摘要:
Disclosed are a semiconductor photocatalyst for the photocatalytic reforming of biomass derivatives for hydrogen generation, and preparation and use thereof. The semiconductor photocatalyst has the atomic composition ratio of M-N-Ax; wherein M-N are IIB group elements to VIA group elements, or IIIA group elements to VA group elements, A being one element or more than two elements selected from the group consisting of cobalt, nickel, iron, copper, chromium, palladium, platinum, ruthenium, rhodium, iridium and silver; and 0.02% ≤ x ≤ 1.0%. The method of in-situ preparation of the highly effective semiconductor photocatalyst and catalytically reforming biomass derivatives for hydrogen generation by driving photoreaction with visible light via quantum dots is simple, fast, highly effective, inexpensive and practical. The in situ reaction can occur in sunlight without the need of harsh conditions such as calcination.
摘要:
A method of producing an amorphous catalyst or catalyst precursor in the form of a powder having a surface area of from 0.1 m 2 /g to 50 m 2 /g which chemical composition comprises oxygen, carbon, hydrogen, optionally nitrogen, and at least a first and a second further elements, said method comprising: a. Generating an aerosol comprising a mixture of derivatives, said mixture of derivatives comprising at least one derivative per further element, each derivative being a derivative of at least one of said further elements, and at least one of said derivatives being an organic derivative, b. Diluting said aerosol by a gas, and c. Passing said diluted aerosol in a plasma generated between two electrodes, at least one of which being provided with a dielectric, thereby forming an amorphous catalyst or catalyst precursor on one of said electrodes.
摘要:
Described are an antibacterial covering panel and a method for making the panel. The panel comprises a supporting layer having a first surface for connection to a surface to be covered, for example the interior surface of an ambulance, and a second surface which is opposite to the first surface; at least one composite material is positioned outside in view at the second surface of the supporting layer and comprises at least one layer of particles of photocatalytic material.
摘要:
A catalyst solution includes a precious metal nanoparticle and a polymer having a carboxyl group and a nitrogen atom. The catalyst solution is useful for a catalyzing an electroless process for plating metal on non-conductive surfaces.
摘要:
The present invention relates to a material including: (i) nanotubes or nanowires aligned relative to one another within a vertical matrix; and (ii) a matrix arranged between the nanotubes or the nanowires, at least one organic polymer being covalently grafted onto at least two of said nanotubes or onto at least two of said nanowires. The present invention also relates to method for preparing such a material or to the uses thereof.
摘要:
The present invention relates to a method for preparing a vanadia-titania catalyst having a core-shell structure, which is highly active in decomposing chlorinated organic compounds such as dioxin present in the exhaust of an incinerator.
摘要:
The present invention provides a hydrodesulfurization catalyst exhibiting a high desulfurization activity when used for hydrotreating a hydrocarbon oil, particularly straight-run gas oil. The hydrodesulfurization catalyst is a catalyst produced by pre-sulfurizing a hydrodesulfurization catalyst Y comprising a support containing silica, alumina and titania and at least one type of metal component supported thereon and selected from VIA and VIII groups of the periodic table (comprising at least Mo), in which the total area of the diffraction peak area indicating the crystal structure of anatase titania (101) planes and the diffraction peak area indicating the crystal structure of rutile titania (110) planes in the support, measured by X-ray diffraction analysis being 1/4 or less of the alumina diffraction peak area assigned to γ-alumina (400) planes, the molybdenum is formed into molybdenum disulfide crystal and disposed in layers on the support by the pre-sulfurization, and the molybdenum disulfide crystal layers having an average length of longer than 3.5 nm and 7 nm or shorter in the plane direction and an average number of laminated layers of more than 1.0 and 1.9 or fewer.
摘要:
A method comprises providing a population of catalyst particles and growing a population of semiconductor nanowires catalytically from the population of catalyst particles. The nanowires of the population have a variation in diameter of less than about 20%, and the nanowires of the population have a smallest width less than 500 nanometers. Preferably the nanowires of the population have a variation in diameter of less than about 10%.