The Melting Curve and High-Pressure Chemistry of Formic Acid to 8 GPa and 600 K [electronic resource]
We have determined the melting temperature of formic acid (HCOOH) to 8.5 GPa using infrared absorption spectroscopy, Raman spectroscopy and visual observation of samples in a resistively heated diamond-anvil cell. The experimentally determined melting curve compares favorably with a two-phase thermo...
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Online Access |
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| Format: | Government Document Electronic eBook |
| Language: | English |
| Published: |
Washington, D.C. : Oak Ridge, Tenn. :
United States. Department of Energy. ; distributed by the Office of Scientific and Technical Information, U.S. Department of Energy,
2005.
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| Subjects: |
| Summary: | We have determined the melting temperature of formic acid (HCOOH) to 8.5 GPa using infrared absorption spectroscopy, Raman spectroscopy and visual observation of samples in a resistively heated diamond-anvil cell. The experimentally determined melting curve compares favorably with a two-phase thermodynamic model. Decomposition reactions were observed above the melting temperature up to a pressure of 6.5 GPa, where principal products were CO₂, H₂O and CO. At pressures above 6.5 GPa, decomposition led to solid-like reaction products. Infrared and Raman spectra of these recovered products indicate that pressure affects the nature of carbon-carbon bonding. |
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| Item Description: | Published through SciTech Connect. 04/13/2005. "ucrl-jrnl-211413" Journal of Physical Chemistry B, N/A, N/A, January 10, 2008, pp. 2644-2648 FT. Montgomery, W; Jeanloz, R; Howard, W M; Crowhurst, J C; Goncharov, A F; Zaug, J M. |
| Physical Description: | PDF-file: 16 pages; size: 0.9 Mbytes. |