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Title: Freezing-memory effect of water on nucleation of CO{sub 2} hydrate crystals

Abstract

The authors measured the times to nucleate CO{sub 2} hydrates from CO{sub 2} dissolved water under pressure and 8.6 K supercooling using different methods to prepare the water. These times ranged from 50 min to more than 7,200 min, depending on the preparation method. The nucleation rates were calculated by fitting the observed nucleation probability distributions to a nucleation rate equation. The nucleation rates significantly increased when the water had previously frozen as ice and melted (freezing-memory effect), except when the meltwater was heated to 298 K before nucleation. The nucleation rates also increased with O{sub 2}-saturated meltwater, but decreased with degassed water.

Authors:
; ; ;
Publication Date:
Research Org.:
Hokkaido Univ., Sapporo (JP)
OSTI Identifier:
20050845
Resource Type:
Journal Article
Journal Name:
Journal of Physical Chemistry B: Materials, Surfaces, Interfaces, amp Biophysical
Additional Journal Information:
Journal Volume: 104; Journal Issue: 17; Other Information: PBD: 4 May 2000; Journal ID: ISSN 1089-5647
Country of Publication:
United States
Language:
English
Subject:
03 NATURAL GAS; CARBON DIOXIDE; GAS HYDRATES; NUCLEATION; WATER; FREEZING

Citation Formats

Takeya, Satoshi, Hori, Akira, Hondoh, Takeo, and Uchida, Tsutomu. Freezing-memory effect of water on nucleation of CO{sub 2} hydrate crystals. United States: N. p., 2000. Web. doi:10.1021/jp993759+.
Takeya, Satoshi, Hori, Akira, Hondoh, Takeo, & Uchida, Tsutomu. Freezing-memory effect of water on nucleation of CO{sub 2} hydrate crystals. United States. doi:10.1021/jp993759+.
Takeya, Satoshi, Hori, Akira, Hondoh, Takeo, and Uchida, Tsutomu. Thu . "Freezing-memory effect of water on nucleation of CO{sub 2} hydrate crystals". United States. doi:10.1021/jp993759+.
@article{osti_20050845,
title = {Freezing-memory effect of water on nucleation of CO{sub 2} hydrate crystals},
author = {Takeya, Satoshi and Hori, Akira and Hondoh, Takeo and Uchida, Tsutomu},
abstractNote = {The authors measured the times to nucleate CO{sub 2} hydrates from CO{sub 2} dissolved water under pressure and 8.6 K supercooling using different methods to prepare the water. These times ranged from 50 min to more than 7,200 min, depending on the preparation method. The nucleation rates were calculated by fitting the observed nucleation probability distributions to a nucleation rate equation. The nucleation rates significantly increased when the water had previously frozen as ice and melted (freezing-memory effect), except when the meltwater was heated to 298 K before nucleation. The nucleation rates also increased with O{sub 2}-saturated meltwater, but decreased with degassed water.},
doi = {10.1021/jp993759+},
journal = {Journal of Physical Chemistry B: Materials, Surfaces, Interfaces, amp Biophysical},
issn = {1089-5647},
number = 17,
volume = 104,
place = {United States},
year = {2000},
month = {5}
}