Abstract
Presently, it is well-recognized that surface acidic sites on supported metal catalysts play an important role in promoting the hydrodeoxygenation (HDO) of lignin-derived phenolic compounds. In the present work, new insights into the promotion role of surface basic sites on the catalytic performance of MgO-decorated nanostructured ZrO2 supported Ru nanocatalysts in the HDO of guaiacol were attained. It was found that the adsorption capacity of guaiacol and the HDO ability increased with the density of surface basic sites on as-modified Ru-based catalysts. Combining surface-interface microstructural characterizations of Ru-based catalysts and catalytic testing results with in-situ diffused reflectance infrared Fourier transform spectroscopy of guaiacol adsorption, it was unveiled that surface basic sites induced by the introduction of MgO on the ZrO2 surface could favor the preferential adsorption of guaiacol through the hydroxyl group interacting with surface basic sites and thus simultaneously the indirect activation of the Cring-OCH3 bond, thereby boosting the guaiacol HDO to produce cyclohexanol via the demethoxylation and following ring-hydrogenation processes. The present study may provide a promising strategy to design next generation supported metal catalysts with the improved surface basicity for the HDO of lignocellulose-derived phenolic derivates.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
