Patent application number | Description | Published |
20130302715 | PROCESS FOR PRODUCING CATALYST CARRIER, PROCESS FOR PRODUCING COMPOSITE CATALYST, COMPOSITE CATALYST, AND FUEL CELL USING SAME - A catalyst carrier production process includes a step (a) of mixing a transition metal compound (1), a nitrogen-containing organic compound (2), and a solvent to provide a catalyst carrier precursor solution; a step (b) of removing the solvent from the catalyst carrier precursor solution; and a step (c) of thermally treating a solid residue obtained in the step (b) at a temperature of 500 to 1100° C. to provide a catalyst carrier; wherein the transition metal compound (1) is partly or wholly a compound including a transition metal element (M1) selected from the group 4 and 5 elements of the periodic table as a transition metal element; and at least one of the transition metal compound (1) and the nitrogen-containing organic compound (2) includes an oxygen atom. | 11-14-2013 |
20140120454 | FUEL CELL ELECTRODE CATALYST AND PRODUCTION PROCESS THEREOF - A fuel cell electrode catalyst which includes, at least, M1 that is at least one element selected from 3 to 7 group transition metal elements; M2 that is at least one element selected from iron group elements; M3 that is at least one element selected from 13 group elements; carbon; nitrogen; and oxygen, as constitutional elements, wherein when the atomic ratios of the elements (M1:M2:M3:carbon:nitrogen:oxygen) are represented by a:b:c:x:y:z, 0 | 05-01-2014 |
20140170527 | PROCESS FOR PRODUCING CATALYST FOR DIRECT-LIQUID FUEL CELL, CATALYST PRODUCED BY THE PROCESS AND USES THEREOF - In a direct-liquid fuel cell supplied directly with a liquid fuel, a process for producing an electrode catalyst for a direct-liquid fuel cell is provided which is capable of suppressing decrease in cathode potential caused by liquid fuel crossover and providing an inexpensive and high-performance electrode catalyst for a direct-liquid fuel cell. The process for producing an electrode catalyst for a direct-liquid fuel cell includes Step A of mixing at least a transition metal-containing compound with a nitrogen-containing organic compound to obtain a catalyst precursor composition, and Step C of heat-treating the catalyst precursor composition at a temperature of from 500 to 1100° C. to obtain an electrode catalyst, wherein part or entirety of the transition metal-containing compound includes, as a transition metal element, at least one transition metal element M1 selected from Group IV and Group V elements of the periodic table. | 06-19-2014 |
20140349212 | OXYGEN REDUCTION CATALYST AND METHOD FOR PRODUCING SAME - The present invention concerns an oxygen reduction catalyst comprising composite particles in which primary particles of a titanium compound is dispersed into a carbon structure, wherein the composite particles have titanium, carbon, nitrogen and oxygen as constituent elements, and with regard to a ratio of number of atoms of each of the elements when titanium is taken as 1, a ratio of carbon is larger than 2 and 5 or less, a ratio of nitrogen is larger than 0 and 1 or less, and a ratio of oxygen is 1 or more and 3 or less, and an intensity ratio (D/G ratio) of D band peak intensity to G band peak intensity in a Raman spectrum is in the range of 0.4 to 1.0. The oxygen reduction catalyst according to the present invention has satisfactory initial performance and excellent start-stop durability. | 11-27-2014 |