关键词:

离子交换树脂, 负载, 活性炭, 吸附, 噻吩

Abstract:

Spherical activated carbons supported with elemental Ag, Cu, and Ni were synthesized by cation exchange of type 122 phenolic cation exchange resin followed by carbonization and activation.The pore structure and the metal loading state of the activated carbons were characterized with N₂ adsorption, X-ray diffraction (XRD), and scanning electron microscope (SEM), respectively.Characterization results showed that metals in the activated carbons existed in elemental form, and the specific surface area and pore volume of the activated carbons decreased slightly compared with unsupported activated carbon.The desulfurization performance of the activated carbons was evaluated by adsorptive removal of thiophene from thiophene-cyclohexane binary solution with breakthrough sulfur capacity as the criterion for evaluation.The adsorption mechanism of thiophene on these activated carbons was discussed.The adsorption experimental results showed that the breakthrough sulfur capacity of Ag, Cu, and Ni loaded spherical activated carbons were 3.66，4.43 and 5.07 mg•g^-1, respectively, in contrast with 1.46 mg•g^-1 for unsupported carbon.

Key words:

离子交换树脂, 负载, 活性炭, 吸附, 噻吩