The Raman spectroscopy of n-pentadecane is investigated in a moissanite anvil cell at normal temperatures and a diamond anvil cell under pressure to about 3000MPa and at temperature from 298 to 573K. Result indicates that at room temperature the vibration modes, assigned to the symmetric and asymmetric stretching of CH3 and CH2 stretching, shift to higher frequency and display a pressure dependent quasi-linear curve. A liquid--solid phase transition appears at a pressure of 150MPa. The high temperature solidus line of n-pentadecane follows a quadratic function of P=0.02369T2-9.117T+725.58, in agreement with previous conclusion derived from studies of other hydrocarbons. Upon phase transition, fitting the experimental data obtained in a temperature range of 283-553K to the Clausius--Clapeyron equation allows one to define the thermodynamic parameters of n-pentadecane of dP/dT=0.04738T -9.117.
The Raman spectroscopy of n-pentadecane is investigated in a moissanite anvil cell at normal temperatures and a diamond anvil cell under pressure to about 3000MPa and at temperature from 298 to 573K. Result indicates that at room temperature the vibration modes, assigned to the symmetric and asymmetric stretching of CH3 and CH2 stretching, shift to higher frequency and display a pressure dependent quasi-linear curve. A liquid--solid phase transition appears at a pressure of 150MPa. The high temperature solidus line of n-pentadecane follows a quadratic function of P=0.02369T2-9.117T+725.58, in agreement with previous conclusion derived from studies of other hydrocarbons. Upon phase transition, fitting the experimental data obtained in a temperature range of 283-553K to the Clausius--Clapeyron equation allows one to define the thermodynamic parameters of n-pentadecane of dP/dT=0.04738T -9.117.
QIAO Er-Wei;ZHENG Hai-Fei;XU Bei. Raman Scattering Spectroscopy of Phase Transition in n-Pentadecane under High Temperature and High Pressure[J]. 中国物理快报, 2009, 26(1): 10701-010701.
QIAO Er-Wei, ZHENG Hai-Fei, XU Bei. Raman Scattering Spectroscopy of Phase Transition in n-Pentadecane under High Temperature and High Pressure. Chin. Phys. Lett., 2009, 26(1): 10701-010701.
[1] Hunt J M 1996 Petroleum Geochemistry and Geology 2ndedn (New York: Freeman) [2] Dovnar D V, Lebedinskii Yu A, Khasanshin T S andShchemelev A P 2001 High Temp. 39 835 [3] Daridon J L, Carrier H and Lagourette 2002 Int. J.Thermophys. 23 697 [4] Qiao E W and Zheng H F 2007 Spectrosc. Spectrosc.Anal. 27 78 [5] Hu J Z, Xu J, Somayazulu M, Guo Q, Hemley R and Mao H K2002 J. Phys.: Condes. Matter 14 10479 [6] Xu J A, Mao H K, Hemley R J and Hines E 2002 J.Phys.: Condes. Matter 14 11543 [7] Xu J A, Mao H K, Hemley R J and Hines E 2004 Rev.Sci. Instrum. 75 1034 [8] Duan T Y, Sun Q and Zheng H F 2005 Spectrosc.Spectrosc. Anal. 25 902 [9] Bassett W A, Shen A H and Bucknum M 1993 Sci.Instrum. 64 2340 [10] Schmidt C and Ziemann M A 2000 Am. Miner. 851725 [11] Sterin K E 1980 Raman Spectra of Hydrocarbons(Oxford: Pergamon) [12] Lin-Vien D, Colthup N B, Fateley W G and Grasselli J G.1991 The Handbook of Infrared and Raman CharacteristicFrequencies of Organic Molecules (Boston: Academic) [13] Colthup N B, Daly L H and Wiberley S E 1990 Introduction to Infrared and Raman Spectroscopy (Boston: Academic) [14] Lambert J B, Shurvell H F, Lightner D A and Cooks R G1998 Organic Structural Spectroscopy (Englewood Cliffs, NJ: Prentice-Hall) [15] Lide D R 2005 CRC Handbook of Chemistry and Physics86th edn (Boca Raton, FL: CRC) [16] Doma\'nska U, Morawski P and Wierzbicki R 2006 FluidPhase Equilib. 242 154 [17] Du Z X and Zheng H F 2008 Chin. Phys. Lett. 25 1875 [18] Huang D H, Simon S L and McKenna G B 2005 J. Chem.Phys. 122 084907
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