HPW/PAM Catalyst for Oxidative Desulfurization-Synthesis, Characterization and Mechanism Study

In this work, polyacrylamide (PAM) was first used in the loading of heteropoly acids, and then the HPM/PAM-n catalyst was synthesized by simple reaction. The FTIR and SEM measurements showed that the HPM/PAM-n (n = 10,000, 20,000, 30,000) was successfully synthesized. In addition, the HPM/PAM-n effect on desulfurization was measured, which showed the optimal desulfurization efficiency. The optimal process condition for HPM/PAM-10000 desulfurization was optimized by a single-factor experiment. The optimal condition was as follows: The temperature was 60 degrees C, the amount of the catalyst was 0.2 g, the oxygen to sulfur ratio was 16, and the reaction time is 100 min. The catalyst was suitable for recycled use, and the desulfurization efficiency was high after 10 times. In the end, the oxidative desulfurization mechanism was put forward.

Automated summary

Polyacrylamide (PAM) was used for the first time in loading heteropoly acids, and the HPM/PAM-n catalyst was successfully synthesized. The effects of HPM/PAM-n on desulfurization were investigated, and the optimal desulfurization efficiency was achieved. The optimal conditions for HPM/PAM-10000 desulfurization were determined, and the catalyst showed high desulfurization efficiency even after 10 cycles. The oxidative desulfurization mechanism was proposed.