کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4767588 | 1424133 | 2017 | 24 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Improvement of the selectivity of the electrochemical conversion of CO2 to hydrocarbons using cupreous electrodes with in-situ oxidation by oxygen
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Improvement of the selectivity of the electrochemical conversion of CO2 to hydrocarbons using cupreous electrodes with in-situ oxidation by oxygen Improvement of the selectivity of the electrochemical conversion of CO2 to hydrocarbons using cupreous electrodes with in-situ oxidation by oxygen](/preview/png/4767588.png)
چکیده انگلیسی
It is still a challenge to find catalysts for the selective electrochemical reduction of CO2 to value added products. We present a new method for the in-situ modification of a copper catalyst by adding oxygen to the reactant gas. With an appropriate process procedure consisting of a sequence of electrolysis and purge steps, a Cu2O layer was formed during the purge steps. When it was reduced again during the next electrolysis step, Cu+ species remained stable on the surface and let to a higher faradaic efficiency for C2H4 formation and even a lower onset potential for CO2 reduction in general. This effect was observed for a wide range of O2 content from 10 % to 60 % in the reactant gas. In comparison to electrolysis with pure CO2, formation of methane was largely suppressed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochimica Acta - Volume 224, 10 January 2017, Pages 642-648
Journal: Electrochimica Acta - Volume 224, 10 January 2017, Pages 642-648
نویسندگان
Andreas Engelbrecht, Martin Hämmerle, Ralf Moos, Maximilian Fleischer, Günter Schmid,