科创中国

Study on Cu/MgO/ZnO catalyst for low-temperature synthesis of methanol

• 摘要：

  A series of Cu/MgO/ZnO catalysts with different Cu:(Mg+Zn) and Mg:Zn molar ratios were prepared by conventional co-precipitation method, which are used for low-temperature methanol synthesis. And Cu/ZnO and Cu/MgO catalysts were prepared as well. Comparison was made among them by characterization. Addition of MgO to Cu/ZnO catalyst could introduce more dispersed Cu⁺ sites, therefore the catalytic activity was promoted. At 443 K and 5.0 MPa, the activities of prepared catalysts were tested in a slurry reactor using liquid paraffin as solvent. The results indicated that the activity of Cu/MgO/ZnO catalyst was superior to that of Cu/ZnO and Cu/MgO, and when Cu:Mg:Zn=2:1:1, the catalyst had the highest activity: the conversion rate of CO was as high as 63.56%, and the selectivity and space time yield of methanol reached 99.09% and 5.413 mol/(kg · h) respectively. The deactivation phenomenon of Cu/MgO/ZnO catalyst was observed under high reaction temperature, and the characterization results indicated that it was due to the sintering of Cu particles.

• 作者：

  Yuan Li;香平 张;Lei Wang;春山 李;Long Liu;Tian Long Zhang;锁江 张

• 刊名：

  Guocheng Gongcheng Xuebao/The Chinese Journal of Process Engineering

• 在线出版时间：

  2010-8