Formic acid formation via direct hydration reaction (CO + H2O → HCOOH) on magnesia-silver composite

Song, Zhenjun; Han, Deman; Yang, Meiding; Huang, Jian; Shao, Xi; Li, Hongdao

doi:10.1016/j.apsusc.2022.155067

Cited by 116 publications

(23 citation statements)

References 71 publications

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“…No obvious carbonate signals could be detected on Ag during eCO 2 RR (Figure c), although a very small quantity of formate (<3% FE ) was observed (Figure d). This formate is likely to originate from the hydration of CO formed during eCO 2 RR. , Similar results were also observed for Au (Figure S6). No Ag–CO and Au–CO Raman signals could be recorded, as CO is known to adsorb weakly on Ag and Au surfaces. , All in all, the results in this section on Cu, Pb, Ag, and Au suggest that carbonate species could be a precursor to formate.…”

Section: Results and Discussionsupporting

confidence: 83%

Direct Electroreduction of Carbonate to Formate

Ma,

Ibáñez-Alé,

Ganganahalli

et al. 2023

J. Am. Chem. Soc.

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A cause of losses in energy and carbon conversion efficiencies during the electrochemical CO 2 reduction reaction (eCO 2 RR) can be attributed to the formation of carbonates (CO 3 2− ), which is generally considered to be an electrochemically inert species. Herein, using in situ Raman spectroscopy, liquid chromatography, 1 H nuclear magnetic resonance spectroscopy, 13 C and deuterium isotope labeling, and density functional theory simulations, we show that carbonate intermediates are adsorbed on a copper electrode during eCO 2 RR in KHCO 3 electrolyte from 0.2 to −1.0 V RHE . These intermediates can be reduced to formate at −0.4 V RHE and more negative potentials. This finding is supported by our observation of formate from the reduction of Cu 2 (CO 3 )(OH) 2 . Pulse electrolysis on a copper electrode immersed in a N 2 -purged K 2 CO 3 electrolyte was also performed. We found that the carbonate anions therein could be first adsorbed at −0.05 V RHE and then directly reduced to formate at −0.5 V RHE (overpotential of 0.28 V) with a Faradaic efficiency of 0.61%. The nature of the active sites generating the adsorbed carbonate species and the mechanism for the pulse-enabled reduction of carbonate to formate were elucidated. Our findings reveal how carbonates are directly reduced to a high-value product such as formate and open a potential pathway to mitigate carbonate formation during eCO 2 RR.

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Section: Results and Discussionsupporting

confidence: 83%

Direct Electroreduction of Carbonate to Formate

Ma,

Ibáñez-Alé,

Ganganahalli

et al. 2023

J. Am. Chem. Soc.

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“…In addition, the versatility of well-established amine conjugation chemistry also offers an unprecedented thermogel material design space, potentially offering unique opportunities in high-throughput screening for the rapid discovery of new materials with specific properties for targeted applications. Applications beyond the biomaterial field could also focus on harnessing the coating capabilities of these charged N-containing polymers in areas of energy such as fuel cells, battery cells, , electrocatalytic reactions, , and much more.…”

Section: Discussionmentioning

confidence: 99%

PEG-free pH-Responsive Thermogels Containing Amphiphilic Polycationic Polyethylenimine Copolymers

Lin,

Lim,

Owh

et al. 2023

Macromolecules

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“…[2][3][4] Generally, catalysts are divided into two large categories, homogeneous and heterogeneous catalysts. 5,6 Homogeneous catalysts show more activity than heterogeneous catalysts due to their high dispersion. [7][8][9][10] But the main problem in homogeneous catalysts is their difficult separation from the reaction mixture, oen associated with the production of large amounts of waste and high energy consumption.…”

Section: Introductionmentioning

confidence: 99%