4.3 Article

Methane hydrates formation and dissociation in nano silica suspension

Journal

Publisher

ELSEVIER SCI LTD
DOI: 10.1016/j.jngse.2012.11.004

Keywords

Methane hydrates; Methane storage; Dry water; Nano suspensions; Formation kinetics; Self-preservation

Funding

  1. Department of Science & Technology, Government of India
  2. Ministry of Earth Sciences (Gas Hydrates programme) and Directorate of Hydrocarbons (NGHP), Government of India
  3. DRDO - ASL, Government of India

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Methane gas hydrate (MH) formation/dissociation were investigated in nano silica and water system in a non-stirred reactor. The MH yield was significantly improved in the presence of nano silica. The overall methane hydrate conversion (>= 80%) was achieved by optimizing the nano silica to water ratio. Two-stage dissociation was observed after a rapid de-pressurization. Methane gas intake of this system was steady for multiple freezing-thawing cycles signifying improved stability for methane gas storage. (c) 2012 Elsevier B.V. All rights reserved.

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