Interaction between Chromium Oxide and Its Silica-Alumina Support and Activity of the Resulting Polymerization Catalyst
- 1 January 1968
- journal article
- research article
- Published by Taylor & Francis in Journal of Macromolecular Science: Part A - Chemistry
- Vol. 2 (1) , 135-152
- https://doi.org/10.1080/00222336808053353
Abstract
Differential thermal analysis and composition, texture, and coverage measurements were carried out and gave evidences for chemical interaction between chromium oxide and the silica-alumina support of an olefin polymerization catalyst. Such interactions are related to the activity vs. propene polymerization and these relations allow to suggest that the active centers involve a layer of trivalent chromium oxide linked to the support by chromosiloxan bonds and covered with one or more layers of hexavalent chromium oxide.Keywords
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