@article { ISI:000338806600067,
	title = {Enhanced kinetics for the clathrate process in a fixed bed reactor in the presence of liquid promoters for pre-combustion carbon dioxide capture},
	journal = {Energy},
	volume = {70},
	year = {2014},
	month = {JUN},
	pages = {664-673},
	publisher = {PERGAMON-ELSEVIER SCIENCE LTD},
	type = {Article},
	address = {THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND},
	abstract = {<p>In this work, we present enhanced kinetics of hydrate formation for the clathrate process in the presence of two liquid promoters namely THF (tetrahydrofuran) and TBAB (tetra-n-butyl ammonium bromide) in a FBR (fixed bed reactor) for pre-combustion capture of CO2. Silica sand was used as a medium to capture CO2 from CO2/H-2 gas mixture by hydrate crystallisation. Experiments were performed at different temperatures (274.2 K and 279.2 K) and 6.0 MPa to determine the total gas uptake, induction time and rate of hydrate formation. The observed trends indicated that higher driving force resulted in higher gas consumption and significantly reduced induction time. For the same driving force, higher gas consumption and shorter induction time was achieved by THF as compared to TBAB. 5.53 mol\% THF attained higher gas consumption than 1.0 mol\% THF whereas 3.0 mol\% TBAB attained lower gas consumption than 0.3 mol\% TBAB. A highest gas uptake of 51.95 (+/- 5.183) mmol of gas/mol of water and a highest rate of 51.21(+/- 8.91) mol.min(-1).m(-3) were obtained for 5.53 mol\% THF at 6.0 MPa and 279.2 K. Overall, this study indicated better hydrate formation kinetics with the use of THF in an FBR configuration for CO2 capture from a fuel gas mixture. (C) 2014 Elsevier Ltd. All rights reserved.</p>},
	keywords = {Carbon dioxide capture, Clathrate process, Fixed bed reactor, Gas hydrates, Pre-combustion capture, Promoters},
	issn = {0360-5442},
	doi = {10.1016/j.energy.2014.04.053},
	author = {Babu, Ponnivalavan and Ho, Chie Yin and Kumar, Rajnish and Linga, Praveen}
}
@article {47049,
	title = {Hydrate-based carbon capture process: assessment of various packed bed systems for boosted kinetics of hydrate formation},
	journal = {Journal of Energy Resources Technology-Transactions of the ASME},
	volume = {143},
	year = {2021},
	month = {MAR },
	pages = {033005},
	type = {Article},
	abstract = {<p>The case for developing novel technologies for carbon dioxide (CO2) capture is fast gaining traction owing to increasing levels of anthropogenic CO2 being emitted into the atmosphere. Here, we have studied the hydrate-based carbon dioxide capture and separation process from a fundamental viewpoint by exploring the use of various packed bed media to enhance the kinetics of hydrate formation using pure CO2 as the hydrate former. We established the fixed bed reactor (FBR) configuration as a superior option over the commonly used stirred tank reactor (STR) setups typically used for hydrate formation studies by showing enhanced hydrate formation kinetics using the former. For the various packing material studied, we have observed silica gel with 100 nm pore size to return the best kinetic performance, corresponding to a water to hydrate conversion of 28 mol\% for 3 h of hydrate growth. The fundamental results obtained in the present study set up a solid foundation for follow-up works with a more applied perspective and should be of interest to researchers working in the carbon dioxide capture and storage and gas hydrate fields alike.</p>
},
	keywords = {air emissions from fossil fuel combustion, Carbon dioxide capture, combustion of waste, Fixed bed reactor, fuel combustion, Gas hydrate, hydrates, kinetics, Silica gel},
	issn = {0195-0738},
	doi = {10.1115/1.4048304},
	author = {Arora, Amit and Kumar, Asheesh and Bhattacharjee, Gaurav and Balomajumder, Chandrajit and Kumar, Pushpendra}
}
