Controlling Hydrodeoxygenation of Stearic Acid to n-Heptadecane and n-Octadecane by Adjusting the Chemical Properties of Ni/SiO₂-ZrO₂ Catalyst

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• 作者：Sebastian Foraita ; Dr. Yue Liu ; Prof. Dr. Gary L. Haller ; Dr. Eszter Bará ; th ; Dr. Chen Zhao and Prof. Dr. Johannes A. Lercher
• 刊名：ChemCatChem
• 出版年：2017
• 出版时间：January 9, 2017
• 年：2017
• 卷：9
• 期：1
• 页码：195-203
• 全文大小：1658K
• ISSN：1867-3899

文摘

A series of SiO₂–ZrO₂ mixed oxides with varying SiO₂ concentrations were hydrothermally synthesized and used as support for Ni in the hydrodeoxygenation of stearic acid. ZrO₂ provides a relatively low surface area and only Lewis acid sites, and Ni supported on ZrO₂ produces n-heptadecane from stearic acid through hydrogenation and decarbonylation. The SiO₂–ZrO₂ mixed oxides have a higher specific surface area than ZrO₂ as well as an unprecedented spherical and nanolayered morphology. Brønsted acid sites were created by the incorporation of SiO₂ into ZrO₂, promoting the hydrodeoxygenation activity of Ni and specifically opening a new reaction route to n-octadecane through the dehydration of 1-octadecanol intermediate into 1-octadecene with subsequent hydrogenation.