Melt growth and inhibition of ethylene oxide clathrate hydrate

被引：14

作者：

Larsen, R

Knight, CA

Rider, KT

Sloan, ED ^{[1
]}

机构：

[1] Colorado Sch Mines, Ctr Hydrate Res, Golden, CO 80401 USA

[2] IKU Petr Res, Multiphase Flow Lab, N-7034 Trondheim, Norway

[3] Natl Ctr Atmospher Res, Boulder, CO 80307 USA

[4] Colorado Sch Mines, Ctr Hydrate Res, Golden, CO 80401 USA

来源：

JOURNAL OF CRYSTAL GROWTH | 1999年 / 204卷 / 03期

基金：

美国国家科学基金会;

关键词：

clathrate hydrates; single-crystal growth; ethylene oxide; growth inhibition;

D O I：

10.1016/S0022-0248(99)00209-2

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Growth and inhibition of single crystals of ethylene oxide clathrate hydrate provide experimental accessibility to similar phenomena in methane clathrate hydrates. Ethylene oxide hydrate single crystals were grown from the supercooled melt as rhombic dodecahedra, exhibiting {1 1 0} as the slowest growing face. The addition of poly(N-vinylcaprolactam) (PVCap) or a random terpolymer of PVCap, poly(N-vinylpyrrolidone), and dimethylaminoethyl-methacrylate causes small scale branching of crystals, but with a uniform crystal orientation. A few tenths of a weight percent of these additives cause complete crystal growth inhibition up to several degrees of supercooling. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：376 / 381

页数：6

共 13 条

[1]

[Anonymous], 1994, THESIS COLORADO SCH

[2] Characterisation of the {111} growth planes of a type II gas hydrate and study of the mechanism of kinetic inhibition by poly(vinylpyrrolidone) [J].