171 results about "Hydrogen" patented technology

The invention discloses a method for preparing a single-layer tungsten diselenide nanoband based on a space confinement strategy. By changing the flow and the growth time of hydrogen, effective control on the width and the thickness of a nanoband can be realized. The method comprises the following steps: uniformly spraying tungsten trioxide powder to one substrate, then covering the substrate by the other substrate, and forming micro reaction space which is of a 'sandwich'-like structure. Growth of a tungsten diselenide nanoband is carried out by utilizing a constant-pressure chemical vapor deposition method; physicochemical characteristics of a one-dimensional transition metal chalcogenide strongly depend on suspension key types on the edge of the one-dimensional transition metal chalcogenide, metallic properties are displayed by an ultranarrow band, and conversion from the metallic properties to semiconductor properties can be displayed from the edge to the center of a wider band; the tungsten diselenide nanoband is widely applied to micro-nano photoelectric devices due to the special property; industrial production of the tungsten diselenide nanoband can be realized through an experimental method of the invention.

The invention discloses a rare-earth metal arylamine group compound as well as preparation method and application thereof. The invention discloses the rare-earth metal arylamine group compound which is characterized in that a general formula of the rare-earth metal arylamine group compound is (2,6-R12PhNH)5LnLi2(THF)2, wherein Ln is a rear-earth metal selected from one of neodymium, samarium, ytterbium or yttrium; R1 is selected from one of hydrogen, methyl or isopropyl. The rare-earth metal arylamine group compound has the advantages that the rare-earth metal arylamine group compound has a definite structure; raw materials used in the preparation method are simple, easily obtained and cheap; the reaction process is simple and easily operated; the rare-earth metal arylamine group compound product is conveniently purified and the yield of the product is high; the rare-earth metal arylamine group compound has a high activity when acting as a single component catalyst to catalyze a hydrogen phosphine reaction of aldehyde or ketone and phosphite ester; the use amount of the catalyst is less; the yield is high; a substrate has wide universality; a new and simple method is provided for synthesis of a-hydroxyphosphonate.

Disclosed is a liquid crystal composition. The liquid crystal composition includes liquid crystal molecules including at least one of a liquid crystal compound having an alkenyl group and a liquid crystal compound having an alkoxy group, and a first stabilizer including a compound having a structure represented by Formula 1:where n is 0 or 1; m is 0 or 1; k is 0 or 1; Z1, Z2, and Z3 are each independently a single bond, —C═C—, —OCO—, —COO—, —CF2O—, or a C1 to C5 alkylene group; X1, X2, X3, and X4 are each independently hydrogen or halogen; Y is hydrogen, an alkylene group, an alkoxy group, a hydroxyl group, —NHCOCH3, or ═O; and A and B are cyclic compounds.

The embodiment of the invention provides a hydrogen purity detection method and device, equipment and a storage medium. Comprising the steps that sample gas and to-be-detected hydrogen are obtained, a Wheatstone bridge circuit is constructed based on the sample gas and the to-be-detected hydrogen, and the circuit comprises two fixed resistors and two thermistors; applying heat to the thermistor, and obtaining a resistance change value of the thermistor and a circuit output end detection value; and detecting the purity of the to-be-detected hydrogen according to the resistance change value and the detection value. The hydrogen purity is detected by constructing the Wheatstone bridge circuit and utilizing the thermal response difference of the thermistor to the sample gas and the hydrogen to be detected, and tiny resistance change can be captured, so that the detection precision and accuracy are improved. Based on a stable circuit principle and accurate resistance measurement, interference of external factors is reduced, and a detection result is more reliable. A resistance change value and a circuit output end detection value can be rapidly obtained, real-time detection of the purity of hydrogen to be detected is achieved, and a detection result is provided in time.

Systems and methods for measuring the content of an element in a soil comprises: a neutron source for irradiating the soil with neutrons; a detector assembly configured to detect an INS gamma spectrum of the soil; an instrument for measuring a moisture content of the soil; and a processor in communication with the detector assembly, the processor configured to: apply a moisture calibration coefficient to calculate a net peak area of a characteristic peak of the element in the INS gamma spectrum, the moisture calibration coefficient calculated to account for the moderation of fast neutrons by hydrogen atoms of water present in the irradiated soil at the location under analysis; and generate a concentration of the element in the soil. The instrument for measuring a moisture content of the soil may comprise the detector assembly. Systems and methods incorporating a temperature-controlled housing for the gamma detector assembly are also provided.

The mineralogical, chemical, magnetic, and physical properties of a rock can be used to determine the amount of hydrogen that was generated during rock alteration and the remaining amount of hydrogen generation potential. The methodologies evaluate the hydrogen generation potential of geological samples and identify natural hydrogen source rocks. The mineralogy, elemental composition, iron content and oxidation state, and other properties of a geological sample may be determined. From the determined mineralogy and other properties of the geological sample, the amount of hydrogen which the geological sample may have generated may be quantified. This method can determine the maturity of hydrogen source rocks, the potential volume of hydrogen that can be generated in other parts of a given geologic province with higher degrees of hydrogen source rock maturity, and quantify the potential remaining volume of hydrogen that can be still be generated via secondary enhanced hydrogen stimulation processes.

The invention provides a detection method of a monomer nitrogen-hydrogen-chlorine multidimensional stable isotope of chloroaniline and a monitoring method of chloroaniline, and relates to the technical field of isotope detection. According to the method, a gas phase-double oxidation tube-stable isotope ratio mass spectrum is adopted to detect and calculate a nitrogen stable isotope ratio in chloroaniline, and a gas phase-chromium filler cracking tube-stable isotope ratio mass spectrum is adopted to detect and calculate a hydrogen stable isotope ratio; the gas phase-multi-collector inductively coupled plasma mass spectrometry is adopted to detect and calculate the chlorine stable isotope ratio, so that the determination of the multi-element stable isotope ratio of nitrogen, hydrogen and chlorine in o-chloroaniline, m-chloroaniline and parachloroaniline is realized, the detection degree is more comprehensive, and the detection result is accurate, efficient and reliable. The range of each isotope signal value in the detection process is controlled, and high accuracy of the detection result can be ensured. The detection method provided by the invention provides a new method and means for deep research and monitoring of chloroaniline traceability, degradation mechanism and environmental homing.

Techniques are described for producing actinium-225 by arranging a converter material at least partially around a target material, where the target material includes radium-226. The converter material comprises a compound of lithium and hydrogen at least partially enriched with lithium-6 and deuterium, and is configured to convert thermal neutrons to fast neutrons, which are then incident on the radium-226. If the fast neutrons have a kinetic energy of at least 6.4 MeV, they will initiate a (n,2n) reaction that converts radium-226 into radium-225, which then decays into actinium-225. The process can desirably be performed within an environment rich in thermal neutrons, such as within a fission reactor.

Methods for generating and extracting geologic hydrogen, the method comprising: applying a current to a subterranean formation to generate hydrogen; and extracting the hydrogen from the subterranean formation.

A method of producing hydrogen from ammonia includes exposing ammonia to a rare-earth / NiO / Al2O3 nanocomposite material. The rare-earth / NiO / Al2O3 nanocomposite material catalyzes the decomposition of ammonia into hydrogen. The rare-earth / NiO / Al2O3nanocomposite material is in the form of rare-earth doped NiO nanoparticles distributed on a Al2O3 matrix. The rare-earth doped NiO nanoparticles include a rare-earth dopant selected from the group consisting of La, Ce, Nd, Sm and combinations thereof, at a concentration of 1 to 20 wt. % based on the total weight of the rare-earth / NiO / Al2O3 nanocomposite material. The rare-earth doped NiO nanoparticles are spherical with an average diameter in a range from 1 to 200 nm. The rare-earth / NiO / Al2O3 nanocomposite material achieves a 90% or greater conversion of ammonia to hydrogen, based on the total amount of ammonia, at a temperature less than or equal to 550° C., when used to catalyze the decomposition of ammonia.

The invention discloses a rare bismuth II type superlattice material and a preparation method thereof. The superlattice material has an InAs (Bi) / GaSb or InAs (Bi) / InAsSb superlattice structure formed by alternately laminating InAs (Bi) layers and GaSb layers or InAsSb layers, and the InAs (Bi) layers are formed by introducing Bi elements into the InAs layers. The preparation method of the superlattice material comprises the following steps: (1) selecting an InSb, InAs or GaSb substrate, performing thermal cleaning on the substrate at 500 DEG C, and cleaning the substrate by using atomic hydrogen in an ultrahigh vacuum environment; (2) alternately laminating InAs (Bi) layers and GaSb layers or InAsSb layers by utilizing a molecular beam epitaxial growth technology, and finally growing a GaSb layer or InAsSb layer as a stop layer, (3) carrying out rapid thermal annealing treatment at the temperature of 380-420 DEG C; the time is 0.5 to 1 min; and (4) characterizing the photoluminescence property of the superlattice. According to the invention, the strain distribution and the energy band structure of the material are obviously improved, the more flexible wavelength regulation and control capability is realized, the hole effective quality is reduced, and the carrier mobility and the quantum efficiency are improved.

To solve the problem that muon is supplemented to a generated substance after nuclear fusion, not to a nuclear fusion fuel substance, and muon catalyzed fusion reaction is unlikely to proceed because in a well-known muon-catalyzed fusion, muon is adhered to / captured / trapped by helium to be a generated substance after nuclear fusion, not to a fusion fuel substance such as hydrogen / heavy hydrogen D / tritium T, and catalyzed fusion reaction stops; and to propose a system which is unlikely to generate a neutron.SOLUTION: When nuclear fusion of an atomic nucleus occurs in muon catalyzed fusion, electric charges of atomic nucleus of a substance generated by nuclear fusion is used for a nuclear fusion reaction system which has a feature smaller than electric charges of an atomic nucleus of an atom to become nuclear fusion fuel. To be specific, a muon catalyzed fusion system using borohydride (diborane or the like) including proton as well as boron for nuclear fusion fuel is proposed.SELECTED DRAWING: Figure 8

The present invention discloses a quantitative calculation method for the hydrogen and oxygen isotopes in surface water during the evaporation fractionation process in the field of isotope tracing technology, aiming to solve the problems of low calculation accuracy and large uncertainty in the existing calculation methods. It includes: analyzing the kinetic effect of the evaporation fractionation process; constructing the probability mass function of the isotope body and decomposing the ratio of the heavy / light isotope body; quantitatively describing the dissipation rate of the heavy / light isotope body in the evaporation fractionation; combining the water evaporation rate to obtain the change efficiency of the heavy / light isotope body during the evaporation fractionation process; and calculating the isotope body content in the remaining surface water. The present invention enhances the application adaptability of the calculation method to various conventional and extreme situations, reveals the isotope fractionation change law in surface water during the evaporation process, and improves the reliability of the results.

The application discloses a method and device for obtaining local gas temperature and equivalence ratio of a combustion field. Laser-induced breakdown spectroscopy technology is used to form a target plasma by laser-induced breakdown of a flame to be measured. Firstly, reference signals of the target plasma are collected to obtain a reference signal set, and current hydrogen atomic spectral line broadening and current plasma temperature of the target plasma are calculated. Then, the reference signals are input into a gas temperature characterization model to obtain a local gas temperature. The reference signals and spectral line intensities are input into a spectral line intensity correction model to obtain a corrected spectral line intensity set. Finally, the corrected spectral line intensity set, the current plasma temperature and the current hydrogen atomic spectral line broadening are input into an equivalence ratio measurement model to obtain the equivalence ratio of the flame to be measured. Through step-by-step correction of spectral intensity, the application can avoid the influence of temperature on equivalence ratio measurement, improve the accuracy of equivalence ratio measurement, and realize local gas temperature measurement.

The invention discloses a mercury method detection device for deposited metal diffusible hydrogen, relates to the technical field of diffusible hydrogen detection, and aims to solve the problem that the detection efficiency, the operation convenience and the safety are difficult to guarantee by adopting a mercury method in the prior art. The device comprises a detection mechanism, a sample collecting and placing mechanism, a vacuum mechanism, a mercury storage mechanism, a control end and a sealed ventilation cabinet, the detection mechanism is used for collecting and detecting diffusible hydrogen; the sample receiving and placing mechanism is used for realizing automatic operation of sample taking and placing, lifting and positioning; the vacuum mechanism is used for providing a vacuum environment for diffusible hydrogen collection; and the mercury storage mechanism is used for storing, conveying and recycling mercury. The method has the advantages that the detection efficiency, the operation convenience and the safety are improved.

A system including a material is described. The material includes at least one rare earth (R), hydrogen (H), and at least one dopant (D). The material includes R, H, and D with R:H:D in a ratio of 1:x:y, where x is greater than 2 and less than 3, and y is at least 0.4 and less than 1.

A method of deploying a pulsed neutron logging tool. The method may comprise detecting natural gamma rays from the subterranean formation via one or more detectors of the pulsed neutron logging tool, broadcasting neutrons into the subterranean formation, and detecting neutron-induced gamma rays and natural gamma rays from the subterranean formation. The method may further comprise creating an inelastic spectrum, a capture spectrum, or a capture time decay from the natural gamma rays or the neutron-induced gamma rays, forming an inelastic yields, a capture elemental yields, or a formation sigma form the inelastic spectrum, the capture spectrum, or the capture time decay, creating a closure model from the inelastic yields and / or capture elemental yields and / or a formation sigma, and identifying a porosity, a mineral weight fraction, or a quality figure of merit from the closure model that quantifies geologic hydrogen reservoir quality.

The application discloses a method for evaluating the producing rate of shale oil in different occurrence states in a two-dimensional nuclear magnetic osmosis process, which comprises the following steps: using nuclear magnetic resonance to analyze unsaturated oil, saturated oil and experimental shale samples after osmosis, inverting the obtained relaxation time nuclear magnetic data to obtain a nuclear magnetic spectrum, dividing the nuclear magnetic spectrum into free oil area and adsorbed mutual solubility oil area according to the hydrogen signal of oil in the nuclear magnetic spectrum, and calculating the peak area of the free oil area and the adsorbed mutual solubility oil area; the producing rate of free oil and the producing rate of adsorbed mutual solubility oil in the experimental shale sample can be obtained by calculating the area change of the free oil hydrogen signal peak and the adsorbed mutual solubility oil hydrogen signal peak of the experimental shale sample before and after different osmosis time. The experimental method is simple and accurate, can quantitatively evaluate the producing rate of free oil and adsorbed mutual solubility oil in shale, and provides important parameters and basis for numerical simulation of an oil reservoir and actual development.

Provided are 3-nitro-1,2,4-triazole-5-one-d2 and a preparation method and use thereof. Compared with 3-nitro-1,2,4-triazole-5-one, the 3-nitro-1,2,4-triazole-5-one-d2 provided by the disclosure has an increased molecular relative molar mass, which leads to the increase in crystal density. By substituting hydrogen atoms with deuterium atoms, it is possible to avoid the influence of hydrogen atoms on neutron diffraction signal-to-noise ratio. Compared with carbon-hydrogen bond, carbon-deuterium bond has lower zero point energy, lower vibration frequency and more stability, allowing 3-nitro-1,2,4-triazole-5-one-d2 to have high density, excellent detonation performance, high detonation velocity, high stability, low thermal sensitivity, low friction sensitivity and low impact sensitivity.

The invention relates to a device (2) for detecting hydrogen, in particular small amounts of hydrogen, in a liquid circuit (3) and for removing the hydrogen, in particular the small amounts of hydrogen, from the liquid circuit (3). According to the invention, the device (2) is characterized by - a platinum plate (4) which is arranged or can be arranged in the liquid circuit (3), and - a temperature sensor (6) designed and configured to measure the temperature of the platinum plate (4).

The utility model discloses a storage tank for deuterium isotope abundance detection, which comprises a tank body and a cover body, and two horizontal sides of the cover body are fixedly connected with support frames. The method comprises the following steps: putting a magnesium rod into a tank body from a magnesium rod putting opening, sealing, vacuumizing, injecting a water sample into a reaction container, heating the tank body, enabling the magnesium rod to react with the water sample to generate deuterium-labeled hydrogen, and sucking the deuterium-labeled hydrogen in the tank body after the reaction container is cooled to room temperature. The cover body and the tank body are both fixed with the support frame while normal detection of the deuterium isotope abundance is ensured, and the base at the bottom of the support frame is matched with the upper suction cup, so that stable connection between the storage tank and a working table can be ensured, deviation of the storage tank is avoided, and the storage tank is convenient to use. Therefore, the use stability of the storage tank for deuterium gas isotope abundance detection is improved.

The application discloses a rapid detection method of paraffin in beeswax. The detection method comprises the following steps: dissolving the to-be-detected beeswax sample by using a deuterium solvent to perform nuclear magnetic resonance hydrogen spectrum test, and qualitatively and quantitatively analyzing the paraffin in the beeswax according to the nuclear magnetic resonance hydrogen spectrum result. Two conditions need to be met simultaneously when using the nuclear magnetic hydrogen spectrum to judge whether the paraffin is doped in the beeswax: (1) an ester characteristic proton peak appears near the chemical shift of 4.07 ppm; and (2) the relative integral intensity of the alkyl proton peak in the chemical shift range of 0.9-1.58 ppm is obviously enhanced compared with a standard spectrum. The detection method is simple and rapid, has good linear relationship, high accuracy and good repeatability.

The invention relates to an atomic gas chamber and a preparation method thereof. The preparation method of the atomic gas chamber comprises the following steps: providing an atomic gas chamber glass bulb; rubidium steam is filled in the atomic gas chamber glass bulb; the atomic gas chamber glass bulb is filled with mixed gas; wherein the mixed gas comprises xenon 129, xenon 131, hydrogen and a buffer gas; the voltage division ratio of the xenon 129 to the xenon 131 is (1: 4)-(1: 9); carrying out heat preservation treatment on the atomic gas chamber glass bulb, and reacting rubidium steam with hydrogen to generate a rubidium hydride film layer; and the rubidium hydride film layer covers the inner wall of the atomic gas chamber glass bulb. According to the preparation method of the atomic gas chamber, provided by the invention, the atomic spin relaxation time of xenon 129 and xenon 131 can be prolonged, the relaxation performance of two isotopes can be balanced, the performance of the atomic gas chamber is further improved, and the requirements of application scenes such as a quantum inertia instrument on the atomic spin stability of the atomic gas chamber are met.

The application discloses a kind of based on pulse neutron technology's borehole in-situ lithium ore content measurement method and device, device includes pulse neutron generator, neutron detector, gamma detector and electronic processing equipment, measurement method includes: obtaining the time spectrum information of borehole in-situ place detection neutron, according to time spectrum information, neutron lifetime is calculated;According to the formation of different lithium ore grade under the macroscopic cross section of neutron lifetime calculation;According to the relationship equation of formation macroscopic cross section and lithium content, based on the calculation of formation macroscopic cross section, obtains scale lithium content;The calibration curve of lithium content is scaled based on the distribution of formation macroscopic cross section and scaled calculation, and the actual lithium ore grade distribution of formation is obtained.According to the change of time spectrum attenuation under different borehole size, wellbore correction equation is established, and the influence of wellbore is corrected.According to gamma energy spectrum, the content of hydrogen in water-containing wellbore is monitored, and the influence of water-containing wellbore is corrected according to hydrogen characteristic peak count.

The invention provides a hydrogen-doped natural gas leakage detection method, device and system based on holographic interference, and the method comprises the steps: obtaining a first initial light beam and a second initial light beam, controlling the first initial light beam to pass through a reference region, so as to obtain a first target light beam, and controlling the second initial light beam to pass through the detection area to obtain a second target light beam, forming detection interference fringes based on the first target light beam and the second target light beam, and determining a hydrogen-doped natural gas leakage detection result of the detection area according to the detection interference fringes. By implementing the method disclosed by the invention, the detection interference fringes capable of accurately indicating the gas characteristic information in the detection area can be obtained based on the holographic interference technology, so that the hydrogen-doped natural gas leakage detection result can be quickly and accurately obtained based on the detection interference fringes, and the hydrogen-doped natural gas leakage detection effect is effectively improved.

The invention discloses a Pd / alpha-Ga2O3 sensor for high-sensitivity hydrogen detection as well as a preparation method and application of the Pd / alpha-Ga2O3 sensor, an alpha-Ga2O3 layer is deposited on a c-plane sapphire substrate by adopting a fog chemical vapor deposition method, Sn ions with a certain concentration are doped, and then an MSM structure with Schottky contact is prepared for high-sensitivity detection of hydrogen. The result shows that the fluorescent probe has high sensitivity at the detection temperature of 5-60 DEG C, and the response value of the fluorescent probe to 104ppm hydrogen at 25 DEG C reaches 89 at most.

This invention discloses a system and method for monitoring the hydrogen damage state of metals, comprising: a hydrogen charging device for electrochemically charging a plate-shaped sample of the same metal as the target metal that has not undergone hydrogen damage; a hydrogen permeation measuring device for converting hydrogen atoms permeating into the sample into hydrogen ions during the hydrogen charging process and measuring the current generated by the free electrons produced during the conversion process in real time to obtain a hydrogen permeation curve; and an ultrasonic measuring device for emitting ultrasonic guided waves to the sample during the hydrogen charging process and receiving the nonlinear response signal generated by the guided waves exciting ultrasonic waves inside the sample, and then performing cepstral analysis on the received signal to obtain the nonlinear coefficients at different time periods. Based on this, combined with the hydrogen permeation curve, the correlation between the nonlinear response signal and the degree of hydrogen damage is determined, and then the nonlinear response signal of the target metal is substituted into the correlation to obtain the hydrogen damage state inside the metal. This invention can monitor and evaluate the degree of hydrogen damage inside metals in real time.

This application discloses a control method, device, and storage medium for an online material moisture monitoring system, relating to the field of material moisture monitoring technology. The method includes: starting a neutron generator assembly; when the start-up time of the neutron generator assembly is greater than or equal to a preset preheating time, activating a neutron detector assembly and a gamma detector; determining the cumulative scattered neutron share of the measured material based on the detection results of the neutron detector assembly, and obtaining the cumulative scattered neutron share to match the corresponding target hydrogen density from a preset correlation library; generating a gamma spectrum based on the gamma rays monitored by the gamma detector according to pulse amplitude classification and counting, and extracting the water hydrogen characteristic peak area from the gamma spectrum; determining the solidified hydrogen ratio based on the target hydrogen density, the water hydrogen characteristic peak area, and the energy spectrum calibration coefficient of the gamma spectrum; and determining the free water content of the measured material based on the solidified hydrogen ratio. This application solves the problem of low accuracy in moisture monitoring through dual-modal collaborative detection.

The mineralogical, chemical, magnetic, and physical properties of a rock can be used to determine the amount of hydrogen that was generated during rock alteration and the remaining amount of hydrogen generation potential. The methodologies evaluate the hydrogen generation potential of geological samples and identify natural hydrogen source rocks. The mineralogy, elemental composition, iron content and oxidation state, and other properties of a geological sample may be determined. From the determined mineralogy and other properties of the geological sample, the amount of hydrogen which the geological sample may have generated may be quantified. This method can determine the maturity of hydrogen source rocks, the potential volume of hydrogen that can be generated in other parts of a given geologic province with higher degrees of hydrogen source rock maturity, and quantify the potential remaining volume of hydrogen that can be still be generated via secondary enhanced hydrogen stimulation processes.