Premium
Realistic Surface Science Models of Supported Catalysts: The Chromium Oxide Ethylene Polymerization Catalyst
Author(s) -
Thüne P.C.,
Niemantsverdriet J.W.
Publication year - 1998
Publication title -
israel journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.908
H-Index - 54
eISSN - 1869-5868
pISSN - 0021-2148
DOI - 10.1002/ijch.199800044
Subject(s) - catalysis , chemistry , chromium , polyethylene , ethylene oxide , polymerization , oxide , chemical engineering , ethylene , polymer , thin film , inorganic chemistry , chromium oxide , polymer chemistry , organic chemistry , nanotechnology , materials science , copolymer , engineering
Depositing catalytically active particles onto flat, thin oxide films which have electric conductivity forms an attractive way to make supported catalysts suitable for surface science investigations. Here we describe the development of a model system for the chromium oxide on silica catalyst used in industry for the polymerization of ethylene, the so‐called Phillips catalyst. The model system, consisting of molecularly dispersed chromium ions, deposited by wet chemical impregnation on a thin silica film and anchored to it by treating it in oxygen, displays a representative activity for polyethylene formation.