Production of adipic acid and derivatives from carbohydrate-containing materials
First Claim
1. A process for preparing glucaric acid or derivative thereof, the process comprising:
- reacting glucose with oxygen in the presence of a heterogeneous oxidation catalyst comprising a metal selected from the group consisting of Pd, Pt, and a combination thereof to convert at least a portion of the glucose to glucaric acid or derivative thereof, wherein the pH of the reaction mixture is less than 7 and the weight ratio of glucose to Pd and/or Pt is no greater than about 200;
1 and wherein the reaction is conducted in the substantial absence of added base.
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Abstract
The present invention generally relates to processes for the chemocatalytic conversion of a glucose source to an adipic acid product. The present invention includes processes for the conversion of glucose to an adipic acid product via glucaric acid or derivatives thereof. The present invention also includes processes comprising catalytic oxidation of glucose to glucaric acid or derivative thereof and processes comprising the catalytic hydrodeoxygenation of glucaric acid or derivatives thereof to an adipic acid product. The present invention also includes products produced from adipic acid product and processes for the production thereof from such adipic acid product.
185 Citations
61 Claims
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1. A process for preparing glucaric acid or derivative thereof, the process comprising:
reacting glucose with oxygen in the presence of a heterogeneous oxidation catalyst comprising a metal selected from the group consisting of Pd, Pt, and a combination thereof to convert at least a portion of the glucose to glucaric acid or derivative thereof, wherein the pH of the reaction mixture is less than 7 and the weight ratio of glucose to Pd and/or Pt is no greater than about 200;
1 and wherein the reaction is conducted in the substantial absence of added base.- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A process for preparing glucaric acid or derivative thereof, the process comprising:
reacting glucose with oxygen in the presence of a heterogeneous oxidation catalyst comprising a metal selected from the group consisting of Pd, Pt, and a combination thereof to convert at least a portion of the glucose to glucaric acid or derivative thereof, wherein the reaction is conducted under a partial pressure of oxygen of at least about 25 psia (172 kPa), the pH of the reaction mixture is less than 7 and is maintained at a temperature of at least 60°
C., the glucaric acid yield is at least about 15%, and the weight ratio of glucose to Pd and/or Pt is no greater than about 200;
1.- View Dependent Claims (22, 23, 24, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57, 58, 59, 60, 61)
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25. A process for preparing an adipic acid product, the process comprising:
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a) reacting glucose with oxygen in the presence of a heterogeneous oxidation catalyst comprising a metal selected from the group consisting of Pd, Pt, and a combination thereof to convert at least a portion of the glucose to glucaric acid or derivative thereof, wherein the pH of the reaction mixture is less than 7, wherein the weight ratio of glucose to Pd and/or Pt is no greater than about 200;
1; andb) reacting, in the presence of a hydrodeoxygenation catalyst, a halogen source and hydrogen, at least a portion of the glucaric acid or derivative thereof, to convert at least a portion of the glucaric acid or derivative thereof to an adipic acid product. - View Dependent Claims (26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45)
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Specification