Abstract
A number of methods for the preparation of Aerosil-platinum-gold catalysts was tested using transmission electron microscopy (TEM) and, in some cases, hydrogen chemisorption and X-ray diffraction. With moderate metal loading (5 w/w%) the incipient wetness approach in a number of variations led to poorer metal dispersion than did a cation exchange method. However, at low metal loading (1 w/w%) the incipient wetness method gave excellent dispersion (“clusters”) as also with titania as support. Reaction of n-pentane and of 3,3-dimethylpentane on the cluster catalysts showed the bimetallic clusters to be highly selective hydrogenolysis catalysts. Supporting platinum as dusters on titania gave catalysts which displayed excellent dehydrocyclisation selectivity. These results are interpreted in terms of electronic effects.
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.
