Auto-oxidation production of hydrogen peroxide via hydrogenation in a microreactor
AssigneeFMC Corporation
InventorsDalbir S. Sethi, Emmanuel A. Dada, Kevin Hammack, Xinliang Zhou
Life of this patent
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Abstract
Hydrogen peroxide is prepared by an auto-oxidation method via hydrogenation in a microreactor. A working solution containing a reactive carrier compound is hydrogenated with hydrogen in a microreactor and is subsequently auto-oxidized to produce hydrogen peroxide.
Claims20
An auto-oxidation method for the production of hydrogen peroxide comprising effecting hydrogenation of a working compound in a microreactor containing a hydrogenation catalyst on a catalyst support within at least a portion of at least one microchannel in the microreactor, the microreactor being constructed of a material selected from the group consisting of metals, polymers, polymer composites, and combinations of these, and, further, the catalyst support being a support medium contained within a microreactor microchannel or being a removable wall surface portion on which the catalyst is coated or otherwise carried.
A cyclic method for the production of hydrogen peroxide comprising hydrogenating a working compound in a microreactor containing a hydrogenation catalyst on a catalyst support within at least a portion of at least one microchannel in the microreactor, oxidizing the hydrogenated working compound to produce hydrogen peroxide, recovering the hydrogen peroxide and recycling the oxidized working compound, the microreactor being constructed of a material selected from the group consisting of metals, polymers, polymer composites, and combinations of these, and, further, the catalyst support being a support medium contained within a microreactor microchannel or being a removable wall surface portion on which the catalyst is coated or otherwise carried.
A cyclic method for the production of hydrogen peroxide comprising the steps of catalytically hydrogenating an anthraquinone working solution, comprising an anthraquinone derivative carried in an organic solvent, in a hydrogenation microreactor containing a transition metal hydrogenation catalyst on a catalyst support within at least a portion of at least one microchannel in the microreactor, to yield an a hydrogenated working solution;
- oxidizing the hydrogenated working solution with air or an oxygen-containing gas, to produce hydrogen peroxide;
- separating the hydrogen peroxide from the oxidized working solution via aqueous extraction and recovering an aqueous solution of hydrogen peroxide;
- and recycling the oxidized working solution to the hydrogenation step, the microreactor being constructed of a material selected from the group consisting of metals, polymers, polymer composites, and combinations of these, and, further, the catalyst support being a support medium contained within a microreactor microchannel or being a removable wall surface portion on which the catalyst is coated or otherwise carried.
Dependencies are inferred from the claim text.