Production of glutaric acid and derivatives from carbohydrate-containing materials
AssigneeRennovia Inc.
InventorsThomas R. Boussie, Eric L. Dias, Zachary M. Fresco, Vincent J. Murphy
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Abstract
The present invention generally relates to processes for the chemocatalytic conversion of a pentose source to a glutaric acid product. The present invention includes processes for the conversion of pentose to a glutaric acid product via pentaric acid or derivatives thereof. The present invention also includes processes comprising the catalytic oxidation of pentose to pentaric acid and catalytic hydrodeoxygenation of pentaric acid or derivatives thereof to a glutaric acid product.
Claims36
A process for preparing a glutaric acid product, the process comprising:
- reacting, in the presence of a heterogeneous hydrodeoxygenation catalyst comprising at least one d-block metal selected from the group consisting of Co, Ni, Ru, Rh, Pd, Os, Ir, Pt, and combinations thereof at a surface of a support and a halogen source, a C5-backbone substrate and hydrogen to convert at least a portion of the C5-backbone substrate to a glutaric acid product, wherein the C5-backbone substrate comprises a compound of formula I
- wherein X is independently hydroxyl, oxo, halo, acyloxy or hydrogen provided that at least one X is not hydrogen and R1 is independently a salt-forming ion, hydrogen, hydrocarbyl, substituted hydrocarbyl, or lactone thereof and the glutaric acid product comprises a compound of formula II
- wherein R1 is as defined for formula I.
A process for preparing a glutaric acid product, the process comprising:
- a) converting at least a portion of a pentose source to a C5-backbone substrate comprising pentaric acid or derivative thereof, and
- b) converting, in the presence of a heterogeneous hydrodeoxygenation catalyst comprising at least one d-block metal selected from the group consisting of Co, Ni, Ru, Rh, Pd, Os, Ir, Pt, and combinations thereof at a surface of a support, at least a portion of the pentaric acid or derivative thereof to a glutaric acid product of formula II
- wherein R1 is independently a salt-forming ion, hydrogen, hydrocarbyl, substituted hydrocarbyl, or lactone thereof.
A process for preparing a glutaric acid product, the process comprising:
- a) reacting a pentose with oxygen, in the presence of a solvent, and an oxidation catalyst and in the absence of added base, to convert at least a portion of the pentose to at least one pentaric acid and/or derivative thereof, and
- b) reacting, in the presence of a heterogeneous hydrodeoxygenation catalyst comprising at least one d-block metal selected from the group consisting of Co, Ni, Ru, Rh, Pd, Os, Ir, Pt, and combinations thereof at a surface of a support and a halogen source, at least a portion of the at least one pentaric acid and/or derivative thereof and hydrogen, to convert at least a portion of the at least one pentaric acid and/or derivative thereof to a glutaric acid product of formula II
- wherein R1 is independently a salt-forming ion, hydrogen, hydrocarbyl, substituted hydrocarbyl, or lactone thereof.
A process for producing a glutaric acid product from a pentose, the process comprising:
- converting by heterogeneous chemocatalysis at least a portion of the pentose to the glutaric acid product in the presence of a heterogeneous hydrodeoxygenation catalyst comprising at least one d-block metal selected from the group consisting of Co, Ni, Ru, Rh, Pd, Os, Ir, Pt, and combinations thereof at a surface of a support, wherein the glutaric acid product is of formula II
- wherein R1 is independently a salt-forming ion, hydrogen, hydrocarbyl, substituted hydrocarbyl, or lactone thereof.
Dependencies are inferred from the claim text.