Al对Cu基催化剂制备过程中组分流失的影响

Effects of Al on Diminishing of Elements in Cu-Based Catalys in the Course of Preparing

用酸碱共沉淀法在同样的条件下制备含Ba、Mg、Fe三组多组分的Cu基催化剂,每一组中又包括两种含Al量不同的催化剂,并对六种催化剂用原子吸收光谱进行了元素分析。结果表明:三组催化剂中,含Al量较多的那种催化剂在制备过程中,组分Cu、Ni相对于组分Zn的流失量要大于含Al量较少的催化剂;由于Al和三组Cu基催化剂中其他组分的相互作用不同,使得含Ba、Mg、Fe的Cu基催化剂制备过程中Cu、Ni相对于Zn的流失量依次减小。

In this paper, three groups of multi-element Cu-based catalysts, which were respectively barric, magnesic and ferric, were prepared by means of co-precipitation of acid and alkali. And there were two lands of catalysts in every group that contained different quantity of Al. The elements analysis of the six catalysts was done by way of atomic absorption spectrum. The results showed that in every group samples, the more Al a catalyst contained ,the more the diminishing of Cu and Ni relative to Zn in it was and that the di- minishing of Cu and Ni relative to Zn in harric, magnesic and ferric groups of catalysts decreased in turn, because the interaction of Al and the rest elements in the three groups of catalysts were different.