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Controlling Hydrodeoxygenation of Stearic Acid to n ‐Heptadecane and n ‐Octadecane by Adjusting the Chemical Properties of Ni/SiO 2 –ZrO 2 Catalyst
Author(s) -
Foraita Sebastian,
Liu Yue,
Haller Gary L.,
Baráth Eszter,
Zhao Chen,
Lercher Johannes A.
Publication year - 2017
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201601162
Subject(s) - heptadecane , hydrodeoxygenation , stearic acid , octadecane , catalysis , decarbonylation , chemistry , organic chemistry , tartaric acid , chemical engineering , inorganic chemistry , materials science , selectivity , citric acid , engineering
Abstract A series of SiO 2 –ZrO 2 mixed oxides with varying SiO 2 concentrations were hydrothermally synthesized and used as support for Ni in the hydrodeoxygenation of stearic acid. ZrO 2 provides a relatively low surface area and only Lewis acid sites, and Ni supported on ZrO 2 produces n ‐heptadecane from stearic acid through hydrogenation and decarbonylation. The SiO 2 –ZrO 2 mixed oxides have a higher specific surface area than ZrO 2 as well as an unprecedented spherical and nanolayered morphology. Brønsted acid sites were created by the incorporation of SiO 2 into ZrO 2 , 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.