SYNTHESIS, CHARACTERIZATION AND APPLICATION OF Ni /SiO2 HETEROGENEOUS NANO CATALYST IN OPTIMIZATION OF METHYL ESTER FROM Khaya senegalensis SEED OIL

Journal of Nanoanalysis

مقالات آماده انتشار، پذیرفته شده، انتشار آنلاین از تاریخ 05 اسفند 1400

نوع مقاله: Original Research Paper

شناسه دیجیتال (DOI): 10.22034/jna.2022.1928789.1253

نویسندگان

Mela Yoro^{* 1}؛ Wilson Danbature Lamayi²؛ Nasiru Yahaya Pindiga³؛ Zaccheus Shehu⁴

¹Department of Chemical Sciences, Faculty of Science, Federal University of Kashere, Gombe, Nigeria

²Chemistry department, Faculty of Science, Gombe State University, Nigeria.

³Department of Chemistry, Gombe state University, Nigeria

⁴Chemistry Department, Faculty of Science, Gombe State University, Gombe, Nigeria.

چکیده

Ni / SiO2 heterogeneous nano catalyst was synthesized and characterized using different analytical tools including FT-IR, UV spectrophotometer, SEM equipped with an energy dispersive X-ray spectrometer (EDX), and XRD. The synthesized catalyst was used in the transesterification of methyl ester produced from mahogany seed oil. The reaction conditions for the transesterification process were optimized. The yield of 85% was achieved when the reaction was carried using Ni / SiO2 with concentration of 1.5% wt, volume ratio of methanol to oil of 5:1, reaction temperature of 60 °C, and a reaction time of 120 min. The Ni / SiO2 nano catalyst was regenerated from the mixture and was reused for various circles by applying the optimum conditions obtained during the present study. The results showed that the methyl ester yield decreased exponentially by increasing the cycle number when the regenerated catalyst was used. However, good conversion (>72%) was obtained up to the 4th cycles. It could be concluded that Ni / SiO2 nano catalyst is catalytically active and may serve as a potential catalyst for biodiesel production.

کلیدواژه‌ها

Methyl ester؛ Nano catalyst؛ Optimization؛ Characterization