Synthesis and Characterization of si Ciathrate Hydrates Containing Hydrogen

R. Gary Grim; Prasad B. Kerkar; Michele Shebowich

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Synthesis and Characterization of si Ciathrate Hydrates Containing Hydrogen

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Previously, large cage occupancy of H2 has only been confirmed in the structure II (sII) hydrate. Utilizing a hydrate synthesis pathway involving pressurizing preformed structure I (sI) hydrates, we now show H2 occupancy in both the small and the large cages of sI, as evidenced by powder X-ray diffraction and Raman spectroscopic measurements. The new H2 environments were determined to be singly and doubly occupied 5~(12)6~2 cages occurring at 4125—4131 and 4143—4149 cm~(-1), respectively. This work serves as proof-of-concept that, by altering the conventional hydrate synthesis procedure to incorporate preformed hydrates, it may be possible to promote the occupancy of H2 or possibly other guests in a desired structure through a "templating" effect by simply changing the initial hydrate structure.

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《The journal of physical chemistry, C. Nanomaterials and interfaces》 |2012年第34期|18557-18563|共7页
作者
R. Gary Grim; Prasad B. Kerkar; Michele Shebowich;
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Center for Hydrate Research, Chemical & Biological Engineering Department, Colorado School of Mines, Golden, Colorado 80401, United States;

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正文语种英语
中图分类物理化学（理论化学）、化学物理学;
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Synthesis and Characterization of si Ciathrate Hydrates Containing Hydrogen

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