Provided is a photocatalyst layer that improves the photocatalytic performance while suppressing detachment of photocatalyst particles. The photocatalyst layer has a front surface and a rear surface on the opposite side of the front surface. The photocatalyst layer includes photocatalyst particles and a binder. The photocatalyst layer has a first region containing the photocatalyst particles and a second region containing the binder and not containing the photocatalyst particles. The photocatalyst particles include tungsten oxide particles. The photocatalyst particles have contact points being in contact with the rear surface. The ratio of the thickness of the second region to the number-average secondary particle diameter of the photocatalyst particles is 0.20 or more and 0.80 or less.

A catalyst support comprising at least 95% silicon carbide, having surface areas of ≤10 m.sup.2/g and pore volumes of ≤1 cc/g. A method of producing a catalyst support, the method including mixing SiC particles of 0.1-20 microns, SiO.sub.2 and carbonaceous materials to form an extrusion, under inert atmospheres, heating the extrusion at temperatures of greater than 1400° C., and removing residual carbon from the heated support under temperatures below 1000° C. A catalyst on a carrier, comprising a carrier support having at least about 95% SiC, with a silver solution impregnated thereon comprising silver oxide, ethylenediamine, oxalic acid, monoethanolamine and cesium hydroxide. A process for oxidation reactions (e.g., for the production of ethylene oxide, or oxidation reactions using propane or methane), or for endothermic reactions (e.g., dehydrogenation of paraffins, of ethyl benzene, or cracking and hydrocracking hydrocarbons).

A catalyst support comprising at least 95% silicon carbide, having surface areas of ≤10 m.sup.2/g and pore volumes of ≤1 cc/g. A method of producing a catalyst support, the method including mixing SiC particles of 0.1-20 microns, SiO.sub.2 and carbonaceous materials to form an extrusion, under inert atmospheres, heating the extrusion at temperatures of greater than 1400° C., and removing residual carbon from the heated support under temperatures below 1000° C. A catalyst on a carrier, comprising a carrier support having at least about 95% SiC, with a silver solution impregnated thereon comprising silver oxide, ethylenediamine, oxalic acid, monoethanolamine and cesium hydroxide. A process for oxidation reactions (e.g., for the production of ethylene oxide, or oxidation reactions using propane or methane), or for endothermic reactions (e.g., dehydrogenation of paraffins, of ethyl benzene, or cracking and hydrocracking hydrocarbons).

Provided are a carbon material for a catalyst carrier of a polymer electrolyte fuel cell, the carbon material being a porous carbon material and simultaneously satisfying (1) an intensity ratio (I.sub.750/I.sub.peak) of an intensity at 750° C. (I.sub.750) and a peak intensity in a vicinity of 690° C. (I.sub.peak), in a derivative thermogravimetric curve (DTG) obtained by a thermogravimetric analysis when a temperature is raised at a rate of 10° C./min under an air atmosphere, is 0.10 or less; (2) a BET specific surface area, determined by BET analysis of a nitrogen gas adsorption isotherm, is from 400 to 1,500 m.sup.2/g; (3) an integrated pore volume V.sub.2-10 of a pore diameter of from 2 to 10 nm, determined by analysis of the nitrogen gas adsorption isotherm using Dollimore-Heal method, is from 0.4 to 1.5 mL/g; and (4) a nitrogen gas adsorption amount V.sub.macro at a relative pressure of from 0.95 to 0.99 in the nitrogen gas adsorption isotherm is from 300 to 1,200 cc(STP)/g, as well as a method of producing the same.

Surgical tissue repair technologies incorporating nitric oxide releasing materials which release nitric oxide into the surrounding tissue. The surgical tissue repair technologies include tissue repair devices, such as surgical meshes, vascular stents, surgical grafts, irrigation solutions, and other internal surgical tissue repair materials. The nitric oxide releasing compound may be a S-nitrosothiol compound, such as s-nitroso-n-acetyl penicillamine (SNAP), s-nitrosoglutathione (GSNO), and mixtures thereof. The tissue repair devices may further include a catalyst to facilitate release of nitric oxide. The devices may include a substrate coated with a coating incorporating the same or different nitric oxide releasing compound. The devices may include a substrate impregnated with the nitric oxide releasing compound and coated with a polymer-based coating incorporating the same or different nitric oxide releasing compound. The polymer-based coating may include diazeniumdiolate groups (NONOate groups). The polymer-based coating may include a polyethyleneimine cellulose NONOate polymer.

Surgical tissue repair technologies incorporating nitric oxide releasing materials which release nitric oxide into the surrounding tissue. The surgical tissue repair technologies include tissue repair devices, such as surgical meshes, vascular stents, surgical grafts, irrigation solutions, and other internal surgical tissue repair materials. The nitric oxide releasing compound may be a S-nitrosothiol compound, such as s-nitroso-n-acetyl penicillamine (SNAP), s-nitrosoglutathione (GSNO), and mixtures thereof. The tissue repair devices may further include a catalyst to facilitate release of nitric oxide. The devices may include a substrate coated with a coating incorporating the same or different nitric oxide releasing compound. The devices may include a substrate impregnated with the nitric oxide releasing compound and coated with a polymer-based coating incorporating the same or different nitric oxide releasing compound. The polymer-based coating may include diazeniumdiolate groups (NONOate groups). The polymer-based coating may include a polyethyleneimine cellulose NONOate polymer.

A method for manufacturing a catalysis reactant having high efficiency catalysis for thermal reaction primarily includes: preparing a three-dimensional catalysis carrier; preparing at least one aqueous-phase nanometer metallic particle solution; soaking the catalysis carrier in a methanol solution containing a silane group compound and removing and subjecting the catalysis carrier to drying and freezing for surface modification; soaking the catalysis carrier in the aqueous-phase nanometer metallic particle solution and removing and subjecting the catalysis carrier to blow-drying to have the surface of the catalysis carrier combined with a first layer of nanometer metallic particles; soaking the catalysis carrier in a methanol solution containing 1,12-dodecaneamino to carry out surface modification and removing and subjecting the catalysis carrier to drying, followed by soaking in the aqueous-phase nanometer metallic particle solution and then blow-drying to have the surface of the catalysis carrier further combined with a second layer of nanometer metallic particles.

[Problem] The purpose of the present invention is to provide a deodorizing catalyst that can decompose a malodorous substance even at a low temperature of 100° C. or less.

[Solution] A deodorizing catalyst for decomposing a malodorous substance, comprising: manganese oxide wherein the manganese oxide satisfies the following expression (1) and the following expression (2), and the manganese oxide has a maximum intensity peak at a diffraction angle (2θ) of 37±1° in an X-ray diffraction pattern:

0<A≤0.90 . . .   (1)

0<B≤250 . . .   (2) wherein, in the above-mentioned expression (1), A represents the content ratio of manganese having an oxidation number of 3 (Mn.sup.3+) to manganese having an oxidation number of 4 (Mn.sup.4+) (Mn.sup.3+/Mn.sup.4+) in the manganese oxide, and, in the above-mentioned expression (2), B represents a specific surface area of the manganese oxide (m.sup.2/g)

[Problem] The purpose of the present invention is to provide a deodorizing catalyst that can decompose a malodorous substance even at a low temperature of 100° C. or less.

[Solution] A deodorizing catalyst for decomposing a malodorous substance, comprising: manganese oxide wherein the manganese oxide satisfies the following expression (1) and the following expression (2), and the manganese oxide has a maximum intensity peak at a diffraction angle (2θ) of 37±1° in an X-ray diffraction pattern:

0<A≤0.90 . . .   (1)

0<B≤250 . . .   (2) wherein, in the above-mentioned expression (1), A represents the content ratio of manganese having an oxidation number of 3 (Mn.sup.3+) to manganese having an oxidation number of 4 (Mn.sup.4+) (Mn.sup.3+/Mn.sup.4+) in the manganese oxide, and, in the above-mentioned expression (2), B represents a specific surface area of the manganese oxide (m.sup.2/g)

A method of visible-light photocatalysis combined with ClO.sub.2 oxidation for high efficient removal of organic pollutants in the wastewater, includes that i) the pH of the organic wastewater is adjusted to a constant value; the visible light photocatalysts are added to wastewater with full stirring to reach the adsorption equilibrium; (ii) turning on the Xenon lamp and adjust the distance between the light source and the liquid surface; chlorite is added to the system to reach a concentration and the reaction remained at a constant temperature with adequate stirring to achieve the degradation of organic pollutants.