Temperature and Methane Pressure Effects on the Spectral Characteristics of the Raman Bands of n-Butane in the Range 300-1100 cm-1

被引：0
作者：
Tanichev, A. S. [1 ]
Petrov, D. V. [1 ,2 ]
Matrosov, I. I. [1 ]
Zaripov, A. R. [1 ]
机构：
[1] Russian Acad Sci, Inst Monitoring Climat & Ecol Syst, Siberian Branch, Tomsk 634055, Russia
[2] Tomsk State Univ, Tomsk 634050, Russia
来源：
RUSSIAN JOURNAL OF PHYSICAL CHEMISTRY A | 2024年 / 98卷 / 06期
基金：
俄罗斯科学基金会;
关键词：
n-butane; methane; conformers; Raman scattering; temperature; pressure; POTENTIAL FUNCTION; ENTHALPY DIFFERENCE; INTERNAL-ROTATION; VIBRATIONAL-SPECTRA; ENERGY DIFFERENCE; NORMAL-ALKANES; SPECTROSCOPY; CONFORMATIONS; PENTANE; TRANS;
D O I：
10.1134/S0036024424700031
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Changes in the spectral characteristics of the vibrational bands of n-butane have been studied in the spectral range 300-1100 cm(-1) at a temperature varied from 285 to 365 K and a methane pressure varied in the range 2-40 atm. It was established that the enthalpy of the trans-gauche transition of n-butane in the gas phase is 657 +/- 66 cal/mol. The methane pressure in the given range was found to have a negligible effect on the conformational equilibrium of n-butane. The impact of changes in the spectral characteristics of n-butane on the accuracy of measuring the composition of natural gas using Raman spectroscopy was determined.
引用
收藏
页码：1107 / 1113
页数：7
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