Separation of gas molecule using tetra-n-butyl ammonium bromide semi-clathrate hydrate crystals

被引：177

作者：

Shimada, W ^{[1
]}

Ebinuma, T ^{[1
]}

Oyama, H ^{[1
]}

Kamata, Y ^{[1
]}

Takeya, S ^{[1
]}

Uchida, T ^{[1
]}

Nagao, J ^{[1
]}

Narita, H ^{[1
]}

机构：

[1] Natl Inst Adv Ind Sci & Technol, Sapporo, Hokkaido 0628517, Japan

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS | 2003年 / 42卷 / 2A期

关键词：

clathrate hydrate; tetra-n-butyl ammonium bromide (TBAB); empty dodecahedral cage; separation of gas molecule;

D O I：

10.1143/JJAP.42.L129

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Tetra-n-butyl ammonium bromide (TBAB) forms a semi-clathrate hydrate crystal with water molecules even under atmospheric pressure. We found that TBAB hydrate could encage methane molecules in mixtures of methane and propane or methane and ethane. Our preliminary result of single-crystal analysis using X-ray shows that TBAB hydrate has empty cages, all of which are small, dodecahedral cages. Therefore, TBAB hydrate crystals can be used to separate small gas molecules which fit in these dodecahedral cages. We concluded that these empty unisized cages of TBAB hydrate crystals function as a sieve for gas molecules.

引用

页码：L129 / L131

页数：3