کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6601300 459324 2015 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A membrane electrode assembly for the electrochemical synthesis of hydrocarbons from CO2(g) and H2O(g)
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
A membrane electrode assembly for the electrochemical synthesis of hydrocarbons from CO2(g) and H2O(g)
چکیده انگلیسی
We report the electrochemical reduction of CO2 into hydrocarbons using a new electrochemical membrane reactor holding a yet unreported membrane electrode assembly comprising a copper mesh cathode and a Ti felt coated with mixed metal oxide (MMO) catalyst anode separated by a proton conductive membrane. CO2(g) was supplied to the cathodic reduction compartment, whilst humidified N2 was supplied to the anodic oxidation compartment. The MMO anode produces protons transported across the proton exchange membrane and electrons transported via the external circuit to the copper cathode to reduce CO2(g). Production rates of methane, propane, propene, iso-butane and n-butane were determined as a function of cell potential at temperatures between 30 and 70 °C and relative humidity between ca. 25% and 75%. Maximum methane concentration and the current efficiency for production of hydrocarbons were 3.29 ppm and 0.12%, respectively. Whilst the observed product spectrum is desirable, such low current efficiencies require systematic optimization of the catalytic membrane system, in particular an improved cathode with an optimum contact between proton conducting membrane, electrode and catalyst is desired.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Electrochemistry Communications - Volume 50, January 2015, Pages 64-68
نویسندگان
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