Reversible methane storage in porous hydrogel supported clathrates

Ding, Ailin; Yang, Ling; Fan, Shuanshi; Lou, Xia

doi:10.1016/j.ces.2013.03.050

Cited by 56 publications

(29 citation statements)

References 29 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To overcome the slow kinetics, continuous research efforts have been put forth in improving the kinetics of methane hydrate formation either by innovative reactor designs [14][15][16][17][18][19][20] including the use of different porous media [21][22][23][24][25][26][27][28][29] or the use of kinetic promoters (predominantly surfactants) in order to enhance the rate of hydrate formation [30][31][32][33][34][35]. Though the kinetics of hydrate formation is improved by a choice of suitable reactor or kinetic promoter, there is no reduction of the high energy requirement due to low temperature and high pressure conditions of hydrate formation.…”

Section: Introductionmentioning

confidence: 99%

Enhanced clathrate hydrate formation kinetics at near ambient temperatures and moderate pressures: Application to natural gas storage

Veluswamy

Kumar

et al. 2016

Fuel

184

135

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Enhanced clathrate hydrate formation kinetics at near ambient temperatures and moderate pressures: Application to natural gas storage

Veluswamy

Kumar

et al. 2016

Fuel

184

135

View full text Add to dashboard Cite

“…These findings were confirmed in another research with the focus on the gas storage application of dry water where the formation and dissociation rate and storage capacity of dry water methane hydrates were investigated (Hu et al, 2011). Recently a high capacity and improved reversibility was reported for a mixed colloidal system made of hydrogel particles and dry water particles (Ding et al, 2013).…”

Section: Introductionsupporting

confidence: 70%

“…They prepared DW by mixing water, hydrophobic fumed silica nanoparticles and air at high speed and demonstrated that this free flowing powder increased the kinetics of formation of gas hydrates for CO 2 , CH 4 and Kr. Hu et al (2011) investigated the gas storage application of DW methane hydrates and Ding et al (2013) examined the hydration kinetics and methane storage capacity of a mixed colloidal system made of hydrogel particles and DW droplets. Previously the salient mechanism for the formation of gas hydrates in DW was believed to be the large surface area/volume ratio of the highly dispersed water phase compared to the bulk water .…”

Section: Introductionmentioning

confidence: 99%

Kinetics of the formation of CO2 hydrates in the presence of sodium halides and hydrophobic fumed silica nanoparticles

Farhang¹

View full text Add to dashboard Cite

CO 2 capture by trapping the greenhouse gas in clathrates hydrates is proving to be one of the promising options for long term carbon storage. This technology is desirable as it can be deposited in the deep ocean where the suitable pressure and temperature is ready without any extra cost. To date, this method has mostly been of academic interest because the formation of gas hydrates is very slow and requires lots of energy and resources. It is important therefore to develop an efficient and economical process to be able to apply this method at an industrial scale. Scientists and researchers have been looking for suitable additives to accelerate the formation of CO 2 hydrate. To meet these objectives numerous additives have previously been tested and several were found to be suitable hydrate promoters. The mechanism for the formation of gas hydrates in the presence of additives is not clear yet. Understanding this mechanism would help us to select and synthesise the most suitable and cost effective additive.In this thesis, two groups of chemicals i.e. salt and hydrophobic particles were added to the hydrate formation reactor and examined. Initially sodium halides were tested for their effect on the kinetics of the formation of CO 2 hydrates in an isochoric system. The effect of different anion types and concentrations was investigated by directly measuring pressure and temperature changes in the reactor and evaluating maximum CO 2 uptake, conversion, storage capacity, induction time, and hydrate growth rate. The results indicated that sodium halides at a concentration of 50 mM (mmol/L) increase CO 2 consumption and conversion to hydrates. In addition, sodium iodide and sodium bromide in a range of concentrations between 50 and 250 mM significantly increased the hydrate formation kinetics. Measurements of the surface potential of CO 2 hydrates formed in the presence of sodium halides showed negative charge on hydrates with the highest zeta potential observed at the concentration of 50 mM. The findings of this part of the research led us to propose a mechanism for the formation of CO 2 hydrates in the presence of sodium halides.The second group of additives extensively investigated in the current research were hydrophobic nano-particles. Two types of hydrophobic fumed silica were studied.iii They produced two types of particle stabilised systems when mixed with water (i.e. silica foam and dry water). The influence of particle hydrophobicity and concentration on hydrate formation kinetics was established by monitoring gas consumption, CO 2 conversion and induction time. The morphology, microstructure, and pore characteristics were elucidated by cryogenic scanning electron microscopy (cryo-SEM), and the elemental distribution and composition were determined by X-ray energy dispersive spectroscopy (EDS). The results indicated that the promoting effect of hydrophobic fumed silica was dependent on the particle hydrophobicity and on the weight ratio of silica to water. The kinetics of CO 2 hydrate formation were ...

show abstract

“…Ding et al (2013) investigated methane storage process in porous media and found that increased operating pressure and smaller particle size enhance storage capacity. Prasad et al (2012) found that induction time of hydrate obviously shortened in porous media.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on the effect of pore size on carbon dioxide hydrate formation and storage in porous media

Zhang

et al. 2015

Journal of Natural Gas Science and Engineering

View full text Add to dashboard Cite

Reversible methane storage in porous hydrogel supported clathrates

Abstract: Porous hydrogel microspheres were synthesised and mixed with dry-water forming a colloidal system-Formation of methane gas hydrates in the colloidal system was fast and high in hydration capacity-The system is reusable for methane storage Highlights.docx

Cited by 56 publications

References 29 publications

Enhanced clathrate hydrate formation kinetics at near ambient temperatures and moderate pressures: Application to natural gas storage

Enhanced clathrate hydrate formation kinetics at near ambient temperatures and moderate pressures: Application to natural gas storage

Kinetics of the formation of CO2 hydrates in the presence of sodium halides and hydrophobic fumed silica nanoparticles

Experimental study on the effect of pore size on carbon dioxide hydrate formation and storage in porous media

Contact Info

Product

Resources

About