02138nas a2200241   4500008004100000022001400041245009000055210006900145260007100214300001400285490000600299520129500305653001501600653001601615653001501631653002901646653001801675100002601693700001901719700001901738700001901757856012001776       2015                        eng d  a2168-048500aCarbon dioxide sequestration: influence of porous media on hydrate formation kinetics0 aCarbon dioxide sequestration influence of porous media on hydrat  a1155 16TH ST, NW, WASHINGTON, DC 20036 USAbAMER CHEMICAL SOCcJUN  a1205-12140 v33 a<p>In the present study, CO, sequestration by hydrate formation in porous sediments has been discussed. Two siliceous materials with high porosities, pumice and fire hardened red clay (FHRC), have been used as packing materials in a fixed bed setup to study hydrate formation kinetics. The results obtained using the aforementioned materials were compared with those obtained using silica sand and quartz. Carbon dioxide hydrate formation kinetics was studied at 3.0 MPa pressure and 274 K temperature. Two different types of experiments were conducted: (a) using a constant volume of water and (b) maintaining a constant bed height. These experiments were conducted using the different porous media individually as packing materials. It was observed that pumice as the porous medium showed better hydrate formation kinetics resulting in 46 mol % water to hydrate conversion in 5 h. Moreover, kinetics was enhanced with decrease in the bed height of pumice; this suggests that at field scale adaptation of CO, sequestration in geological formations, mass transfer limitations would be significant. The effects of particle size on hydrate formation kinetics were also investigated. It was observed that hydrate formation kinetics was enhanced with decrease in the particle size fraction.</p>10aBed height10aGas hydrate10agas uptake10aGeological sequestration10aParticle size1 aBhattacharjee, Gaurav1 aKumar, Asheesh1 aSakpal, Tushar1 aKumar, Rajnish  uhttps://library.ncl.res.in/content/carbon-dioxide-sequestration-influence-porous-media-hydrate-formation-kinetics-0