Copper series purifying agent and preparation method thereof

The invention relates to a copper series purifying agent and a preparation method thereof. The purifying agent is a carrier system, is loaded with Cu and also loaded with one or more metals, such as Zn, Al, Mg, Zr and Mn or metal oxides thereof; and the prepared purifying agent can effectively eliminate Fe(CO)5 and Ni(CO)4 in a synthesis gas and plays a role of removing O2. The preparation methodcomprises the following steps of: mixing, cocurrent flow coprecipitation, ageing, carrier loading, drying, tableting and forming and the like. The purifying gent prepared by the preparation method issuitable for the synthesis gas containing CO, CO2 and H2 and is especially suitable for a device for synthesizing methanol by using the synthesis gas.