Abstract: Techniques for preparing an electrocatalyst include growing and immobilizing an earth-abundant metal on an MXene two-dimensional (2D) substrate using a solvothermal, hydrothermal, or electrodeposition process. The earth-abundant metal may include NiFeOOH. The earth-abundant metal may include Mn, Fe, Co, Ni, Cu, Ti, V, Cr, and a combination thereof. The earth-abundant metal may be nanoparticles. The nanoparticles may include multiple metals. The electrocatalyst may be provided for an oxygen evolution reaction. The electrocatalyst may produce a current density of 500-1000 mA/cm2 for at least 20 hours without degradation thereof.

Abstract: Presented is a catalyst composition having exceptional properties for converting sulfur, sulfur compounds, and carbon monoxide contained in gas streams by catalyzed hydrolysis, hydrogenation and water-gas shift reactions. The catalyst comprises underbedded molybdenum and cobalt with an overlayer of molybdenum and cobalt. These metals are present in the catalyst within certain concentration ranges and relative weight ratios. The underbedded metals are present in the catalyst within a specified range relative to the overlayer and total metals. The underbedded metals are formed by co-mulling an inorganic oxide with the catalytically active metals of molybdenum and cobalt. The co-mulled mixture is calcined and then impregnated with overlaid molybdenum and cobalt.

Abstract: Provided is an adhesive composition, an adhesive product, and a method of preparing an adhesive composition. The adhesive composition including lysine, oxaloacetic acid, and water, wherein the lysine and the oxaloacetic acid are present in the form of an aqueous salt solution and do not form precipitates in the aqueous solution.

Abstract: Provided is a calcium carbonate that comprises crystals having a particular shape and structure and has a nano-order average particle size. Provided are a method for producing a calcium carbonate that comprises crystals having a particular shape and structure and has an average particle size in a particular range and a crystal growth method. The calcium carbonate has the calcite structure, has a BET specific surface area of 2 to 50 m2/g, has a number-based average particle size of 30 nm to 1.0 ?m as determined by electron microscopy, and partially comprises substantially ring-like particles.

Abstract: A supported transition metal carbide catalyst and a one-step synthesis method thereof are disclosed. The synthesis method includes: mixing a supporter, a transition metal precursor and a solid carbon source and then grinding to form a solid mixture; and putting the solid mixture into a reducing atmosphere, performing carbonization treatment and high-temperature programming thermal treatment in turn, and then at a protective atmosphere, cooling and passivating, so as to obtain the supported transition metal carbide catalyst. The synthesis method provided by the present application utilizes high-temperature solid solution reaction for further synthesis, which at least has the following advantages: the preparation process flow is simple so processes such as impregnation and carburization with gas carbon source can be avoided; different supporters used for catalyst modification, and the prepared catalyst has the characteristics of large outer surface area, rich notable metal-like catalytic property and the like.

Abstract: Silica particles include a nitrogen-containing compound. When the volumes of pores having a diameter of 1 nm or more and 50 nm or less, the volumes being determined from a pore size distribution curve of the silica particles before and after the silica particles are baked at 350° C., the pore size distribution curve being obtained by nitrogen gas adsorption, are defined as A and B, respectively, B/A is 1.2 or more and 5 or less and B is 0.2 cm3/g or more and 3 cm3/g or less.

Abstract: Methods are provided for forming supported catalyst compositions and/or corresponding intermediate catalyst products. The catalyst compositions have improved activity for hydroprocessing of distillate boiling range feeds under hydroprocessing conditions where the hydrogen partial pressure in the hydroprocessing environment is reduced or minimized. The catalyst compositions can correspond to supported CoMo catalysts. The improved activity for hydroprocessing under lower pressure conditions is unexpectedly achieved by using a plurality of treatments with organic compounds during the catalyst formation process.

Abstract: Bauxite residue recovery includes mixing a solution of hydrochloric acid (HCL) according to a predetermined concentration, and adding the HCL solution to a quantity of raw red mud recovered from industrial operations as waste material. The highly alkaline property of the bauxite residue, commonly known as red mud is at least partially neutralized from the HCL, and makes the resulting washed red mud more amenable to subsequent uses in various applications in fields such as construction, wastewater treatment, and metal recovery processes. The process recovers washed red mud from the red mud and HCL solution by filtering the raw red mud and HCL solution for generating a stream of leach liquor from the filtrate and the recovered washed red mud from the residue.

Abstract: Nanoporous carbon-based scaffolds or structures, and specifically carbon aerogels and their manufacture and use thereof are provided. Embodiments include a silicon-doped anode material for a lithium-ion battery, where the anode material includes beads of a polyimide-derived carbon aerogel. The carbon aerogel may further include silicon particles and accommodates expansion of the silicon particles during lithiation. The anode material provides optimal properties for use within the lithium-ion battery.

Abstract: Described herein is a nanostructured silicon carbonaceous composite material and methods for producing the same. The methods include formation of a metal organic framework/silica (MOF/SiO2) intermediate material and conversion of the MOF/SiO2 intermediate material to the nanostructured silicon carbonaceous composite material. Relatively inexpensive and/or recycled materials can be used as precursors in manufacturing the nanostructured silicon carbon composition material, which can be used in various applications, including as silicon anode material in a lithium-ion battery.

Abstract: A method of producing a fluorescent nanodiamond exhibiting a zero phonon line (ZPL) for NV0 and/or NV? on its fluorescence emission wavelength spectrum. The method includes a detonation step of exploding at least one type of explosive in an airtight container to obtain a nanodiamond raw material, a first annealing step of annealing, at a temperature from 1000° C. to 1600° C., the nanodiamond raw material or a nanodiamond which is obtained by removing sp2 carbon through strong acid treatment, ozone treatment, or gas-phase oxidation of the nanodiamond raw material, a vacancy forming step of creating vacancies on the nanodiamond by irradiating the nanodiamond with an ion beam or an electron beam after the first annealing step, and a second annealing step of annealing, at a temperature from 600° C. to 900° C., the nanodiamond containing vacancies to form Nitrogen-Vacancy (NV) centers.

Abstract: A functionalized fibrous hierarchical zeolite includes a framework comprising aluminum atoms, silicon atoms, and oxygen atoms, the framework further comprising a plurality of micropores and a plurality of mesopores. A plurality of nanoparticles comprising nickel are immobilized on the framework.

Abstract: A method for manufacturing a concrete product includes providing a metal-based cementing agent, and an acid-based cement reacting agent of the form HnXOm, where “X” is an element selected from group consisting of phosphorous, carbon, sulfur and boron, “n” and “m” are selected so that the cement reacting agent is an acid, and “X” will bond with the metal-based cementing agent to form a metal cement. The method further includes providing an aggregate defined by an exposed surface area having metallic aggregate linking elements thereon which can chemically bond with “X” in the presence of the acid-based cement reacting agent, and providing a hydroxide-supplying additive. The method includes combining together the metal-based cementing agent, the acid-based cement reacting agent, the aggregate and the hydroxide-supplying additive, and allowing the metal-based cementing agent and the acid-based cement reacting agent to react and bond with the aggregate to form the concrete product.

Abstract: Provided is a calcium carbonate that comprises crystals having a particular shape and structure and has a nano-order average particle size. Provided are a method for producing a calcium carbonate that comprises crystals having a particular shape and structure and has an average particle size in a particular range and a crystal growth method. The calcium carbonate has the calcite structure, has a BET specific surface area of 2 to 50 m2/g, has a number-based average particle size of 30 nm to 1.0 ?m as determined by electron microscopy, and partially comprises substantially ring-like particles.

Abstract: A negative thermal expansion material having a negative thermal expansion coefficient according to the present invention is represented by Zr2?aMaSxP2O12+?, where M is at least one selected from Ti, Ce, Sn, Mn, Hf, Ir, Pb, Pd, and Cr; a is 0?a<2; x is 0.4?x?1; and ? is a value defined as to satisfy a charge neutral condition. The present invention makes it possible to provide a negative thermal expansion material, a composite material and a method for producing a negative thermal expansion material that can realize reduction in cost and density reduction.

Abstract: Disclosed is a method for preparing a perovskite nanoparticle using a fluidic channel including a first step of forming a fluidic channel including a first outer tube, a second outer tube, and a storage tube capable of introducing flows of fluids, a second step of inducing formation of the perovskite nanoparticles by continuously preparing a mixed fluid with a laminar flow based on a flow rate by introducing a flow of a base fluid into the first outer tube, and introducing a flow of a dispersion fluid in the same direction as the flow of the base fluid into the second outer tube, and a third step of separating the perovskite nanoparticles from the mixed fluid stored in the storage tube.

Abstract: Methods, systems, and compositions related to the recycling and/or recovery of activating materials from activated aluminum are disclosed. In one embodiment, an aqueous solution's composition may be controlled to maintain aluminum ions dissolved in solution during reaction of an activated aluminum. In another embodiment, aluminum hydroxide containing the activating materials may be dissolved into an aqueous solution to isolate the activating materials.

Abstract: The invention provides a gold-supporting catalyst comprising gold nanoparticles and a carrier consisting of porous ceramic obtained by firing a mixture comprising an aluminum compound, a lime component, and a plastic clay containing 1% by mass or less of feldspars and quartz, wherein the gold nanoparticles are supported in an amount of 0.01 to 10 parts by mass on the carrier based on 100 parts by mass of the carrier.

Abstract: Various methods and systems are provided for facilitating the creation of a new and potentially thinner form of dielectric. Alternatively, for a given capacitance, a thicker layer can be created with lower risk of leakage. The present disclosure will enable the creation of physically smaller electronic components. Isotope-Modified Hafnium Dielectric is used to create a dielectric layer with a greater range of dielectric coefficients, which may enable the creation of smaller and/or more reliable electronic components.

Abstract: A fluidized catalytic reactor system cycles from 0.05-5% of catalyst at a time through a rejuvenation unit to be heated in the presence of oxygen to maintain catalyst activity. The use of the rejuvenation unit that may be 2% of the size of the main catalyst regeneration unit allows for reduction in equipment size and in catalyst inventory. The catalyst that is sent to the rejuvenation unit may be spent catalyst but may be partially or fully regenerated catalyst. The rejuvenation unit may be heated by combusting fuel or by hot flue gas.