The eliminate of 2,4-dichlorophenoxyacetic acid (2,4-D) was achieved via individual and combination of catalytic hydrodechlorination (HDC) and AOPs involved peroxymonosulfate activation. The CMK-3 supported monometallic Pd catalysts with varied Pd loadings were prepared and applied in the reactions. The results showed that Pd/CMK-3 were highly active and competitive in both the HDC and AOPs of 2,4-D, and the removal efficiencies were 91.6 and 95.2% over Pd₃/CMK-3 respectively after reaction for 90 min. The dechlorination of 2,4-D was completed via both the stepwise and concerted pathways while the reactant experienced free radical oxidation processes in the AOPs. For the combined HDC-AOPs reaction, Pd/CMK-3 reflected a good advanced oxidation ability after the effective HDC of 2,4-D. Additionally, the catalysts exhibited higher Pdⁿ⁺/Pd⁰ ratios after reactions and metal Pd was more stable after the reductive dechlorination than that of advanced oxidation.

2，4-二氯苯氧基乙酸（2,4-D）的消除是通过催化加氢脱氯（HDC）和涉及过氧单硫酸盐活化的AOP的单独和组合实现的。制备了具有不同Pd负载量的CMK-3负载型单金属Pd催化剂，并将其应用于反应中。结果表明，Pd / CMK-3在2,4-D的HDC和AOP中均具有很高的活性和竞争力，其去除效率比Pd ₃分别高91.6％和95.2％。/ CMK-3反应90分钟后。2,4-D的脱氯反应通过逐步途径和协同途径完成，而反应物在AOP中经历了自由基氧化过程。对于合并的HDC-AOPs反应，Pd / CMK-3在有效的2,4-D HDC反应后具有良好的高级氧化能力。另外，催化剂在反应后表现出较高的Pd ^{n +} / Pd ⁰比，并且金属Pd在还原脱氯后比高级氧化更稳定。