Reduction of Cr(VI) polymerization catalysts by non-olefinic hydrocarbons

Autor:	Richard M. Buck, Max P. McDaniel, Schwerdtfeger Eric D
Rok vydání:	2012
Předmět:	chemistry.chemical_classification Ethylene Chemistry Process Chemistry and Technology Polymer Polyethylene Redox Catalysis chemistry.chemical_compound Monomer Polymerization Polymer chemistry Organic chemistry Phillips catalyst
Zdroj:	Applied Catalysis A: General. :91-99
ISSN:	0926-860X
DOI:	10.1016/j.apcata.2012.02.023
Popis:	The Phillips Cr(VI)/silica catalyst, which is widely used for commercial ethylene polymerization, is usually considered to be reduced to a lower-valent active Cr species in the reactor upon contact with ethylene or other α-olefin monomers. In this paper, however, the case is presented that Cr(VI) is actually quite reactive with other hydrocarbons to which it is also often exposed, including alkanes and aromatics. Redox products from these reactions are identified, and the effect on catalyst polymerization activity and polymer character is described.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3eef209218b8293f89c327ffe7bce92f https://doi.org/10.1016/j.apcata.2012.02.023 Zobrazit plný text záznamu Full Text from ScienceDirect