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Facile Carbon Fixation to Performic Acids by Water-Sealed Dielectric Barrier Discharge.

Kawasaki M, Morita T, Tachibana K - Sci Rep (2015)

Bottom Line: The creation of artificial carbon fixation processes is one of the greatest challenges for chemistry to solve the critical environmental issue concerning the reduction of CO2 emissions.We have developed an electricity-driven facile CO2 fixation process that yields performic acid, HCO2OH, from CO2 and water at neutral pH by dielectric barrier discharge with an input electric power conversion efficiency of currently 0.2-0.4%.This method offers a promising future technology for artificial carbon fixation on its own, and may also be scaled up in combination with e.g., the post-combustion CO2 capture and storage technology.

View Article: PubMed Central - PubMed

Affiliation: Department of Molecular Engineering, Kyoto University, Katsura, Kyoto 615-8510, Japan.

ABSTRACT
Carbon fixation refers to the conversion of carbon dioxide (CO2) to organic materials, as commonly performed in nature through photosynthesis by plants and other autotrophic organisms. The creation of artificial carbon fixation processes is one of the greatest challenges for chemistry to solve the critical environmental issue concerning the reduction of CO2 emissions. We have developed an electricity-driven facile CO2 fixation process that yields performic acid, HCO2OH, from CO2 and water at neutral pH by dielectric barrier discharge with an input electric power conversion efficiency of currently 0.2-0.4%. This method offers a promising future technology for artificial carbon fixation on its own, and may also be scaled up in combination with e.g., the post-combustion CO2 capture and storage technology.

No MeSH data available.


Kinetics of oxidative discoloration of methylene blue by HP and WS-DBD product.Normalized peak absorbance of initially 20 μM methylene blue aqueous solution is plotted as a function of time of oxidative discoloration at 70 °C for solutions containing (a) HP and (b) WS-DBD product at various concentrations. The WS-DBD product caused at least an order of magnitude faster oxidative discoloration of methylene blue.
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f4: Kinetics of oxidative discoloration of methylene blue by HP and WS-DBD product.Normalized peak absorbance of initially 20 μM methylene blue aqueous solution is plotted as a function of time of oxidative discoloration at 70 °C for solutions containing (a) HP and (b) WS-DBD product at various concentrations. The WS-DBD product caused at least an order of magnitude faster oxidative discoloration of methylene blue.

Mentions: Figure 4 further endorses the much stronger oxidizing capability of the WS-DBD product solution than that of HP, in terms of oxidative discoloration of a dilute (20 μM) methylene blue solution at ~70 °C. In the case of HP as the oxidant in Fig. 4a, there seemed to be some long induction period even at the highest HP concentration of 1000 mM. The discoloration reaction proceeded much more smoothly in the case of WS-DBD product as the alternative oxidant as shown in Fig. 4b, and overall we confirm at least an order of magnitude difference in the oxidizing capability between HP and WS-DBD product for this particular oxidation reaction under the given condition.


Facile Carbon Fixation to Performic Acids by Water-Sealed Dielectric Barrier Discharge.

Kawasaki M, Morita T, Tachibana K - Sci Rep (2015)

Kinetics of oxidative discoloration of methylene blue by HP and WS-DBD product.Normalized peak absorbance of initially 20 μM methylene blue aqueous solution is plotted as a function of time of oxidative discoloration at 70 °C for solutions containing (a) HP and (b) WS-DBD product at various concentrations. The WS-DBD product caused at least an order of magnitude faster oxidative discoloration of methylene blue.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4593949&req=5

f4: Kinetics of oxidative discoloration of methylene blue by HP and WS-DBD product.Normalized peak absorbance of initially 20 μM methylene blue aqueous solution is plotted as a function of time of oxidative discoloration at 70 °C for solutions containing (a) HP and (b) WS-DBD product at various concentrations. The WS-DBD product caused at least an order of magnitude faster oxidative discoloration of methylene blue.
Mentions: Figure 4 further endorses the much stronger oxidizing capability of the WS-DBD product solution than that of HP, in terms of oxidative discoloration of a dilute (20 μM) methylene blue solution at ~70 °C. In the case of HP as the oxidant in Fig. 4a, there seemed to be some long induction period even at the highest HP concentration of 1000 mM. The discoloration reaction proceeded much more smoothly in the case of WS-DBD product as the alternative oxidant as shown in Fig. 4b, and overall we confirm at least an order of magnitude difference in the oxidizing capability between HP and WS-DBD product for this particular oxidation reaction under the given condition.

Bottom Line: The creation of artificial carbon fixation processes is one of the greatest challenges for chemistry to solve the critical environmental issue concerning the reduction of CO2 emissions.We have developed an electricity-driven facile CO2 fixation process that yields performic acid, HCO2OH, from CO2 and water at neutral pH by dielectric barrier discharge with an input electric power conversion efficiency of currently 0.2-0.4%.This method offers a promising future technology for artificial carbon fixation on its own, and may also be scaled up in combination with e.g., the post-combustion CO2 capture and storage technology.

View Article: PubMed Central - PubMed

Affiliation: Department of Molecular Engineering, Kyoto University, Katsura, Kyoto 615-8510, Japan.

ABSTRACT
Carbon fixation refers to the conversion of carbon dioxide (CO2) to organic materials, as commonly performed in nature through photosynthesis by plants and other autotrophic organisms. The creation of artificial carbon fixation processes is one of the greatest challenges for chemistry to solve the critical environmental issue concerning the reduction of CO2 emissions. We have developed an electricity-driven facile CO2 fixation process that yields performic acid, HCO2OH, from CO2 and water at neutral pH by dielectric barrier discharge with an input electric power conversion efficiency of currently 0.2-0.4%. This method offers a promising future technology for artificial carbon fixation on its own, and may also be scaled up in combination with e.g., the post-combustion CO2 capture and storage technology.

No MeSH data available.