Effect of Hydrogen on the Sintering of Pt-Black Catalyst and on its Activity in Skeletal Hydrocarbon Reactions*
Year: 1989
Type: article
Abstract: Pt-black samples were sintered in hydrogen at 473 and 633 K. Their surface composition and electron mierographic images are discussed together with their catalytic activity in reactions of n-hexane and methylcyclopentane.Pt-473 is more active in n-hexane reactions than Pt-633; also a different hydrogen pressure sensitivity is observed.Methylcyclopentane transformations show much less differences; thus these two reactants exhibit different structure sensitivities.Hydrocarbons and hydrogen compete for active sites, the availability and hyd- rogen content of which may be lower on the more carbonized -Pt-633.
Authors: Zoltán Paál, Helga Zimmer, John R. Günter
Institutions: University of Zurich, Hungarian Academy of Sciences
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2323763510