343 results about "Hydride" patented technology

The invention relates to the technical field of powder metallurgy materials, and discloses rare earth microalloyed ultrahigh-strength high-toughness hot work die steel and a preparation method thereof.The die steel is prepared from 4Cr5MoSiV1 pre-alloyed powder, rare earth hydride, boron carbide and porous amorphous carbon powder loaded with a nickel catalyst. The preparation method comprises the steps of material mixing, sheath packaging, graded dynamic reaction thermal devolatilization, hot isostatic pressing densification and heat treatment, in the graded dynamic reaction thermal devolatilization, active hydrogen generated by decomposition of rare earth hydride is used for reducing oxide on the surface of powder, and nickel catalyzed carbon powder is used for capturing water vapor at low temperature to generate CO to be discharged. An oxide film on the surface of the powder is thoroughly removed through in-situ chemical reaction, original particle boundaries are eliminated, meanwhile, a nano strengthening phase with high thermal stability is generated in situ, and the high-temperature strength, impact toughness and tissue compactness of the die steel are remarkably improved.

The invention relates to the technical field of hydrogen energy solid hydrogen storage, and discloses a metal hydride hydrogen storage tank and a circulating hydrogen charging and discharging method.The metal hydride hydrogen storage tank comprises a tank body, the top end of the tank body is communicated with a gas inlet pipe, and the bottom end of the gas inlet pipe extends into the tank body and is rotationally provided with a connecting pipe through a rotating connector; a plurality of circular heat dissipation fins are fixedly connected between the inner walls of the tank body, the bottom end of the connecting pipe penetrates through the heat dissipation fins to be rotationally connected with the bottom end of the tank body, and a plurality of air holes are formed in the surface of each heat dissipation fin; four telescopic rods are fixedly connected to the top wall of the interior of the tank body, the hydrogen storage tank drives the transmission assembly to drive the connecting pipe and the stirring plate to rotate through movement of the piston, metal hydride is prevented from caking, hydrogen is dispersed more evenly through inclined air outlet holes, and the hydrogen storage efficiency is improved; the circular heat dissipation fins are provided with air holes, so that heat dissipation is achieved, and circulation of hydrogen is not blocked.

The present application provides a solid-state hydrogen storage material and a preparation method and application thereof. Specifically, the preparation method comprises the following steps: (1) ball-milling a magnesium-based alloy powder, a light metal hydride, a nano-carbon material, a composite catalyst powder and an interface modifier to obtain a mixed powder; and (2) sintering the mixed powder under vacuum at 200-350 DEG C for 2-5 hours to obtain a sintered body, wherein: the magnesium-based alloy powder is a Mg-Mn-Al alloy powder; the light metal hydride is a mixture of LiAlH4 and NaBH4; the nano-carbon material is selected from one or more of graphene and carbon nanotubes; the composite catalyst powder is a mixture of TiO2, Fe3O4, CeO2 and La2O3; and the interface modifier is selected from one or more of a silane coupling agent and a titanate coupling agent. The solid-state hydrogen storage material has high hydrogen storage capacity, fast hydrogen absorption and desorption rate and good cycle stability.

The invention relates to the technical field of ferrous metallurgy and solid waste treatment, in particular to an efficient utilization production process of iron-containing ore powder and slag powder, which comprises the following steps: preheating the iron-containing ore powder ground by a grinder by a preheater, and feeding the iron-containing ore powder into a reduction furnace; a fan provides aerodynamic force, high-temperature gas obtained after air is preheated by a hot-blast stove and hydrocarbon such as pulverized coal sprayed from a pulverized coal feeding port are combusted, and generated reducing gas such as CO and H2 enters a reduction furnace through an annular exhaust outlet of a hearth and is subjected to a reduction reaction with iron-containing ore powder entering the reduction furnace and the high-temperature gas such as CO and H2 at high temperature; and reducing into metal iron powder and slag. Iron ore powder does not need to be made into prefabricated lump ores such as pellets and sinter, and dependence of a blast furnace on metallurgical coking coal is avoided; iron ore powder can be directly used for producing metal iron powder, water is saved, and the risk that high-temperature molten iron explodes when encountering water is eliminated; green hydrogen can be used as a reducing agent, and the method is a preferable scheme in the ferrous metallurgy industry.

A method of producing a chemical hydride is described and which includes selecting a composition having chemical bonds and which is capable of forming a chemical hydride; providing a source of a hydrocarbon; and reacting the composition with the source of the hydrocarbon to generate a chemical hydride.

The invention discloses a solid hydrogen storage and fuel cell energy coupling system and method, and belongs to the technical field of fuel cells, the system comprises a solid hydrogen storage module, a combustion cell, a hydrogen storage pipeline, a hydrogen delivery pipeline and a circulation pipeline, the hydrogen storage pipeline is used for inputting hydrogen into the solid hydrogen storage module, the hydrogen conveying pipeline is used for conveying hydrogen output by the solid hydrogen storage module to the fuel cell; the solid hydrogen storage module comprises a plurality of reactors, each reactor is of a double-layer structure composed of a first cavity and a second cavity, the first cavity is filled with a metal hydride bed and a heat exchange pipe penetrating through the metal hydride bed, and first heat exchange fins distributed in the metal hydride bed are installed on the heat exchange pipe; a phase-change material and spiral second heat exchange fins distributed in the phase-change material are arranged in the second cavity; each heat exchange pipe is connected into a circulating pipeline penetrating through the fuel cell, and a circulating medium circularly flowing in the circulating pipeline transfers heat generated by power generation of the fuel cell into the metal hydride bed to promote hydrogen release.

The invention provides metal-hydrogen modified porous carbon and a preparation method thereof, a silicon-carbon composite material and a preparation method thereof, and a battery, and the preparation method of the metal-hydrogen modified porous carbon comprises the following steps: mixing an aldehyde compound, a phenolic compound, a metal source and a catalyst, and carrying out heating treatment to prepare modified phenolic resin; carrying out carbonization treatment on the modified phenolic resin to prepare metal-doped porous carbon; mixing the metal-doped porous carbon with a metal hydride reducing agent, and performing reduction treatment to prepare metal-hydrogen modified porous carbon; wherein the mass ratio of metal elements to phenolic compounds in the metal source is (2-5): 100. A proper amount of metal-hydrogen bonds are introduced into the inner surface of a porous carbon pore structure; when the porous carbon is subsequently subjected to silicon deposition, low-temperature, uniform and confined deposition of nano silicon in a porous carbon matrix is facilitated, and the silicon-carbon composite material with low expansion rate and excellent electrochemical performance is prepared.

The invention discloses a hydrogen storage reactor based on synergistic heat management of a phase change material and a spiral heat exchange tube. The hydrogen storage reactor comprises an outer cylinder, a middle cylinder, an inner cylinder, a sealing cover and the spiral heat exchange tube. The outer cylinder, the middle cylinder and the inner cylinder divide the hydrogen storage reactor into three layers from inside to outside, and the inner layer and the outer layer are filled with phase change materials; the spiral heat exchange tube is arranged on the middle layer, and metal hydride is filled around the spiral heat exchange tube; in the hydrogen storage process, hydrogen flows into the middle layer of the reactor from an inlet in the center of the top end of the reactor and reacts with metal hydride; heat exchange fluid flows into the spiral heat exchange tube from a top inlet of the reactor, absorbs heat generated by reaction and flows out from a bottom outlet of the reactor; the phase change materials filled in the inner layer and the outer layer absorb heat generated by reaction and store the heat. The spiral heat exchange pipe is adopted for accelerating heat exchange, and the hydrogen storage and release rate is increased; the phase change material can store part of heat generated by the hydrogen storage reaction and release the heat during hydrogen release, the interlayer type arrangement can increase the heat exchange area, and the heat storage and release efficiency is improved.

The utility model provides a heat digestion reduction system for liquid chromatography and atomic fluorescence is used together, including heat digestion device, cooling device, sucking pump, gas -liquid separator, digestion agent container and reducing agent container. Heat digestion device includes digestion pipeline and heating device, and heating device is used for heating digestion pipeline. Cooling device includes heat dissipation board and cooling pipeline, and heat dissipation board installs on cooling pipeline and is used for heat dissipation to cooling pipeline. The utility model discloses compared with prior art in ultraviolet lamp digestion, and the higher stability of digestion efficiency is not needed to consider the risk of ultraviolet lamp breakage, and heating temperature will also reduce the memory effect in pipeline, improve hydride generation efficiency. Through setting up cooling device to the mixed liquid of measuring in pipeline after completing heating digestion is cooled, make the aerosol that generates because of heating digestion quick liquefaction, effectively reduce the system pressure in pipeline, avoid the risk of pipeline burst.

A curable composition for preparing a compressible silicone foam comprises: an alkenyl group-containing component comprising an alkenyl double-terminated polyorganosiloxane, an alkenyl substituted MQ polyorganosiloxane, and an alkenyl substituted copolymerized organosiloxane; and a hydrogen radical-containing component, wherein the hydrogen radical-containing component comprises a hydrogen radical-substituted polyorganosiloxane. The curable composition includes a curing catalyst; a filler composition; and a blowing agent. A compressible foam made from the curable composition and a method of making a compressible foam from the curable composition are also disclosed.

The invention belongs to the technical field of waste resource utilization, and particularly relates to a method for preparing crude arsenic by recycling arsenic-containing hydrogen gas. The method comprises the following steps: in an oxygen-isolated environment, introducing arsenic hydride-containing gas into a sulfuric acid aqueous solution with the mass fraction of 70%-98%, carrying out an oxidation-reduction reaction to obtain slurry containing crude arsenic, and carrying out solid-liquid separation to obtain a crude arsenic product. According to the method, the arsenic hydride gas can be directly converted into the arsenic elementary substance, so that the recovery of arsenic in the arsenic-containing material is realized. Concentrated sulfuric acid can fully oxidize arsenic hydride in a specific concentration range, and the arsenic hydride is prevented from being excessively oxidized into arsenic trioxide. Compared with other acidic or oxidizing solutions, the method has the advantages that the crude arsenic product with the purity larger than or equal to 95% can be directly obtained under the normal-temperature and normal-pressure conditions, the generated by-product dilute sulphuric acid can be circularly used for absorbing arsenic hydride again or used for leaching materials such as zinc arsenate-containing smoke dust to generate new arsenic hydride-containing gas, and therefore a closed-loop circulation process is formed; and efficient resource recovery and environment-friendly treatment are realized. The method is short in technological process, low in equipment requirement and small in energy consumption, the crude arsenic can be used as a precursor for preparing the high-purity arsenic, and a feasible scheme is provided for safety treatment and resource utilization of arsenic hydride in the industrial processes of metallurgy, wet refining and the like.

The invention relates to preparation and application of a metal hydride serving as a lithium ion battery negative electrode material. The lithium ion battery negative electrode material is obtained by mixing Ti3C2 and MgH2 serving as raw materials and then carrying out dehydrogenation-hydrogenation treatment. Compared with the prior art, the lithium ion negative electrode material provided by the invention is simple in preparation method, and the obtained product is high in purity, uniform in size distribution and good in electrochemical performance, and can be further applied to the fields of battery materials, supercapacitors and the like.

The invention discloses a vortex channel hydrogen storage reactor of a fluid streaming gradual change hydrogen storage tank unit, and belongs to the field of chemical reactor design. The whole reactor is a cylindrical shell, a heat exchange fluid inlet is formed in the center of the upper side of the shell, a hydrogen inlet is formed in a left end shell cover, and a heat exchange fluid outlet is formed in a right end shell cover; the heat exchange fluid channel is in a vortex shape, the multiple hydrogen storage tank units are sequentially arranged in the center of a flow channel of the vortex channel, and the diameter of the hydrogen storage tank is evenly reduced from the shell to the center position. Hydrogen enters the bed layer through a hydrogen pipe in the hydrogen storage tank and reacts with the metal hydride; meanwhile, the heat exchange fluid in the vortex channel flows around the hydrogen storage tank unit in the axial direction for heat exchange and then flows out through an outlet; the hydrogen storage tank has the advantages of excellent heat and mass transfer performance, uniform bed temperature of the hydrogen storage tank, small pressure-bearing stress of the tank body, synchronous reaction process of each hydrogen storage tank, high reliability and long service life, and is suitable for hydrogenation / dehydrogenation reaction of metal hydride with high hydrogen storage capacity requirement and larger reaction heat effect.

The application discloses an alkali metal hydride, a preparation method and application, and at least comprises the following steps: under a non-active atmosphere, ball milling raw materials containing alkali metal, an organic solvent and hydrogen to obtain the alkali metal hydride. The alkali metal hydride disclosed by the application has uniform particle size and wide application prospects in the fields of hydrogen storage, heat storage and catalytic synthesis; the preparation method is simple, suitable for large-scale and low-cost amplification, and has good development prospects and practical application value.

The invention discloses a preparation method of mesophase pitch regulated and controlled by plasma-assisted directional bromination and catalytic debromination, and belongs to the technical field of high-value utilization of heavy oil and preparation of advanced carbon materials. The method comprises the following steps: (1) by taking aromatic hydrocarbon-rich heavy oil as a raw material, carrying out low-temperature plasma-assisted liquid-phase bromination reaction, and directionally introducing bromine atoms on an aromatic ring as activation and orientation sites, so as to construct bromination modified linear precursor asphalt; (2) carrying out supported metal hydride catalytic debromination-directional polycondensation reaction to synchronously realize total removal of bromine atoms, linear coupling between aromatic rings and improvement of molecular planarity, so as to prepare pre-mesophase pitch; and (3) carrying out heat treatment in a strong and uniform magnetic field, and enabling the liquid crystal state molecules to be highly and orderly arranged along the direction of the magnetic field by virtue of the orientation effect of the magnetic field on the pi electron cloud, so as to finally form the spinnable mesophase pitch with a wide-area streamline structure. The method realizes full-chain accurate regulation and control from molecular structure design to macroscopic orientation, and the prepared mesophase pitch has the characteristics of high anisotropic content (greater than 98%), moderate softening point (260-300 DEG C), highly ordered molecular arrangement and low quinoline insoluble content (less than 0.1%). The process is novel, and a brand new path is provided for preparing the high-performance mesophase pitch.

The invention provides a structure for strengthening heat transfer in a metal hydride hydrogen storage reactor, and belongs to the technical field of solid hydrogen storage, the structure comprises a hydrogen storage reactor tank body, a hydrogen pipe and a spiral pipe are installed in the hydrogen storage reactor tank body, the spiral pipe comprises a central straight pipe, the central straight pipe is communicated with a spiral branch pipe, and the spiral branch pipe is communicated with the central straight pipe. N inner fins are uniformly distributed and mounted on the central straight pipe in the axial direction, M outer fins are uniformly distributed and mounted on the spiral branch pipes in the axial direction, the hydrogen storage reactor tank body is filled with hydrogen storage alloy, hydrogen enters the hydrogen storage reactor tank body through the hydrogen pipe, and heat exchange fluid enters the hydrogen storage reactor tank body through one end of the spiral pipe. The problems of low heat transfer efficiency caused by insufficient heat exchange area and reaction dynamic unbalance caused by uneven temperature distribution are solved, the heat exchange efficiency is improved through an integrated heat exchange structure, and sufficient heat exchange of heat exchange fluid in the hydrogen storage reactor is ensured by combining the spiral pipe and the inner and outer fins; the energy utilization rate of the heat exchange fluid and the hydrogen storage performance of the hydrogen storage reactor are improved.

The invention discloses a preparation method of high-purity Nb2O5, belongs to the field of preparation of Nb2O5, and solves the problem of low purity of Nb2O5 prepared by the existing method. The preparation method comprises the steps that a metal niobium ingot with the purity larger than or equal to 99.999% is adopted, and vacuum drying is conducted after surface peeling, dilute nitric acid ultrasonic cleaning and high-purity water flushing are conducted; the pretreated niobium ingot is subjected to a hydrogenation reaction in a pure hydrogen atmosphere, niobium hydride is generated and then crushed, and niobium hydride powder is obtained; carrying out dehydrogenation treatment on the niobium hydride powder under a high vacuum condition; dissolving the metal niobium powder with electronic-grade hydrofluoric acid, and filtering to obtain fluorine niobic acid filtrate; performing multi-stage counter-current extraction and reverse extraction on the fluobiobic acid filtrate by adopting an extracting agent to obtain fluobiobic acid reverse extraction liquid; introducing high-purity ammonia gas into the fluobiobic acid strip liquor, and precipitating to generate niobium hydroxide; ageing, filtering and washing with high-purity water for multiple times to obtain a niobium hydroxide filter cake; and calcining the niobium hydroxide filter cake in a high-purity oxygen atmosphere in stages to obtain niobium pentoxide. The niobium pentoxide prepared by the method disclosed by the invention is high in purity.

The invention discloses a method for detecting various arsenic forms in an environment through inductively coupled plasma mass spectrometry. The method comprises the following steps: collecting air in the environment, continuously pressurizing the air, and storing the air in a collecting gas tank as a gas sample for later use; introducing the collected gas sample into a reaction kettle filled with a hydrochloric acid solution, mixing, conveying to a first spiral homogeneous conveying device through a first conveying pump, and then conveying to a cyclone spraying chamber; conveying the reaction kettle filled with the sodium borohydride solution to a second spiral homogeneous conveying device through a second conveying pump, and then conveying the sodium borohydride solution to a cyclone spraying chamber; argon is introduced into the cyclone spray chamber, and the cyclone spray chamber is connected with an inductively coupled plasma mass spectrometer and connected with a third delivery pump to discharge wastewater to a wastewater tank; gaseous hydride generated by the cyclone spray chamber and argon are conveyed to an inductively coupled plasma mass spectrometer for quantitative analysis. The technical effect of the invention is that the arsenic content and existence form in the environment can be better and more accurately detected.

To provide a dehydrogenation catalyst for organic hydrides that can be produced at low cost while having high activity and high durability, and a method for producing a dehydrogenation catalyst for organic hydrides.SOLUTION: A dehydrogenation catalyst for organic hydrides includes a titanium oxide-containing carrier, a first support metal containing platinum supported by the carrier, and a second support substance containing selenium supported by the carrier. A method for producing a dehydrogenation catalyst for organic hydrides includes the steps of: causing a titanium oxide-containing carrier to support the first support metal containing platinum and; and causing the titanium oxide-containing carrier to support the second support substance containing selenium.SELECTED DRAWING: Figure 5

The invention belongs to the technical field of hydrogen storage materials, and particularly relates to a metal borohydride composite material, a preparation method thereof and a hydrogen storage material. The preparation method of the metal borohydride composite material comprises the following steps: preparing the boron-doped carbon-based carrier; the boron-doped carbon-based carrier is mixed with a metal source, a first boron source and a first solvent, hydrogen is added for a thermal reaction, metal borohydride is generated on the surface of the boron-doped carbon-based carrier in situ, and the metal borohydride composite material is obtained. According to the method, a boron-doped carbon-based carrier is prepared, boron and carbon in the boron-doped carbon-based carrier are inert elements, a chemically inert electron-deficient carrier is constructed, and metal cations in metal borohydride are induced to generate charge transfer to the carrier in the in-situ preparation process of the metal borohydride on the surface of the boron-doped carbon-based carrier. Molecular internal electron interaction of metal cations and borohydride anions is weakened, so that the thermodynamic stability of the metal borohydride is reduced.

This invention provides a resin that combines high refractive index, high heat resistance, and low birefringence. The cyclic olefin copolymer hydride of this invention is formed by hydrogenating a cyclic olefin copolymer, wherein the cyclic olefin copolymer comprises structural units from 1-naphthylnorbornene and structural units from 2-naphthylnorbornene, and the average internal bulk ratio of 1-naphthylnorbornene to 2-naphthylnorbornene is 50 mol% or more. The cyclic olefin copolymer hydride of this invention is preferably used as a material for optical components such as optical lenses.

The nickel-metal hydride storage battery box system comprises a storage battery box, an electric control box is arranged on one side of the storage battery box, a storage battery trolley is arranged in the storage battery box, idler wheels are arranged on the two sides of the storage battery trolley, a battery pack is arranged on the storage battery trolley, and a cantilever device is arranged in the storage battery box. The cantilever device comprises a main supporting track frame and an auxiliary supporting track frame, the main supporting track frame and the auxiliary supporting track frame are rotationally connected, when the auxiliary supporting track frame is unfolded, the auxiliary supporting track frame serves as a cantilever, the storage battery trolley can be conveniently pulled out, and after the auxiliary supporting track frame is folded, the storage battery trolley can be protected; according to the innovative cantilever device, when maintenance is needed, the unfolded auxiliary supporting track frame can serve as a stable cantilever, whole-course supporting and guiding are provided for drawing and pulling of the storage battery trolley, the storage battery trolley is effectively prevented from overturning or clamping stagnation, and operation is greatly facilitated.

The invention discloses a preparation method and application of a titanium-based hydrogen-resistant coating structure on the surface of a metal hydride, the coating structure is composed of a metal hydride matrix and a titanium-based hydrogen-resistant layer, and the titanium-based hydrogen-resistant layer covers the surface of the metal hydride matrix; the chemical composition of the titanium-based hydrogen-resistant layer is titanium nitride. The preparation method comprises the following steps: (1) sequentially carrying out polishing treatment, chemical cleaning and drying treatment on a metal hydride base material to obtain a metal hydride matrix; (2) putting the metal hydride base material into a magnetron sputtering coating chamber, vacuumizing, and introducing argon to perform etching cleaning; and (3) after etching cleaning is finished, magnetron sputtering is carried out with a titanium target as a sputtering target material and nitrogen as reaction gas, and the titanium-based hydrogen-resistant coating structure on the surface of the metal hydride is obtained. When the metal hydride is used as a nuclear material in the high-temperature working condition of the nuclear industry or hydrogen storage equipment, the problem of performance degradation of the metal hydride caused by hydrogen diffusion can be solved.

This organic hydride manufacturing device 2 comprises: a membrane electrode assembly 8 in which an anode electrode 10 and a cathode electrode 12 are stacked so as to sandwich a membrane 14; a cathode channel 38 that overlaps the membrane electrode assembly 8 when viewed from the direction in which the cathode electrode 12, the membrane 14, and the anode electrode 10 are stacked, the cathode channel 38 feeding / discharging a cathode liquid to / from the cathode electrode 12; and a support member 40 for supporting the membrane electrode assembly 8 so as to inhibit the membrane electrode assembly 8 from fitting into the cathode channel 38.

The application discloses a method for directly decomposing magnesium-based hydride by light driving. The method is realized by a photolysis device, and the photolysis device comprises a reaction container, a light source, a buffer container and a water container. The light source is arranged on the oblique upper side of the reaction container, so that the magnesium-based hydride in the reaction container is decomposed and releases hydrogen under the irradiation of the light source. A hydrogen outlet is arranged on one side of the reaction container. One end of the buffer container filled with water is connected with the hydrogen outlet, and the other end is connected with the water container. The generated hydrogen amount is calculated through the water container. The method specifically comprises the following steps: after solid-phase ball milling treatment of the magnesium-based hydride, the ball-milled magnesium-based hydride is loaded in the reaction container of the photolysis device, and reacts under the irradiation of the light source of the photolysis device to directly decompose and obtain hydrogen. The method has the advantages of higher hydrogen production, greenness and controllable reaction.

The invention belongs to the technical field of hydrogen storage materials, and particularly relates to a metal borohydride composite material, a preparation method thereof and a hydrogen storage material. The preparation method comprises the following steps: activating the carbon-based carrier by adopting an alkaline substance; performing gas-phase fluorination treatment on the activated carbon-based carrier; the carbon fluoride-based carrier is mixed with a metal source, a boron source and a solvent, a solvothermal reaction is driven by hydrogen, metal borohydride is synthesized in situ on the surface of the carbon fluoride-based carrier, metal atoms in the generated metal borohydride react with F atoms in the carbon fluoride-based carrier to form a metal-F bridging phase, and meanwhile, the metal borohydride generates metal vacancies. The metal affinity of fluorine in the carbon fluoride-based carrier is utilized to induce nucleation loading of the metal borohydride in the synthesis process of the metal borohydride, and meanwhile, an interface chemical reaction is carried out to generate vacancies and bridging phases. Vacancies weaken B-H bonds, the hydrogen absorption and desorption heat / dynamics of the material are improved, and the bridging phase improves the structural stability and hydrogen absorption and desorption cycle performance of the material.

The application discloses a method for driving metal hydride reversible hydrogen storage by light. The method comprises the following steps: (1) introducing non-active gas into a sealed transparent reactor containing metal hydride powder; (2) applying light to the reactor to remove hydrogen and obtain a dehydrogenation product; (3) hydrogenating the dehydrogenation product in a hydrogen atmosphere to obtain the metal hydride; wherein the metal hydride is selected from at least one of alkali metal hydride, alkaline earth metal hydride and rare earth metal hydride; and the valence of hydrogen in the metal hydride is -1. In the application, the metal hydride can be directly driven by light energy, has high reactivity, and can realize reversible dehydrogenation cycle at normal temperature by using specific hydride, so that the process is simple and suitable for large-scale production.

Compositions of matter and methods of identifying and making compositions of matter are disclosed. Some embodiments disclose making and chemically and / or compositionally tuning superconducting hydride materials. Some embodiments disclose an apparatus for making and compositionally tuning superconducting materials. Some embodiments disclose a composition of matter including a solid hydride exhibiting superconductivity at a temperature of at least 150 kelvin at an ambient pressure below 180 gigapascals, or at a temperature of at least 261 kelvin. In one or more embodiments, the superconductor includes a covalent metal hydride having at least three different chemical elements wherein an inter-atomic distance between the hydrogen in the covalent metal hydride is in a range of 1.1-2 angstroms. In yet further examples, the superconductor is formed using molecular exchange and compression of a Van der Waals solid. In yet further examples, the superconductor comprises molecular hydrogen disposed in 1-dimensional channels. These and other embodiments are disclosed herein.

The invention belongs to the technical field of nuclear reactor cores, and particularly relates to a fast thermal coupling metal hydride reactor core controlled by a rotating drum and a rotating drum control method, and the reactor core comprises the rotating drum, a reactor core active area, a coolant flow channel, a beryllium oxide reflecting layer and a thermal insulation shielding layer; the coolant flow channel is composed of a coolant flow channel inner barrel and a coolant flow channel outer barrel; the reactor core active area is wrapped by the coolant flow channel inner barrel, and oxide fuel rods and metal hydride fuel rods are arranged in the reactor core active area; the beryllium oxide reflecting layer is arranged on the coolant flow channel outer barrel in a sleeving manner, and the heat preservation shielding layer is arranged on the beryllium oxide reflecting layer in a sleeving manner; a plurality of rotating drums are arranged between the beryllium oxide reflecting layer and the heat preservation shielding layer in the circumferential direction. The oxide fuel rods and the metal hydride fuel rods are arranged in the reactor core active area at the same time, so that the fast thermal coupling design of a reactor core neutron energy spectrum is realized, and the reactivity control value of the rotating drum is improved.

The application discloses a kind of based on nano microcrystalline metal powder and organic liquid hydride multi-medium composite slurry hydrogen storage material and its preparation method, and multi-medium composite slurry hydrogen storage material includes nano microcrystalline metal powder for hydrolysis heat production, hydrogen release endothermic organic liquid hydride and catalyst;Nano microcrystalline metal powder content is 1~40wt.%, and organic liquid hydride content is 50~95wt.%, and the content of catalyst is 1~25wt.%.The application combines the advantages of metal powder and organic liquid hydride, by covering metal powder in organic liquid hydride, on the one hand, the passivation problem of metal powder surface is solved, effectively isolates metal powder and air contact, prevents the formation of oxide;On the other hand, the heat generated by the reaction of metal and water is absorbed by organic liquid hydride, thereby improving the mass transfer efficiency, and reducing the energy loss in heat transfer process.