Nickel catalysts for the hydrodeoxygenation of biodiesel

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• 作者：V. O. Dundich ; S. A. Khromova ; D. Yu. Ermakov ; M. Yu. Lebedev ; V. M. Novopashina ; V. G. Sister ; A. I. Yakimchuk and V. A. Yakovlev
• 刊名：Kinetics and Catalysis
• 出版年：2010
• 出版时间：October 2010
• 年：2010
• 卷：51
• 期：5
• 页码：704-709
• 全文大小：629.7 KB

文摘

A number of nickel and nickel-copper catalysts for the hydrodeoxygenation of fatty acid esters (biodiesel) were studied. The CeO₂ and ZrO₂ oxides and the CeO₂-ZrO₂ binary system were used as supports. The Ni-Cu/CeO₂-ZrO₂ catalyst exhibited the highest activity; it allowed us to quantitatively convert biodiesel into linear alkanes under mild conditions (290–320¡ãC, 1.0 MPa). It was found that the selectivity of the formation of the main product (heptadecane) was 70–80 % . The main correlations between the nature of catalysts and their activity under conditions of the target reaction were determined using temperature-programmed reduction, X-ray diffraction analysis, and electron microscopy. It was hypothesized that the high activity of Ni-Cu/CeO₂-ZrO₂ in the test reaction can be explained by the presence of a Ni_{1 − x} Cu _x (x = 0.2–0.3) solid solution as a constituent of the active component of the catalyst.