Progress Research Of Antiager4010NA Synthesis

Antiager4010NA, as one kind of the most important antiager, is widely applied inrubber industry. In this paper,4010NA was synthesized as acetone and4-aminodiphenylamine bake division (RT) were used as raw materials and Pt/C was used ascatalyst. The influence of preparation process of catalyst on catalytic activity and theoptimum process conditions of synthesizing4010NA were studied. In addition, thecatalytic activity of Pt/C and Pt/CMK-3were compared.The influence of preparation process of catalyst on catalytic activity was studiedand it was concluded that carbon carriers with moderate particle size, high specificsurface area, relatively more micropore and mesopore, and abundant surface functionalgroups of activated carbon acid was the best carrier; pretreated with20%nitric acid,the carbon carrier would get proper specific surface area and rich acid oxygencontaining functional groups; when the catalyst was prepared by excessive immersionwith3%weight of Pt loaded, the Pt was in a high degree of dispersion and the catalystperformed well.The synthesis process conditions were investigated and it was concluded thatwhen the amount of catalyst is1.5%, ketone amine ratio is1:4, the reactiontemperature is120℃, hydrogenation pressure is3.5MPa and the stirring speed is400rpm, there would be a high yield of high quality4010NA.CMK-3and activated carbon were compared and it was found that CMK-3hadhigher specific surface area and richer channel system than activated carbon, and withthe same Pt load, Pt/CMK-3performed better than Pt/C.The two kind of catalysts were used in synthesis of4010NA and it was found thatPt/C was used50times, added7times, Pt/CMK-3was used59times, added6times,and the crystallizing point were all70℃. It was concluded that Pt/C and Pt/CMK-3prepared in this paper could worked well in the actual progress of4010NA, andPt/CMK-3performed better.The deactivated catalysts were characterized by XRD, BET, MSA and ICP, and itwas found that a low loss of metal components and MSA decrease happened to thecatalyst deactivated. The catalyst deactivation was mainly due to carbon deposit. Thecatalysts deactivated were regenerated by using supercritical CO2and organic solvents,and it was found that supercritical CO2and acetone were the excellent combination.