An infrared study of species from ethylene, hydrogen and carbon monoxide adsorbed on palladium/silica catalysts

Two different procedures, A and B, for preparing palladium on silica catalysts give different infrared spectra, and to a large measure different surface species, from the adsorption of ethylene, hydrogen or carbon monoxide. A π-species (I) from ethylene is found on both catalyst preparations. On pre...

Full description

Saved in:
Bibliographic Details
Published in:Journal of molecular structure 1982-01, Vol.80, p.175-179
Main Authors: James, D.I., Sheppard, N.
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Two different procedures, A and B, for preparing palladium on silica catalysts give different infrared spectra, and to a large measure different surface species, from the adsorption of ethylene, hydrogen or carbon monoxide. A π-species (I) from ethylene is found on both catalyst preparations. On preparation A the other dominant species is probably the σ-diadsorbed species (II). On preparation B additional strong bands are tentatively interpreted in terms of a doubly π - bonded non-associatively adsorbed species (III). Only preparation B gives absorptions in the accessible region above 1300 cm −1 which can be attributed to adsorbed hydrogen. ▪
ISSN:0022-2860
1872-8014
DOI:10.1016/0022-2860(82)87226-8