Separation and capture of carbon dioxide from CO2/H2 syngas mixture using semi-clathrate hydrates

Semiclathrate-based CO2 capture from flue gas mixtures: An experimental approach with thermodynamic and Raman spectroscopic analyses

“…Most studies on QAS semiclathrates have covered semiclathrate phase equilibria for a single guest gas primarily focusing on TBAB semiclathrates and semiclathrate formation kinetics for pre-combustion CO 2 capture [36,42,[44][45][46][47][48]. However, preferential partitioning of guest gases, gas storage capacity, and guest gas enclathration behavior in QAS semiclathrates for post-combustion CO 2 capture have not been examined thoroughly.…”

“…In addition, the QAS semiclathrates have small 5 12 cages which are left vacant and thus, can be used for capturing small-sized gas molecules [19,22,23,[25][26][27][28][31][32][33][34][35][36][37][38][39][40][41]. Due to their significant thermodynamic stability and guest gas enclathrating ability, QAS semiclathrates have been investigated as an alternative to gas hydrates for gas storage and separation [23,27,31,[42][43][44][45][46][47][48].…”

Experiments and thermodynamic simulations for continuous separation of CO 2 from CH 4 + CO 2 gas mixture utilizing hydrate formation

“…Several studies of hydrate-based gas separation have already been reported, focusing on the separation of CO 2 , H 2 S, H 2 and N 2 from various gas mixtures (e.g. flue and fuel gas) [18][19][20][21][22][23]. It is controversial whether applying hydrate-based gas separation to remove CO 2 from well gas streams is beneficial or not because well gas streams are made up from CH 4 which make CO 2 separation difficult as guest gas selectivity for CH 4 and CO 2 is almost the same [24][25][26][27].…”

An experimental study on the formation behavior of single and binary hydrates of TBAB, TBAF and TBPB for cold storage air conditioning applications

“…There are still small dodecahedral empty water cages left to uptake, store and separate small gas molecules more easily under certain conditions [2][3][4]. Nguyen et al [5] conducted experiments on CO 2 -TBAB hydrate formation.…”

“…Effects of TDDF on the formation of semi-clathrate hydrates3 5. The memory effect of semi-clathrate hydrate formation To study the memory effect, 25 wt% solution of TBAB, TBAF and TBPB solutions with or without SDS (0.5 wt%) and TiO 2 nanoparticle (20 nm) were prepared.…”