Hydrodeoxygenation of Palmitic and Stearic Acids on Phosphide Catalysts Obtained In Situ in Reaction Medium

• Published in: Petroleum chemistry Vol. 59; no. 12; pp. 1326 - 1330
• Main Authors: Golubeva, M. A., Maksimov, A. L.
• Format: Journal Article
• Language: English
• Published: Moscow Pleiades Publishing 01.12.2019; Springer; Springer Nature B.V
• Subjects: Catalysts; Chemical industry; Chemistry; Chemistry and Materials Science; Cobalt; Conversion; Diffraction; Industrial Chemistry/Chemical Engineering; Palmitic acid; Phosphides; Photoelectrons; Saturated fatty acids; Stearic acid; Substrates; X ray powder diffraction; X-ray spectroscopy; X-rays; P; CoP; hydrodeoxygenation; green diesel; transition metal phosphides; vegetable oils; Ni
• ISSN: 0965-5441; 1555-6239
• DOI: 10.1134/S0965544119120041

Unsupported phosphide catalysts of composition Ni 2 P and CoP are prepared in situ in the reaction medium from oil-soluble precursors in the course of hydrodeoxygenation of palmitic and stearic acids. The obtained catalysts are characterized by X-ray powder diffraction and X-ray photoelectron spectroscopy; they show high activity in the hydrodeoxygenation of model substrates. After 6 h of the hydrodeoxygenation reactions, the conversion of palmitic acid reaches 93 and 92% and the conversion of stearic acid is as high as 94 and 91% in the presence of nickel phosphide and cobalt phosphide, respectively. It is shown that the catalyst formed in situ can be isolated and recycled.