Citation: LI Juan, HAI Hang, YAN Chang-feng, HU Rong-rong, YAO Zhi-wei, LUO Wei-min, GUO Chang-qing, LI Wen-bo. Effect of calcination temperature on properties of Cu/ZnO/Al₂O₃/ Cr₂O₃+H-ZSM-5 bi-functional catalysts for steam reforming of dimethyl ether[J]. Journal of Fuel Chemistry and Technology, ;2012, 40(10): 1240-1245. shu

Effect of calcination temperature on properties of Cu/ZnO/Al₂O₃/ Cr₂O₃+H-ZSM-5 bi-functional catalysts for steam reforming of dimethyl ether

1.
Guangzhou Insititute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, China

Corresponding author: YAN Chang-feng,
Received Date: 20 February 2012
Available Online: 4 May 2012
Fund Project: 国家自然科学基金(20806082, 50306026) (20806082, 50306026) 广东省自然科学基金(10151007006000016)。 (10151007006000016)

The Cu/ZnO/Al₂O₃/Cr₂O₃+H-ZSM-5 performances for hydrogen production during dimethyl ether steam reforming (DME SR) were investigated,which was prepared by the co-precipitation coupling with mechanical mixing method.Meanwhile, the effect of calcination temperature on the physicochemical properties of catalysts were studied by thermogravimetry, Fourier transform infrared spectroscopy, X-ray diffraction, Brunauer-Emmett-Teller, and H₂ temperature-programmed reduction.It was revealed that Cu/ZnO/Al₂O₃/Cr₂O₃ catalyst was decomposed at 400℃ to form CuO and sponel phase that played a key role in separating the Cu during the reaction.Under lower calcination temperatures,the catalyst was incompeletely decomposed.Increasing the calcination temperature to over 500℃ caused severe sintering of CuO and facilitated the formation of spinel phase, which led to a significant decrease in the number of active sites.When the calcination temperature was controlled at 400℃, the biggest DME conversion rate of 92.9% and hydrogen yield of 76.5% was reached.
- Cu/ZnO/Al₂O₃/Cr₂O₃+H-ZSM-5 catalysts,
- calcination temperature,
- steam reforming,
- dimethyl ether,
- hydrogen
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Effect of calcination temperature on properties of Cu/ZnO/Al2O3/ Cr2O3+H-ZSM-5 bi-functional catalysts for steam reforming of dimethyl ether

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通讯作者: 陈斌, bchen63@163.com

Effect of calcination temperature on properties of Cu/ZnO/Al₂O₃/ Cr₂O₃+H-ZSM-5 bi-functional catalysts for steam reforming of dimethyl ether