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以堇青石质陶瓷蜂窝为第一载体,活性氧化铝和铈锆复合氧化物固溶体涂层为第二载体,采用等体积浸渍法制备系列低Pd-Rh含量的三效催化剂及Co、Ni单或双掺入样品。主要研究了Co、Ni掺入对Pd-Rh型催化剂三效净化C3H8、CO、NO活性的影响,结果表明:同时掺入Co、Ni催化剂的三效净化效果优于单独掺入Co或Ni的三效净化效果,同时掺入Co、Ni时,掺入1%Co3O4和2%Ni O的催化剂净化效果最佳;350℃时,催化脱除C3H8、CO的效率分别为100%、97%,400℃时,催化脱除NO的效率为99%。
Using cordierite ceramic honeycomb as the first carrier, the active alumina and the cerium-zirconium composite oxide solid solution coating as the second carrier, a series of low-Pd-Rh three-way catalysts and a single-phase catalyst of Co and Ni Double into the sample. The effects of Co and Ni on the three-way purification of C3H8, CO and NO of Pd-Rh catalyst were studied. The results showed that the three-effect purifying effect of Co and Ni catalysts was better than that of Co or Ni alone The results showed that the catalyst with 1% Co3O4 and 2% NiO had the best purification effect when Co and Ni were mixed at the same time. The efficiency of catalytic removal of C3H8 and CO was 350%, 100% and 97%, respectively. At 400 ° C, the efficiency of catalytic NO removal is 99%.