Aluminosilicate carrier for metathesis catalysts
AssigneeRWE-DEA Aktiengesellschaft fur Mineraloel und Chemie
InventorsKlaus Noweck, Andreas Hoffmann
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Abstract
Rhenium oxide catalysts carried on aluminium silicates, if required with added boric oxide, tungsten oxide, molybdenum oxide or vanadium oxide for the metathesis of olefins and functionalised olefins, in particular of carboxylic acid esters, are provided, whereby the carrier material was hydrothermally treated.
Claims19
A method for the catalytic metathesis of unsaturated compounds selected from the group consisting of olefins, olefins containing functional groups, and unsaturated carboxylic acid esters, comprising pass the compounds over a rhenium oxide catalyst carried on aluminum silicate carrier, where the aluminum silicate carrier is made from at least one silicon compound that can supply SiO.sub.2 and an aluminum compound in an aqueous environment, where the aluminum silicate/water mixture is subjected to a temperature treatment of from 90.degree. to 235.degree. C. for a period of 0.5 to 20 hours.
Rhenium oxide catalysts carried on aluminum silicate carriers, comprising aluminum silicate carriers made from at least one silicon compound that can supply SiO.sub.2 and an aluminum compound in an aqueous environment, where the aluminum silicate/water mixture is subjected to a temperature treatment of from 90.degree. to 235.degree. C. for a period of 0.5 to 20 hours.
Reactivated rhenium oxide catalysts carried on aluminum silicate carriers, comprising aluminum silicate carriers made from at least one silicon compound that can supply SiO.sub.2 and an aluminum compound in an aqueous environment, where the aluminum silicate/water mixture is subjected to a temperature treatment of from 90.degree. to 235.degree. C. for a period of 0.5 to 20 hours, and where the rhenium oxide catalysts on aluminum silicate carriers were reactivated after use by a process comprising separating, drying, then thermally treating the catalyst at elevated temperatures from 300.degree. to 700.degree. C.
A method of making rhenium oxide catalysts on aluminum silicate carriers, the method comprising
- reacting at least one silicon compound that can supply SiO.sub.2 and an aluminum compound in an aqueous environment;
- and
- subjecting the aluminum silicate/water mixture to a temperature treatment of from 90.degree. to 235.degree. C. for a period of 0.5 to 20 hours.
Dependencies are inferred from the claim text.