N-methylated amines from selective vapor phase amination of amino ether alcohols
AssigneeAir Products and Chemicals, Inc.
InventorsJohn Mitchell, Richard Underwood, Michael Ford, Gamini Vedage, Hong-Xin Li
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Abstract
A method for converting amino ether alcohols to amino ether amines by amination in the vapor phase with a catalyst comprising copper and zinc. The catalyst may also comprise an alkali, alkaline earth, or lanthanide element as a promoter.
Claims23
A method for converting an amino ether alcohol to an amino ether amine, the method comprising contacting a catalyst comprising at least one of zinc oxide and a zinc salt, and at least one of copper oxide and a copper salt, with a vapor phase mixture comprising the amino ether alcohol and an amine.
A method for converting dimethylaminoethoxyethanol to an amino ether amine, the method comprising:
- contacting a catalyst with hydrogen gas to produce an activated catalyst;
- and
- contacting the activated catalyst with a vapor phase mixture comprising dimethylaminoethoxyethanol and at least one of methylamine and dimethylamine;
- wherein the catalyst comprises the following materials in the following amounts, based on total catalyst weight:
- 20 to 70 wt % copper oxide,
- 20 to 65 wt % zinc oxide, and
- 0.3 to 1.5 wt % of at least one of potassium and cesium.
Dependencies are inferred from the claim text.