کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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63938 | 48261 | 2014 | 7 صفحه PDF | دانلود رایگان |
Carbon dioxide transformation to fuels or chemicals provides an attractive approach for its utilization as feedstock and its emission reduction. Herein, we report a gas-phase electrocatalytic reduction of CO2 in an electrolytic cell, constructed using phosphoric acid-doped polybenzimidazole (PBI) membrane, which allowed operation at 170 °C. Pt/C and PtMo/C with variable ratio of Pt/Mo were studied as the cathode catalysts. The results showed that PtMo/C catalysts significantly enhanced CO formation and inhibited CH4 formation compared with Pt/C catalyst. Characterization by X-ray diffraction, X-ray photoelectron spectroscopy and transmission electron microscopy revealed that most Mo species existed as MoO3 in PtMo/C catalysts and the interaction between Pt and MoOx was likely responsible for the enhanced CO formation rate although these bicomponent catalysts in general had a larger particle size than Pt/C catalyst.
Electrolytic cell based on phosphoric acid-doped PBI (PA-PBI) membrane is developed to explore the gas-phase reduction of CO2 at 170 °C. Addition of Mo species to Pt in PtMo/C catalyst significantly promotes the formation of CO and inhibits the formation of CH4 compared with Pt/C catalyst.Figure optionsDownload as PowerPoint slide
Journal: Journal of Energy Chemistry - Volume 23, Issue 6, November 2014, Pages 694–700