Microporous spherical activated carbons are used as supports for the preparation of Pd/activated carbon catalyst.The catalyst's catalytic performance for the oxidation of ethyl acetate and toluene under different palladium loading,space velocities,and concentrations is investigated.Characterization results by Inductively Coupled Plasma(ICP),X-ray diffraction(XRD),X-ray photoelectron spectroscopy(XPS)demonstrate that Pd has been successfully loaded on the microporous spherical activated carbon.Experimental results show that the catalytic performance of the catalyst improves with the increase of palladium loading amount.At a space velocity of 12 000 mL/(g-h),the T90 of ethyl acetate and toluene can be reduced to 276.8℃ and 198.1℃,respectively by the catalyst with 3.0％of Pd loading amount.After the catalyst has been operated for 168 hours in a simulated VOCs oxidation environment,the T90 of ethyl acetate and toluene increases by to 2.8℃ and 4.7℃,indicating a good stability.
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