期刊
VIBRATIONAL SPECTROSCOPY
卷 50, 期 2, 页码 319-323出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.vibspec.2009.02.003
关键词
Mixed hydrates; Tetrahydrofuran; Methane; Structural transformations; Laser micro-Raman spectroscopy
资金
- Ministry of Earth Science Systems
- Ministry of petroleum, oil and natural gas, Government of India
We report laser Raman spectroscopic measurements on mixed hydrates (clathrates), with guest molecules tetrahydrofuran (THF) and methane (CH4), at ambient pressure and at temperatures from 175 to 280 K. Gas hydrates were synthesized with different concentrations of THF ranging from 5.88 to 1.46 mol%. In all cases THF molecules occupied the large cages of A hydrate. The present studies demonstrate formation of A clathrates with CH4 molecules occupying unfilled cages for concentrations of THF ranging from 5.88 to 2.95 mol%. The Raman spectral signature of hydrates with 1.46 mol% THF are distinctly different; hydrate growth was non-uniform and structural transformation occurred from A to sl prior to clathrate melting. (c) 2009 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据