TY - GEN
T1 - Experimental apparatus for measurement of IR and Raman spectrum at high temperatures and pressures
AU - Abe, J.
AU - Hirano, N.
AU - Tsuchiya, N.
N1 - Copyright:
Copyright 2008 Elsevier B.V., All rights reserved.
PY - 2006/5/15
Y1 - 2006/5/15
N2 - In order to investigate effects of molecular behavior of water at interface on the rock surface, high temperature-pressure cell (up to 400 °C and 50 MPa) was developed to measure infrared and Raman, which was attached with optical microscopy, therefore, in situ and microscopic measurements were enable at high temperature and pressure conditions. Infrared properties of thin film water and interfacial water at rock surface were measured. As a result of infrared spectroscopic measurements of thin film water, the broad peak at ca. 3360 cm-1 of infrared spectra, attributed to OH stretching mode of water molecular, was observed at room temperature and pressure. Continuous shift of the OH vibration mode was obtained from room to hydrothermal conditions. These results indicate that changes of molecular structure of the water were detected by using newly designed high temperature-pressure cell. Compared with the result of infrared properties of thin film water, infrared properties of interfacial water at rock surface exhibit different trend: the peak position shifted to higher wavenumber with increasing temperature and did not shift with pressure. Molecular structure of interfacial water on the rock and rock-forming mineral at elevated temperatures and pressures were not only changes due to physical conditions such as temperature and pressure but also interaction between interfacial water and solid rock materials.
AB - In order to investigate effects of molecular behavior of water at interface on the rock surface, high temperature-pressure cell (up to 400 °C and 50 MPa) was developed to measure infrared and Raman, which was attached with optical microscopy, therefore, in situ and microscopic measurements were enable at high temperature and pressure conditions. Infrared properties of thin film water and interfacial water at rock surface were measured. As a result of infrared spectroscopic measurements of thin film water, the broad peak at ca. 3360 cm-1 of infrared spectra, attributed to OH stretching mode of water molecular, was observed at room temperature and pressure. Continuous shift of the OH vibration mode was obtained from room to hydrothermal conditions. These results indicate that changes of molecular structure of the water were detected by using newly designed high temperature-pressure cell. Compared with the result of infrared properties of thin film water, infrared properties of interfacial water at rock surface exhibit different trend: the peak position shifted to higher wavenumber with increasing temperature and did not shift with pressure. Molecular structure of interfacial water on the rock and rock-forming mineral at elevated temperatures and pressures were not only changes due to physical conditions such as temperature and pressure but also interaction between interfacial water and solid rock materials.
KW - High Temperature and pressures
KW - Hydrothermally derived fracturing
KW - IR spectroscopy
KW - Raman spectroscopy
KW - Thin film water
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U2 - 10.1063/1.2207090
DO - 10.1063/1.2207090
M3 - Conference contribution
AN - SCOPUS:33845581004
SN - 0735403279
SN - 9780735403277
T3 - AIP Conference Proceedings
SP - 129
EP - 132
BT - WATER DYNAMICS
T2 - WATER DYANMICS: 3rd International Workshop on Water Dynamics
Y2 - 16 November 2005 through 17 November 2005
ER -