DSC measurements of water confined within silica gel pores

2013 Fiscal Year Final Research Report

• Project/Area Number: 23540480
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Biophysics/Chemical physics
• Research Institution: Nihon University
• Principal Investigator: FUJIMORI Hiroki 日本大学, 文理学部, 教授 (80297762)
• Project Period (FY): 2011 – 2013
• Keywords: 水 / 熱測定 / シリカゲル / 高圧 / 相転移 / ガラス転移

Research Abstract

Differential scanning calorimetry measurements of water and NaCl, KCl, and CaCl2 aqueous solutions, confined within mesoporous silica of pore diameter 1.4–45.7 nm, were performed. The freezing temperature of water within the pores decreased with decreasing pore diameter. The fusion entropy of the water within the pores, estimated from the concentration dependence of the freezing temperature of the aqueous solutions, corresponded with the fusion entropy of bulk water.

Research Products

• [Journal Article] 熱力学の視点から見た多孔質岩の熱物性精密測定と微小空孔の評価 (2012)
  • Author(s): 伊東良晴, 藤森裕基, 名古屋啓太, 竹村貴人
  • Journal Title: 第13回岩の力学国内シンポジウム&第6回日韓ジョイントシンポジウム 講演論文集 Pages: 793-796
  • Peer Reviewed
• [Journal Article] Freezing of Ring-Puckering Molecular Motion and Giant Dielectic Anomalies in Metal-Organic Perovskites (2012)
  • Author(s): Y. Imai, B. Zhou, Y. Ito, H. Fujimori, A. Kobayashi, Z.-M. Wang, H. Kobayashi
  • Journal Title: Chem. Asian J Volume: 7 Pages: 2786-2790
  • Peer Reviewed
• [Journal Article] Estimation of the pore diameter of organosilane- modified silica based on the fusion temperature of ice (2011)
  • Author(s): K. Oodo, T. Masuda, H. Fujimori
  • Journal Title: J. Non-Cryst. Solids Volume: 357 Pages: 683-685
  • Peer Reviewed
• [Journal Article] ^<13>C high-resolution NMR study of the effect of the deuterium isotope on liquid crystal CBOOA-d_<17> (2011)
  • Author(s): S. Hagiwara, H. Fujimori
  • Journal Title: J. Non-Cryst. Solids Volume: 357 Pages: 746-748
  • Peer Reviewed
• [Journal Article] Stabilization processes of metastable crystalline phases in 2, 5-dichlorothiophene (2011)
  • Author(s): N. Tanimoto, H. Fujimori
  • Journal Title: J. Non-Cryst. Solids Volume: 357 Pages: 731-733
  • Peer Reviewed
• [Journal Article] Anomalous Dielectric Behavior and Thermal Motion of Water Molecules Confined in Channels of Porous Coordination Polymer Crystals (2011)
  • Author(s): B. Zhou, A. Kobayashi, H.-B. Cui, L.-S. Long, H. Fujimori, and H. Kobayashi
  • Journal Title: J. Am. Chem. Soc Volume: 133 Pages: 5736-5739
  • Peer Reviewed
• [Presentation] Phase diagrams of citric acid and sodium-citrate aqueous solutions (2013)
  • Author(s): Yamamoto, A.; Nagoe, A.; Fujimori, H
  • Organizer: The Fifth International Symposium on New Frontiers of Thermal Studies of Materials
  • Place of Presentation: Yokohama (Japan)
  • Year and Date: 20131027-29
• [Presentation] Thermal behavior of water confined to exterior and interior of pores in diatomite powder (2013)
  • Author(s): Ito, Y.; Nagoe, A.; Fujimori, H.; Takemura, T
  • Organizer: The Fifth International Symposium on New Frontiers of Thermal Studies of Materials
  • Place of Presentation: Yokohama (Japan)
  • Year and Date: 20131027-29
• [Presentation] Fusion of ice in three kinds of sodium citrate aqueous solutions (2013)
  • Author(s): Yamamoto, A.; Nagoe, A.; Fujimori, H
  • Organizer: The 7th. International Discussion Meeting on Relaxation in Complex Systems
  • Place of Presentation: Barcelona (Spain)
  • Year and Date: 20130721-26
• [Presentation] Thermal analysis in the study of the adsorption water in layer structure of clay mineral (2013)
  • Author(s): Ito, Y.; Fujimori, H.; Takemura, T
  • Organizer: 7th. International Discussion Meeting on Relaxation in Complex Systems
  • Place of Presentation: Barcelona (Spain)
  • Year and Date: 20130721-26
• [Presentation] Thermal behavior of the adsorption water in boring-core samples from Setagaya, Tokyo, Japan (2012)
  • Author(s): Ito, Y.; Fujimori, H.; Takemura, T
  • Organizer: 15th International Congress on Thermal analysis and Calorimetry
  • Place of Presentation: Osaka (Japan)
  • Year and Date: 20120820-24
• [Presentation] Thermal properties of an aqueous solution of sodium dihydrogen citrate (2012)
  • Author(s): Yamamoto, A.; Nagoe, A.; Fujimori, H
  • Organizer: 15th International Congress on Thermal analysis and Calorimetry
  • Place of Presentation: Osaka (Japan)
  • Year and Date: 20120820-24
• [Presentation] Thermal behavior of the adsorption water in clay mineral (2012)
  • Author(s): Ito, Y.; Fujimori, H.; Takemura, T
  • Organizer: The 2012 International Conference on Chemical Thermodynamics and The 67th Calorimetry Conference
  • Place of Presentation: Búzios (Brazil)
  • Year and Date: 20120805-10
• [Presentation] Phase diagram of an aqueous solution of sodium dihydrogen citrate (2012)
  • Author(s): Yamamoto, A.; Nagoe, A.; Fujimori, H
  • Organizer: The 2012 International Conference on Chemical Thermodynamics and The 67th Calorimetry Conference
  • Place of Presentation: Búzios (Brazil)
  • Year and Date: 20120805-10
• [Presentation] Thermodynamical properties of sucrose-water solution confined within mesoporous silica (2011)
  • Author(s): Nishizawa, M.; Urano, A.; Fujimori, H
  • Organizer: Unifying concepts in glass physics V
  • Place of Presentation: Paris (France)
  • Year and Date: 20111212-16
• [Presentation] DSC measurements of water confined within mesoporous silica in cooling and heating processes (2011)
  • Author(s): Yokota, D.; Oodo, K.; Fujimori, H
  • Organizer: Unifying concepts in glass physics V
  • Place of Presentation: Paris (France)
  • Year and Date: 20111212-16
• [Presentation] DSC measurements of sucrose-water solution confined within mesoporous silica (2011)
  • Author(s): Nishizawa, M.; Urano, A.; Fujimori, H
  • Organizer: 6th International & 8th Japan-China Joint Symposium on Calorimetry and Thermal Analysis
  • Place of Presentation: Tokyo (Japan)
  • Year and Date: 20110801-04