02022nas a2200313   4500008004100000022001400041245012300055210006900178260009900247300001400346490000700360520092100367653002701288653002201315653001701337653001901354653001401373653003501387100002301422700002001445700001901465700001901484700001201503700001601515700001701531700001701548700001101565856013201576       2014                        eng d  a1876-610200aImpact of pressure and temperature on tetra-n-butyl ammonium bromide semi-clathrate process for carbon dioxide capture0 aImpact of pressure and temperature on tetranbutyl ammonium bromi  aSara Burgerhartstraat 25, Po Box 211, 1000 AE Amsterdam, NetherlandsbElsevier Science BVcMAY  a1780-17830 v613 a<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>10aCarbon dioxide capture10aClathrate process10aGas hydrates10aGas separation10aPromoters10atetra-n-butyl ammonium bromide1 aBabu, Ponnivalavan1 aChin, Weng, Inn1 aKumar, Rajnish1 aLinga, Praveen1 aYan, J.1 aLee, D., J.1 aChou, S., K.1 aDesideri, U.1 aLi, H.  uhttps://library.ncl.res.in/content/impact-pressure-and-temperature-tetra-n-butyl-ammonium-bromide-semi-clathrate-process-carbon01990nas a2200181   4500008004100000022001400041245012600055210006900181260007100250300001400321490000700335520125300342100002301595700002001618700001901638700001901657856013201676       2014                        eng d  a0888-588500aSystematic evaluation of tetra-n-butyl ammonium bromide (TBAB) for carbon dioxide capture employing the clathrate process0 aSystematic evaluation of tetranbutyl ammonium bromide TBAB for c  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcMAR  a4878-48870 v533 a<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>1 aBabu, Ponnivalavan1 aChin, Weng, Inn1 aKumar, Rajnish1 aLinga, Praveen  uhttps://library.ncl.res.in/content/systematic-evaluation-tetra-n-butyl-ammonium-bromide-tbab-carbon-dioxide-capture-employing-0