Palladium tin carbon catalyst for meropenem synthesis and preparation method

The invention discloses a palladium carbon catalyst for meropenem synthesis and a preparation method. In the catalyst, powdery active carbon is used as a carrier and loads active ingredient Pd metal and active ingredient Sn. The preparation method comprises the following steps of: after the active carbon carrier is sequentially treated by using inorganic acid and sodium hypochlorite, washing the active carbon carrier to be neutral for later use by using pure water; preparing active ingredient solution by using water-soluble Pd containing compound and diluted hydrochloric acid solution of stannous chloride in a ratio; pulping the active carbon of metered weight by using aqueous solution of alkali compound with certain concentration, heating the pulp to the temperature of between 40 and 65 DEG C with stirring and stabilizing the pulp for 1 hour; and guiding the mixed solution of Pd and Sn in a metering ratio into the active carbon pulp, continually stirring the solution for 3 to 6 hours to load the Pd and the Sn on the active carbon to obtain a catalyst precursor, ageing the catalyst precursor, and reducing the catalyst precursor by using a reducing agent to obtain a catalyst product. The palladium carbon noble metal content can be reduced to below 5 percent from 10 percent, the yield of the product is improved by 3 to 4 percent, and the using cost is effectively reduced when the yield of the product is improved.