99 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.

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.

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.

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.

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 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 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.

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.

To provide a metal evaporation method in which rare metal can be easily recovered.SOLUTION: A metal evaporation method evaporates at least a part of metal composition by heating, in a non-contact manner in the same container, a metal composition containing rare metal elements and a perovskite-type complex oxide expressed by Formula (1): ABHaO3-b (1) (where A denotes one or more kinds of elements selected from a group consisting of lanthanoid element and elements of group 2 in the periodic table, B denotes one or more kinds of elements selected from a group consisting of elements of group 3 in the periodic table, elements of group 4 in the periodic table and transition metal element of a fourth period of the element periodic table, symbols a and b are amounts of hydrogen and oxygen vacancy, respectively, and represent numerical values in the following range: 0≤a≤1.0, 0≤b≤0.5).SELECTED DRAWING: None

The application discloses a refinery gas composition determination method and related device, and relates to the field of gas analysis. The absolute correction factor of nitrogen and the relative correction factor corresponding to each stable gas are determined, and the absolute correction factor of the stable gas with relatively stable content in air is determined. Similarly, the absolute correction factor of each alkane is determined according to the absolute correction factor of methane and the relative correction factor of each alkane relative to methane, and the absolute correction factor of hydrogen is determined according to the content of hydrogen in the production sample containing hydrogen and the chromatographic peak area of hydrogen, wherein the chromatographic peak area of hydrogen is obtained by processing the production sample by a thermal conductivity detector. The determination of the absolute correction factor of each gas component is realized, and on the basis, the concentration of each component in the sample can be determined by combining the detection of the chromatographic peak area of each component of the refinery gas sample, thereby providing a reliable reference for subsequent resource utilization.

The invention discloses a natural hydrogen formation cause identification method based on cluster isotope, which comprises the following steps: obtaining a purified hydrogen sample to be detected through separation and purification treatment; performing cluster isotope measurement on the purified hydrogen sample to obtain a cluster isotope value representing the abundance deviation random distribution degree of the dideuterium molecules; when it is judged that the cluster isotope value is in the original thermodynamic equilibrium state, the formation temperature of the purified hydrogen sample is inverted according to the theoretical function relation between the cluster isotope value and the thermodynamic equilibrium temperature; and comparing the formation temperature with a pre-established formation temperature range of different cause types of natural hydrogen, and determining the cause type of the purified hydrogen sample. According to the method, the cluster isotope delta DD is introduced as an anti-interference core index, and multi-source information verification and temperature quantitative inversion are combined, so that a fundamental breakthrough of the natural hydrogen cause from qualitative speculation to accurate quantitative judgment is realized.

The invention discloses a method for identifying the producing area of saffron crocus by extracting saffron crocus aldehyde and measuring the stable isotope ratio of the saffron crocus aldehyde. The invention discloses a method for extracting crocetin from saffron crocus and measuring the stable isotope ratio of carbon to hydrogen to oxygen. The method comprises the following steps: S1, determining the stable isotope ratio of carbon to hydrogen to oxygen of a crocetin standard substance by using an elemental analysis-stable isotope mass spectrometer; s2, extracting crocus sativus aldehyde from the crocus sativus sample to obtain a crocus sativus aldehyde extracting solution; s3, determining the carbon, hydrogen and oxygen stable isotope ratio of crocetin in the crocetin extracting solution by using a gas chromatography-stable isotope mass spectrometer; and S4, calibrating the carbon, hydrogen and oxygen stable isotope ratio of crocetin in the crocetin extracting solution by adopting the carbon, hydrogen and oxygen stable isotope ratio of the crocetin standard substance. The standard substance is used for calibrating the stable isotope ratio of carbon, hydrogen and oxygen of the single compound crocetin, and the method can be used for identifying the producing area of crocetin.

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.

A device for evaluating uranium content and hydrogen porosity while drilling includes a probe having a pulsed neutron generator for emitting a pulse of neutrons, a single neutron detector, a neutron counting unit for measuring over time a number of neutrons backscattered from hydrogen nuclei and a number of prompt fission neutrons resulting from interactions with uranium nuclei. The device also includes a hydrogen porosity evaluation unit for evaluating the hydrogen porosity using a total number of backscattered neutrons and a uranium evaluation unit for evaluating the uranium content using a total number of prompt fission neutrons.

The invention relates to a method for determining at least one physical quantity of a flowing gas (22), in particular flowing hydrogen, wherein the method comprises the following steps: - Receiving data representing the intensity (Φ) of Raman scattered light (34) resulting from the inelastic interaction of the flowing gas (22) with laser light (31); - Receiving data representing the absolute pressure (p) of the flowing gas (22); - Determining at least one physical quantity of the flowing gas (22) based on the intensity (Φ) of the Raman scattered light (34) and the absolute pressure (p) of the flowing gas (22). The invention also relates to an evaluation unit (60) for this method, a measuring device (80), a filling station (10) and a method for refueling a vehicle (11) with gas (22), in particular with hydrogen.

The present invention describes a petrophysical modeling method that integrates well nuclear spectroscopy data and interpretations with some input petrophysical parameters, decomposing the hydrogen and chlorine signals into their specific origins, such as well drilling fluid, kerogen, water, and hydrocarbons in the pores. The model consists of a set of equations that are solved sequentially with input values defined by Monte Carlo simulation, from which properties such as salinity, porosity, density, sigma, and hydrogen index of the kerogen are calculated. The acceptability of such results is verified by comparison with logs such as density, porosity by NMR, and macroscopic cross section of thermal neutron capture.

The invention belongs to the technical field of deuteration rate detection, and particularly relates to a low-deuteration water deuteration rate detection method, which comprises: 1) preparing a heavy water standard sample with a known deuteration rate, carrying out a nuclear magnetic hydrogen spectrum test, and recording the water peak area; (2) estimating the deuteration rate of the deuterium-depleted water sample to be detected, then mixing a proper amount of the deuterium-depleted water sample with a proper amount of the heavy water standard sample, and preparing a mixed heavy water sample with the estimated deuteration rate of 98% or above; (3) carrying out nuclear magnetic hydrogen spectrum test on the mixed heavy water sample, recording the water peak area, and calculating the deuteration rate by using the water peak area according to an external standard method; and (4) calculating the deuteration rate of the deuterium-depleted water sample. The detection method overcomes the defect that a nuclear magnetic resonance hydrogen spectrum method cannot accurately measure the deuterium-depleted heavy water (deuteration rate lt; the deuterium content in a high range (more than or equal to 98%) is difficult to detect, the limitation that an external standard method can only detect the isotope abundance (more than or equal to 98%) of deuterium in a relatively high range is broken through, and meanwhile, the method is high in analysis precision and accuracy, low in equipment investment, simple and convenient to operate and low in analysis cost.