Dehydration catalyst for making ethylenimine
AssigneeThe Dow Chemical Company
InventorsDavid L. Childress, William V. Hayes
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Abstract
A dehydration catalyst containing tungsten oxide on a low surface area support and having a silica coating thereon. The catalyst has increased life and is useful for the dehydration of alkanolamines in making alkylenimines, e.g. ethanolamine is dehydrated to ethylenimine.
Claims5
The process of preparing a tungsten catalyst suitable for dehydrating an alkanolamine in the vapor phase to produce an alkylenimine by applying a soluble salt of tungsten from a solution thereof to a low surface area support, calcining said salt to tungsten oxide and thereafter applying silica to the catalyst as a promoter thereby improving the life of said tungsten catalyst.
Dependencies are inferred from the claim text.