Resource Utilization of Waste Cooking Oil Catalyzed by Na 2 CO 3 /ZSM-5.

A catalyst with a simple synthetic process and good catalytic performance was prepared using Na 2 CO 3 as the active component and ZSM-5 as the carrier for the resource utilization of waste cooking oil. The structure of Na 2 CO 3 /ZSM-5 was characterized by Fourier transform infrared spectroscopy, X-ray diffraction, and scanning electron microscopy, and the effects of parameters such as Na 2 CO 3 loading, catalyst percentage, and reaction time on the yield of fatty acid methyl esters were investigated. The results showed that the conversion of waste cooking oil to fatty acid methyl esters yielded up to 96.89% when the Na 2 CO 3 loading was 35%, the reaction temperature was 65 °C, the reaction time was 2 h, and the catalyst percentage was 1 wt %. The Na 2 CO 3 /ZSM-5 catalyst could be used to replace H 2 SO 4 or NaOCH 3 in the industrial treatment of waste cooking oil for its resource utilization.