Carbon dioxide and formic acid—the couple for environmental-friendly hydrogen storage?

2010 ◽  
Vol 3 (9) ◽  
pp. 1207 ◽  
Author(s):  
Stephan Enthaler ◽  
Jan von Langermann ◽  
Thomas Schmidt
Keyword(s):  
Carbon Dioxide ◽  
Hydrogen Storage ◽  
Formic Acid ◽  
Environmental Friendly

scholarly journals Hydrogen Storage in the Carbon Dioxide – Formic Acid Cycle

2015 ◽  
Vol 69 (12) ◽  
pp. 746-752 ◽  
Author(s):  
Cornel Fink ◽  
Mickael Montandon-Clerc ◽  
Gabor Laurenczy
Keyword(s):  
Carbon Dioxide ◽  
Hydrogen Storage ◽  
Formic Acid ◽  
Acid Cycle

CO2-based hydrogen storage – formic acid dehydrogenation

2018 ◽  
Vol 3 (12) ◽  
Author(s):  
Thomas Zell ◽  
Robert Langer
Keyword(s):  
Carbon Dioxide ◽  
Hydrogen Storage ◽  
Formic Acid ◽  
Renewable Energy Sources ◽  
Energy Landscape ◽  
Electric Energy ◽  
Neutral Hydrogen ◽  
Electrical Energy ◽  
Catalyst Systems ◽  
Formic Acid Dehydrogenation

Abstract Changing demands on the energy landscape are causing the need for sustainable approaches. The shift toward alternative, renewable energy sources is closely associated with new demands for energy storage and transportation. Besides storage of electrical energy, also storage of energy by generating and consuming hydrogen (H2) is possible and highly attractive. Notably, both secondary energy vectors, electric energy and hydrogen, have practical advantages so that one should not ask “which one is better?” but “which one fits better the specific application?” Molecular hydrogen can be stored reversibly in form of formic acid (FA, HCOOH). In the presence of suitable catalysts, FA can be selectively decomposed to hydrogen and carbon dioxide (CO2). A CO2-neutral hydrogen storage cycle can be achieved when carbon dioxide serves as starting material for the production of the FA. Examples of CO2 hydrogenation to FA are known in the literature. Herein, the formal reverse reaction, the decomposition of FA to H2 and CO2 by different catalyst systems is reviewed and selected examples for reversible storage applications based on FA as hydrogen storage compound are discussed.

Photochemical and Electrochemical Reduction of Carbon Dioxide Catalyzed by a Polyoxometalate-Organic Photosensitizer Complex

2018 ◽  
Author(s):  
Chandan Dey ◽  
Ronny Neumann
Keyword(s):  
Carbon Dioxide ◽  
Cyclic Voltammetry ◽  
Formic Acid ◽  
Electrochemical Reduction ◽  
Mass Spectroscopy ◽  
Photochemical Reactions ◽  
Reducing Agent ◽  
Covalent Attachment ◽  
Hybrid Complex ◽  
Open Face

<p>A manganese substituted Anderson type polyoxometalate, [MnMo<sub>6</sub>O<sub>24</sub>]<sup>9-</sup>, tethered with an anthracene photosensitizer was prepared and used as catalyst for CO<sub>2</sub> reduction. The polyoxometalate-photosensitizer hybrid complex, obtained by covalent attachment of the sensitizer to only one face of the planar polyoxometalate, was characterized by NMR, IR and mass spectroscopy. Cyclic voltammetry measurements show a catalytic response for the reduction of carbon dioxide, thereby suggesting catalysis at the manganese site on the open face of the polyoxometalate. Controlled potentiometric electrolysis showed the reduction of CO<sub>2</sub> to CO with a TOF of ~15 sec<sup>-1</sup>. Further photochemical reactions showed that the polyoxometalate-anthracene hybrid complex was active for the reduction of CO<sub>2</sub> to yield formic acid and/or CO in varying amounts dependent on the reducing agent used. Control experiments showed that the attachment of the photosensitizer to [MnMo<sub>6</sub>O<sub>24</sub>]<sup>9-</sup> is necessary for photocatalysis.</p><div><br></div>

scholarly journals Enabling Storage and Utilization of Low-Carbon Electricity: Power to Formic Acid

2021 ◽  
Author(s):  
Kuo-Wei Huang ◽  
Sudipta Chatterjee ◽  
Indranil Dutta ◽  
Yanwei Lum ◽  
Zhiping Lai
Keyword(s):  
Hydrogen Storage ◽  
Formic Acid ◽  
Storage Capacity ◽  
Energy Carrier ◽  
Hydrogen Energy ◽  
Low Carbon ◽  
Hydrogen Storage Capacity ◽  
Electricity Power ◽  
Low Toxicity

Formic acid has been proposed as a hydrogen energy carrier because of its many desirable properties, such as low toxicity and flammability, and a high volumetric hydrogen storage capacity of...

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