The enhanced enzymatic performance of carbonic anhydrase on the reaction rate between CO 2 and aqueous solutions of sterically hindered amines
| Autor: | Ozge Yuksel Orhan, Neslisah Cihan |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Steric effects
Reaction mechanism Environmental Engineering Aqueous solution biology Chemistry Kinetics Inorganic chemistry 02 engineering and technology 010501 environmental sciences 01 natural sciences Reaction rate chemistry.chemical_compound 020401 chemical engineering Carbonic anhydrase Carbon dioxide biology.protein Environmental Chemistry Amine gas treating 0204 chemical engineering 0105 earth and related environmental sciences |
| Zdroj: | Greenhouse Gases: Science and Technology. 10:925-937 |
| ISSN: | 2152-3878 |
| DOI: | 10.1002/ghg.2012 |
| Popis: | The kinetics of the reactions of carbon dioxide (CO2) with aqueous solutions of two different sterically hindered amines (SHAs), 2‐amino‐2‐ethyl‐1,3‐propanediol (AEPD) and 2‐amino‐2‐methyl‐1,3‐propanediol (AMPD), in the presence and absence of carbonic anhydrase (CA) was investigated experimentally using stopped‐flow conductimetry. The amine concentration, CA concentration, and temperature were varied within the ranges of 0.1–0.5 kmol·m–3, 0–125 g·m–3, and 298–353 K, respectively. Based on pseudo first‐order reaction conditions, the intrinsic reaction rate (ko) was obtained according to a modified termolecular reaction mechanism. The obtained results showed that the reaction rate between the SHA solutions (either aqueous AEPD or aqueous AMPD) and CO2 was enhanced significantly upon adding small amounts of CA as a promoter. Such a result supports the use of the aforementioned solvent system as a candidate for CO2 capture. © 2020 Society of Chemical Industry and John Wiley & Sons, Ltd. |
| Databáze: | OpenAIRE |
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