A catalyst for catalytic oxidation-deoxidation method of unsaturated hydrocarbon-containing gas has a carrier, an active component, a first co-agent component, and a second co-agent component loaded on the carrier respectively. The active component is one or more selected from the group consisting of oxides of Pt, Pd, Ru, Rh, Ag and Ir. The first co-agent component has one or more selected from the group consisting of a rare earth metal element, a group IVB metal element and a group VIII metal element; and the second co-agent component has one or more alkali metal element and alkaline earth metal element. The deoxidation method using the catalyst eliminates the need to add a reducing gas such as H.sub.2, allows hydrocarbons to react directly with oxygen to produce CO.sub.2 and H.sub.2O, achieves the goal of deoxidating a hydrocarbon-containing tail gas, and can prevent the generation of carbon deposits.

A method for preparing a core-shell structure photocatalytic material includes: obtaining a titanyl sulfate solution by mixing and reacting sulfuric acid and metatitanic acid; obtaining a mixed solution by adding a porous material having a hydrophilic surface into the titanyl sulfate solution; adding an alkali into the mixed solution to obtain a precipitation product by reacting the alkali with the titanyl sulfate coated on the surface of the porous material; and filtering, washing, drying and calcining the precipitation product to obtaining a core-shell structure photocatalytic material with the porous material as a core and a mesoporous quantum titanium oxide as a shell.

A hydrogen sensitive film, a hydrogen sensor and a preparation thereof. The hydrogen sensitive film has a composite structure of an aerogel and a catalyst. The aerogel can adsorb hydrogen and undergo hydrogenation reaction with hydrogen. The catalyst is a nano-noble metal catalyst for catalyzing the hydrogenation reaction, and is distributed in pores of the aerogel. The hydrogen sensitive film is prepared by mixing a catalyst into an aerogel through physical compounding. The hydrogen sensor includes an insulating substrate layer, the hydrogen sensitive film and an electrode layer.

A method of manufacturing a catalyst article, the method comprising: providing a complex of a maleic acid-containing polymer and a PGM; providing a support material; applying the complex to the support material to form a loaded support material; disposing the loaded support material on a substrate; and heating the loaded support material to form nanoparticles of the PGM on the support material.

This application relates to silver-titanium oxide complex particles. In one aspect, the silver-titanium oxide complex particles include a plurality of titanium oxide nanoparticles aggregated with each other. The silver-titanium oxide complex particles may also include a silver component bonded on the surface of the titanium oxide nanoparticles, and have an energy band gap of 3.1 eV or less. According to various embodiments, the silver-titanium oxide complex particles show excellent optical characteristics.

A composition consisting essentially of a perovskite crystalline structure includes ions of a first metal M1 which occupies an A-site of the perovskite crystalline structure and ions of a second metal M2 which occupies a B-site of the perovskite crystalline structure. M2 has two oxidation states capable of forming a redox couple suitable for reversibly catalyzing an oxygen reduction reaction (ORR) and an oxygen evolution reaction (OER). The composition also includes ions of a third metal M3 at least a portion of which substitutes for M1 in the A-site of the perovskite crystalline structure, and at least a portion of which optionally also substitutes for M2 in the B-site of the perovskite crystalline structure. At least some of the ions of M3 have a different oxidation state to the ions of M1. The composition also includes atoms of an element X, which is a chalcogen.

A method of producing a catalyst comprises generating an aerosolized flow of catalyst support particles, heating a catalytically active compound precursor to produce a catalytically active compound precursor vapor, contacting the aerosolized flow of catalyst support particles with the catalytically active compound precursor vapor, and condensing the catalytically active compound precursor onto the catalyst support particles to produce the catalyst comprising catalytically active compound deposited on surfaces of the catalyst support particles. The method may further comprise aerosolizing a catalyst support precursor mixture, drying the aerosolized catalyst support precursor mixture in a first heating zone to form an aerosolized flow of catalyst support particles, and contacting the catalyst support particles with a catalytically active compound precursor vapor in a second heating zone to form the catalyst comprising the layer of the catalytically active compound deposited on surfaces of the catalyst of catalyst support particles.

Nanoparticles that can be used as hydrosilylation and dehydrogenative silylation catalysts. The nanoparticles have at least one transition metal with an oxidation state of 0, chosen from the metals of columns 8, 9 and 10 of the periodic table, and at least one carbonyl ligand, preferably a silicide.

Methods for producing a carbon-free, PGM-free support for PGM catalyst. The catalytic material comprises PGM metals disposed on a carbon-free support which is catalytic but free of PGM.

Disclosed is the synthesis of novel supported metal catalytic materials for electromagnetic radiation absorption and chemical catalysis especially in the presence of plasma used in the conversion of nitrogen from air and hydrogen from water to useful products such as nitric acid, hydrogen, ammonia and fertilizers. These materials can also generate plasma when subjected to microwave irradiation thus form the basis of catalytic plasma reactors. They can be used in chemical looping reactions because plasma generation under microwave irradiation in air results in the reduction of catalyst oxides and oxidation of nitrogen.