کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7935426 | 1513054 | 2018 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Photoreduction of CO2 over heterogeneous modified TiO2 nanoparticles under visible light irradiation: Synthesis, process and kinetic study
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی انرژی
انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
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چکیده انگلیسی
The partial pressure of CO2 and H2O was systematically varied and investigated in order to indicate the most suitable conditions for achieving high photoreduction activity. The highest production rate of methane and methanol, 28.15â¯Î¼mol/gcat h and 1.24â¯Î¼mol/gcat h, respectively, was observed over the 0.12%Fe-0.5%N sample with total flow rate 13â¯ml/min under 70 w visible light irradiation at optimum partial pressure of reactants (PCO2 = 75.8â¯kPa, PH2O = 15.5â¯kPa). The methane rate of the best catalyst (0.12%Fe-0.5%N) under optimum condition was 51 times higher than pure TiO2 at fixed PCO2 = 75.8â¯kPa, PH2O = 15.5â¯kPa. A new kinetic model was developed based on Sips isotherm over non-homogenous (heterogeneous) catalyst. The kinetic parameters such as reaction rate constant and affinity coefficients of CO2 and H2O were predicted experimentally. The reaction rate constant as well as CO2 and H2O affinity coefficients were predicted 6.47â¯Î¼mol/gcatâ¯h, 22.74â¯barâ1 and 145.2â¯barâ1, respectively.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solar Energy - Volume 164, April 2018, Pages 251-261
Journal: Solar Energy - Volume 164, April 2018, Pages 251-261
نویسندگان
Alireza Khalilzadeh, Ahmad Shariati,