Process and catalyst for dehydrogenation or dehydrocyclization of hydrocarbons
AssigneeLinde Aktiengesellschaft
InventorsHeinz Zimmermann, Frederik Versluis
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Abstract
Process and catalyst for dehydrogenation or dehydrocyclization of hydrocarbons. The catalyst consists of an aluminum oxide/chromium oxide support with promotors consisting of compounds of alkali metals and/or alkaline earth metals and compounds of metals from the third and/or fourth subgroups of the periodic table. Coke formation and side reactions can be substantially suppressed by the use of these catalysts under special operating conditions and special reactors.
Claims18
A catalyst comprising chromium and aluminum oxides, at least one cesium metal compound promoter in an amount of 0.1 to 10% by weight of the catalyst, calculated as Cs.sub.2 O, and at least one zirconium metal compound as an additional promoter in a amount of 0.1 to 15% by weight of the catalyst, calculated as ZrO.sub.2.
A catalyst consisting essentially of chromium and aluminum oxides, at least one cesium metal compound promoter in an amount of 0.1 to 10% by weight of the catalyst, calculated as Cs.sub.2 O, and at least one zirconium metal compound as an additional promoter in a amount of 0.1 to 15% by weight of the catalyst, calculated as ZrO.sub.2.
A process for the dehydrogenation or dehydrocyclization of hydrocarbons on a regenerable catalyst comprising:
- contacting said hydrocarbons with said regenerable catalyst under sufficient dehydrogenation or dehydrocyclization conditions, wherein said regenerable catalyst comprises a chromium oxide and an aluminum oxide with at least one catalyst promoting cesium metal compound in an amount of 0.1 to 10% by weight of the catalyst, calculated as Cs.sub.2 O, and at least one additional promoter comprising at least one zirconium metal compound in an amount of 0.1 to 15% by weight of the catalyst, calculated as ZrO.sub.2.
Dependencies are inferred from the claim text.