Abstract: The disclosure generally provides zeolites having the CHA crystalline framework and methods of preparing the same. Provided herein are CHA zeolites containing intergrowths, a controlled framework aluminum distribution, or both. Further provided are CHA zeolites wherein crystals of the zeolite material have a predominantly flake-like morphology as determined by scanning electron microscopy (SEM). Further provided are catalyst compositions, articles, and systems including CHA zeolites promoted with a metal.

Abstract: The objective of the invention is the development of a new process for producing sulfur from phosphogypsum. During this process, the phosphogypsum is mixed with a source of carbon and hydrogen forming a slurry after mixing. This source of carbon and hydrogen is a natural or synthetic organic polymer, as an example that is not limiting, biomass, used tires or plastic, kerogen or tars. The granules undergo a heat treatment (100 to 150° C.) to evaporate the mixing water. The product obtained undergoes a heat treatment (550 to 900° C.) under a neutral atmosphere and/or partially oxidizing. The generated gases are bubbled in deionized water, sodium hypochlorite solution or a basic aqueous solution which allows the trapping, among others, of organosulfur molecules and the precipitation of sulfur S8. Non-entrapped gases are recovered to extract volatile sulfur products.

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: There is provided a nitride crystal substrate constituted by group-III nitride crystal, containing n-type impurities, with an absorption coefficient ? being approximately expressed by equation (1) by a least squares method in a wavelength range of at least 1 ?m or more and 3.3 ?m or less. ? = N e ? K ? ? a ? ( where 1.5 × 10 - 19 ? K ? 6. × 10 - 19 , a = 3 ) , ( 1 ) here, a wavelength is ? (?m), an absorption coefficient of the nitride crystal substrate at 27° C. is ? (cm?1), a carrier concentration in the nitride crystal substrate is Ne (cm?3), and K and a are constants, wherein an error of an actually measured absorption coefficient with respect to the absorption coefficient ? obtained from equation (1) at a wavelength of 2 ?m is within +0.1?, and in a reflection spectrum measured by irradiating the nitride crystal substrate with infrared light, there is no peak with a peak top within a wavenumber range of 1,200 cm?1 or more and 1,500 cm?1 or less.

Abstract: A method for preparing one or more generators with a high radium-228 content from an aqueous solution comprising thorium-232 and radium-228. The generator(s) can be used, in particular, for producing thorium-228, from which radium-224, then lead-212 and bismuth-212 can be obtained. The method and the generator(s) that it can be used to prepare are therefore applicable, in particular, in the manufacture of radiopharmaceuticals made from lead-212 or bismuth-212, which can be used in nuclear medicine and, in particular, in targeted alpha radiotherapy for the treatment of cancers.

Abstract: Embodiments of the present disclosure include techniques related to techniques for processing materials for manufacture of group-III metal nitride and gallium based substrates. More specifically, embodiments of the disclosure include techniques for growing large area substrates using a combination of processing techniques. Merely by way of example, the disclosure can be applied to growing crystals of GaN, AlN, InN, InGaN, AlGaN, and AlInGaN, and others for manufacture of bulk or patterned substrates. Such bulk or patterned substrates can be used for a variety of applications including optoelectronic and electronic devices, lasers, light emitting diodes, solar cells, photo electrochemical water splitting and hydrogen generation, photodetectors, integrated circuits, and transistors, and others.

Abstract: Methods of making various fibers are provided including co-axial fibers with oppositely doped cladding and core are provide; hollow core doped silicon carbide fibers are provided; and doubly clad PIN junction fibers are provided. Additionally methods are provided for forming direct PN junctions between oppositely doped fibers are provided. Various thermoelectric generators that incorporate the aforementioned fibers are provided.

Abstract: A NOX storage catalyst includes CHA zeolite, a transition metal ion-exchanged in the CHA zeolite, and a rare earth metal that is different the transition metal and is supported on the CHA zeolite. A method for preparing a NOX storage catalyst includes preparing a synthetic mother liquid including a zeolite raw material as a source of silica and alumina, a structure-inducing material, a complexing material, and a solvent, reacting the synthetic mother liquid to prepare a CHA zeolite, and supporting a transition metal and a rare earth metal that is different from the transition metal on the prepared CHA zeolite.

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: A process for preparing a catalyst material, includes the steps of: (a) providing a support material having surface hydroxyl (OH) groups, wherein the support material is ceria (CeO2), zirconia (ZrO2) or a combination of thereof; (b) reacting the support material having surface hydroxyl (OH) groups of step (a) with a precursor containing two transition metal atoms, each chosen independently from the group consisting of: W, Mo, Cr, Ta, Nb, V, Mn; (c) calcining the product obtained in step (b) in order to provide a catalyst material showing dual site surface species containing pairs of transition metal atoms derived from the precursor that are present in oxide form on the support material. Additionally, a catalyst material is obtained by the process set out above, and the catalyst material is used as an ammonia selective catalytic reduction (NH3-SCR) catalyst for nitrogen oxides (NOx) reduction.

Abstract: The present invention comprises a method of making and using a remediating composition for remediating contamination resulting from improper use or handling, or natural causes that would otherwise be damaging to, for example, the environment. Sources of contaminants include petroleum products, chemical and nuclear waste spills, biotoxin blooms, or combinations thereof. The method comprises allowing a heat-dried, particulate remediating composition to contact an amount of contaminated material for a time adequate to reduce the level of the contaminant in the contaminated material. Thereafter, testing of the previously contaminated material shows measurably lower amounts (often below measurable levels) of the contaminant, resulting in “decontaminated material”.

Abstract: A precipitated silica for use in tire applications. In particular, a precipitated silica characterised by a CTAB surface area SCTAB greater than 140 m2/g; a width of the aggregate size distribution Ld, measured by centrifugal sedimentation, of at least 1.2; a pH of less than 5.5; and a carbon content of less than 1500 ppm.

Abstract: A method of production of lignin and hemicellulose from a plant lignocellulosic material includes (a) contacting a plant lignocellulosic material with an extraction solution during more than 2 hours at a temperature between 95° ° C. to 110° C., thereby obtaining a solid fraction and a liquid fraction, (b) separating the solid fraction and the liquid fraction, (c) concentrating the liquid fraction so as to obtain a concentrated liquid fraction, (d) mixing equal parts by weight of water with the concentrated liquid fraction so as to obtain a suspension comprising solid particles in suspension in a liquid medium, (e) separating the particles and the medium of the suspension, (f) recovering the particles of the suspension thereby obtaining a fraction comprising lignin called lignified fraction, (g) recovering the medium of the suspension thereby obtaining a fraction comprising hemicellulose called hemicellulosic fraction.

Abstract: Provided herein are methods and systems to form calcium carbonate comprising vaterite, comprising dissolving lime in an aqueous base solution under one or more precipitation conditions to produce a precipitation material comprising calcium carbonate and a supernatant solution, wherein the calcium carbonate comprises vaterite.

Abstract: A method of converting nitrogen oxides in a gas to nitrogen by contacting the nitrogen oxides with a nitrogenous reducing agent in the presence of a zeolite catalyst containing at least one transition metal, wherein the zeolite is a small pore zeolite containing a maximum ring size of eight tetrahedral atoms, wherein the at least one transition metal is selected from the group consisting of Cr, Mn, Fe, Co, Ce, Ni, Cu, Zn, Ga, Mo, Ru, Rh, Pd, Ag, In, Sn, Re, Jr and Pt.

Abstract: A novel catalyst composition and its use in the dehydrogenation of alkanes to olefins. The catalyst comprises a Group VIII noble metal selected from the group consisting of nickel, iron, cobalt, and combinations thereof, and a metal selected from the group consisting of molybdenum, indium, phosphorous, zinc, and combinations thereof, on a support. The catalyst composition is an active and selective catalyst for the catalytic dehydrogenation of alkanes to olefins.

Abstract: A preparation method according to the present invention includes use of an amine-based coupling agent to prepare plate-type manganese dioxide nanoparticles. The plate-type manganese dioxide nanoparticles thus prepared can be suitably mixed with a carbon-based conductive material and are thus useful a positive electrode material for pseudo-capacitors.

Abstract: A method of making SiC nanowires comprising: (a) mixing silicon powder with a carbon-containing biopolymer and a catalyst at room temperature to form a mixture; and (b) heating said mixture to a pyrolyzing temperature sufficient to react said biopolymer and said silicon power to form SiC nanowires.

Abstract: Provided is a supercritical drying method of a silica wet gel blanket and a method for producing a silica aerogel blanket including the same, the supercritical drying method preventing a salt from being accumulated inside equipment during supercritical drying. By preventing a salt from being accumulated inside equipment during supercritical drying, it is possible to improve the operational stability of the supercritical drying process. In addition, since only a line filter needs to be separated and is easily washed, the time required for washing and the total amount of ammonia wastewater generated therefrom can be reduced, thereby improving efficiency and reducing costs.

Abstract: Chemical liquid is injected into a tank. A concentration of a first gas dissolved in the chemical liquid is detected. Based on the detected concentration of the first gas, at least one of the first gas and a second gas is injected into the tank to sustain at least one of the concentration of the first gas and a concentration of the second gas in a range of a target value.