270 results about "Hydrogen isotope" patented technology

The invention provides a low-temperature displacement chromatography hydrogen isotope separation device and a method. The invention makes the mixed gas of hydrogen isotope gas and helium after being cooled sequentially pass through a cooled main separation column and a cooled product gas collecting column which are filled with granulate palladium-loaded aluminum trioxide (Al2O3/Pd) to obtain the product gas rich in heavy isotope components of deuterium and tritium; a hot helium flow passes through and heats the main separation column so as to make the released gas sequentially pass through the cooled secondary separation column and the product gas collecting column which are filled with granulate palladium-loaded aluminum trioxide (Al2O3/Pd) to obtain the product gas rich in heavy isotopecomponents of deuterium and tritium; after the product gas is collected, middle rich gas flowing out from the secondary separation column is directly fed back into a raw material gas tank; and after the middle rich gas feedback process is accomplished, the main separation column and the secondary separation column are heated, and the gas released by heating is collected via a tail gas collecting column. The separation device has simple structure, reasonable separation process, and low cost for the construction and operation of the device. The invention has higher separation factor for hydrogen isotope separation.

The invention relates to an quantitative determination method of the isotope of hydrogen, hydrogen deuteride and hydrogen deuterium, which comprises using neon gas to be carrier gas, leading a gas chromatograph to adopt a double-strut double-temperature system, choosing 50 DEG C sampling temperature, sampling through an injector or a gas sampling valve, and the sampling quantity is 0.1-2.2mL, sample gas which is separated by a gas-chromatography column generates electrical signals through a detector, recording the pear areas of hydrogen, hydrogen deuteride and deuterium gas of chromatogram peaks through a chromatogram working station after the electrical signals are magnified through a front magnifier, adopting a volume correction factor normalization method or an external standard method to measure the content of hydrogen (H2), hydrogen deuteride (HD) and deuterium (D2), and getting detection results. The invention has the advantages of excellent separation effect of hydrogen isotope and high detection sensitivity, the detection of the pureness of deuterium gas can reach more than 99.99%, hydrogen deuteride (HD) and deuterium (D2) are sampled in big dosage, the peaks are not overlapped, thereby guaranteeing the quantitative detection of high-purity deuterium gas, and standard gas is not needed to be prepared in the process of detecting. The method simplifies the operation process, which is convenient for on-line detection of deuterium gas in the process of producing.

A system and method for tritium separation systems using a mixed bed catalytic exchange process in a Liquid Phase Catalytic Exchange/Closed Loop Continuous Process (LPCE/CLCP) system, that operates as a low temperature and low pressure continuous balanced process, designed to rapidly, economically and safely extract and isolate isotope specific products without generating unwanted products in the form of new waste streams.

The present invention relates to a resonant vacuum arc discharge apparatus for producing nuclear fusion. A resonant high-frequency high-voltage alternating current (AC) power supply is used to efficiently power a fusion tube normally containing deuterium, tritium and/or helium-3 vapor. Metals that can hold large amounts of hydrogen isotopes such as palladium and titanium can be used to increase the target density. The nuclear fusion device can be used for energy production, well logging, uranium mining, neutron activation analysis, isotope production or other applications that require a neutron source.

The present invention provides methods of structure prediction and/or determination of a protein of interest of unknown structure. Invention methods compare calculated rates of amide hydrogen exchange for a set of predicted possible structures for said protein with experimental hydrogen exchange analysis of said protein to identify valid protein structures based on similarities between hydrogen exchange profiles. In preferred methods, hydrogen exchange analysis is performed by determining the quantity of isotope and/or rate of exchange of peptide amide hydrogen(s) with isotope on a labeled protein, by generating a population of sequence-overlapping endopeptidase fragments of a protein labeled with a hydrogen isotope other than ¹H under conditions of slowed hydrogen exchange, and then deconvoluting fragmentation data acquired from said population of sequence-overlapping endopeptidase-generated fragments.

The invention relates to a method for measuring the hydrogen isotope ratio of ethanol in grape wine and belongs to the technical field of stable isotope analysis. The method comprises the steps that (1) hydrogen isotope is used for forming a known to-be-tested water treatment sample; (2) acetone is used for diluting a fermentation ethanol sample treated by water, and the mixture is mixed for use; (3) a liquid sample injection needle is used for sample injection, and gas chromatography equipped with a molecular sieve capillary chromatographic column is used for separating ethanol, acetone, water and other hydrogen compounds; (4) an on-line cracking device is used for converting ethanol into hydrogen; (5) CF-IMRS is used for measuring the hydrogen delta D produced by the ethanol; (6) correction computation of delta DSMOW of sample ethanol is performed according to the delta D measured value of an ethanol isotopic reference material. According to the method for measuring the hydrogen isotope ratio of ethanol in grape wine, GC-TC-IRMS is used for measuring the hydrogen isotopic compositions of the fermentation ethanol, and the technical difficulty of series of pretreatment of ethanol purification before measurement of fermentation ethanol hydrogen isotope in the past is solved; advance of the ethanol hydrogen isotope measurement technology can be promoted, and a technical method is provided for source identification of fermentation ethanol, sugar mixing detection of a plant source product and study of metabolic pathways in future.

The invention discloses a Myrica rubra original place tracing method based on stable isotope ratio and multi-element. The method comprises: collecting and pre-processing Myrica rubra samples from different places; subjecting the samples to analysis of the stable carbon, the nitrogen isotope ratio, the stable oxygen, the hydrogen isotope ratio and the multi-element; for the data of the Myrica rubra samples from known areas, using the mode featuring the combination of the PCA method and the LDA method to analyze the data obtained from the Myrica rubra samples from known areas; establishing an original place tracing model to judge the original place of the samples; and using the data obtained from the Myrica rubra samples from unknown areas to be inputted into the original place tracing model to make the analysis and judgment so as to obtain the original place tracing for the Myrica rubra samples from unknown areas. For the first time, the invention adopts the technology featuring the combination of the principal component analysis with the linear judgment to establish a Myrica rubra original place tracing method.

An apparatus and method for a beam target fusion neutron generator comprising a closed cycle flow generator having a continuous liquid phase flowing stream liquid target containing hydrogen isotopes where said stream has a continuously refreshed exposed surface and where said liquid target is high vacuum compatible at cryogenic temperatures; and an ion beam generator adapted to produce an ion beam and focused to direct said beam to bombard said flowing stream liquid target. The flowing stream liquid target can be a thin film curtain and said closed cycle flow generator can be a cryogenic liquid handling system having a heat exchanger adapted to maintain said liquid target at cryogenic temperatures and having a collection reservoir position to capture use target material for recycling.

The invention discloses an online analysis pretreatment device for trace hydrogen isotopes in natural gas. The device comprises a sample chamber, a six-way valve, an absorption cold trap, a preenrichment cold trap and an enrichment cold trap, wherein the sample chamber is connected with the absorption cold trap, the absorption cold trap is connected with the six-way valve, two ends of the preenrichment cold trap are respectively connected with the six-way valve, one end of the enrichment cold trap is connected with the six-way valve, and the other end of the enrichment cold trap is connected with a chromatographic column, and the six-way valve is respectively connected with a helium pressure regulating valve B and a gas circuit release valve D; an inlet and an outlet of the sample chamber are respectively provided with a gas circuit release valve; and a gas circuit release valve is arranged between the absorption cold trap and the six-way valve. The device disclosed by the invention can be used for realizing the online enrichment of a trace hydrogen component in a natural gas sample, separating the trace hydrogen component from other gas components so as to detect the hydrogen isotopes.

The invention discloses an enrichment separation method of hydrogen isotopes through displacement chromatography. The enrichment separation method comprises the following steps: (1) reducing the temperature: making a molecular sieve column into a spiral coil, loading a container with liquid nitrogen, wholly immersing the molecular sieve column into the liquid nitrogen, and enabling the temperature of a molecular sieve to be maintained to be the temperature of the liquid nitrogen; (2) performing adsorption: enabling hydrogen to be introduced into the molecular sieve column, measuring the quantity of the hydrogen introduced into the molecular sieve, and after the gas pressure in the molecular sieve reaches to a definite pressure, stopping introducing the hydrogen; (3) performing warming for separation: upwards lifting the spiral molecular sieve column, so that the molecular sieve column is separated from the liquid surface of the liquid nitrogen, heating the molecular sieve column with air, and controlling the speed of the molecular sieve column being lifted out of the liquid surface of the liquid nitrogen to be 0.5-5 cm/min; and (4) performing detection and collection: oxidizing hydrogen into liquid water through an oxyhydrogen compositor at a rear end for the hydrogen discharged from the molecular sieve column, and then detecting the deuterium abundance in the liquid water through a magnetic mass spectrometer. According to the enrichment separation method of tritium through displacement chromatography disclosed by the invention, changes in the controlled process of reducing the temperature and raising the temperature have continuity, the hydrogen isotope separation efficiency is extremely high, and the separation effects are good.

The invention relates to the water treatment technical field, in particular to a preparing method and application of an ultra light water, wherein sulfureted hydrogen two-temperature exchange method or other alternative methods are adopted to produce ultra light water; sulfureted hydrogen two-temperature exchange method realizes separation of hydrogen isotopes through adopting multistage concatenation of cooling tower and thermal tower by use of isotope exchange reaction between sulfureted hydrogen and water; liquid raw material water enters from the top of the cooling tower and flows through the cooling tower and the thermal tower from above to below, while gas material sulfureted hydrogen is added from the part between the cooling tower and the thermal tower and circulates inside the cooling tower and the thermal tower from bottom to top inside; heavy components inside the cooling tower is transferred towards liquid phase through chemical exchange so as to be concentrated inside the liquid phase; liquid material with concentrated the heavy components completes chemical exchange with ascending gas during flowing through the thermal tower, thereby, the heavy components are transferred towards gas phase; finally, finished product with lower content of heavy hydrogen can be obtained after liquid phase material discharged from the thermal tower enters into a degassing column to removing sulfureted hydrogen. The invention has the health effects such as delaying aging, radiation resisting, resisting cell mutation, activating immunocyte, improving basal metabolism level of human body, improving sleep, enhancing physical function of male, beauty and body slimming.

A method for producing Ac-225 is presented, wherein Ac-225 is produced by bombardment of Th-232 with hydrogen isotope nuclei accelerated in a cyclotron. The method, which allows production of Ac-225 at high yields and purity levels, is particularly interesting for the supply or Ac-225 or of the daughter Bi-213 for medical applications.

The invention relates to a hydrogen isotope storage and supply technology, and discloses a hydrogen isotope storage alloy with high cycling stability and a preparation method thereof. The chemical general formula of the hydrogen isotope storage alloy is ZrCo1-xCux, wherein x is greater than or equal to 0.1 and less than or equal to 0.3. The invention further discloses a preparation method of a hydrogen isotope storage alloy ingot and a thin strip. The hydrogen isotope storage alloy has the advantages that a hydrogen storage alloy has relatively high cycling stability capacity and relatively good cycling stability dynamics, the cycle life of the hydrogen storage alloy is prolonged, the hydrogen storage platform characteristics and thermodynamic characteristics are changed, and a new hydridephase ZrCoHx (x is about 0.6) with a positive cross crystal system CrB-type crystal structure is generated; in addition, the preparation method of the hydrogen isotope storage alloy is simple in process and low in cost, and is especially suitable for storing and material supplying of an ITER hydrogen isotope.

The invention relates to a gas sample introduction device. The gas sample introduction device can perform two or more different volume sample introduction successively, has the characteristics of accurate quantification, simple operation, continuous operation, no dead volume, convenient connection with detection system, and matching use with an automatic sample injector, and realizes automated analysis of batch gas samples. By applying the variable volume sample introduction technology provided by the invention to analysis of carbon-hydrogen isotopes in natural gas, the requirements for determining the isotope ratio of different concentration component (carbon dioxide, methane, ethane, propane, isobutane, n-butane) of hydrogen and carbon can be satisfied, the signal response of all stratographic components in an isotope mass spectrometer is within a dynamic varying range and is close to working standard signal intensity as far as possible, thereby avoiding multiple injection of isotope analysis, facilitating laboratory isotope analysis work, and improving the work efficiency of sample test.

The invention discloses a method for separating hydrogen isotope in the manner of palladium replacement. The method comprises the following steps: 1) cooling, namely soaking a raw material column and a palladium replacement separating column into liquid nitrogen and cooling to liquid nitrogen temperature, wherein the raw material column and the palladium replacement separating column are arranged as stainless steel pipes which are connected with each other and are communicated with each other and thus hydrogen is conveniently introduced into the columns and can flow and separate therein; 2) adsorbing hydrogen, namely introducing hydrogen into the raw material column, and adsorbing hydrogen till completing adsorption at low temperature; 3) separating at low temperature, namely separating the raw material column and the palladium replacement separating column from liquid hydrogen, thereby avoiding the corresponding low-temperature treatment; 4) transferring to the separating column, namely heating the raw material column for naturally separating hydrogen therein and guiding the separated hydrogen into the palladium replacement separating column; 5) replacing, separating and collecting, namely heating the palladium replacement separating column in the same manner, collecting gas flowing out from the separating column in segments, and analyzing gas composition for confirming a separation coefficient.

The invention discloses a displacement chromatography hydrogen isotope separation device which comprises a rack as well as a cooling part, a separation column, an air supply part, an air collection part, a lifting part and a driving part. By adopting the displacement chromatography hydrogen isotope separation device disclosed by the invention, different adsorption functions that hydrogen and hydrogen isotope are replaced and separated by using a separation material can be achieved, the lifting part is driven by the driving part to precisely control the lifting position of the separation column, and then the separation column can be descended or lifted off the cooling part, so that adsorption or desorption of hydrogen isotope by the separation material under different temperature conditions can be achieved, a high retention rate of deuterium-tritium isotope in the separation material can be ensured, and a deuterium-tritium isotope gas obtained through final separation and selection is relatively high in purity; compared with the prior art, the device needs no parts for introducing deuterium or separating deuterium, meanwhile deuterium and tritium do not need to be replaced by introducing hydrogen after the separation material is in saturation adsorption of hydrogen, and in addition, the device is simple in structure, low in energy consumption rate, simple in process and low in cost.

The present invention discloses a hydrogen isotope efficient recovery apparatus based on catalysis reaction and membrane separation cascade connection, and a recovery method thereof. In the prior art, when the existing membrane reactor performs hydrogen isotope recovery, the more impurity gases in the raw materials can cause the reduced hydrogen permeation rate of the palladium-based membrane, and the optimal use temperature and the catalysis reaction rate are difficult to concurrently achieve. A purpose of the present invention is to solve the problems in the prior art. The apparatus comprises a raw material gas, a fixed bed reactor, a palladium membrane hydrogen separation device, a gas storage tank, a booster pump and the like. According to the present invention, the catalysis reaction and membrane separation non-in-situ integrated mode is used so as to effectively improve the utilization rate of the palladium membrane, reduce the poisoning effect of the impurity gas on the palladium membrane, prolong the service life of the palladium membrane, and effectively improve the recovery rate of the hydrogen isotope; the closed loop can formed so as to obtain the high hydrogen isotope recovery efficiency; and the apparatus and the method of the present invention have characteristics of reasonable design, strong adaptability and high recovery rate, can meet the hydrogen isotope recovery requirements, and provides important significance for achievement of the fusion reactor deuterium-tritium fuel circulation and improvement of the economy and the security of the reactor.

The invention relates to a yak meat production place tracing method based on multiple elements and stable isotopes. The method comprises the steps of (1), collecting a yak meat sample and carrying outpreprocessing to obtain a defatted yak meat sample; (2), detecting a stable carbon isotope abundance ratio, a stable hydrogen isotope abundance ratio, and a mineral element Ti content in the defattedyak meat sample; (3), carrying out computing to obtain a stable carbon isotope ratio delta<13>C%o and a stable hydrogen isotope ratio delta<2>H%o according to the stable carbon isotope abundance ratio and the stable hydrogen isotope abundance ratio; and (4), substituting the stable carbon isotope ratio delta<13>C%o, the stable hydrogen isotope ratio delta<2>H%o and the mineral element Ti contentinto a judgment model, and judging a production place of the yak meat sample according to a computing result. The method is simple and convenient and is high in operability. Influence of external environment factors on yak meat production place tracing accuracy is effectively reduced. The yak meat production place tracing accuracy can be improved. The method is characterized by speediness, economyand practicality.

The present invention provides a hydrogen isotope analysis method of a light hydrocarbon monomer hydrocarbon in natural gas and a light hydrocarbon enrichment apparatus. The apparatus comprises a natural gas sample cylinder, a light hydrocarbon collection bottle, a water removal purification pipe, a light hydrocarbon enrichment tube and a temperature control box; the natural gas sample cylinder and the water removal purification pipe are in communication, a connecting pipe of the natural gas sample cylinder and the water removal purification pipe is provided with a gas-pressure meter and a first needle valve; the water removal purification pipe is in communication with one end of the light hydrocarbon enrichment tube, a connecting pipe of the water removal purification pipe and the light hydrocarbon enrichment tube is provided with a tee joint, and the tee joint is in communication with the light hydrocarbon collection bottle; the other end of the light hydrocarbon enrichment tube and a gas flowmeter are in communication, a connecting pipe of the light hydrocarbon enrichment tube and the gas flowmeter is provided with a second needle valve; the other end of the light hydrocarbon enrichment tube is provided with a third needle valve; and the temperature control box is arranged outside the light hydrocarbon enrichment tube. The hydrogen isotope analysis method of the light hydrocarbon monomer hydrocarbon in the natural gas is completed by use of the light hydrocarbon enrichment apparatus. The hydrogen isotope analysis method of the light hydrocarbon monomer hydrocarbon in the natural gas and the light hydrocarbon enrichment apparatus have the advantages of simple structure, easy and fast operation, high analysis data accuracy and good repeatability.

The invention relates to a gas-chromatography filler capable of separating and analyzing hydrogen isotopes and a preparation method of the gas-chromatography filler and belongs to the technical field of functional materials. The material takes gamma-Al2O3 as a carrier. The synthesis method comprises the steps of loading a metal-organic skeleton compound to the surface of the gamma-Al2O3, carrying out washing and drying, and then, dipping the gamma-Al2O3 in an aqueous solution of a transition metal salt MXn, thereby obtaining a loaded type composite material. The gas-chromatography fixed-phase material is applied to the separation of hydrogen isotopes H2/D2, the separation effect is good, the quantitative analysis is accurate, and the material can be repeatedly used and is low in price; due to good mechanical properties, the recovery and reuse are very convenient.

The invention includes a semiconductor construction. The construction has a semiconductor material die with a front surface, a back surface in opposing relation to the front surface, and a thickness of less than 400 microns between the front and back surfaces. The construction also has circuitry associated with the die and over the front surface of the die, and a layer touching the back surface of the die. The layer can correspond to getter-inducing material and/or to a stress-inducing material. The layer can have a composition which includes silicon dioxide and/or silicon nitride. The composition can include one or more hydrogen isotopes, and the hydrogen isotopes can have a higher abundance of deuterium than the natural abundance of deuterium.

There is disclosed a method of generating energetic particles, which comprises contacting nanotubes with a source of hydrogen isotopes, such as D₂O, and applying activation energy to the nanotubes. In one embodiment, the hydrogen isotopes comprises protium, deuterium, tritium, and combinations thereof. There is also disclosed a method of transmuting matter that is based on the increased likelihood of nuclei interaction for atoms confined in the limited dimensions of a nanotube structure, which generates energetic particles sufficient to transmute matter and exposing matter to be transmuted to these particles.

The invention belongs to the field of oil gas geochemistry, and in particular to a device and method capable of separating hydrogen and methane in a mixed gas and measuring a hydrogen isotope. The device comprises a gas sample inlet, a drying unit, a hydrogen adsorption separation unit, a quantifying loop, a vacuum unit and an isotope measuring unit; and the gas sample inlet, the drying unit, thehydrogen adsorption separation unit, the quantifying loop and the isotope measuring unit are sequentially connected in series; the hydrogen adsorption separation unit can release adsorbed hydrogen tomeasure the hydrogen isotope, so that the methane and hydrogen in the mixed gas are separated, the separated hydrogen and methane are used for measure of the hydrogen isotopes respectively, and measure of the hydrogen isotope of the hydrogen and the hydrogen isotope of the methane in the hydrogen-methane mixed gas is realized; and the vacuum degree of the whole system is high, deviation caused bymutual interference between a hydrogen peak and a methane peak in the prior art is overcome, and accuracy of an analytical test is improved.

The invention discloses a shale gas occurrence transformation and isotope response simulation device. The device comprises a saturation-desorption tank, a chromatography-isotope mass spectrometry analysis system and a sample collecting and feeding mechanism; the saturation-desorption tank is used for performing gas high-pressure saturation on a rock core and performing desorption on the rock corewhich has been subjected to the high-pressure saturation; the chromatography-isotope mass spectrometry system is used for monitoring the changes of carbon isotopes or hydrogen isotopes in real time; and the sample collecting and feeding mechanism is used for collecting post-rock core desorption gas and feeding the post-rock core desorption gas into the chromatography-isotope mass spectrometry analysis system. The shale gas occurrence transformation and isotope response simulation device is used for a shale core gas high-pressure saturation-desorption experiment. With the shale gas occurrence transformation and isotope response simulation device adopted, the output process of shale gas in a laboratory can be simulated; the changes of carbon isotopes or hydrogen isotopes can be monitored inreal time; and basic data and theoretical support are provided for tracing the development state of a shale gas well and predicting productivity.

The invention discloses a novel Tepotinib derivative and a preparation method thereof and an application of the derivative in an antitumor drug. According to the invention, a chiral structure is introduced in molecules, a hydrogen isotope deuterium is introduced in an easily metabolical part in the molecules, and atoms of sulfur, selenium and sulfoxide or groups are introduced in the molecules. The antineoplastic active experiments (having c-Met-expressed tumor cells) on a cell level proves that the compound has excellent antineoplastic activity, and the stability of the antineoplastic compound is obviously increased.