Novel Methods of Higher Alcohol Synthesis
First Claim
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1. A method of producing liquid fuel from synthesis gas, the method comprising reacting the gas at pressures between about 500 and about 3000 psi and temperatures between about 200°
- C. and about 400°
C. over a catalyst, wherein the catalyst is copper, zinc, and potassium on a substrate.
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Abstract
Systems, catalysts, and methods are provided for transforming carbon based material into synthetic mixed alcohol fuel.
101 Citations
24 Claims
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1. A method of producing liquid fuel from synthesis gas, the method comprising reacting the gas at pressures between about 500 and about 3000 psi and temperatures between about 200°
- C. and about 400°
C. over a catalyst, wherein the catalyst is copper, zinc, and potassium on a substrate. - View Dependent Claims (2, 3, 4, 6, 7, 8)
- C. and about 400°
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5. The method of claim 5, wherein the methanol component of the product is removed via distillation to increase the energy content of the remaining fuel.
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9. A method of producing butanol, the method comprising reacting methanol with ethanol, propanol, or mixtures thereof at pressures under 3000 psi and temperatures between about 200°
- C. and about 400°
C. using a catalyst, wherein the catalyst comprises copper on hydrotalcite.
- C. and about 400°
- 10. The method of claim 10, wherein the hydrotalcite is a strongly basic variety and has a MgO to Al2O3 ratio greater than 1:
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13. A method of producing a mixture of butanol, higher alcohols, and hydrocarbons from synthesis gas, the method comprising:
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(a) reacting the gas at pressures between about 500 and about 3000 psi and temperatures between about 200°
C. and about 400°
C. over a catalyst, wherein the catalyst comprises copper, zinc, and potassium on a substrate, to yield a mixture of alcohols and hydrocarbons comprising methanol, ethanol, propanol and butanol, as well as other alcohols and hydrocarbons; and(b) reacting the methanol with the ethanol and/or propanol to produce butanol at pressures under 3000 psi and temperatures between about 200°
C. and about 400°
C. using a catalyst comprising copper on hydrotalcite.
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- 15. The method of claim 15, wherein the hydrotalcite catalyst employed in step (b) is a basic variety and has a MgO to Al2O3 ratio greater than 1:
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18. A catalyst comprising copper, zinc, and potassium deposited on a substrate.
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20. A catalyst comprising copper on hydrotalcite, wherein the hydrotalcite is a strongly basic variety with a MgO to Al2O3 ratio greater than 1:
- 1.
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24. The catalyst of claim 24, wherein the catalyst is calcined in flowing air or a mixture of gases containing oxygen for about 2 to about 10 hours at a temperature between about 200°
- C. and about 1000°
C. - View Dependent Claims (19, 21, 22, 23)
- C. and about 1000°
Specification