Platinum catalyst for catalytic combustion of VOCs (Volatile Organic Compounds) and preparation method of platinum catalyst

The invention discloses a platinum catalyst for catalytic combustion of VOCs and a preparation method of the platinum catalyst. The platinum catalyst is composed of a carrier, an auxiliary agent and an active component, the carrier is a CeO2-ZrO2 mixture, the auxiliary agent is Co3O4, the active component is precious metal Pt, the molar ratio of CeO2 to ZrO2 in the carrier is 7:4 to 7:1, the active component Pt and the auxiliary agent are prepared by loading Pt(NO3)2 and Co(NO3)2.6H2O on the CeO2-ZrO2 carrier, the loading amount of Pt is 1 wt%, and the mass ratio of Pt to Co3O4 is 1:0.5 to 1:2. The platinum catalyst has the beneficial effects that the CeO2-ZrO2 mixture is used as a carrier, Co3O4 is used as an auxiliary agent, Pt is used as an active component, and the platinum catalyst has high activity on toluene and ethyl acetate. 本发明公开了一种用于VOCs催化燃烧的铂催化剂及其制备方法，该铂催化剂由载体、助剂和活性组分组成，所述载体为CeO2-ZrO2混合物，助剂为Co3O4，活性组分为贵金属Pt，载体中的CeO2和ZrO2的摩尔比为7:4～7:1，活性组分Pt和助剂是通过Pt(NO3)2和Co(NO3)2·6H2O负载到CeO2-ZrO2载体来制备，Pt负载量为1wt％，Pt