Method for Extending Catalyst Life in Processes for Preparing Vinyl Aromatic Hydrocarbons
AssigneeFina Technology, Inc.
InventorJames Butler
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Abstract
Methods and systems for extending the life of a dehydrogenation catalyst are described herein. For example, one embodiment includes providing an alkyl aromatic hydrocarbon feed stream to a reaction chamber, contacting the feed stream with a dehydrogenation catalyst to form a vinyl aromatic hydrocarbon, the dehydrogenation catalyst including iron oxide and an alkali metal catalysis promoter and supplying a catalyst life extender to at least one reaction chamber, the reaction chamber loaded with the dehydrogenation catalyst, wherein the catalyst life extender includes a potassium salt of a carboxylic acid.
Claims11
A method for preparing a vinyl aromatic hydrocarbon comprising:
- providing a feed stream comprising an alkyl aromatic hydrocarbon;
- contacting the feed stream with a dehydrogenation catalyst to form a vinyl aromatic hydrocarbon, the dehydrogenation catalyst comprising iron oxide and an alkali metal catalysis promoter;
- and
- supplying a catalyst life extender to at least one reaction chamber, the reaction chamber loaded with the dehydrogenation catalyst, wherein the catalyst life extender comprises a potassium salt of a carboxylic acid and is supplied to the reaction chamber in aqueous form.
Dependencies are inferred from the claim text.