@conference { ISI:000375936100396,
	title = {Impact of pressure and temperature on tetra-n-butyl ammonium bromide semi-clathrate process for carbon dioxide capture},
	booktitle = {International Conference on Applied Energy, ICAE2014},
	series = {Energy Procedia},
	volume = {61},
	year = {2014},
	note = {6th International Conference on Applied Energy (ICAE), Taipei, TAIWAN, MAY 30-JUN 02, 2014},
	month = {MAY},
	pages = {1780-1783},
	publisher = {Elsevier Science BV},
	organization = {Elsevier Science BV},
	address = {Sara Burgerhartstraat 25, Po Box 211, 1000 AE Amsterdam, Netherlands},
	abstract = {<p>The pre-combustion capture of CO2 in an IGCC power plant employing the hydrate based gas separation (HBGS) process is a novel method currently receiving attention around the world. Tetra-n-butyl ammonium bromide (TBAB) is a promoter that has been shown to improve the efficiency of hydrate formation. In this study, the effect of temperature and pressure on 0.3 mol\% TBAB solution is investigated. The induction time for the experiments conducted at 6.0 MPa and 274.8 K was found to be lower, while nucleation became increasingly random as temperature is increased and pressure is reduced. Total gas uptake and normalized rate of hydrate formation (NR5) is also the highest for the experiments conducted at 6.0 MPa and 274.8 K. However, it was found that the hydrate phase CO2 composition remains relatively constant at both reduced temperatures and pressures. (C) 2014 The Authors. Published by Elsevier Ltd.</p>},
	keywords = {Carbon dioxide capture, Clathrate process, Gas hydrates, Gas separation, Promoters, tetra-n-butyl ammonium bromide},
	issn = {1876-6102},
	doi = {10.1016/j.egypro.2014.12.211},
	author = {Babu, Ponnivalavan and Chin, Weng Inn and Kumar, Rajnish and Linga, Praveen},
	editor = {Yan, J. and Lee, D. J. and Chou, S. K. and Desideri, U. and Li, H.}
}
@article { ISI:000333551200039,
	title = {Systematic evaluation of tetra-n-butyl ammonium bromide (TBAB) for carbon dioxide capture employing the clathrate process},
	journal = {Industrial \& Engineering Chemistry Research},
	volume = {53},
	number = {12},
	year = {2014},
	month = {MAR},
	pages = {4878-4887},
	publisher = {AMER CHEMICAL SOC},
	address = {1155 16TH ST, NW, WASHINGTON, DC 20036 USA},
	abstract = {<p>Hydrate based gas separation (HBGS) process for the precombustion capture of CO2 from a fuel gas mixture is a novel method being investigated among the carbon capture and sequestration techniques to reduce CO2 emissions. The efficiency of the HGBS process can be improved by using promoters that reduce the formation pressure of mixed gas hydrates. In this study the effect of tetra-n-butyl ammonium bromide (TBAB) was systematically investigated at a constant temperature of 279.2 K and pressure of 6.0 MPa for different TBAB concentrations of 0.3, 1.0, 1.5, 2.0, and 3.0 mol \%, respectively. The 0.3 mol \% solutions had a relatively longer average induction time of 20.1 min but exhibited the highest total normalized gas uptake of 0.0104 (+/- 0.0004) mol of gas/mol of water and highest separation factor of 41.51 (+/- 6.391). On the other hand, the 1.0 mol \% solution had very short average induction time (\&lt;0.5 min) and it had the highest hydrate growth rate of 60.8 (+/- 9.89) mol of gas. min(-1).m(-3), with the separation factor of 13.78 (+/- 3.30). Gas solubility measurements and microscopic images of the hydrate formation were also presented to provide greater insights into the effect of TBAB concentration on the gas uptake.</p>},
	issn = {0888-5885},
	doi = {10.1021/ie4043714},
	author = {Babu, Ponnivalavan and Chin, Weng Inn and Kumar, Rajnish and Linga, Praveen}
}
