Coexistence of structure I and II hydrates formed from a mixture of methane and ethane gases

被引：49

作者：

Takeya, S

Kamata, Y

Uchida, T

Nagao, J

Ebinuma, T

Narita, H

Hori, A

Hondoh, T

机构：

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

[2] Hokkaido Univ, Inst Low Temp Sci, Sapporo, Hokkaido 0600819, Japan

来源：

CANADIAN JOURNAL OF PHYSICS | 2003年 / 81卷 / 1-2期

关键词：

D O I：

10.1139/P03-038

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

X-ray diffraction measurements were conducted to determine the hydrate structures formed from a mixture of CH4 and C2H6 gases at 263 K. With increasing initial fractions of C2H6 in the gas, the crystal structures of the hydrate were structure I, structure I + structure II, structure II, structure I + structure II, and structure I. In situ observations of the growth processes of the mixed gas hydrates under constant gas concentration suggest that the coexistence of structure I and structure II hydrate were caused by occurrences of metastable hydrate structure.

引用

页码：479 / 484

页数：6

共 10 条

[1]

Deaton W. M., 1946, US BUR MINES MONOGR, V8, P101

[2] HYDRATE DISSOCIATION PRESSURES OF (METHANE + ETHANE + WATER) - EXISTENCE OF A LOCUS OF MINIMUM PRESSURES [J].