二氧化碳電化學還原反應
二氧化碳電化學還原反應是使用電化學手段將二氧化碳（CO2）還原的反應，它是碳捕獲與利用的最有前途手段之一。[1]
二氧化碳電化學還原可以得到特定的有機物或燃料，如甲酸[2]、一氧化碳、甲烷、乙烯和乙醇等。[3][4][5]金屬催化劑中，錫可以選擇性催化生成甲酸，銀可以產生一氧化碳，銅產生甲烷、乙烯或乙醇。儘管甲醇、丙醇或丁醇也可能在二氧化碳電化學還原中產生，但產量較少。[6]
電催化
一些產物的還原電位見下表：
| 反應 | 還原電位[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 |
參考文獻
- ^ Dream or Reality? Electrification of the Chemical Process Industries. www.aiche-cep.com. [2021-08-22]. （原始內容存檔於2021-07-17） （英語）.
- ^ 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 .
延伸閱讀
- LaConti AB, Molter TM, Zagaja JA. Electrochemical Reduction of Carbon Dioxide.. Online: Information for the Defense Industry. May 1986. （原始內容存檔於27 March 2012）.
- Fujita E. Carbon Dioxide (Reduction). Upton, NY (United States): Brookhaven National Lab. (BNL). January 2000 [2022-09-15]. （原始內容存檔於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]. （原始內容存檔於2022-05-24）.