Abstract
The interactions between an oxidic support and Pt particles were explored in a series of platinum catalysts supported on amorphous silica–alumina used for the hydrogenation of tetralin and the hydrogenolysis of neopentane. The activity of the nanosized Pt particles increased with increasing intermediate electronegativity of the support for all supports with accessible Lewis acid sites. A compensation effect between the preexponential factor and the apparent energy of activation was observed for both reactions, attributed to the stronger adsorption of the reactants and intermediates on Pt induced by the increasingly electronegative supports. The product distribution in tetralin hydrogenation also points to stronger adsorption on Pt with increasing intermediate electronegativity of the support. X-ray absorption near-edge structure (XANES) findings indicate that the stronger interaction of the reactants is related to a reduced electron density on the platinum particles.
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.
