The Preparation, Support Of Metal (Cu, Ce, Al) Oxides Solid Solution And The Study On Their Catalyst Performance

Ce-Cu-O solid solution catalysts have attracted much attention because of its application in environmen-protection in recent years. In this paper, we use oxalic acid, sodium hydroxide and ammonia as precipitation agent to prepare Ce-Cu-O solid solution catalysts; then we study the influence on structure with the incorporation of aluminum; Finally, we support them to study the catalytic performance. The results illustrate that:by co-precipitation method, the samples we prepared are solid solutions. When sodium hydroxide and ammonia are used as co-precipitation agent, the solid solution is hard to form. While there is aluminum added, not only the dispersion of the sample is improved, but also another new Cu-Ce-Al-O solid solutions are formed. As the Ce,Cu, Al element have different pH values, special attention should be paid to this process. With activated Al2O3 as the carrier, precipitation-coating method, the modification of aluminum, the catalytic efficiency of new-structure solid solution catalyst has improved more than 6%.