金属蒸气法制备聚合物固载双金属催化剂 Ⅱ.聚合物比表面对Pd-Cu催化剂分散度和活性的影响

PREPARATION OF POLYMER IMMOBILIZED BIMETALLIC CATALYSTS BY METAL VAPOR METHOD Ⅱ.EFFECTS OF THE SPECIFIC AREA OF POLYMER ON DISPERSION AND ACTIVITY OF CATALYST

利用金属蒸气法制备了四种比表面不同的树脂固载ＰｄＣｕ双金属催化剂．Ｘ射线衍射和透射电镜结果表明，随着树脂比表面积增大，固载量相同的ＰｄＣｕ催化剂，ＰｄＣｕ合金的颗粒减小，因而在甲苯，４甲基４羟基２戊酮加氢和电催化反应中活性增大．

The solvated metal atom impregnation (SMAI) method was employed to prepare four resin immobolized Pd Cu bimetalic catalysts of different specific area.The results of XRD and TEM showed that as the specific area of the resin increased,the Pd and Cu particle size of the catalysts with the same metal content decreased,so the catalytical activities of the catalysts in hydrogenation of toluene and diacetone alcohol as well as in reduction of oxygen on the fuel cell electrode increased.