Synthesis and adsorption characteristics of hypercrosslinked polymeric adsorption resin modified by m-aminophenol

A new hypercrosslinked polymeric adsorption resin modified by m-Aminophenol(MMAR) is prepared.The structure of resin was characterized by FT-IR,the adsorption behaviors of 2-Aminopyridine in aqueous solution,including the static equilibrium adsorption and dynamic have been studied.Equilibrium data for 2-Aminopyridine the adsorption of from aqueous solutions by MMAR,Adsorption data were modeled using the Freundlich adsorption isotherm,but it do not fit well into the Langmuir equations.The ΔH absolute value was in less than 46 KJ·mol-1.The adsorption was an indicative of physical adsorption character and an easier desorption property.The negative value of ΔG indicates the spontaneous nature of the adsorption process,and the negative value of ΔS shows the 2-Aminopyridine molecule movement was fall under restrict at the solid interface.Kinetic results showed that on the adsorption behaviors of 2-Aminopyridine on MMAR resin in line with the first-order kinetic equation,the adsorption rate with increasing temperature.The adsorption rate mainly control was intra-particle diffusion.Ea10 KJ·mol-1,indicates an easier adsorption property.