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发明授权
CN102166524B 原位还原法制备高合金化碳载PdFe纳米催化剂的方法 有权 转让

原位还原法制备高合金化碳载PdFe纳米催化剂的方法
摘要：
一种原位还原法制备高合金化碳载PdFe纳米催化剂的方法，在碳载体悬浮液中加入可溶性PdII盐，在30~100℃加入Fe(CN)63-或Fe(CN)64-溶液，控制PdII盐与Fe(CN)63-摩尔比为1.5:1或PdII盐与Fe(CN)64-摩尔比为2:1，充分搅拌混合物溶液，得到组分A碳载铁氰化钯或亚铁氰化钯纳米粒子，组分A中加入还原剂，充分搅拌，纳米粒子原位还原后得组分B，组分B经水洗、干燥后即得高合金化碳载PdFe纳米催化剂。本发明的催化剂对氧还原的电催化性能明显提高，表现出优异的电催化活性和稳定性。本发明的制备方法简单、经济，适合工业化大规模生产。
摘要（英）：

The invention relates to a method for preparing a high-alloying carbon-supported PdFe nanocatalyst by an in-situ reduction method. The method comprises the following steps of: adding a soluble Pd salt to a carbon support suspension, adding an Fe(CN)6<3-> or Fe(CN)6<4-> solution at 30-100 DEG C, controlling the mol ratio of the Pd salt to the Fe(CN)6<3-> to be 1.5:1 or the mol ratio of thePd salt to the Fe(CN)6<4-> to be 2:1; fully stirring the mixture solution to obtain a component A, namely carbon-supported iron palladium prussiate or ferrous iron palladium prussiate nanoparticles; adding a reducing agent to the component A, fully stirring, reducing the nanoparticles in situ to obtain a component B; and washing with water and drying the component B to obtain the high-alloying carbon-supported PdFe nanocatalyst. The catalyst provided by the invention has obviously improved electrocatalytic performance on oxygen reduction and presents excellent electrocatalytic activity and stability. The preparation method provided by the invention is simple, economical and suitable for industrial large-scale production.

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