低温液相合成甲醇高活性铜铬硅催化剂I.制备条件对催化剂反应活性的影响

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用络合共沉淀法制备铜铬硅(Cu-Cr-Si)催化剂,并考察了制备条件对催化剂活性的影响.助剂Si的质量分数为16.7%,沉淀时溶液的pH为6.0,沉淀温度50℃,老化温度20℃.研究表明,在350℃、n(Cu)/n(Cr)/n(Si)=1/1/0.4、N2气氛中焙烧制得的催化剂,在间歇式反应釜中考察其反应活性时空产率可达185 g(h@L),且没有甲酸甲酯等副产物生成.
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