CO2 absorption by borate-promoted carbonate solution: Promotion mechanism and vapor liquid equilibrium
| Autor: | Shufeng Shen, Ya-nan Yang, Shaofeng Ren |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
General Chemical Engineering
Inorganic chemistry General Physics and Astronomy chemistry.chemical_element Partial pressure Boric acid Chemical kinetics chemistry.chemical_compound chemistry Carbon dioxide Vapor–liquid equilibrium Carbonate Physical and Theoretical Chemistry Absorption (chemistry) Boron |
| Zdroj: | Fluid Phase Equilibria. 367:38-44 |
| ISSN: | 0378-3812 |
| DOI: | 10.1016/j.fluid.2014.01.027 |
| Popis: | Carbonate-based solvents have advantages over amines for capturing CO 2 from fossil fuel-fired power stations. However, due to slow reaction kinetics, boric acid has been proposed as rate promoter in carbonate-based solvents for reducing CO 2 emission. In this work, borate promotion mechanism has been validated and vapor liquid equilibrium for 35 wt% carbonate solutions with 1 wt%, 3 wt% boric acid was investigated at 323 K, 333 K and 343 K. Based on complexation reaction with mannitol, results show that the tetrahydroxy borate ion, B(OH) 4 − , is considered as a reactive specie toward carbon dioxide absorption. Effect of boric acid and temperature on equilibrium CO 2 partial pressures was discussed in the investigated CO 2 loading range. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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