Catalytic cracking of crude palm oil into biogasoline over HZSM-5 and USY-Zeolite catalysts: A comparative study

Abstract

This study comprehensively evaluated HZSM-5 and USY-Zeolite as catalysts for producing biogasoline from crude palm oil through a catalytic cracking method, including uncertainty analysis. This study utilized HZSM-5 and USY-Zeolite as catalysts with crude palm oil (CPO) concentration ratios of 1:50, 1:75, 1:100, and 1:125. USY-Zeolite (19.06 %) exhibited a higher biogasoline yield than HZSM-5 (39.56 %) because of its optimal pore structure, as proven by N₂ physisorption characterization. Physicochemical characterization of biogasoline included flash point, viscosity, boiling point, and octane number measurements. Gas chromatography-mass spectrometry (GC–MS) was used to determine the chemical composition of biogasoline. An elevated catalyst ratio results in reduced liquid yields and biogasoline fractions. At a ratio of 1:125, the HZSM-5 catalyst produced the highest biogasoline yield (39.56 %). GC–MS analysis revealed that biogasoline contained various hydrocarbons and oxygenated compounds. Life cycle assessment (LCA) also demonstrated that this method can reduce the scarcity of mineral and fossil resources by 85 % and 35 %, respectively. Biogasoline's physical and chemical characteristics are significantly impacted by the type of catalyst and its various modifications. This study provides evidence that the catalytic cracking technique is suitable for producing biogasoline from CPO and yields positive results.