CHARACTERIZATION AND DEHYDROGENATION ACTIVITY OF PT NB2O5 CATALYSTS/

Authors
ARANDA DAG RAMOS ALD PASSOS FB SCHMAL M
Citation
Dag. Aranda et al., CHARACTERIZATION AND DEHYDROGENATION ACTIVITY OF PT NB2O5 CATALYSTS/, Catalysis today, 28(1-2), 1996, pp. 119-125
Citations number
31
Categorie Soggetti
Engineering, Chemical","Chemistry Applied","Chemistry Physical
Journal title
Catalysis today → ACNP
ISSN journal
09205861
Volume
28
Issue
1-2
Year of publication
1996
Pages
119 - 125
Database
ISI
SICI code
0920-5861(1996)28:1-2<119:CADAOP>2.0.ZU;2-O
Abstract
Pt/Nb2O5 catalysts were prepared with different loadings of Pt and cha racterized by TPR, DRS, H-2 and CO chemisorption and H-2/O-2 titration . Higher metal content catalysts presented an increasing SMSI effect r elated to a lower adsorption capacity. The Pt blocking by NbOx species causes the formation of new interfacial active sites. After a high te mperature reduction, the catalysts were highly selective towards dehyd rogenation products and total inactive for hydrogenolysis in the case of n-heptane conversion.