Abstract: A method for in-situ sequestration and mineralization of CO2 includes providing an olivine formation having a temperature of 100 to 200° C., at least one injection wellbore that connects a ground surface and the formation, and providing an aqueous fluid to the formation. The method further includes introducing a pH adjuster to the formation to adjust pH of the aqueous fluid to the range of from 7 to 8, injecting CO2 into the subterranean formation through the injection wellbore, dissolving CO2 in the aqueous fluid, and reacting CO2 with magnesium in the olivine. A system for in-situ sequestration and mineralization of CO2 includes an olivine formation, an aquifer in a vicinity of the formation, at least one injection wellbore configured to inject CO2 into the formation, and at least one transfer wellbore connecting the injection wellbore and the aquifer to provide an aqueous fluid from the aquifer to the formation.

Abstract: A method of catalytic ammonia decomposition is provided. The method includes: flowing ammonia into a reactor charged with a medium entropy metal alloy (MEA) catalyst including a first principal metal, a second principal metal, and a third principal metal, where each of the principal metals is independently selected without repetition from the group consisting of Co, Cr, Fe, Mn, Ni, Al, Cu, Zn, Ti, Zr, Mo, V, Ru, Rh, Pd, Ag, W, Re, Ir, Pt, Au, Ce, Y, Yb, Sn, Ga, In, and Be; and catalytically decomposing the ammonia into hydrogen and nitrogen over the MEA catalyst in the reactor at a reaction temperature between 200° C. and 900° C.

Abstract: A method of producing H2 may include passing a hydrocarbon feed into a reactor, wherein the hydrocarbon feed comprises at least 50 mol. % methane. The method may also include contacting the methane with a catalyst in the reactor to form a product comprising H2. The catalyst may comprise a support and one or more catalytically-active metals. At least 99 wt. % of the one or more catalytically-active metals may be present in the catalyst as single-atoms, based on a total weight of the one or more catalytically-active metals in the catalyst.

Abstract: Compositions and methods for the catalysis of methane pyrolysis. Compositions include a catalyst system that includes a medium entropy alloy particle and a support. Methods include catalyzing the pyrolysis of methane using the catalyst system.

Abstract: Compositions and methods for the catalysis of methane pyrolysis. Compositions include a catalyst that includes a medium entropy alloy particle. Methods include catalyzing the pyrolysis of methane using the catalyst.

Abstract: A method of catalytic ammonia decomposition, where the method includes: flowing ammonia into a reactor charged with a supported medium entropy metal alloy (MEA) catalyst including MEA particles supported on a support, the MEA particles including a first principal metal, a second principal metal, and a third principal metal, where each of the principal metals is independently selected without repetition from the group consisting of Co, Cr, Fe, Mn, Ni, Al, Cu, Zn, Ti, Zr, Mo, V, Ru, Rh, Pd, Ag, W, Re, Ir, Pt, Au, Ce, Y, Yb, Sn, Ga, In, and Be; and catalytically decomposing the ammonia into hydrogen and nitrogen over the supported MEA catalyst in the reactor at a reaction temperature between 200° C. and 900° C.

Abstract: A system for producing hydrogen including a methane pyrolysis reactor, a solid-gas separator, and a downstream unit. The system includes a hydrogen and nitrogen feed upstream of the reactor that includes a tube reactor, a catalyst, a frit, and a heating mechanism. The system includes a first and second pressure gauge. A process for producing hydrogen including feeding a hydrogen stream to activate a catalyst, feeding a methane feed to a methane pyrolysis reactor, monitoring a differential pressure, feeding a nitrogen stream to purge the catalyst, feeding the methane pyrolysis product stream to a solid-gas separator, recovering the solid carbon byproduct, feeding a gas mixture stream into a downstream unit and recovering the separated hydrogen. A process for producing hydrogen using methane pyrolysis reactors by concurrently operating at least one of the reactors in a reaction mode and at least one of the reactors in a regeneration mode.

Abstract: High entropy alloy catalysts may be used for production of hydrogen. An example method of hydrogen production may include: introducing a hydrocarbon to a reactor, wherein the reactor contains therein a catalyst, wherein the reactor is substantially absent of oxygen and water, wherein the catalyst comprises a high entropy alloy and a catalyst support, wherein the catalyst is present in a form of a first plurality of particles, wherein the first plurality of particles is submicron-sized, wherein the high entropy alloy has an entropy, S, such that S?12.47 J K?1 mol?1, and wherein the high entropy alloy comprises at least five of: iron, cobalt, manganese, nickel, molybdenum, copper, zinc, titanium, chromium, vanadium, aluminum, gallium, ruthenium, rhodium, palladium, silver, indium, tungsten, rhenium, iridium, platinum, gold, and bismuth; and reacting the hydrocarbon over the catalyst to produce solid carbon and hydrogen gas.

Abstract: A conveniently-mounted split side-emitting small panel lamp belongs to the technical field of light-emitting diode (LED) lamps. The conveniently-mounted split side-emitting small panel lamp includes a rear cover; an inner wall of the rear cover is connected to a light source module; reflective paper, a light guide plate, and a diffusion plate are arranged inside the rear cover in sequence from top to bottom; a surface ring is connected below the rear cover, where several clamping blocks are arranged at an edge of the rear cover; the surface ring is provided with clamping slots corresponding to the clamping blocks; a connection terminal is connected above the rear cover; and symmetrically arranged springs are further connected above the rear cover.

Abstract: A conveniently-mounted split side-emitting small panel lamp belongs to the technical field of light-emitting diode (LED) lamps. The conveniently-mounted split side-emitting small panel lamp includes a rear cover; an inner wall of the rear cover is connected to a light source module; reflective paper, a light guide plate, and a diffusion plate are arranged inside the rear cover in sequence from top to bottom; a surface ring is connected below the rear cover, where several clamping blocks are arranged at an edge of the rear cover; the surface ring is provided with clamping slots corresponding to the clamping blocks; a connection terminal is connected above the rear cover; and symmetrically arranged springs are further connected above the rear cover.

Abstract: A split type rotatably removable and conveniently mountable butterfly down lamp includes a mounting seat and a lamp body; a mounting cavity arranged inside the mounting seat; a connecting sheet connected to an inner bottom of the mounting cavity, and the two sides of the connecting sheet of hollow structures; several limiting strips are connected to an inner wall of the mounting cavity; the lamp body includes a shell; a light source module is arranged inside the shell; the light source module includes an aluminum base plate; the aluminum base plate is provided with several lighting LEDs; a reflective cup is arranged above the light source module; a diffusion cover is arranged above the reflective cup; and fastening edges corresponding to the limiting strips are arranged at a circumference of the shell.

Abstract: A one-shot neural architecture search method referred to as MergeNAS by merging different types of convolutions into a single operation. This mergence approach reduces the search cost to roughly half a GPU-day as well as alleviates the over-fitting problem caused by a traditional differentiable architecture search (DARTS) approach by reducing the number of redundant parameters.

Abstract: A group of reductive 2D materials (R2D) with extended reactive vacancies and a method for making the R2D with extended reactive vacancies are provided, especially the example of the reductive boron nitride (RBN). To create defects such as vacancies, boron nitride (BN) powders are milled at cryogenic temperatures. Vacancies are produced by milling, and the vacancies can be used to reduce various metal nanostructures on RBN. Due to the thermal stability of the RBN and the enhanced catalytic performance of metal nanostructures, RBN-metals can be used for different catalysts, including electrochemical catalysts and high temperature catalysts.

Abstract: A one-shot neural architecture search method referred to as MergeNAS by merging different types of convolutions into a single operation. This mergence approach reduces the search cost to roughly half a GPU-day as well as alleviates the over-fitting problem caused by a traditional differentiable architecture search (DARTS) approach by reducing the number of redundant parameters.

Abstract: A group of reductive 2D materials (R2D) with extended reactive vacancies and a method for making the R2D with extended reactive vacancies are provided, especially the example of the reductive boron nitride (RBN). To create defects such as vacancies, boron nitride (BN) powders are milled at cryogenic temperatures. Vacancies are produced by milling, and the vacancies can be used to reduce various metal nanostructures on RBN. Due to the thermal stability of the RBN and the enhanced catalytic performance of metal nanostructures, RBN-metals can be used for different catalysts, including electrochemical catalysts and high temperature catalysts.

Abstract: A piezoelectric element has a diaphragm, a first electrode on the diaphragm, a piezoelectric layer on the first electrode, and a second electrode on the piezoelectric layer. The piezoelectric layer is a stack of multiple piezoelectric films and is made of a perovskite composite oxide containing lead, zirconium, and titanium and represented by the general formula ABO3, with the molar ratio of the A-site to the B-site (A/B) in the perovskite composite oxide being 1.14 or more and 1.22 or less. In current-time curve measurement, the activation energy calculated from relaxation current using an Arrhenius plot is 0.6 [eV] or less. The relaxation current is the amount of current at the time at which a downward trend in current turns upward.

Abstract: A piezoelectric element has a diaphragm, a first electrode on the diaphragm, a piezoelectric layer on the first electrode, and a second electrode on the piezoelectric layer. The piezoelectric layer is a stack of multiple piezoelectric films and is made of a perovskite composite oxide containing lead, zirconium, and titanium and represented by the general formula ABO3, with the molar ratio of the A-site to the B-site (A/B) in the perovskite composite oxide being 1.14 or more and 1.22 or less. In current-time curve measurement, the activation energy calculated from relaxation current using an Arrhenius plot is 0.6 [eV] or less. The relaxation current is the amount of current at the time at which a downward trend in current turns upward.

Abstract: A solar cell device includes an information display, a protective substrate that protects an information display surface of the information display, and a photoelectric conversion element. The photoelectric conversion element is disposed on a surface of the protective substrate. The surface faces the information display surface of the information display. The photoelectric conversion element includes a first electrode including a transparent electrode material, a second electrode including a transparent electrode material, a photoelectric conversion layer disposed between the first electrode and the second electrode and including an organic-inorganic perovskite compound, an electron transport layer, disposed between the first electrode and the photoelectric conversion layer, and a hole transport layer, disposed between the photoelectric conversion layer and the second electrode.

Abstract: A piezoelectric material is expressed as a mixed crystal including a first component formed of a complex oxide having a perovskite structure and a rhombohedral structure and containing Bi in an A-site and Fe in a B-site, a second component formed of a complex oxide having a perovskite structure and a tetragonal structure and containing Ba in an A-site and Ti in a B-site, and a third component formed of a complex oxide having a perovskite structure and a tetragonal structure and containing Bi and K in an A-site and Ti in a B-site.

Abstract: The invention relates to novel bimetallic and trimetallic catalysts, their manufacture and use in both steam reforming and oxidative steam reforming of liquid fuels such as jet fuels, diesel fuels and gasoline to produce synthesis gas and/or hydrogen for fuel cell applications. The invention further relates to manufacture of synthesis gas and/or hydrogen gas for chemicals synthesis and fuel processing. The catalysts have high sulfur tolerance and carbon resistance when used in steam reforming and/or oxidative steam reforming of heavy hydrocarbon fuels.