Abstract: The present invention relates to a technology for the production of porcelain stoneware products, wherein the treatment process allows to re-use recovery materials coming from the treatment of urban waste. In particular, the present invention relates to the production of products for the construction of driveways.

Abstract: This disclosure enables the generation and patterning of color centers with nanometer-scale spatial control in a variety of materials in repeatable fashion and without the use of radiation. Embodiments in accordance with the present disclosure employ a layer of vacancy-injection material disposed on a host-material, where the vacancy-injection material forms a compound with host-material atoms at elevated temperatures. During compound formation, lattice vacancies are generated in the host material and diffuse within the substrate lattice to bond with impurity atoms, thereby forming color centers. High-resolution lithographic patterning of the vacancy-injection film and the short diffusion lengths of the lattice vacancies enables nanometer-level spatial control over the lateral positions of the color centers. Furthermore, the depth of the color centers in the substrate can be controlled by controlling the coating material, thickness, anneal time, and anneal temperature.

Abstract: A method of utilizing humic acid to prepare layered humic acid/manganese oxide composite catalyst and its application, the method includes the steps of: adding sodium hypochlorite, manganese salt and humic acid to a water source, stirring and mixing; then introducing into a filter device having a filter material of manganese and a support medium, and generating a layered humic acid/manganese oxide composite catalyst on a surface of the filter material while directing a continuous water flow of the water source into the filter device with a short empty bed contact time for a short time. The catalyst can be used to effectively remove manganese to maintain an effluent with a Mn2+ concentration of not more than 20 ?g/L and to effectively remove heavy metals such as iron, manganese, arsenic, thallium, molybdenum or lead from the water source under neutral, acidic or alkaline conditions with a removal rate of 95% more.

Abstract: A method of hydrogen (H2) generation includes hydrolyzing a borohydride salt in an aqueous solution including a catalyst to form gaseous hydrogen. The catalyst is a bismuth(III) oxide-doped silicon dioxide with an amount of bismuth(III) oxide from 2 wt. % to 12 wt. % based on a total weight of the bismuth(III) oxide-doped silicon dioxide. The bismuth(III) oxide is dispersed in silicon dioxide in the catalyst. The weight ratio of the catalyst to the borohydride salt present in the aqueous solution is from 0.1:2 to 7:1 and a rate of hydrolysis of the borohydride salt in the presence of the catalyst is 2 to 3 times greater than a rate of hydrolysis of the borohydride salt in the absence of the catalyst.

Abstract: Disclosed are a tungsten hexafluoride preparation method and apparatus based on photoelectric synergy. A photocatalyst and metal tungsten are sequentially filled in a discharge area of a plasma reactor in a direction of gas entry, and the discharge area of the plasma reactor is irradiated with light at the same time; the background gas generates a large amount of plasma in the discharge area, SF6 undergoes decomposition under the synergistic effect of photocatalysis and plasma, SF6 is decomposed to generate fluorine atoms and low-fluorine sulfides such as SF5 and SF4. The generated fluorine ions, SF5, SF4 and low-fluorine sulfides further react with metal tungsten to generate WF6 specialty gas, which not only realizes the utilization of fluorine resources of SF6, but also replaces highly toxic fluorine gas with non-toxic SF6 exhaust gas in the plasma reactor for reaction, thereby ensuring safe operation and low energy consumption.

Abstract: There is disclosed a method of forming chlorine dioxide comprising passing chlorous acid through a membrane including a catalyst suitable to catalyse the formation of chlorine dioxide from chlorous acid. There is also disclosed a membrane suitable for forming an aqueous solution of chlorine dioxide comprising a catalyst suitable to catalyse the formation of chlorine dioxide from chlorous acid or alkali metal chlorite.

Abstract: The present invention may provide a nano-sized composite having excellent electrical conductivity and specific surface area. The present invention may provide a method of producing the above-described composite through a simple process without an ultracentrifugation process or a flash annealing step. The present invention may provide an energy storage device having high power performance and having excellent specific capacity characteristics not only at low current density but also at high current density.

Abstract: Provided is a method of producing a catalyst or adsorbent carrier and a catalyst or adsorbent carrier which can enhance a catalyst or adsorbent function, and prevent fall-off of catalyst particles or adsorbent particles. The surface of a metal base material made of aluminum or an aluminum alloy is subjected to an etching process using an etchant containing iron chloride and an oxide to convert the surface to an uneven and rough surface. The uneven and rough surface of the metal base material is subjected to an anodizing process to form a porous coating along the uneven and rough surface. A large number of catalyst or adsorbent particles are thus carried on the surface of the metal base material on which the porous coating is formed along the uneven and rough surface.

Abstract: A method for producing a tetrahydroborate includes a hydrogenating step (step S14) of exposing a borate to a hydrogen plasma while grinding the borate.

Abstract: A process for removing carbon dioxide from a material includes introducing the material onto a first segment of a conveyance system comprising the first segment and a second segment that is physically separated from the first segment, heating the material at the first segment for a first time using a first infrared emitter, conveying the material from the first segment to the second segment, and heating the material at the second segment for a second time using a second infrared emitter. The carbon dioxide removed from the material can be captured by a vacuum pump and stored, and the vacuum pump can maintain a partial pressure for the process. The process can be used to create lime and clinker with minimal CO2 emissions and to remove CO2 that is stored in various materials.

Abstract: The phosphazene covalent organic framework (COF) is a material with high efficiency to improve the removal of iodine from nuclear waste. The COF can be obtained by a solvothermal reaction of hexa (4-formyl-phenoxy)cyclotriphosphazene and 1,3,6,8-tetra(aminophenyl)pyrene. The resulting three-dimensional phosphazene COF has iodine uptakes as high as 9.4 g g?1 due to its 3D framework with higher specific surface areas and interconnected channels.

Abstract: A thermal method of forming ferric oxide nano/microparticles with predominant morphology is described using different solvents. Methods of using the Fe3O4 nano/microparticles as catalysts in the reduction of nitro compounds with sodium borohydride to the corresponding amines and decomposition of ammonium salts.

Abstract: Glass ceramics having SiO2 as main crystal phase and precursors thereof are described which are characterized by very good mechanical and optical properties and in particular can be used as restoration material in dentistry.

Abstract: A vertical bleaching tower for removing dissolved nitrogen oxides from an aqueous nitric acid solution using a stripping gas such as air, nitrogen, oxygen or combinations thereof in a process for producing nitric acid, comprising a structured packing; a liquid distributor comprising a feed box having a serrated weir for distribution of the aqueous nitric acid solution comprising the dissolved nitrogen oxides through upward-pointing serrations of the serrated weir into perforated trays of the liquid distributor and located above the structured packing for distributing the aqueous nitric acid solution comprising the dissolved nitrogen oxides to the structured packing; an inlet and outlet, both suitable for aqueous nitric acid solution; and an inlet and outlet, both suitable for the stripping gas. The present invention further comprises a bleaching method for removing dissolved nitrogen oxides from an aqueous nitric acid solution in a vertical bleaching tower.

Abstract: The present disclosure relates to a catalyst for ammonia decomposition, a manufacturing method therefor, and a method for producing hydrogen using the same. More particularly, the present disclosure relates to a catalyst for ammonia decomposition, a manufacturing method therefor, and a method for producing hydrogen using the same, in which by manufacturing a catalyst for decomposition of ammonia using a solvothermal synthesis method to which alcohol is applied, an ammonia conversion rate can be improved due to excellent catalytic activity in an ammonia decomposition reaction, and hydrogen can be efficiently produced from ammonia due to long-term stability even at a high temperature and for long periods of time.

Abstract: A reaction-bonded silicon carbide (SiC) body is produced by: providing a preform including ceramic elements and carbon, and one or more surface features; providing a powder which includes diamond particles and carbon; locating the powder in the surface feature(s); and infiltrating the preform and the powder with molten silicon (Si) to form reaction-bonded SiC in the preform, and to form reaction-bonded SiC coatings on the diamond particles. The present disclosure also relates to a device/component which includes: a main body portion and discrete elements located at least partially within the main body portion. The main body portion may include reaction-bonded SiC and Si, but not diamond, while the discrete elements include diamond particles, reaction-bonded SiC coatings surrounding the diamond particles, and Si. According to the present disclosure, diamond may be advantageously located only where it is needed.

Abstract: The invention relates to a method for preparing transitional-metal particles (cathode particle precursor) under a co-precipitation reaction. In this method, by feeding different types of anion compositions and/or cation compositions, and adjusting the pH to match with the species, precipitated particles are deposited to form a slurry, colleting the slurry, treating with water, and drying to get a cathode particle precursor. Mixing the cathode particle precursor with a lithium source and calcining to yield core-shell structured cathode active particles. Such cathode active particle can be used to prepare cathode of lithium-ion battery.

Abstract: Provided is a method for preparing copper azide and cuprous azide encapsulated by conductive metal-organic framework. The method uses a conductive copper-containing metal-organic framework material as a precursor, and completes the azidation of the precursor by means of a liquid-solid electrochemical azidation reaction. Copper azide and cuprous azide nanocrystals are highly uniformly embedded within a conductive framework, which may effectively avoid the agglomeration of copper azide and cuprous azide, and reduce static charge generated by friction, displacement, and the like. Meanwhile, the conductive framework may promote the effective transfer of charge, avoid the accumulation of static charge, and improve the electrostatic safety.

Abstract: The present invention relates to the field of solid-phase extraction, and particularly to a solid-phase extraction material, and a preparation method and use thereof. The preparation method includes prepolymerizing the monomers N-vinylpyrrolidone and divinylbenzene in the presence of a chain transfer agent, adding prepolymer dropwise to an emulsion of monodispersed seed microspheres, swelling, and reacting to prepare white spheres; and functionalizing the white spheres, to obtain the solid-phase extraction material. The solid-phase extraction material prepared by the reaction has good spherical morphology, large specific surface area, and high ion exchange capacity. The prepared solid-phase extraction material functions in the separation and enrichment of PPCPs by means of a variety of forces with a high extraction rate. The extraction rate is basically maintained between 85% and 105%, and acidic, alkaline, neutral and amphoteric substances is capable of being selectively separated.

Abstract: A ceramic material includes zirconia toughened alumina (ZTA) doped with scandium (Sc) ions. ZTA can be further doped with other metal ions, and the other metal ions include cobalt (Co) ions, chromium (Cr) ions, zinc (Zn) ions, titanium (Ti) ions, manganese (Mn) ions, nickel (Ni) ions, or a combination thereof. The ceramic material can be used as a ceramic object, such as a wire bonding capillary, a heat dissipation plate, a denture tooth, orthopedic implants, direct bonded copper, or a high-temperature co-fired ceramic.