制备条件对CuZnAlZr催化剂物理性质的影响

Effect of preparation conditions on physical properties of CuZnAlZr catalyst

由CO2加H2制二甲醚是CO2实现循环利用的一个重要途径.本文研究结果表明制备高比表面积CuZnAlZr催化剂的合理条件为:使用Cu、Zn、Al、Zr的硝酸盐的质量分数为10%的试剂,老化温度为130℃,老化时间为15 h,在此条件下得到比表面积为211.4 m2/g的催化剂颗粒.SEM、FT-IR、XRD表征表明催化剂颗粒为氧化物颗粒,颗粒细小,分布均匀,纯度高,为纳米颗粒.

It is an important way to achieve CO2 cycle utilization by synthesis of dimethyl ether via CO2 and H2.The experimental results reveal that the available conditions to prepare CuZnAlZr catalyst are Cu,Zn,Al,Zr nitrates are 10%（mass fraction）,aging time is 15 h,aging temperature is 130 ℃.The specific surface area of the synthesed catalyst attains to be 211.4 m2/g.FT-IR,XRD,SEM results show that the catalyst has high purity,homogenous and nanometer oxides.