SGER: Measuring Gas Hydrate Phase Composition with Raman Spectroscopy

SGER：用拉曼光谱测量气体水合物相组成

• 批准号: 9527420
• 负责人: E. Dendy Sloan
• 金额: $ 3.5万
• 依托单位: Colorado School of Mines
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-01-01 至 1996-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9527420&HistoricalAwards=false
• 关键词: SGER; Measuring; Gas; Hydrate; Phase

ABSTRACT CTS-9527420 E. Dendy Sloan Colorado School of Mines A new state-of-the-art for hydrate experiments is proposed by demonstrating measurements of the hydrate phase structure and composition, using Raman spectroscopy. The work will have two major impacts: 1. The hydrate structure is virtually never measured but predicted. There are multiple instances in which the incorrect hydrate structure has been predicted. With at least three common hydrate structures, the incorrect structure (and associated formation conditions) is predicted more frequently than commonly realized. We intend the proposed work to demonstrate how this problem may be corrected. 2. The hydrate phase composition (both the guest-to-host ratio and guest-to-guest composition) is also predicted rather than measured. However, such measurements are necessary to correct the existing thermodynamic model since hydrate formation conditions depend not only on structure but also on the phase composition.

摘要Cts-9527420 E.Dendy Sloan Colorado School of Mines通过使用拉曼光谱测量水合物的相结构和组成，提出了一种新的最先进的水合物实验方法。这项工作将有两个主要影响：1。水合物的结构实际上从未被测量过，但却被预测过。在许多情况下，预测了错误的水合物结构。对于至少三种常见的水合物结构，不正确的结构(以及相关的形成条件)被预测的频率比通常认识到的更高。我们打算通过拟议的工作来演示如何纠正这一问题。2.水合物的相组成(客体比和客体组成)也是预测的，而不是测量的。然而，这种测量对于修正现有的热力学模型是必要的，因为水合物的形成条件不仅取决于结构，而且还取决于相组成。