Nakayama, R. Nikolova, V. Kostov-Kytin
Organizer
3^<rd> International Symposium Advanced micro-and mesoporous materials
Place of Presentation
Hotel Flamingo Grand, Albena, Bulgaria
Year and Date
2009-09-07
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[Presentation] The Syudy of The Microstructures of GTS-type Titanosilicate(K, Na, H)_4Ti_4Si_3O_<16>・nH_2O Fine Particles2009
Author(s)
N. Nakayama, K. Fujiwara, T. Shiode, H. Sugimoto, A. Nakatsuka, R. Nikolova, V. Kostov-Kytin
Organizer
3^<rd> International Symposium Advanced micro-and mesoporous materials
Place of Presentation
Hotel Flamingo Grand, Albena, Bulgaria
Year and Date
2009-09-07
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