Process for Producing Ethanol With Zonal Catalysts
AssigneeCelanese International Corporation
InventorsHeiko Weiner, Zhenhua Zhou, Victor J. Johnson
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Abstract
A process is disclosed for producing ethanol comprising contacting reactants comprising acetic acid and hydrogen in a reactor in the presence of a first catalyst in a first zone and a second catalyst in a second zone. The first catalyst is a mixed oxide comprising tin and at least one of cobalt or nickel. The second catalyst may be either: i) a supported Group VIII hydrogenation catalyst; ii) a copper-based catalyst; and iii) a secondary mixed oxide catalyst, wherein the secondary mixed oxide catalyst is different than the mixed oxide catalyst of the first zone.
Claims20
A process for producing ethanol comprising contacting reactants comprising acetic acid and hydrogen in a reactor in the presence of a first catalyst in a first zone and a second catalyst in a second zone,
- wherein the first catalyst comprises a mixed oxide comprising tin and at least one of cobalt or nickel;
- and
- wherein the second catalyst is selected from the group consisting of:
- i) a supported Group VIII hydrogenation catalyst;
- ii) a copper-based catalyst;
- and
- iii) a secondary mixed oxide catalyst, wherein the secondary mixed oxide catalyst is different than the mixed oxide catalyst of the first zone.
Dependencies are inferred from the claim text.