Catalytic Deoxygenation of Hydrolyzed Oil of Chlorella vulgaris Microalgae over Lanthanum-Embedded HZSM-5 Zeolite Catalyst to Produce Bio-Fuels

Microalgae, rich in lipids, offer a renewable source of green hydrocarbons, potentially reducing fossil fuel dependency. However, zeolite catalysts commonly used in conversion processes often suffer from short lifespans due to coke formation. This study investigates a lanthanum-modified HZSM-5 zeolite catalyst for converting crude microalgae oil into non-oxygenated hydrocarbons. The catalyst enhances acid sites crucial for conversion. Among variants, 10%La/HZSM-5 exhibits optimal performance, achieving maximum conversion, hydrocarbon yield, higher heating value, and deoxygenation. Lanthanum modification enhances catalytic conversion by adjusting acidic sites, promising benefits for diverse energy applications over costlier, less stable catalysts.