CuO-CeO2 catalysts were prepared by a urea precipitation method for the oxidative steam reforming of ethanol at low-temperature.The catalytic performance was evaluated and the catalysts were characterized by inductive...CuO-CeO2 catalysts were prepared by a urea precipitation method for the oxidative steam reforming of ethanol at low-temperature.The catalytic performance was evaluated and the catalysts were characterized by inductively coupled plasma atomic emission spectroscopy,X-ray diffraction,temperature-programmed reduction,field emission scanning electron microscopy and thermo-gravimetric analysis.Over CuOCeO2 catalysts,H2 with low CO content was produced in the whole tested temperature range of 250–450 C.The non-noble metal catalyst 20CuCe showed higher H2production rate than 1%Rh/CeO2 catalyst at 300–400 C and the advantage was more obvious after 20 h testing at400 C.These results further confirmed that CuO-CeO2 catalysts may be suitable candidates for low temperature hydrogen production from ethanol.展开更多
Hydrogen production from butanol is a promising alternative when it is obtained from bio-butanol or bio-oil due to the higher hydrogen content compared to other oxygenates such as methanol,ethanol or propanol.Catalyst...Hydrogen production from butanol is a promising alternative when it is obtained from bio-butanol or bio-oil due to the higher hydrogen content compared to other oxygenates such as methanol,ethanol or propanol.Catalysts and operating conditions play a crucial role in hydrogen production.Ni and Rh are metals mainly used for butanol steam reforming,oxidative steam reforming and partial oxidation.Additives such as Cu can improve catalytic activity in many folds.Moreover,support-metal interaction and catalyst preparation technique also play a decisive role in the stability and hydrogen production capacity of catalyst.Steam reforming technique as an option is more frequently researched due to higher hydrogen production capability in comparison to other thermochemical techniques despite its endothermic nature.The use of the oxidative steam reforming and partial oxidation has the advantages of requiring less energy and longer stability of catalysts.However,the hydrogen yield is less.This article brings together and examines the latest research on hydrogen production from butanol via steam reforming,oxidative steam reforming and partial oxidation reactions.In addition,the review examines a few thermodynamic studies based on sorption-enhanced steam reforming and dry reforming where there is potential for hydrogen extraction.展开更多
基金supported by the National Basic Research Program of China (2010CB732304)the National Natural Science Foundation of China (21177142 and 20973193)
文摘CuO-CeO2 catalysts were prepared by a urea precipitation method for the oxidative steam reforming of ethanol at low-temperature.The catalytic performance was evaluated and the catalysts were characterized by inductively coupled plasma atomic emission spectroscopy,X-ray diffraction,temperature-programmed reduction,field emission scanning electron microscopy and thermo-gravimetric analysis.Over CuOCeO2 catalysts,H2 with low CO content was produced in the whole tested temperature range of 250–450 C.The non-noble metal catalyst 20CuCe showed higher H2production rate than 1%Rh/CeO2 catalyst at 300–400 C and the advantage was more obvious after 20 h testing at400 C.These results further confirmed that CuO-CeO2 catalysts may be suitable candidates for low temperature hydrogen production from ethanol.
文摘Hydrogen production from butanol is a promising alternative when it is obtained from bio-butanol or bio-oil due to the higher hydrogen content compared to other oxygenates such as methanol,ethanol or propanol.Catalysts and operating conditions play a crucial role in hydrogen production.Ni and Rh are metals mainly used for butanol steam reforming,oxidative steam reforming and partial oxidation.Additives such as Cu can improve catalytic activity in many folds.Moreover,support-metal interaction and catalyst preparation technique also play a decisive role in the stability and hydrogen production capacity of catalyst.Steam reforming technique as an option is more frequently researched due to higher hydrogen production capability in comparison to other thermochemical techniques despite its endothermic nature.The use of the oxidative steam reforming and partial oxidation has the advantages of requiring less energy and longer stability of catalysts.However,the hydrogen yield is less.This article brings together and examines the latest research on hydrogen production from butanol via steam reforming,oxidative steam reforming and partial oxidation reactions.In addition,the review examines a few thermodynamic studies based on sorption-enhanced steam reforming and dry reforming where there is potential for hydrogen extraction.
