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Process for the Production of Hydrocarbons for Fuels, Solvents, and Other Hydrocarbon Products

a technology for hydrocarbon products and hydrocarbon products, applied in the direction of hydrocarbon oil treatment products, fuels, organic chemistry, etc., to achieve the effects of reducing side reactions, improving anti-knock characteristics, and reducing the number of side reactions

Inactive Publication Date: 2014-02-13
UNIV OF LOUISVILLE RES FOUND INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes a process for producing linear, paraffinic hydrocarbons by decarboxylating carboxylic acids. These hydrocarbons can be used as fuels, chemicals, or starting materials for other products. The process involves using a reaction catalyst and a support material, and contacting the carboxylic acid with the catalyst over the support material, resulting in the decarboxylation reaction. The process is efficient and flexible, using renewable feedstocks such as plant oils or animal fats, which are cost-effective and environmentally friendly. The produced hydrocarbons have a high degree of purity and can be used in various applications.

Problems solved by technology

The fact that biomass raw materials are in relatively large supply increases the desirability of this approach.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

A Palladium Metal Catalyst Supported on a Basic Hydrotalcite Oxide Support

[0046]The surface area of the support was approximately 99.5 m2 per gram; the pore volume of the support was approximately 0.3 ml per gram of catalyst. The support was dried overnight at 150° C. The average pore width of the catalyst was approximately 9.5 nm (nanometers); basicity of the catalyst, as determined by titration with 0.1 normal acetic acid, was approximately 0.15 mEq (milliequivalent) acetic acid per gram.

[0047]An aqueous solution of palladium nitrate containing a sufficient amount of palladium metal for 5 wt % of palladium in the final catalyst was prepared. A suspension of the hydrotalcite support in the palladium nitrate solution was prepared. A 0.1 normal aqueous solution of sodium hydroxide, of volume at least equal to the pore volume of the catalyst, was added to that suspension. The palladium compound was reduced to the metallic state by addition of a sufficient amount of sodium borohydride....

example 2

A Palladium Metal Catalyst Supported on a Non-Basic Support Material, i.e., Activated Carbon

[0050]The surface area of the support was approximately 778 m2 per gram; the pore volume of the support was approximately 0.45 ml per gram of catalyst. The support was dried overnight at 150° C. The average pore width of the catalyst was approximately 3.3 nm; basicity of the catalyst, as determined by titration with 0.1 normal acetic acid, was approximately 0.02 mEq acetic acid per gram.

[0051]An aqueous solution of palladium chloride containing a sufficient amount of palladium metal for 5 wt % of palladium in the final catalyst was prepared and deposited on the carbon by incipient deposition. The catalyst was dried in a flow of nitrogen at 200° C. for 5 hours. The dried catalyst was loaded in a downflow, fixed bed reactor and reduced in flowing hydrogen at 250° C., 20 bar pressure for 6 hours. A feedstock consisting of a mixture of oleic acid and normal hexadecane in equal weight proportions ...

example 3

A Palladium Metal Catalyst Supported on a Basic Hydrotalcite Oxide Support; Reaction not Carried out Under Hydrogen Pressure

[0053]Process conditions were the same as for Example 1, except that the reaction was not carried out under hydrogen; the pressure within the reactor remained at 20 bar of nitrogen throughout the reaction. The gaseous product of the reaction was carbon dioxide.

[0054]The hydrocarbon layer contained penta-, hexa-, hepta- and octa decanes. The iodine number of these products was negligible, indicating that the product contained only saturated paraffinic hydrocarbons. The conversion of the oleic acid to hydrocarbon products was 94 wt % at the end of 50 hours. From the ratio of heptadecane to (heptadecane+octadecane), the selectivity for decarboxylation was calculated to be 93%.

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Abstract

Catalytic processes for converting carboxylic acids obtained from biomass and other natural or industrial sources into paraffinic or olefinic hydrocarbons through decarboxylation, along with products formed from such hydrocarbons, in which the carbon chain length, the ratio of carbon-14 to carbon-12, and the ratio of odd number to even number of carbons in the chain are among factors which are indicative or otherwise useful for the detection of hydrocarbons formed by undergoing the claimed processes.

Description

CROSS REFERENCE TO RELATED US APPLICATION[0001]This application claims priority to U.S. Provisional Application No. 61 / 681,141 filed on Aug. 8, 2012.FIELD OF INVENTION[0002]The invention relates to the conversion of carboxylic acids obtained from biomass and other natural or industrial sources into paraffinic and olefinic hydrocarbons suitable for use as other hydrocarbon products, including but not limited to fuels, solvents, and other derivatives and products.BACKGROUND[0003]Hydrocarbons are an energy source for internal combustion engines, for turbines in jet aircraft, and for other kinds of engines, as well as for other applications that require a source of fuel. Some hydrocarbon fuels, such as diesel fuels, are linear, paraffinic hydrocarbons. Some hydrocarbon products, such as, for example, kerosene, some jet fuels, and some solvents, have branched-chain hydrocarbons and number 10-to-15 carbon atoms in their molecular structure. By comparison, diesel fuels are typically straig...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): C10G3/00
CPCC10G3/47C10G45/58C10L1/04C10L1/06C10G3/44C10G3/45C10G3/46C10G3/48C10G3/49C10G2300/1011C10G2300/301C10G2400/02C10G2400/08Y02P30/20
Inventor RATNASAMY, PAULWAGLE, SANJAYDICOSOLA, GREGORY
Owner UNIV OF LOUISVILLE RES FOUND INC
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