Electrochemical hydrogenation of thiophene on SPE electrodes

1st International Conference on New Material and Chemical Industry

材料科学;化学工业

Huang, Haiyan^1 ; Yuan, Penghui^1 ; Yu, Ying^1 ; Chung, Keng H.^2

State Key Laboratory of Heavy Oil Processing, College of Science, China University of Petroleum, Beijing

102249, China^1

Well Resources Inc., Edmonton

AB

T6R 1J8, Canada^2

关键词: Degree of automation;    Diffusion controlled reactions;    Electrochemical desulfurizations;    Electrochemical hydrogenation;    Electrochemical reductions;    Environmental-friendly;    Hydrogenation reactions;    Three electrode-system;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/167/1/012070/pdf
DOI  :  10.1088/1757-899X/167/1/012070

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Electrochemical reduction desulfurization is a promising technology for petroleum refining which is environmental friendly, low cost and able to achieve a high degree of automation. Electrochemical hydrogenation of thiophene was performed in a three-electrode system which SPE electrode was the working electrode. The electrochemical desulfurization was studied by cyclic voltammetry and bulk electrolysis with coulometry (BEC) techniques. The results of cyclic voltammetry showed that the electrochemical hydrogenation reduction reaction occurred at -0.4V. The BEC results showed that the currents generated from thiophene hydrogenation reactions increased with temperature. According to Arrhenius equation, activation energy of thiophene electrolysis was calculated and lower activation energy value indicated it was diffusion controlled reaction. From the products of electrolytic reactions, the mechanisms of electrochemical hydrogenation of thiophene were proposed, consisting of two pathways: openingring followed by hydrogenation, and hydrogenation followed by ring opening.