01643nab a2200205 4500 20260520000836.0 260224s2009 xxu Gas hydrate formation in a variable volume bed of silica sand particles nov./dic. 2009 08/06/2010 ; 08/06/2010 11 p. ; 5496-5507 Transcripción del resumen del autor. Gas hydrate formation was studied in a new apparatus designed to accommodate three different size volume beds of silica sand particles. The sand particles have an average diameter equal to 329 µm. The hydrate was formed in the water, which occupied the interstitial space of the water-saturated silica sand bed. A bulk gas phase was present above the bed (gas cap). Gas uptake measurements were carried out during experiments at constant temperature. More than 74.0% of water conversion to hydrate was achieved in all experiments conducted with methane at 4.0 and 1.0 °C. An initial slow growth was followed by a rapid hydrate growth rate of equal magnitude for nearly all experiments until 43-53% of water was converted to hydrate. During the third and final growth stage, the final conversions were between 74 and 98% and the conversion dynamics changed. Independent verification of hydrate formation in the sand was achieved via Raman spectroscopy and morphology observations in experiments using the same sand/water system. 6 Energy & fuels 23 ARTICULO Linga, Praveen 42267 Haligva, Cef 42268 Chan Nam, Sung 42269 170782 170782 0 0 0 0 238601 BAAB BAAB 2026-03-05 200045636 0 200045636 2026-03-05 15:12:57 2026-03-05 ARTICULO