Immobilization of Potassium-Based Heterogeneous Catalyst over Alumina Beads and Powder Support in the Transesterification of Waste Cooking Oil

In this work, the beads and powder potassium hydroxide (KOH) carbonate (K2CO3) supported on alumina oxide (Al2O3) were successfully prepared via incipient wetness impregnation technique. Herein, perforated hydrophilic materials (PHM) made from low-density polyethylene (LDPE) was used as catalyst reactor bed. The catalysts investigated using TGA, XRD, BET, SEM-EDX, TPD, FTIR while spent analyzed XRF ICP-AES to study its deactivation mechanism. catalytic performance of KOH/Al2O3 K2CO3/Al2O3 evaluated transesterification waste cooking oil (WCO) biodiesel. It found that optimum conditions for reaction 1:12 oil-to-methanol molar ratio 5 wt.% at 65 °C. As a result, mesoporous size yielded 86.8% 77.3% 2 h’ time fatty acids methyl ester (FAME), respectively. revealed utilization PHM increase reusability up 7 cycles. Furthermore, FAME produced confirmed by gas chromatography-mass spectroscopic From finding, showed promising convert WCO or known