{"title":"Electrochemical Reduction of Formic Acid on a Copper-Tin-Lead Cathode","authors":"I. Kotoulas, A. Schizodimou, G. Kyriacou","doi":"10.2174/1876505X01305010008","DOIUrl":null,"url":null,"abstract":"The electrochemical reduction of formic acid in acidic solution (2 mol L -1 HCl) on a Cu(88)Sn(6)Pb(6) cathode was studied. The main products of the reduction were methanol and ethanol having %Current Efficiencies (CEs) of 30.3 and 37.6% respectively at -0.8 V vs Ag/AgCl. Small amounts of methane and ethane were also detected. The rate of the reduction increased exponentially with the negative potential in the range -0.65 to -1.00 V and the maximum of the %CE was observed at -0.8 V. The rate of the reduction of HCOOH increased slightly with the concentration of HCOOH. In pure HCOOH as electrolyte a noticeable amount of CH3CHO (17.1%) was detected. A possible reduction mechanism was proposed in which the adsorbed CO is the key intermediate for the formation of all the products.","PeriodicalId":23074,"journal":{"name":"The Open Electrochemistry Journal","volume":"1 1","pages":"8-12"},"PeriodicalIF":0.0000,"publicationDate":"2014-05-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"9","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"The Open Electrochemistry Journal","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.2174/1876505X01305010008","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 9
Abstract
The electrochemical reduction of formic acid in acidic solution (2 mol L -1 HCl) on a Cu(88)Sn(6)Pb(6) cathode was studied. The main products of the reduction were methanol and ethanol having %Current Efficiencies (CEs) of 30.3 and 37.6% respectively at -0.8 V vs Ag/AgCl. Small amounts of methane and ethane were also detected. The rate of the reduction increased exponentially with the negative potential in the range -0.65 to -1.00 V and the maximum of the %CE was observed at -0.8 V. The rate of the reduction of HCOOH increased slightly with the concentration of HCOOH. In pure HCOOH as electrolyte a noticeable amount of CH3CHO (17.1%) was detected. A possible reduction mechanism was proposed in which the adsorbed CO is the key intermediate for the formation of all the products.
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