Catalyst for ester production and process for producing ester
AssigneeChisso Corporation
InventorsKanichiro Inui, Takayoshi Takahashi, Toru Kurabayashi
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Abstract
A catalyst for ester production which comprises zirconium oxide, copper, and at least one oxide selected from the group consisting of zinc oxide, chromium oxide, aluminum oxide and silicon oxide, and is obtainable by reducing with hydrogen a catalyst precursor prepared by the reaction of a salt containing at least one of metals constituting the oxides, a zirconium salt and a copper salt with an alkali hydroxide; and a process for producing an ester which comprises bringing either an alcohol or an alcohol and an aldehyde into contact with this catalyst in a gas phase.
Claims17
1-18. (canceled)
A Cu—ZnO—ZrO2 catalyst for ester production, which consists of:
- per mole of copper, not more than 5 moles of zinc oxide, and 0.05-5 moles of zirconium oxide, the catalyst being obtainable by reducing with hydrogen, a calcined form of a precipitate prepared by the reaction of a copper salt, a zinc salt, and a zirconium salt with an alkali hydroxide.
A Cu—Al2O3—ZrO2 catalyst for ester production, which consists of:
- per mole of copper, not more than 5 moles of aluminum oxide, and 0.05-5 moles of zirconium oxide, the catalyst being obtainable by reducing with hydrogen, a calcined form of a precipitate prepared by the reaction of a copper salt, an aluminum salt, and a zirconium salt with an alkali hydroxide.
A process for preparing a Cu—ZnO—ZrO2 catalyst for ester production, which comprises:
- reducing with hydrogen a calcined form of a precipitate prepared from a mixed aqueous solution of copper nitrate, zinc nitrate, and zirconyl nitrate, and an alkali hydroxide, the catalyst comprising, per mole of copper, not more than 5 moles of zinc oxide and 0.05-5 moles of zirconium oxide.
A process for preparing a Cu—Al2O3—ZrO2 catalyst for ester production, which comprises:
- reducing with hydrogen a calcined form of a precipitate prepared from a mixed aqueous solution of copper nitrate, zinc nitrate, and zirconyl nitrate, and an alkali hydroxide, the catalyst comprising, per mole of copper, not more than 5 moles of aluminum oxide and 0.05-5 moles of zirconium oxide.
Dependencies are inferred from the claim text.