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

页码：1107 / 1113

页数：7

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