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Title: Mechanism of methane hydrate formation in the presence of hollow silica
Authors: Veluswamy, Hari Prakash
Prasad P.S.R.
Linga P.
Published in: Korean Journal of Chemical Engineering
Abstract: Methane hydrates are studied extensively as a prospective medium for storing and transporting natural gas due to their inherent advantages, including high volumetric energy storage density, being environmentally benign and extremely safe method compared to conventional compression and liquefaction methods. Enhanced formation kinetics of methane hydrates has been reported in hollow silica due to the increased gas/liquid contact surface area available for efficient conversion of water to hydrates. This work elucidates the mechanism of methane hydrate formation in light weight hollow silica. Hollow silica-to-water ratio was varied and its effect on the methane hydrate formation/dissociation morphology was observed. There exists a critical hollow silica-to-water ratio (1: 6) beyond which the hydrates preferentially crystallize on the top of the bed by drawing water from the interstitial pores, whereas below this ratio the hydrate formation occurs within the bed between inter-particular spaces of hollow silica. Due to the very low bulk density, a small fraction of hollow silica was observed to be displaced from the bed during the hydrate formation above the critical hollow silica to water ratio. © by The Korean Institute of Chemical Engineers.
Citation: Korean Journal of Chemical Engineering(2016), 33(7): 2050-2062
Issue Date: 2016
Publisher: Springer New York LLC
Keywords: Gas hydrates
Gas storage
Hollow silica
Methane hydrate
ISSN: 2561115
Author Scopus IDs: 55603750900
Author Affiliations: Veluswamy, H.P., Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, 117 585, Singapore
Prasad, P.S.R., Gas Hydrate Division, National Geophysical Research Institute, Council for Scientific and Industrial Research, Uppal Road, Hyderabad, 500 007, India
Linga, P., Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, 117 585, Singapore
Funding Details: The financial support from the National University of Singapore (R-279-000-420-750, R-261-508-001-646 and R-261-508-001-733) is greatly appreciated. Dr. PSR Prasad would like to thank the Director of the National Geophysical Research Institute in Hyderabad for his constant encouragement and support. Dr. PSR Prasad further acknowledges GEOSCAPE project of NGRI under the 12th Five Year Scientific Program of CSIR for financial support.
Corresponding Author: Linga, P.; Department of Chemical and Biomolecular Engineering, National University of SingaporeSingapore; email:
Appears in Collections:Journal Publications [CH]

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