Efficient and selective chemical recycling of carbon dioxide to methanol, dimethyl ether and derived products
First Claim
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1. An environmentally beneficial method of preparing a renewable fuel, which method comprises:
- obtaining carbon dioxide from a natural or chemical source that would otherwise be present in or discharged into the atmosphere; and
producing an energy storage and transportation material or a fuel sufficient to generate energy by hydrogenatively converting the carbon dioxide thus obtained under conditions sufficient to produce methanol as the material or fuel.
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Abstract
An efficient and environmentally beneficial method of recycling and producing methanol from varied sources of carbon dioxide including flue gases of fossil fuel burning powerplants, industrial exhaust gases or the atmosphere itself. Converting carbon dioxide by chemical or electrochemical reduction seconardy treatment to produce essentially methanol, dimethyl ether and derived products.
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Citations
20 Claims
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1. An environmentally beneficial method of preparing a renewable fuel, which method comprises:
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obtaining carbon dioxide from a natural or chemical source that would otherwise be present in or discharged into the atmosphere; and producing an energy storage and transportation material or a fuel sufficient to generate energy by hydrogenatively converting the carbon dioxide thus obtained under conditions sufficient to produce methanol as the material or fuel. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. An environmentally beneficial method of preparing a renewable fuel, which method comprises:
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obtaining carbon dioxide from a natural or chemical source; and producing an energy storage and transportation material or a fuel sufficient to generate energy by hydrogenatively converting the carbon dioxide thus obtained under conditions sufficient to produce methanol as the material or fuel. - View Dependent Claims (16, 17, 18, 19)
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20. An environmentally beneficial method of reducing the carbon dioxide content of the atmosphere by recycling carbon dioxide and producing methanol using a reductive conversion of an available source of carbon dioxide from a natural or chemical source, which method comprises:
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(A) reducing the carbon dioxide under conditions sufficient to produce a reaction mixture containing formic acid with concomittant formation of formaldehyde and small amounts of methanol and methane, followed, without separation of the reaction mixture, by a treatment step conducted under conditions sufficient to convert the formaldehyde to formic acid and methanol;
or(B) augmenting the reaction mixture of (A) by reacting the formaldehyde with some of the formic acid as a hydrogen source, without separation of the reaction mixture, into methanol, and by reacting some of the formic acid with methanol to form methyl formate, followed by catalytically hydrogenating the methyl formate under conditions sufficient to form methanol;
or(C) generating carbon monoxide from the carbon dioxide through a high temperature reaction with carbon, reacting the carbon monoxide with methanol produced in (A) under conditions sufficient to form methyl formate, followed by catalytic hydrogenation of the methyl formate under conditions sufficient to form methanol.
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Specification