每周分享：The effect of preparation method of the Cu–La2O3–ZrO2/γ-Al2O3 hybrid catalysts on one-step synthesis of dimethyl ether from syngas

   今天给大家分享的是2014年4月份 《Fuel》上发表的一篇名为：The effect of preparation method of the Cu–La2O3–ZrO2/γ-Al2O3 hybrid catalysts on one-step synthesis of dimethyl ether from syngas

文章摘要如下：

Cu–La2O3–ZrO2/γ-Al2O3 hybrid catalysts were prepared by four different preparation methods. The catalysts were characterized by N2 adsorption and desorption, N2O adsorption, X-ray diffraction (XRD), temperature programmed reduction (H2-TPR), temperature programmed desorption (NH3–TPD) and Fourier transform infrared (FTIR), followed by the evaluation for the one-step synthesis of dimethyl ether from syngas. The hybrid catalyst prepared by mixing freshly obtained precursors of both components possessed the highest CO conversion (73%) and DME yield (58%). It was revealed that the superior catalytic performance was not only ascribed to the amount of highly dispersed copper species with smaller particle size, which was benefit for the CO adsorption linearly, but also to the amount of acidic sites with medium strength.

该文章中材料表征采用的是美国麦克仪器AutoChem 2920

详情可参考下面链接：

http://www.sciencedirect.com/science/article/pii/S0016236113011940