Metal oxide catalyst systems for conversion of ethanol to butadiene
AssigneeFina Technology, Inc.
InventorsSivadinarayana Chinta, Kaushik Gandhi
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Abstract
A process includes reacting a feed stream containing ethanol and optionally acetaldehyde in a dehydration reactor in the presence of a dehydration catalyst system having a Group 4 or Group 5 metal oxide and a support. The process includes obtaining a product stream containing butadiene from the dehydration reactor. Another process includes reacting a feed stream containing ethanol and optionally acetaldehyde in a dehydration reactor in the presence of a dehydration catalyst system containing a tungsten oxide supported on a zeolite or a tantalum oxide supported on a zeolite. The process includes obtaining a product stream containing butadiene from the dehydration reactor.
Claims11
A process comprising:
- reacting a feed stream comprising ethanol in a dehydration reactor in the presence of a dehydration catalyst system comprising NbO—ReO supported on Na—X-zeolite, NbO—ReO supported on K—X-zeolite, or Ta2O5 supported on Na—X-zeolite;
- obtaining a product stream comprising butadiene from the dehydration reactor, wherein the process has a selectivity of butadiene of between 15 and 20 mole percent, a process yield of butadiene of 1 to 4 mole percent, an acetaldehyde efficiency of 10 to 50 mole percent, or an acetaldehyde conversion of from 35 to 75 percent;
- and
- regenerating the dehydration catalyst system in-situ in the presence of hydrogen at between 300 and 600° C.
Dependencies are inferred from the claim text.