| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 205440000 | Carboxylic acid or derivative produced | 26 |
| 20090078581 | Configurations and Methods of Reduction of Lipoic Acid - Lipoic acid is electrochemically reduced to dihydrolipoic acid, preferably in a continuous manner and in a flow-through cell using a cathode that allows a two-electron transfer reaction in highly alkaline medium. In most preferred aspects, the reduced product is continuously removed by a membrane with preferential permeability for dihydrolipoic acid, and the cathode material is carbon felt. | 03-26-2009 |
| 20120024716 | DEVICE AND METHOD FOR REDUCING CARBON DIOXIDE - A device for reducing carbon dioxide includes a vessel for holding an electrolyte solution including carbon dioxide, a working electrode and a counter electrode. The working electrode contains metal hexaboride particles. | 02-02-2012 |
| 20120031769 | METHOD AND DEVICE FOR CARBOXYLIC ACID PRODUCTION - A method for producing and recovering a carboxylic acid in an electrolysis cell. The electrolysis cell is a multi-compartment electrolysis cell. The multi-compartment electrolysis cell includes an anodic compartment, a cathodic compartment, and a solid alkali ion transporting membrane (such as a NaSICON membrane). An anolyte is added to the anodic compartment. The anolyte comprises an alkali salt of a carboxylic acid, a first solvent, and a second solvent. The alkali salt of the carboxylic acid is partitioned into the first solvent. The anolyte is then electrolyzed to produce a carboxylic acid, wherein the produced carboxylic acid is partitioned into the second solvent. The second solvent may then be separated from the first solvent and the produced carboxylic acid may be recovered from the second solvent. The first solvent may be water and the second solvent may be an organic solvent. | 02-09-2012 |
| 20120031770 | METHOD FOR REDUCING CARBON DIOXIDE - The method for reducing carbon dioxide of the present invention includes a step (a) and a step (b) as follows. A step (a) of preparing an electrochemical cell. The electrochemical cell comprises a working electrode ( | 02-09-2012 |
| 20120228147 | SYSTEM AND PROCESS FOR MAKING FORMIC ACID - Methods and systems for electrochemical production of formic acid are disclosed. A method may include, but is not limited to, steps (A) to (D). Step (A) may introduce water to a first compartment of an electrochemical cell. The first compartment may include an anode. Step (B) may introduce carbon dioxide to a second compartment of the electrochemical cell. The second compartment may include a solution of an electrolyte and a cathode. The cathode is selected from the group consisting of indium, lead, tin, cadmium, and bismuth. The second compartment may include a pH of between approximately 4 and 7. Step (C) may apply an electrical potential between the anode and the cathode in the electrochemical cell sufficient to reduce the carbon dioxide to formic acid. Step (D) may maintain a concentration of formic acid in the second compartment at or below approximately 500 ppm. | 09-13-2012 |
| 20120292199 | METHOD FOR REDUCING CARBON DIOXIDE - The method for reducing carbon dioxide of the present disclosure includes a step (a) and a step (b) as follows. A step (a) of preparing an electrochemical cell. The electrochemical cell comprises a working electrode, a counter electrode and a vessel. The vessel stores an electrolytic solution. The working electrode contains at least one carbide selected from the group consisting of zirconium carbide, hafnium carbide, niobium carbide, chromium carbide and tungsten carbide. The electrolytic solution contains carbon dioxide. The working electrode and the counter electrode are in contact with the electrolytic solution. A step (b) of applying a negative voltage and a positive voltage to the working electrode and the counter electrode, respectively, to reduce the carbon dioxide. | 11-22-2012 |
| 20130186771 | Method and Apparatus for the Electrochemical Reduction of Carbon Dioxide - A method and apparatus is provided for the electrochemical reduction of carbon dioxide to formate and formic acid. One embodiment features a three-compartment reactor which houses: a gas compartment; a catholyte compartment, which contains a porous cathode having a tin-based catalyst; and an anolyte compartment, which contains an anode having a mixed metal oxide catalyst. Further embodiments include a method for depositing tin onto a porous cathode, tin zinc cathodes, a reaction method using an acidic anolyte, and pulsed polarization to extend reactor runtimes. | 07-25-2013 |
| 20130284607 | METHOD OF PRODUCING COUPLED RADICAL PRODUCTS - A method that produces coupled radical products from biomass. The method involves obtaining a lipid or carboxylic acid material from the biomass. This material may be a carboxylic acid, an ester of a carboxylic acid, a triglyceride of a carboxylic acid, or a metal salt of a carboxylic acid, or any other fatty acid derivative. This lipid material or carboxylic acid material is converted into an alkali metal salt. The alkali metal salt is then used in an anolyte as part of an electrolytic cell. The electrolytic cell may include an alkali ion conducting membrane (such as a NaSICON membrane). When the cell is operated, the alkali metal salt of the carboxylic acid decarboxylates and forms radicals. Such radicals are then bonded to other radicals, thereby producing a coupled radical product such as a hydrocarbon. The produced hydrocarbon may be, for example, saturated, unsaturated, branched, or unbranched, depending upon the starting material. | 10-31-2013 |
| 20130306488 | METHOD FOR REDUCING CARBON DIOXIDE - A method for reducing carbon dioxide with use of a device for reducing carbon dioxide includes steps of (a) preparing the device. The device includes a vessel, a cathode electrode and an anode electrode. An electrolytic solution is stored in the vessel, the cathode electrode contains a copper rubeanate metal organic framework, the copper rubeanate metal organic framework is in contact with the electrolytic solution, the anode electrode is in contact with the electrolytic solution, and the electrolytic solution contains carbon dioxide. The method further includes step of (b) applying a voltage difference between the cathode electrode and the anode electrode so as to reduce the carbon dioxide. | 11-21-2013 |
| 20140021059 | System and Process for Making Formic Acid - Methods and systems for electrochemical production of formic acid are disclosed. A method may include, but is not limited to, steps (A) to (D). Step (A) may introduce water to a first compartment of an electrochemical cell. The first compartment may include an anode. Step (B) may introduce carbon dioxide to a second compartment of the electrochemical cell. The second compartment may include a solution of an electrolyte and a cathode. The cathode is selected from the group consisting of indium, lead, tin, cadmium, and bismuth. The second compartment may include a pH of between approximately 4 and 7. Step (C) may apply an electrical potential between the anode and the cathode in the electrochemical cell sufficient to reduce the carbon dioxide to formic acid. Step (D) may maintain a concentration of formic acid in the second compartment at or below approximately 500 ppm. | 01-23-2014 |
| 20140027303 | Reduction of Carbon Dioxide to Carboxylic Acids, Glycols, and Carboxylates - Methods and systems for electrochemical conversion of carbon dioxide to carboxylic acids, glycols, and carboxylates are disclosed. A method may include, but is not limited to, steps (A) to (D). Step (A) may introduce water to a first compartment of an electrochemical cell. The first compartment may include an anode. Step (B) may introduce carbon dioxide to a second compartment of the electrochemical cell. The second compartment may include a solution of an electrolyte and a cathode. Step (C) may apply an electrical potential between the anode and the cathode in the electrochemical cell sufficient to reduce the carbon dioxide to a carboxylic acid intermediate. Step (D) may contact the carboxylic acid intermediate with hydrogen to produce a reaction product. | 01-30-2014 |
| 20140131217 | ELECTROCHEMICAL REACTOR AND PROCESS - The electrochemical reactors disclosed herein provide novel oxidation and reduction chemistries and employ increased mass transport rates of materials to and from the surfaces of electrodes therein. | 05-15-2014 |
| 20140299482 | CONTINUOUS CO-CURRENT ELECTROCHEMICAL REDUCTION OF CARBON DIOXIDE - In various embodiments, the invention provides electro-chemical processes for reduction of carbon dioxide, for example converting carbon dioxide to format salts or formic acid. In selected embodiments, operation of a continuous reactor with a three dimensional cathode and a two-phase (gas/liquid) catholyte flow provides advantages conditions for electro-reduction of carbon dioxide. In these embodiments, the continuous two-phase flow of catholyte solvent and carbon dioxide containing gas, in selected gas/liquid phase volume flow ratios, provides dynamic conditions that favour the electro-reduction of COs at relatively high effective superficial current densities and gas space velocities, with relatively low reactor (cell) voltages (<10 volts). In some embodiments, relatively high internal gas hold-up in the cathode chamber (evident in an internal gas to liquid phase volume ratio >0.1) may provide greater than equilibrium CO | 10-09-2014 |
| 20140367274 | Electrochemical Reduction of CO2 with Co-Oxidation of an Alcohol - The present disclosure is a system and method for producing a first product from a first region of an electrochemical cell having a cathode and a second product from a second region of the electrochemical cell having an anode. The method may include the step of contacting the first region of the electrochemical cell with a catholyte comprising an alcohol and carbon dioxide. Another step of the method may include contacting the second region of the electrochemical cell with an anolyte comprising the alcohol. Further, the method may include a step of applying an electrical potential between the anode and the cathode sufficient to produce a first product recoverable from the first region and a second product recoverable from the second region. | 12-18-2014 |
| 20150047986 | ELECTROCHEMICAL REDUCTION METHOD OF CARBON DIOXIDE USING SOLUTION CONTAINING POTASSIUM SULFATE - The embodiments described herein pertain generally to an electrochemical reduction method of carbon dioxide under a solution condition containing potassium sulfate. | 02-19-2015 |
| 20160032470 | AMALGAM ELECTRODE, PRODUCING METHOD THEREOF, AND METHOD OF ELECTROCHEMICAL REDUCTION OF CARBON DIOXIDE USING THE SAME - The embodiments described herein pertain generally to an amalgam electrode, and a producing method of the amalgam electrode, and an electrochemical reduction method of carbon dioxide using the amalgam electrode. | 02-04-2016 |
| 20160097133 | Method of exfoliating and functionalizing graphite anode - A. providing an electrochemical cell with a first graphitic electrode and a second conductive electrode, wherein the first graphitic electrode is made of any one of HOPG, natural graphite, and synthetic graphite, the first graphitic electrode is held at a most positive potential, and the second conductive electrode is conductive, wherein a current passes through the electrochemical cell; B. providing an electrolyte of a solvent in the electrochemical cell, wherein the electrolyte has specific oxygen containing salts and base. Thereby, the graphitic electrode is functionalized and exfoliated by applying a voltage between the two electrodes thus producing graphene oxide. | 04-07-2016 |
| 20180023202 | Electrolysis System for Carbon Dioxide | 01-25-2018 |
| 205441000 | Carboxylic acid ester produced | 4 |
| 20130180865 | Reducing Carbon Dioxide to Products - A method reducing carbon dioxide to one or more organic products may include steps (A) to (C). Step (A) may introduce an anolyte to a first compartment of an electrochemical cell, said first compartment including an anode. Step (B) may introduce a catholyte and carbon dioxide to a second compartment of said electrochemical cell. The second compartment may include a tin cathode and a catalyst. The catalyst may include at least one of pyridine, 2-picoline or 2,6-lutidine. Step (C) may apply an electrical potential between said anode and said cathode sufficient for said cathode to reduce said carbon dioxide to at least one of formate or formic acid. | 07-18-2013 |
| 20140251822 | PRODUCTION OF VALUABLE CHEMICALS BY ELECTROREDUCTION OF CARBON DIOXIDE IN A NASICON CELL - A NaSICON cell is used to convert carbon dioxide into a usable, valuable product. In general, this reaction occurs at the cathode where electrons are used to reduce the carbon dioxide, in the presence of water and/or hydrogen gas, to form formate, methane, ethylene, other hydrocarbons and/or other chemicals. The particular chemical that is formed depends upon the reaction conditions, the voltage applied, etc. | 09-11-2014 |
| 20150354070 | Electrochemical Process and Apparatus Therefor - A process and apparatus are provided for the electrochemical reduction of carbon dioxide to formate. According one embodiment, an electrochemical process includes the catalytic electro-chemical reduction of carbon dioxide to formate utilizing a cathodic catalyst comprising tin and zinc, the zinc comprising between three and six weight percent of the catalyst. In a further embodiment, an electrochemical reactor for the electrochemical reduction of carbon dioxide to formate comprises a cathodic catalyst comprising tin and zinc, the zinc comprising between three and six weight percent of the catalyst. | 12-10-2015 |
| 20170233875 | ELECTROLYTIC PROCESS FOR PREPARATION OF METAL CARBOXYLATE COMPLEXES | 08-17-2017 |
| 205443000 | Carbonyl or hydroxy group containing other than as part of the carboxylic acid or derivative | 4 |
| 20090090639 | Electrochemical reduction of halogenated 4-aminopicolinic acids - The selective electrochemical reduction of halogenated 4-aminopicolinic acids is improved by activating the cathode in the presence of the starting material, excess alkali metal hydroxide and an alkali metal chloride, bromide or sulfate. | 04-09-2009 |
| 20100236937 | Electrode - An electrode substrate comprising M | 09-23-2010 |
| 20120085658 | ELECTROCHEMICAL SYSTEMS AND METHODS FOR OPERATING AN ELECTROCHEMICAL CELL WITH AN ACIDIC ANOLYTE - An electrochemical cell having a cation-conductive ceramic membrane and an acidic anolyte. Generally, the cell includes a catholyte compartment and an anolyte compartment that are separated by a cation-conductive membrane. While the catholyte compartment houses a primary cathode, the anolyte compartment houses an anode and a secondary cathode. In some cases, a current is passed through the electrodes to cause the secondary cathode to evolve hydrogen gas. In other cases, a current is passed between the electrodes to cause the secondary cathode to evolve hydroxyl ions and hydrogen gas. In still other cases, hydrogen peroxide is channeled between the secondary cathode and the membrane to form hydroxyl ions. In yet other cases, the cell includes a diffusion membrane disposed between the secondary cathode and the anode. In each of the aforementioned cases, the cell functions to maintain the pH of a fluid contacting the membrane at an acceptably high level. | 04-12-2012 |
| 20130140187 | Electrochemical Reduction of CO2 with Co-Oxidation of an Alcohol - The present disclosure is a system and method for producing a first product from a first region of an electrochemical cell having a cathode and a second product from a second region of the electrochemical cell having an anode. The method may include the step of contacting the first region of the electrochemical cell with a catholyte comprising an alcohol and carbon dioxide. Another step of the method may include contacting the second region of the electrochemical cell with an anolyte comprising the alcohol. Further, the method may include a step of applying an electrical potential between the anode and the cathode sufficient to produce a first product recoverable from the first region and a second product recoverable from the second region. | 06-06-2013 |
