کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7718282 | 1497483 | 2014 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Pt-based bimetallic catalysts for SO2-depolarized electrolysis reaction in the hybrid sulfur process
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Pt-based bimetallic catalysts for SO2-depolarized electrolysis reaction in the hybrid sulfur process Pt-based bimetallic catalysts for SO2-depolarized electrolysis reaction in the hybrid sulfur process](/preview/png/7718282.png)
چکیده انگلیسی
SO2-depolarized electrolysis (SDE) is pivotal in the hybrid sulfur process, which is a promising approach for mass hydrogen production without CO2 emission. The anode overpotential of SDE is the key component of electrolysis potential. This factor can be reduced by improving anode reaction kinetics. Such improvement is commonly achieved by employing Pt/AC as anode electrode and catalyst, thus also improving economic and electrocatalytic performances. In this work, anode catalysts for SO2 oxidation reaction are experimentally studied. Platinum-based bimetallic catalysts, including Pt-Pd/C, Pt-Rh/C, Pt-Ru/C, Pt-Ir/C, and Pt-Cr/C, are prepared and characterized. Their electrochemical characteristics for SDE in a once-through mode are investigated in SO2-saturated 30Â wt% sulfuric acid at room temperature by various approaches such as cyclic voltammetry, linear sweep voltammetry, and polarization curves. Results show that 60Â wt% Pt-Cr/C exhibits the highest electrocatalytic activity for SDE. Further studies on the metal proportion in Pt-Cr/C show that at a Pt:Cr atomic ratio of 1:2, this bimetallic catalyst demonstrates equal or even better electrolysis performance than 60Â wt% Pt/C at a significantly lower economic cost.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 26, 3 September 2014, Pages 14196-14203
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 26, 3 September 2014, Pages 14196-14203
نویسندگان
Lulu Xue, Ping Zhang, Songzhe Chen, Laijun Wang,