Sivanesan Dharmalingam, Choi Youngju, Lee Jiyeon, Youn Min Hye, Park Ki Tae, Grace Andrew Nirmala, Kim Hak-Joo, Jeong Soon Kwan
Green Energy Process Laboratory, Korea Institute of Energy Research, 102 Gajeong-ro, Yuseong-gu, Daejeon, 305-343, Republic of Korea), Fax: (+82) 42-860-3134.
Centre for Nanotechnology Research, VIT University, Vellore 632014, Tamil Nadu, India.
ChemSusChem. 2015 Dec 7;8(23):3977-82. doi: 10.1002/cssc.201501139. Epub 2015 Nov 13.
Globally, the elevation of carbon dioxide (CO2 ) levels due to the anthropogenic effect poses a serious threat to the ecosystem. Hence, it is important to control and/or mitigate the level of CO2 in the atmosphere, which necessitates novel tools. Herein, it is proposed to improve CO2 sequestration by using model complexes based on the enzyme carbonic anhydrase (CA) in aqueous tertiary amine medium. The effect of substituents on the model CA model complexes on CO2 absorption and desorption was determined by using a stopped-flow spectrophotometer to follow pH changes through coupling to pH indicator and a continuous stirred-tank reactor (CSTR). The CO2 hydration rate constants were determined under basic conditions and compound 6, which contained a hydrophilic group, showed the highest absorption or hydration levels of CO2 (2.860×10(3) L mol(-1) s(-1) ). In addition, CSTR results for the absorption and desorption of CO2 suggest that simple model CA complexes could be used in post-combustion processing.
在全球范围内，人为因素导致的二氧化碳（CO₂）水平升高对生态系统构成了严重威胁。因此，控制和/或降低大气中的CO₂水平至关重要，这就需要新的工具。在此，有人提出在叔胺水溶液介质中使用基于碳酸酐酶（CA）的模型配合物来提高CO₂的封存效果。通过使用停流分光光度计，通过与pH指示剂耦合跟踪pH变化，并使用连续搅拌釜式反应器（CSTR），确定了取代基对模型CA模型配合物对CO₂吸收和解吸的影响。在碱性条件下测定了CO₂水合速率常数，含有亲水基团的化合物6表现出最高的CO₂吸收或水合水平（2.860×10³ L mol⁻¹ s⁻¹）。此外，CO₂吸收和解吸的CSTR结果表明，简单的模型CA配合物可用于燃烧后处理。
