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Please use this identifier to cite or link to this item: http://repository.iitr.ac.in/handle/123456789/2089
Title: Effect of guest gas on the mixed tetrahydrofuran hydrate kinetics in a quiescent system
Authors: Veluswamy H.P.
Kumar A.
Premasinghe K.
Linga P.
Published in: Applied Energy
Abstract: Clathrate hydrates are ‘inclusion compounds’ that have the ability to encompass multifold volumes of guest gas molecules, thus being advantageous for gas storage and gas separation applications. CO2 capture in the form of hydrates is an environmentally benign and cost-effective approach. In this work, we examine the kinetics of CO2 hydrate formation at different operating conditions that result in the formation of pure sI hydrate, pure sII hydrates and/or a mixture of sI and sII hydrates. Morphology observations of different hydrates formed are presented with the associated CO2 uptake achieved under different experimental conditions. We report strikingly contrasting morphology of mixed CO2 and mixed CH4 hydrates observed in presence of stoichiometric THF (5.6 mol%) under similar pressure diving force and operating conditions. Interesting results observed during mixed CO2 hydrates using Differential Scanning Calorimetry (DSC) are documented. Based on DSC thermograms, we report interesting observations on the effect of guest gas in the mixed THF hydrate formation and dissociation. Moreover, mixed CH4/THF hydrates were found to be more stable in comparison to mixed CO2/THF hydrates. This work highlights that the choice of guest gas plays a significant role in the associated hydrate formation kinetics in presence of THF. © 2017 Elsevier Ltd
Citation: Applied Energy(2017), 207(): 573-583
URI: https://doi.org/10.1016/j.apenergy.2017.06.101
http://repository.iitr.ac.in/handle/123456789/2089
Issue Date: 2017
Publisher: Elsevier Ltd
Keywords: Carbon dioxide capture
Differential scanning calorimetry
Formation kinetics
Gas hydrates
Hydrate morphology
ISSN: 3062619
Author Scopus IDs: 55603750900
55547117281
57194541396
57189447961
Author Affiliations: Veluswamy, H.P., Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, 117 585, Singapore
Kumar, A., Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, 117 585, Singapore
Premasinghe, K., Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, 117 585, Singapore
Linga, P., Department of Chemical and Biomolecular Engineering, National University of Singapore, Singapore, 117 585, Singapore
Funding Details: The work was funded in part under the Energy Innovation Research Programme (EIRP, Award No. NRF2015EWTEIRP002-002 ), administrated by the Energy Market Authority ( EMA ) and funded by the National Research Foundation ( NRF ) of Singapore. Appendix A
Corresponding Author: Linga, P.; Department of Chemical and Biomolecular Engineering, National University of SingaporeSingapore; email: praveen.linga@nus.edu.sg
Appears in Collections:Journal Publications [CH]

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