کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7053016 | 1457463 | 2018 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Investigation of carbon formation on Ni/YSZ anode of solid oxide fuel cell from CO disproportionation reaction
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
A challenge in the operation of solid oxide fuel cells (SOFCs) with hydrocarbon fuels is carbon deposition on the nickel/yttria-stabilized zirconia (Ni/YSZ) anode. This paper investigated the carbon formation on Ni/YSZ anode of solid oxide fuel cell (SOFC) due to CO disproportionation reaction. The steady-state rates of carbon formation under different CO/CO2 gas compositions were measured at temperature range from 600°C to 800°C. Experimental results showed that the steady-state rate of carbon formation caused by CO disproportionation reaction cannot solely be expressed with temperature or CO/CO2 gas ratios. A kinetic model divides the CO disproportionation reaction into several stepwise reactions, among which one of the stepwise reactions, namely, the CâO bond cleavage reaction, is considered as the rate-limiting step of the overall reaction. This kinetic model fits very well with the experimental results. Based on the kinetic model and experimental data, a steady-state rate equation of carbon formation in the process of CO disproportionation reaction was derived at the temperature from 600°C to 800°C on Ni/YSZ anode of SOFCs.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Communications in Heat and Mass Transfer - Volume 91, February 2018, Pages 23-29
Journal: International Communications in Heat and Mass Transfer - Volume 91, February 2018, Pages 23-29
نویسندگان
Dong Hua, Guojun Li, Haibin Lu, Xiongwen Zhang, Pengfei Fan,