One-step synthesis of dimethyl ether from syngas on ordered mesoporous copper incorporated alumina

来源 :能源化学 | 被引量 : 0次 | 上传用户:wewe11111
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Ordered mesoporous copper incorporated Al2O3 (Cu/Al2O3) with high Cu dispersion were prepared by a facile solution combustion synthesis method using aluminum nitrate and copper nitrate as oxidants and urea as fuel.It is a facile and green route to synthesize catalysts for dimethyl ether directly from syngas.Cu/Al2O3 catalysts were characterized by XRD,N2 adsorption-desorption,SEM-EDS,and H2-TPR.The results indicate that the catalysts obtain an ordered mesoporous structure and copper is homogenously dispersed.The mesoporous Cu/Al203 catalysts were utilized as bifunctional catalysts in syngas to dimethyl ether reaction (STD).The copper content affects the catalytic performance in STD reaction.The CO conversion and DME selectivity of Cu/Al2O3 with 15% copper molar ratio achieve 52.9% and 66.1%,respectively.Moreover,the mesoporous Cu/Al2O3 catalysts show excellent stability in STD reaction.
其他文献
Three different regeneration processes including hydrogen or nitrogen purging and coke-burning treatment were used to restore the Pt-Sn/γ-Al2O3 catalysts,through which propane dehydrogenation reaction was performed in a consecutive reaction-regeneration m
CuZnAl catalysts with different La loadings were prepared by a complete liquid phase method and tested for higher alcohols (C2+OH) synthesis from syngas at the conditions of 250-290 ℃,4.SMPa,feed low rate=150mL/min and H2/CO=2.The catalysts were character
Cellulose,the most abundant organic polymer on Earth,is a sustainable source of carbon to use as a negative electrode for sodium ion batteries.Here,hard carbons (HC) prepared by cellulose pyrolysis were investigated with varying pyrolysis temperature from
The matrix catalytic function when cracking the feed oil with large molecular size was systematically studied using three different catalyst configurations,including staged bed,partly mixed bed and completely mixed bed.Results showed that molecules in the
To date,most of the research on electrodes for lithium sulfur batteries has been focused on the nanostructured sulfur cathodes and achieves significant success.However,from the viewpoint of manufacturers,the nanostructured sulfur cathodes are not so promi
Nickel modification by spontaneous deposition of transition metals such as Ag and Cu is shown as an economic and simple alternative for the activation of hydrogen evolution reaction (HER) on cathodes in alkaline media.The kinetics of HER is studied on Ni/
New metal-free organic dye sensitizers containing mono-triphenylamine or bis-triphenylamine as the electron donor,a thiophene as the π-conjugated system,and a cyanoacrylic acid moiety as the electron acceptor were synthesized.The optical and electrochemic