Spectroscopic observation of atomic hydrogen radicals entrapped in icy hydrogen hydrate.
Spectroscopic observation of atomic hydrogen radicals entrapped in icy hydrogen hydrate.
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冰冷的氢水合物中捕获的原子氢自由基的光谱观察。
DOI：
10.1021/ja802952p
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发表时间：
2008
影响因子：
15
通讯作者：
Huen Lee
中科院分区：
文献类型：
--
作者：
Sun;Jiwoong Seol;Youngjune Park;Dong;Y. Kang;Huen Lee
被捕获在冰氢水合物笼中的氢分子被限制在主体水框架中，因此其行为不同于纯固体或液体氢。首次从ESR和固态MAS ~ 1H NMR谱中观察到γ辐照氢自由基稳定存在于冰水合物通道中，而没有任何主体框架的崩溃，证实了电离氢衍生物的化学位移一致性。我们讨论了封闭的冰水合物通道，它可以作为潜在的存储站点，同时存储分子和离子化氢，并进一步作为冰冷的纳米反应器。
A hydrogen molecule entrapped in the cages of icy hydrogen hydrate is confined in host water framework and thus behaves unlike pure solid or liquid hydrogen. The gamma-irradiated hydrogen radicals are for the first time observed from ESR and solid-state MAS 1H NMR spectra to stably exist in the icy hydrate channels without any collapse of the host framework, confirming the chemical shift consistency of ionized hydrogen derivatives. We discuss the confined icy hydrate channels, which can act as potential storage sites for simultaneously imprisoning both molecular and ionized hydrogen and further as icy nanoreactors.