二氧化碳电化学还原反应
二氧化碳电化学还原反应是使用电化学手段将二氧化碳（CO2）还原的反应，它是碳捕获与利用的最有前途手段之一。[1]
二氧化碳电化学还原可以得到特定的有机物或燃料，如甲酸[2]、一氧化碳、甲烷、乙烯和乙醇等。[3][4][5]金属催化剂中，锡可以选择性催化生成甲酸，银可以产生一氧化碳，铜产生甲烷、乙烯或乙醇。尽管甲醇、丙醇或丁醇也可能在二氧化碳电化学还原中产生，但产量较少。[6]
电催化
一些产物的还原电位见下表：
| 反应 | 还原电位[7]
Eo (V) |
|---|---|
| CO2 + 2 H+ + 2 e− → HCOOH | −0.61 |
| CO2 + 2 H+ + 2 e− → CO + H2O | −0.53 |
| CO2 + 8 H+ + 8 e− → CH4 + 2 H2O | −0.24 |
| 2 CO2 + 12 H+ + 12 e− → C2H4 + 4 H2O | −0.349 |
| 2 CO2 + 12 H+ + 12 e− → C2H5OH + 3 H2O | −0.329 |
参考文献
- ^ Dream or Reality? Electrification of the Chemical Process Industries. www.aiche-cep.com. [2021-08-22]. （原始内容存档于2021-07-17） （英语）.
- ^ Valenti G, Melchionna M, Montini T, Boni A, Nasi L, Fonda E, et al. Water-Mediated ElectroHydrogenation of CO2 at Near-Equilibrium Potential by Carbon Nanotubes/Cerium Dioxide Nanohybrids. ACS Appl. Energy Mater. 2020, 3 (9): 8509–8518. doi:10.1021/acsaem.0c01145
.
- ^ Centi G, Perathoner S. Opportunities and prospects in the chemical recycling of carbon dioxide to fuels. Catalysis Today. 2009, 148 (3–4): 191–205. doi:10.1016/j.cattod.2009.07.075.
- ^ Qiao J, Liu Y, Hong F, Zhang J. A review of catalysts for the electroreduction of carbon dioxide to produce low-carbon fuels. Chemical Society Reviews. January 2014, 43 (2): 631–75. PMID 24186433. doi:10.1039/c3cs60323g.
- ^ Appel AM, Bercaw JE, Bocarsly AB, Dobbek H, DuBois DL, Dupuis M, et al. Frontiers, opportunities, and challenges in biochemical and chemical catalysis of CO2 fixation. Chemical Reviews. August 2013, 113 (8): 6621–58. PMC 3895110 . PMID 23767781. doi:10.1021/cr300463y.
- ^ Ting LR, García-Muelas R, Martín AJ, Veenstra FL, Chen ST, Peng Y, et al. Electrochemical Reduction of Carbon Dioxide to 1-Butanol on Oxide-Derived Copper. Angewandte Chemie. November 2020, 59 (47): 21072–21079. PMC 7693243 . PMID 32706141. doi:10.1002/anie.202008289.
- ^ Sun Z, Ma T, Tao H, Fan Q, Han B. Fundamentals and Challenges of Electrochemical CO2 Reduction Using Two-Dimensional Materials. Chem. 2017, 3 (4): 560–587. doi:10.1016/j.chempr.2017.09.009 .
延伸阅读
- LaConti AB, Molter TM, Zagaja JA. Electrochemical Reduction of Carbon Dioxide.. Online: Information for the Defense Industry. May 1986. （原始内容存档于27 March 2012）.
- Fujita E. Carbon Dioxide (Reduction). Upton, NY (United States): Brookhaven National Lab. (BNL). January 2000 [2022-09-15]. （原始内容存档于2012-10-04）.
- Neelameggham NR. Carbon Dioxide Reduction Technologies: A Synopsis of the Symposium at TMS 2008. The Minerals, Metals & Materials Society (TMS). [2022-09-15]. （原始内容存档于2022-05-24）.