The coexistence of two different methane hydrate phases under moderate pressure and temperature conditions: Kinetic versus thermodynamic products

被引：137

作者：

Schicks, JM ^{[1
]}

Ripmeester, JA

机构：

[1] Geoforschungszentrum Potsdam Telegrafenberg, D-14473 Potsdam, Germany

[2] Natl Res Council Canada, Ripmeester Steacie Inst Mol Sci, Ottawa, ON, Canada

来源：

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2004年 / 43卷 / 25期

关键词：

gas hydrate; kinetics; Raman spectroscopy; thermodynamics;

D O I：

10.1002/anie.200453898

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The unexpected coexistence of structure I (s I) and structure II (s II) methane hydrates under conditions where only s I hydrates should be stable (see picture) suggests that the initial product is determined by kinetics. The state of coexistence as well as the transformation of the kinetic product into the thermodynamically stable s I hydrate was documented by microscopic visual observation as well as Raman spectroscopy.

引用

页码：3310 / 3313

页数：4

共 10 条

[1] Transformations in methane hydrates [J].

Chou, IM ;

Sharma, A ;

Burruss, RC ;

Shu, JF ;

Mao, HK ;

Hemley, RJ ;

Goncharov, AF ;

Stern, LA ;

Kirby, SH .

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2000, 97 (25) :13484-13487

[2]

Moudrakovski IL, 2001, ANGEW CHEM INT EDIT, V40, P3890, DOI 10.1002/1521-3773(20011015)40:20<3890::AID-ANIE3890>3.0.CO

[3]

2-T

[4] Nucleation and growth of hydrates on ice surfaces:: New insights from 129Xe NMR experiments with hyperpolarized xenon [J].

Moudrakovski, IL ;

Sanchez, AA ;

Ratcliffe, CI ;

Ripmeester, JA .

JOURNAL OF PHYSICAL CHEMISTRY B, 2001, 105 (49) :12338-12347

[5]

Pimental G., 1963, Pure Appl. Chem, V7, P111, DOI [10.1351/pac196307010111, DOI 10.1351/PAC196307010111]

[6]

Sloan E. D., 1998, CLATHRATE HYDRATES N

[7] Formation of porous gas hydrates from ice powders: Diffraction experiments and multistage model [J].

Staykova, DK ;

Kuhs, WF ;

Salamatin, AN ;

Hansen, T .

JOURNAL OF PHYSICAL CHEMISTRY B, 2003, 107 (37) :10299-10311

[8] Molecular measurements of methane hydrate formation [J].

Subramanian, S ;

Sloan, ED .

FLUID PHASE EQUILIBRIA, 1999, 158 :813-820

[9] Trends in vibrational frequencies of guests trapped in clathrate hydrate cages [J].

Subramanian, S ;

Sloan, ED .

JOURNAL OF PHYSICAL CHEMISTRY B, 2002, 106 (17) :4348-4355

[10]

VONSTACKELBERG M, 1954, Z ELEKTROCHEM, V58, P162

← 1 →