A study of structure-activity relationships of aqueous diamine solutions with low heat of regeneration for post-combustion CO2 capture

Wu, Zhaoyang; Liu, Sen; Gao, Hongxia; Yin, Qi-Qi; Liang, Zhiwu

doi:10.1016/j.energy.2018.10.194

Cited by 22 publications

(11 citation statements)

References 39 publications

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“…The baseline uncatalyzed rate was found by rapidly mixing the dissolved CO 2 solution and the buffer solution (1:1) in the stopped-flow spectrophotometer, while recording the time-dependent absorbance at λ = 596 nm. Twenty milliliters of 1 mM solutions of (1) and (2) in the AMPSO buffer solution were prepared by stirring under nitrogen. The catalyst concentration-dependent initial rates were found by diluting the 1.0 mM solutions with the AMPSO buffer solution.…”

Section: Kinetic Measurements (Stopped-flow Spectrophotometer)mentioning

confidence: 99%

“…Therefore, a Zn complex was synthesized by substituting the hydroxyl group at position two of the pyridine unit of TPA. The environment surrounding the water molecules bound to (1) and (2) was investigated by studying the O-H vibration using FTIR spectroscopy. (Supplementary Materials 3).…”

Section: Pka Measurementmentioning

confidence: 99%

“…CO 2 , which is the main cause of global warming, is being actively studied so as to find more economical ways to capture and store this gas stably [1][2][3]. For capturing CO 2 , amine-based chemosorbents, which are expected to be the first material to be commercialized, are currently under investigation [3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

“…A Zn catalyst with a structure mimicking CA was synthesized; Zn catalyst (1) had 4-coordinated tris(2-pyridylmethyl)amine (TPA) as the ligand [27][28][29]. In addition, the ligand 6-((bis(pyridin-2-ylmethyl)amino)methyl)pyridin-2-ol (TPA-OH) was used to synthesize Zn catalyst (2), considering the second coordination sphere, including Thr-199 in CA ( Figure 2). In this study, we compared the rates of CO2 hydration obtained using catalysts (1) and (2).…”

Section: Introductionmentioning

confidence: 99%

“…In addition, the ligand 6-((bis(pyridin-2-ylmethyl)amino)methyl)pyridin-2-ol (TPA-OH) was used to synthesize Zn catalyst (2), considering the second coordination sphere, including Thr-199 in CA ( Figure 2). In this study, we compared the rates of CO2 hydration obtained using catalysts (1) and (2). These catalysts mimic the first coordination sphere of CA and the participation of Thr-199 in the second coordination sphere, respectively.…”

Section: Introductionmentioning

confidence: 99%

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Kinetic Study of CO2 Hydration by Small-Molecule Catalysts with A Second Coordination Sphere that Mimic the Effect of the Thr-199 Residue of Carbonic Anhydrase

Park¹,

Lee²

2019

Biomimetics

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Zinc complexes were synthesized as catalysts that mimic the ability of carbonic anhydrase (CA) for the CO2 hydration reaction (H2O + CO2 → H+ + HCO3-). For these complexes, a tris(2-pyridylmethyl)amine (TPA) ligand mimicking only the active site, and a 6-((bis(pyridin-2-ylmethyl)amino)methyl)pyridin-2-ol (TPA-OH) ligand mimicking the hydrogen-bonding network of the secondary coordination sphere of CA were used. Potentiometric pH titration was used to determine the deprotonation ability of the Zn complexes, and their pKa values were found to be 8.0 and 6.8, respectively. Stopped-flow spectrophotometry was used to confirm the CO2 hydration rate. The rate constants were measured to be 648.4 and 730.6 M-1s-1, respectively. The low pKa value was attributed to the hydrogen-bonding network of the secondary coordination sphere of the catalyst that mimics the behavior of CA, and this was found to increase the CO2 hydration rate of the catalyst.

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Section: Kinetic Measurements (Stopped-flow Spectrophotometer)mentioning

confidence: 99%

Section: Pka Measurementmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Kinetic Study of CO2 Hydration by Small-Molecule Catalysts with A Second Coordination Sphere that Mimic the Effect of the Thr-199 Residue of Carbonic Anhydrase

Park¹,

Lee²

2019

Biomimetics

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Carbon Dioxide Captured on a Wet Si−C Composite Material with a Surfactant‐derived Carbon Film

et al. 2022

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The storage capacity of carbon dioxide (CO2) on the wet SBA‐15 material can be greatly improved by forming gas hydrates. The presence of generous polar groups (hydroxyl groups) on the surface of SBA‐15 hinders the formation of CO2 hydrates. In order to further improve its CO2 adsorption capacity, the polar surfaces of SBA‐15 material are changed into non‐polar carbon surfaces by covering with carbon film, and Si−C composite is obtained. Compared with the SBA‐15 material, the pore size and pore volume of the Si−C composite material reduces but its morphology and structure are unchanged. Whether pre‐adsorbed water or not, the experiment results showed that the Si−C composite material is more conducive to the adsorption of CO2 than the SBA‐15 material. In a comparison of the Si−C composite material and the SBA‐15 material at 2.5 MPa, the CO2 adsorption capacity increased from 3.8 mmol/g to 8.5 mmol/g with dry samples, and the CO2 adsorption capacity increased from 20.1 mmol/g to 26.9 mmol/g with wet samples at Rw=2.0.

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Intensification of CO2 absorption and desorption by metal/non-metal oxide nanoparticles in bubble columns

Zarei

Keshavarz

2022

Environ Sci Pollut Res

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A study of structure-activity relationships of aqueous diamine solutions with low heat of regeneration for post-combustion CO2 capture

Cited by 22 publications

References 39 publications

Kinetic Study of CO2 Hydration by Small-Molecule Catalysts with A Second Coordination Sphere that Mimic the Effect of the Thr-199 Residue of Carbonic Anhydrase

Kinetic Study of CO2 Hydration by Small-Molecule Catalysts with A Second Coordination Sphere that Mimic the Effect of the Thr-199 Residue of Carbonic Anhydrase

Carbon Dioxide Captured on a Wet Si−C Composite Material with a Surfactant‐derived Carbon Film

Intensification of CO2 absorption and desorption by metal/non-metal oxide nanoparticles in bubble columns

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