Abstract
Temperature-programmed reduction measurements of SiO 2-supported RuCu catalysts prepared from metal nitrates indicate the presence of only bimetallic particles in catalysts in which hydrogen chemisorption and catalytic activity measurements previously suggested a low degree of contact between the metals. It is proposed that the large effect of Cu addition observed in RuCu catalysts prepared from RuCl 3 (Sinfelt, J. H., J. Catal. 29, 308, 1973) takes place because a greater proportion of Cu is well spread on the surface of the bimetallic particles favored by the presence of chlorine adsorbed on Ru. Oxidation at high temperature causes the segregation of the metals into Ru-rich and Cu-rich bimetallic particles separated onto the support, as suggested by temperature-programmed reaction of C deposited on the catalysts.
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.
