A green synthesis of CTAB–PTP/PAM microhydrogel and its application in oxidation of DBT

Abstract

Polyacrylamide (PAM) microgels covered with hexadecyltrimethylammonium (CTAB)-peroxotungstophosphate (PTP) complexes were synthesized and characterized by scanning electron microscopy and Fourier transform infrared. The results indicate the CTAB–PTP/PAM composite microsphere with surface-wrinkling morphology and PAM microgel core/CTAB–PTP shell structure. The surface-wrinkling structure changed with the amount of CTAB–PTP supported on the PAM microgels. The results based on CTAB–PTP/PAM composite microspheres used in oxidation of dibenzothiophene demonstrated that the resulting microspheres have high catalytic performance and could be reused three times with a small decrease in activity. The proposed method is commonly significant for construction of reusable catalyst used in diphase catalysis.