Exploration of P-Mentan-3-OL Compounds Through Catalytic Reaction Against Sitronelal Using Cu / ZnBr2 / γAl2O3 Catalyst and Gas N2 and H2

Abstract

Exploration compound p-menthan-3-ol has been carried out using Cu/ZnBr₂/γ-Al­₂O₃ as a catalyst in N2 and H2 atmospheric gases. This research was done in several stages that is Cu/ZnBr₂/γ-Al­₂O₃ catalyst preparation, catalyst characterization, and catalytic reactions toward citronellal. Impregnation of Cu (NO₃)₂.3H₂O in ZnBr₂/γ-Al­₂O₃ wasperformed in methanol as a solvent for Cu/ZnBr₂/γ-Al­₂O₃ catalyst preparation. Stage was followed by a catalytic reaction to citronellal that performed in a glass reactor modification with atmospheric gases H₂; N₂ and H₂ at 90 ^OC temperature variations and 120 ^OC. Catalyst characterizations was performed using XRD and SEM - EDX, so it could be seen with either Cu was impregnated on ZnBr₂/γ-Al­₂O₃. Gas chromatography (GC) and gas chromatography - mass spectrum (GC-MS) was used to determine the activity of the catalyst through a catalytic reaction product analysis. Isopulegol was obtained from the product p- menthan-3-ol with a selectivity of 37.75 % in H₂ gas atmosphere at a temperature of 120 ^OC for 4 hours, and isopulegol selectivity was obtained in atmospheric gases N₂: H₂ = 3:2 at a temperature of 120 ^OC with reaction time of 4 hours was equal to 25.82 % .