Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 134, Issue 48, Pages 19544-19547Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja309117d
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Funding
- National Science Foundation [CHE-1125235, CBET-1159746]
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [1125235] Funding Source: National Science Foundation
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Methane hydrates are ice-like inclusion compounds with importance to the oil and natural gas industry, global climate change, and gas transportation and storage. The molecular mechanism by which these compounds form under conditions relevant to industry and nature remains mysterious. To understand the mechanism of methane hydrate nucleation from super-saturated aqueous solutions, we performed simulations at controlled and realistic supersaturation. We found that critical nuclei are extremely large and that homogeneous nucleation rates are extremely low. Our findings suggest that nucleation of methane hydrates under these realistic conditions cannot occur by a homogeneous mechanism.
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