Hydrogenation of methyl oleate into methyl stearate over cobalt supported zinc aluminate catalysts
Keywords:
Hydrogenation Methyl stearate Cobalt Zinc aluminate Methyl oleateAbstract
This study evaluated the hydrogenation of methyl oleate at 8 MPa and 270 °C with monometallic cobalt heterogeneous catalyst supported by impregnation on zinc aluminate synthesized by a simple one-step solvothermal route using different types of alcohol/water (methanol/water, ethanol/water, n-propanol/water and isopropanol/water) mixture solvents. The catalysts were characterized by different techniques (X-ray powder diffraction, gas adsorption analysis and diffuse reflectance ultraviolet-visible spectroscopy). Hydrogenation of methyl oleate with this catalyst produced a mixture of methyl stearate, stearyl alcohol, hydrocarbons, oleyl alcohol and oleic acid. The supported cobalt catalyst on the zinc aluminate synthesized in ethanol/water and isopropanol/water solvent exhibited good selectivity for hydrogenation of methyl oleate to methyl stearate.
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