The oxyhydrochlorination of methane on fumed silica-based Cu, K, La catalysts: III. Bulk & surface analysis

Autor:	W.J.M. Pieters, Wm. Curtis Conner, Anthony J. Signorelli
Rok vydání:	1984
Předmět:	chemistry.chemical_classification Alkane Inorganic chemistry General Engineering chemistry.chemical_element Copper Catalysis chemistry.chemical_compound Hydrocarbon chemistry Oxidation state sense organs Hydrogen chloride Dissolution Fumed silica
Zdroj:	Applied Catalysis. 11:59-71
ISSN:	0166-9834
DOI:	10.1016/s0166-9834(00)84040-3
Popis:	Oxyhydrochlorination (OHC) is the reaction between hydrogen chloride, oxygen and a hydrocarbon to give chlorocarbons and water, viz: To-understand the activity we studied the crystalline phases (by XRD) and surface copper oxidation states by ESCA (XPS). The reversible uptake of oxygen and dissolution (loss of crystallinity) were characteristic of active catalysts and were promoted by potassium. Activity was found for a high Cu +l /Cu +2 surface concentration. This oxidation state ratio was developed by proper catalyst preparation, activation and reactant introduction. Our results imply a specific sequence of reactant interaction during the catalysis.
Databáze:	OpenAIRE
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