115 results about "Redox catalyst" patented technology

A F-type electrochemical cell, which is a lithium air battery, includes a positive electrode facing a negative electrode composed of metallic lithium with a separator provided therebetween in a casing. Air is capable of flow to the positive electrode. A nonaqueous electrolytic solution is charged into a space between the positive electrode and the negative electrode. At least one of the positive electrode and the nonaqueous electrolytic solution of the lithium air battery contains a compound having a stable radical skeleton. The compound also serves as a redox catalyst for oxygen.

A polymerized hydrogel composition for hydrating or dehydrating a surface, particularly a dermatological surface, to which it is applied and a method for forming the composition. The composition is comprised of a mixture of two polymerizable materials, a two-part redox catalyst system and a two-part polymerization medium. The percentage by weight of each element in the composition may be varied within stated percentage ranges and depending to the desired application. The rate at which hydration or dehydration occurs may be controllably altered by varying the percentages of certain of the composition elements and by adding either or both of a fibrous filler material and a humectant to the composition.

This invention relates generally to a ruthenium stabilized oxidation-reduction catalyst useful for oxidizing carbon monoxide, and volatile organic compounds, and reducing nitrogen oxide species in oxidizing environments, substantially without the formation of toxic and volatile ruthenium oxide species upon said oxidizing environment being at high temperatures.

The present invention provides both crosslinked polymer compositions capable of forming hydrogel upon exposure to an aqueous environment and thiosulfonate hydrogel-forming components. The thiosulfonate hydrogel-forming components of the invention are preferably multi-arm thiosulfonate polymer derivatives that form a crosslinked polymer composition when exposed to a base without requiring the presence of a second cross-linking reagent, redox catalyst, or radiation. Methods for forming hydrogel compositions, as well as methods for using the hydrogel, are also provided.

To provide a tandem dye-sensitized solar cell having a novel structure capable of improving the light absorption efficiency and being manufactured less expensively. A dye-sensitized solar cell 10 is configured by including, in order from the light incident side, an anode substrate 12, a first dye-carrying porous oxide semiconductor layer 14, a first electrolyte layer 16a, an electrolyte redox catalyst layer 18, a second dye-carrying porous oxide semiconductor layer 20, a porous support layer 19, a second electrolyte layer 16b, and a cathode substrate 22. The electrons extracted from a conductor layer 12b by a conductor are introduced into the cathode substrate 22, so that a battery circuit, for example, for a lighting power source is configured.

Provided are a manganese oxide nanowire, specifically, a manganese oxide nanowire having an aspect ratio of 20 or more, which can be widely used in various fields, including batteries, oxygen generators, and redox catalysts, a rechargeable battery including the manganese oxide nanowire, and a method of producing manganese oxide. Since the manganese oxide nanowire having a large aspect ratio has an increased specific surface area, it can be effectively used in various fields. In addition, various kinds of manganese oxide nanowires can be simply manufactured.

A fuel cell, which can supply stable output even at elevated temperatures and can maintain its power generation performance over a long period of time, can be realized by an electrode for a fuel cell comprising a catalyst layer formed of a catalyst composite and a binder, the catalyst composite comprising a proton-conductive inorganic oxide and an oxidation-reduction catalyst phase supported on the proton-conductive inorganic oxide, the proton-conductive inorganic oxide comprising a catalyst carrier selected from tin(Sn)-doped In2O3, fluorine(F)-doped SnO2, and antimony(Sb)-doped SnO2 and an oxide particle phase chemically bonded to the surface of the catalyst carrier. The catalyst composite is manufactured by dispersing a catalyst carrier in a solution containing a material as a starting material for an oxide particle phase, heat treating the dispersion to form a proton-conductive inorganic oxide, further dispersing the proton-conductive inorganic oxide in a catalyst precursor-containing solution, and subjecting the dispersion to heat treatment or pH adjustment to deposit a catalyst phase.

There is provided a tandem-type dye-sensitized solar cell having a novel structure whereby optical absorption efficiency is improved and which can be manufactured at low cost.A dye-sensitized solar cell 10 comprises an anode substrate 12, a first dye-carrying porous oxide semiconductor layer 14, an electrolytic solution layer 16a, a porous support layer 18, a second dye-carrying porous oxide semiconductor layer 20, an electrolytic solution layer 16b, and a cathode substrate 22, arranged in order from an optical incidence side. The porous support layer 18 supports an iodine redox catalyst layer 19. Electrons derived by a conductor from a conductor layer 12b are introduced to the cathode substrate 22, thereby configuring, for example, a battery circuit for lighting purposes.

A process for producing an aromatic carbonate by reacting an aromatic monohydroxy compound with carbon monoxide and molecular oxygen, whereinthe reaction is carried out in the presence of:(a) palladium or a palladium compound (component (a));(b) a redox catalyst (component (b));(c) a heteropoly-acid or salt thereof (component (c)); and(d) a quaternary ammonium salt or quaternary phosphonium salt (component (d)),and under dehydration conditions.According to the present invention, an aromatic carbonate can be produced from an aromatic monohydroxy compound by a simple process economically and efficiently.

A method for producing a wiring harness including a sealing member having higher airtightness includes a coat formation step of forming a coat by applying a composition solution that contains at least a photo polymerization initiator, a thermal radical polymerization initiator, a redox catalyst and a polymerizable compound to an exposed bunched portion and a coated bunched portion that is adjacent to the exposed bunched portion of the bunch of electric wires, and a light irradiation step of irradiating the coat formed on the exposed bunched portion and the adjacent coated bunched portion with light to photocure the coat.

The invention relates to a process for removing hydrogen sulfide and recovering sulfur from a gas stream, comprising the steps of: contacting said gas stream with an aqueous catalyst solution of a polyvalent metal redox catalyst in a contacting zone to absorb said hydrogen sulfide and form a reduced catalyst solution comprising reduced polyvalent metal redox catalyst and sulfur particles; oxidizing said reduced catalyst solution while removing sulfur particles to form said oxidized aqueous catalyst solution comprising polyvalent metal redox catalyst in an oxidized state with sulfur particles removed; and recovering sulfur by transferring at least one of said sulfur particles and foam to a separation zone; wherein a coagulating reagent is added to a feed of said separation zone prior to entering said separation zone to promote settlement of sulfur particles.

Disclosed is a modified polymer complex produced by the intermolecular and / or intramolecular crosslinking of a polymer complex via its side chains, wherein the polymer complex is a copolymer of a complex monomer meeting the requirements (i) to (iii) and a comonomer represented by the general formula (1): R02R03=R01E [wherein the definitions for R01, R02, R03 and E are omitted]. (i) The complex monomer has two or more transition metal atoms. (ii) The complex monomer has a polydentate ligand having three or more coordinating atoms that coordinately bind to the transition metal atoms. (iii) The polydentate ligand has one or more polymerizable functional groups.

The invention relates to a simple preparation method of Fe (ferrous), Co (cobalt) and N (nitrogen) three-element co-doping three-dimensional graphene with catalytic synergistic effect. The preparation method comprises the following steps of enabling soluble fully-aromatic PBI (polybenzimidazole) to react with a ferrous salt and cobalt salt mixing solution; firstly, preparing a complex of PBI, ferrous ions and cobalt ions; adding a nanometer template agent into the reaction mixing liquid; regularly arranging the complex at the surface of the template agent; pyrolyzing, removing a template, and the like, so as to prepare the Fe-Co-N three-element co-doping three-dimensional graphene. The PBI is selected from fully-aromatic macromolecules, such as ABPBI and mPBI, and the viscosity average molecular weigh is 20,000 to 40,000; the molar ratio of ferrous salt and cobalt salt is 1:2 to 2:1; the mass ratio of PBI and ferrous salt and cobalt salt mixture is 1:2 to 2:1; the template agent is selected from nanometer magnesium oxide, ferric oxide and ferric hydroxide nanoparticles; the particle size of the template agent is 5 to 50nm; the mass ratio of PBI and template agent is 3:1 to 1:3; the pyrolysis temperature is 700 to 1000 DEG C; the Fe-Co-N three-element co-doping three-dimensional graphene can be applied to the fields of redox reaction catalysts, fuel batteries, metal air battery redox catalysts, water electrolysis separation catalysts, supercapacitors and the like.