دورية
Absorption of CO2by Tetra-n-Butylammonium Bromide Semiclathrate Hydrate Slurries in a Bubble Column with Temperature Swing
| العنوان: | Absorption of CO2by Tetra-n-Butylammonium Bromide Semiclathrate Hydrate Slurries in a Bubble Column with Temperature Swing |
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| المؤلفون: | Komatsu, Hiroyuki, Okoshi, Hideki, Ezure, Ryosuke, Tajima, Hideo |
| المصدر: | Industrial & Engineering Chemistry Research; 20240101, Issue: Preprints |
| مستخلص: | Hydrate-based carbon capture technology offers simple operation and adaptation to small-scale regional biomass systems. Absorption of CO2by tetra-n-butylammonium bromide semiclathrate hydrate (SCH) slurries was investigated with a temperature-swing bubble column to elucidate clathrate formation mechanisms. At a constant temperature (278 K), the amount of CO2absorbed into the hydrate phase was 0.43 mmol-CO2/mol-H2O at 0.15 MPa CO2partial pressure. When the temperature was lowered to 276 K and held constant for 30 min, the amount of CO2absorbed increased (1.25 mmol-CO2/mol-H2O). When the temperature was raised to 278 K and held constant for 30 min, the amount of CO2absorbed decreased (1.08 mmol-CO2/mol-H2O), which was attributed to preferential decomposition of SCH with low CO2occupancy, because these particles have low thermodynamic stability. CO2absorption capacity in SCH slurries in bubble columns can be doubled by temperature swing since SCH dynamic formation with CO2absorption is faster than CO2absorption in existing SCH. |
| قاعدة البيانات: | Supplemental Index |
Find this issue from the American Chemical Society | تدمد: | 08885885 15205045 |
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| DOI: | 10.1021/acs.iecr.4c00237 |