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Electrochemical reforming of oxygenate mixtures

a technology of oxygenate mixture and electrochemical reforming, which is applied in the direction of electrodes, electrolysis processes, electrolysis components, etc., can solve the problem of adding to the cosub>2 /sub>footprint of the process

Inactive Publication Date: 2014-04-24
PHILLIPS 66 CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

The patent describes a process for producing hydrogen using electrolysis on an alkaline oxygenate mixture. The process does not produce significant amounts of oxygen or carbon dioxide. The electrolysis is performed at temperatures greater than 150°C and pressures greater than 200 psig with a platinum or platinum alloy blend anode and cathode. The current density during electrolysis is greater than 15 mA / cm2. The technical effect of this process is the efficient and safe production of hydrogen without the formation of oxygen or carbon dioxide.

Problems solved by technology

However, electrolysis requires electrical power, which either means significant CO2 emission from coal-based power, or reliance on the development of economical sources of low-carbon power.
However, manufacture of transportation fuel from biomass requires H2.
While steam-reforming of natural gas call provide the required H2, but it adds to the CO2 footprint of the process.

Method used

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  • Electrochemical reforming of oxygenate mixtures
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  • Electrochemical reforming of oxygenate mixtures

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examples

Corn Fiber Oxygenate as Feed

[0042]Electrochemical tests were performed using samples of aqueous oxygenate stream of a corn fiber upgrading process. Ammonium hydroxide was added in a 0.5 M concentration as an alkaline electrolyte. Twin platinum plates were used as electrodes and held at a distance of 2 centimeters apart. Cyclic voltammograms were performed that show an enhanced onset of hydrogen evolution, resulting in a 17% reduction in the applied voltage when compared to pure water electrolysis. The cyclic voltammogram showing this difference is depicted in FIG. 3. Using an applied voltage of 1.5 volts between the two electrodes, a 35% increase yield. in H2 production was also observed.

[0043]Although not specific to the corn fiber feed, the electrolysis process also has an additional benefit by removing alcohols, such as methanol, from biomass derived streams before they reach the treatment facility. Typically, microbes are used at treatment facilities to digest the organic conten...

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Abstract

The process describes performing electrolysis on an alkaline oxygenate mixture to produce hydrogen. In this process the electrolysis does not form any significant amounts of oxygen.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a non-provisional application which claims the benefit of and priority to U.S. Provisional Application Ser. No. 61 / 715,971 filed Oct. 19, 2012, entitled “Electrochemical Reforming of Oxygenate Mixtures”, which is hereby incorporated by reference in its entirety.STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT[0002]None.FIELD OF THE INVENTION[0003]This invention relates to electrochemical reforming of oxygenate mixtures.BACKGROUND OF THE INVENTION[0004]Hydrogen is currently produced by steam-reforming of natural gas. This process although economical, produces CO2 as a by-product. With increasing demand for hydrogen in refineries, and the possibility of future carbon dioxide legislation, it is of interest to consider cost-effective alternative means of H2 production. The electrochemical splitting of water into H2 and O2 gas is one known method. However, electrolysis requires electrical power, which either ...

Claims

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Application Information

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IPC IPC(8): C25B11/04C25B1/02
CPCC25B1/02C25B11/0415C25B11/057C25B11/081
Inventor KAR, MAHAPRASADPANSARE, SOURABHGORKE, JOHN T.LOTERO, EDGARMCDANIEL, NEAL D.SMITH, DANIELLE K.SCHULTZ, DENNIS G.FJARE, KRISTI A.RANDOLPH, BRUCE B.PATNAIK, SIKTAPAUL, UCHENNA P.ANAND, MADHU
Owner PHILLIPS 66 CO