温度和甲烷压力对 300-1100 cm-1 范围内正丁烷拉曼波段光谱特性的影响

IF 0.7 4区化学 Q4 CHEMISTRY, PHYSICAL

Russian Journal of Physical Chemistry A Pub Date : 2024-07-02 DOI:10.1134/S0036024424700031

A. S. Tanichev, D. V. Petrov, I. I. Matrosov, A. R. Zaripov

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引用次数: 0

摘要

摘要在温度为 285 至 365 K 和甲烷压力为 2-40 atm 的条件下，研究了正丁烷在 300-1100 cm-1 光谱范围内振动带的光谱特性变化。结果表明，正丁烷在气相中的跨高热转变焓为 657 ± 66 卡/摩尔。在给定范围内，甲烷压力对正丁烷构象平衡的影响可以忽略不计。确定了正丁烷光谱特性的变化对使用拉曼光谱测量天然气成分的准确性的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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

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

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.

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来源期刊

Russian Journal of Physical Chemistry A 化学-物理化学

CiteScore

1.20

自引率

14.30%

发文量

376

审稿时长

5.1 months

期刊介绍： Russian Journal of Physical Chemistry A. Focus on Chemistry (Zhurnal Fizicheskoi Khimii), founded in 1930, offers a comprehensive review of theoretical and experimental research from the Russian Academy of Sciences, leading research and academic centers from Russia and from all over the world. Articles are devoted to chemical thermodynamics and thermochemistry, biophysical chemistry, photochemistry and magnetochemistry, materials structure, quantum chemistry, physical chemistry of nanomaterials and solutions, surface phenomena and adsorption, and methods and techniques of physicochemical studies.