FLUID BED VINYL ACETATE CATALYST

A CATALYTICALLY ACTIVE MATERIAL USEFUL TO PREPARE VINYL ACETATE MONOMERFROM ETHYLENE, ACETIC ACID, AND AN OXYGEN-CONTAINING GAS UNDER FLUID BEDCONDITIONS COMPRISES A POROUS MICROSPHEROIDAL SUPPORT CONTAINING CATALYTICALLY ACTIVE PALLADIUM CRYSTALLITES FINELY DISPERSED WITHIN THE SUPPORT. THIS CATALY...

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Hauptverfasser:	SALEM, GEORGE FREDERICK, BAKER, MICHAEL JAMES
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS APPARATUS THEREFOR CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY CHEMISTRY COMPOSITIONS BASED THEREON GENERAL METHODS OF ORGANIC CHEMISTRY MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVINGCARBON-TO-CARBON UNSATURATED BONDS METALLURGY ORGANIC CHEMISTRY ORGANIC MACROMOLECULAR COMPOUNDS PERFORMING OPERATIONS PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL THEIR PREPARATION OR CHEMICAL WORKING-UP THEIR RELEVANT APPARATUS TRANSPORTING
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Zusammenfassung:	A CATALYTICALLY ACTIVE MATERIAL USEFUL TO PREPARE VINYL ACETATE MONOMERFROM ETHYLENE, ACETIC ACID, AND AN OXYGEN-CONTAINING GAS UNDER FLUID BEDCONDITIONS COMPRISES A POROUS MICROSPHEROIDAL SUPPORT CONTAINING CATALYTICALLY ACTIVE PALLADIUM CRYSTALLITES FINELY DISPERSED WITHIN THE SUPPORT. THIS CATALYST MATERIAL DOES NOT REQUIRE INCORPORATION OF GOLD TO MAINTAIN ACTIVITY AND SELECTIVITY. A PROCESS TO PRODUCE A VINYL ACETATE FLUID BED CATALYST IN WHICH CATALYTICALLY ACTIVE SMALL PALLADIUM CRYSTALLITES ARE FINELY DISPERSED WITHIN THE SUPPORT COMPRISES DISPERSING SELECTED METAL SPECIES WITHIN THE SUPPORT WHICH HAVE AN AFFINITY TO PALLADIUM TO FORM VERY FINE CRYSTALLITES OF PALLADIUM. THE AFFINITY METAL SPECIES MAY BE DISPERSED BY IMPREGNATION ONTO A PREFORMED MICROSPHEROIDAL SUPPORT OR MAY BE INTIMATELY INCORPORATED WITHIN THE SUPPORT BEFORE IMPREGNATION WITH A SOLUBLE PALLADIUM SPECIES.