Dehydrogenation Catalyst For Alkyl Aromatic Compounds Exhibiting High Performance In The Presence Of High-Concentration CO2
AssigneeSued-Chemie Catalysts Japan, Inc.
InventorsYuji Mishima, Shinya Hirahara, Nobuaki Kodakari
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Abstract
A dehydrogenation catalyst composition for use in preparing an alkenyl aromatic compound by dehydrogenation of an alkyl aromatic compound, a method for preparing the catalyst, and a process for using the catalyst in a dehydrogenation reaction. Carbon dioxide (CO2) is present in the reaction in a molar ratio of 0.015 to 0.20 based on an aromatic compound in a material gas. The catalyst further includes an iron compound, an alkali metal, and about 13 to about 60 wt % of a rare earth element calculated as an oxide.
Claims20
A dehydrogenation catalyst composition for use in preparing an alkenyl aromatic compound by dehydrogenation of an alkyl aromatic compound, said catalyst comprising steam, carbon dioxide, wherein the carbon dioxide is present in a molar ratio from about 0.015 to about 0.20 based on all aromatic molecules in the reaction, from about 30 to about 86 wt % of an iron compound calculated as Fe2O3, from about 1 to about 50 wt % of an alkali metal calculated as an alkali metal oxide, and about 13 to about 60 wt % of a rare earth element calculated as an oxide, wherein all weight percents are based on the total weight of the catalyst.
Dependencies are inferred from the claim text.