96 results about "Hydrogen carrier" patented technology

The invention discloses a continuous hydrogenation reaction system for a liquid organic hydrogen storage carrier and a hydrogenation reaction method. The system comprises a feeding system, preheaters, static bed reaction stills and separation devices. The feeding system is communicated with inlets of the preheaters through pipelines. Outlets of the preheaters are communicated with inlets of the static bed reaction stills through pipelines. Outlets of the static bed reaction stills are communicated with inlets of the separation devices through pipelines. The static bed reaction stills are filled with hydrogenation catalysts and inert materials. The interiors of the reaction stills are kept at the constant temperature through circulation heat conduction media in interlayers of the surfaces of the static bed reaction stills. According to the continuous hydrogenation reaction system, the single-tube type static bed reaction stills are mainly adopted, the single-tube type static bed reaction stills are filled with the hydrogenation catalysts and the inert materials, heat tracing and heating control systems are arranged in all the pipelines in the liquid feeding system to be used for conducting temperature-control heating on liquid flowing through the system, a plurality of sets of gas quality and flow controller systems are designed in the system, the preheaters in the system are designed to be gas-liquid blending type preheaters, and the hydrogenation effect of the liquid hydrogen storage carrier is improved beneficially.

Conducting and superconducting doped, magnesium boride materials are formed by a process which combines physical vapor deposition with chemical vapor deposition by physically generating magnesium vapor in a deposition chamber and introducing a boron containing precursor and a dopant into the chamber which combines with the magnesium vapor to form the material. Embodiments include forming carbon-doped magnesium diboride film and powder with hybrid physical-chemical vapor deposition (HPCVD) by adding a carbon-containing metalorganic magnesium precursor, bis(methylcyclopentadienyl)magnesium, with a hydrogen carrier gas together with a borane precursor in a chamber having a source of magnesium vapor.

Apparatus and methods are provided for fuelling a hydrogen-powered vehicle directly with a solid-state particulate carrier material those functions as a reversible hydrogen carrier. The material is delivered to the vehicle from a filling station via pneumatic transfer in a carrier fluid. Such as a hydrogen gas or an inert gas. Following removal of hydrogen from the carrier material to form an at least partially dehydrogenated carrier, a second re-fuelling mode of operation removed the hydrogen-depleted carrier from the vehicle's fuel storage vessel and pneumatically transfers it back to the filling station, where it can be subsequently rehydrogenated.

The present invention discloses a liquid-state hydrogen source material hydrogen supply reaction system based on a hydrogen fuel cell. The system comprises: a storage tank for storing a liquid-state hydrogen source material and a liquid-state hydrogen storage carrier, a reaction kettle for dehydrogenation of the liquid-state hydrogen source material, a buffer tank for storing hydrogen, a heating device for heating the reaction kettle, and a hydrogen fuel cell, wherein the liquid-state hydrogen source material is pumped into the reaction kettle through a pump, the liquid-state hydrogen storage carrier after the dehydrogenation reaction is conveyed to the storage tank, the hydrogen generated through the liquid-state hydrogen source material dehydrogenation reaction is conveyed to the buffer tank through the reaction kettle, and the hydrogen in the buffer tank is conveyed into the hydrogen fuel cell. According to the present invention, the normal temperature and normal pressure liquid-state hydrogen source material dehydrogenation reaction system based on the fuel cell is provided, and the integrated technology for combining the hydrogen released through the dehydrogenation reaction of the normal temperature and normal pressure liquid-state hydrogen source material under the mild condition and the hydrogen fuel cell is firstly provided.

Disclosed herein is a hydrogen storage material comprising a metal hydride and an organic hydrogen carrier. Also disclosed herein is a hydrogen storage/fuel cell system which employs the hydrogen storage material.

A gas chromatograph uses hydrogen carrier gas supplied by a hydrogen source. At least one hydrogen sensor monitors the hydrogen level. The gas chromatograph communicates with the hydrogen source over a communication link. When the sensed hydrogen level exceeds a threshold, the gas chromatograph signals the hydrogen source to stop the flow of hydrogen.

The present invention includes a first step of forming a nitride semiconductor layer by metal organic chemical vapor deposition by using a first carrier gas containing a nitrogen carrier gas and a hydrogen carrier gas of a flow quantity larger than that of the nitrogen carrier gas to thereby supply a raw material containing Mg and a Group V raw material containing N, and a second step of lowering a temperature by using a second carrier gas to which a material containing N is added, and hence solves the problems.

The invention discloses a hydrogen supply system for a liquid hydrogen source material for a hydrogen internal combustion engine. The hydrogen supply system comprises a hydrogen storage tank used for storing the liquid hydrogen source material and a liquid hydrogen storage carrier, a reaction kettle used for dehydrogenating the liquid hydrogen source material, a buffering tank used for storing hydrogen, an oxygen storage tank used for storing oxygen, a heat exchange device used for transmitting heat generated by the hydrogen internal combustion engine to the reaction kettle, and a hydrogen storage device which is used for conveying the liquid hydrogen source material into the reaction kettle through a pump. The dehydrogenation reaction of the liquid hydrogen source material is conducted in the reaction kettle; hydrogen generated through the reaction is conveyed to the buffering tank; meanwhile, the liquid oxygen storage carrier generated after dehydrogenation is conveyed back to the hydrogen storage tank; the hydrogen in the buffering tank and the oxygen in the oxygen storage tank enter the hydrogen internal combustion engine according to a proportion. According to the dehydrogenation device for the normal-temperature and normal-pressure liquid hydrogen source material for a hydrogen internal combustion engine automobile, a hydrogen storage and hydrogen internal combustion engine integrated technology for enabling the hydrogen released by liquid hydrogen source material dehydrogenation at the normal temperature and the normal pressure to directly enter a hydrogen internal combustion engine system is put forwards for the first time, according to the technology, a common car can run for 500 kilometers with the hydrogen generated by 80 L of an organic carrier, and therefore the cost for large-scale utilization of hydrogen energy in the future is greatly reduced.

The invention discloses a liquid hydrogen source material dehydrogenation reaction system and an application method thereof. The dehydrogenation system comprises a storage device used for storing a liquid hydrogen source material and a liquid hydrogen-storage carrier, a reaction kettle used for dehydrogenating the liquid hydrogen source material, a buffering tank used for storing hydrogen gas, and a heating device arranged outside the reaction kettle and used for heating the reaction kettle. According to the invention, the liquid hydrogen source material is delivered into the reaction kettle through a pump; the liquid hydrogen source material is dehydrogenated in the reaction kettle; produced hydrogen gas is delivered to the buffering tank; and residual liquid hydrogen-storage carrier is delivered back to the hydrogen storage tank. The normal-temperature normal-pressure liquid hydrogen source material dehydrogenation system provided by the invention is used for carrying out a dehydrogenation reaction upon the liquid hydrogen source material. The produced hydrogen gas is supplied for a fuel cell or an internal combustion engine. The hydrogen gas is converted into electrical energy or mechanical energy which can be applied in various industrial and civil fields such as automobiles, electrical power, energy storage, chemical engineering, pharmacy, and mobile devices.

The invention discloses a method for preparing acetophenone by bionic catalytic oxidation of ethylbenzene, which comprises the following steps: by using ethylbenzene as a raw material, metal phthalocyanine or metalloporphyrin compound as a catalyst and oxygen gas as an oxygen source, adding certain amounts of solvent and hydrogen carrier, and carrying out catalytic oxidation reaction at 50-150 DEG C under the reaction pressure of 0.2-2.0 MPa to obtain the acetophenone. The method has the advantages of mild reaction conditions, favorable catalytic effect, high acetophenone selectivity, simple technique and the like.

The present disclosure provides methods of making confined nanocatalysts within mesoporous materials (MPMs). The methods utilize solid state growth of nanocrystalline metal organic frameworks (MOFs) followed by controlled transformation to generate nanocatalysts in situ within the mesoporous material. The disclosure also provides applications of the nanocatalysts to a wide variety of fields including, but not limited to, liquid organic hydrogen carriers, synthetic liquid fuel preparation, and nitrogen fixation.

The invention discloses an epitaxial production method capable of effectively improving P-GaN hole injection layer quality. The epitaxial production method capable of effectively improving the P-GaN hole injection layer quality includes the step of sequentially growing a low temperature GaN buffer layer, an unintentional doped GaN layer, an n type electron injection layer, a multiple quantum well active area, a p-GaN hole injection layer and a p type heavy doped contact layer on a substrate, wherein the P-GaN hole injection layer is grown in alternate type nitrogen and hydrogen carrier gas switching environment, doping of magnesium atoms is performed in nitrogen environment, and activation energy of the magnesium atoms is reduced in hydrogen environment. The P-GaN hole injection layer grown in the alternate type carrier gas switching environment can effectively improve efficiency of merging the magnesium atoms into GaN crystal lattices, improves quality of the GaN crystal lattices, reduces work voltage and improves antistatic ability. Simultaneously, activation efficiency of the magnesium atoms is improved, a large quantity of hole carriers are provided, and luminance of LED (light emitting diode) devices is improved by reducing the activation energy of the magnesium atoms.

The present invention relates to light nanometer composite hydrogen storage material, which comprises Mg and multi-wall nanometer carbon tube (MWNTs) and the composition expression is Mg/(x-wt%)MWNTs, here 0<xíœ50. The Mg nanometer crystal is hydrogenated to form large quantity of hydrogenation phase MgH2 of nanometer structure and catalysis phase of multi-wall nanometer carbon tube debris. These three phases tightly connect to each other, forming uniform dispersion distribution. The preparation method is: Mg powder is mixed with multi-wall nanometer carbon tube and then ball-ground in hydrogen atmosphere to undertake catalysis reaction. The method combines the preparation, activation and hydrogenation of composite material in one process. The invention has the advantages of high power of the storage and release of hydrogen, high velocity of the absorption and release of hydrogen, moderate operation temperature, low weight, low production cost, abound resources and safety in storage and transportation. It can be used for the mass production, storage and transportation of hydrogen, the hydrogen carrier of fuel cell, the purge and purification of hydrogen, and organic hydrogenation engineering.

A method and apparatus are provided for use in producing high-pressure hydrogen from natural gas, methanol, ethanol, or other fossil fuel-derived and renewable hydrocarbon resources. The process can produce hydrogen at pressures ranging from 2000 to 12,000 pounds per square inch (psi) using a hydrogen carrier, with or without high-pressure water, and an appropriate catalyst. The catalyst reacts with the hydrogen carrier and, optionally, high-pressure water, in a catalytic reformer (20) maintained under desired temperature and pressure conditions.

The crude oil reserves have a calculable time limit. Starting materials containing silicon dioxide are preferably used as raw materials.

The invention discloses a microchannel reactor applicable to dehydrogenation reaction of liquid hydrogen source materials and a dehydrogenation method. Flow guide plates are arranged in a liquid distributor which is connected above a microchannel reactor body, a high-temperature flange is arranged between the liquid distributor and a hydrogen source material inlet, the lower portion of the microchannel reactor body is provided with a hydrogen storage carrier and hydrogen outlet, and a high-temperature flange is arranged between the microchannel reactor body and the outlet. A heat carrier distributor is connected to an inlet side of the microchannel reactor body, flow guide plates are arranged in the heat carrier distributor, a high-temperature flange is arranged between the heat carrier distributor and a heat carrier inlet, the other side of the microchannel reactor body is provided with a heat carrier outlet, and a high-temperature flange is arranged between the microchannel reactor body and the heat carrier outlet. The microchannel reactor body is internally provided with a plurality of transverse and longitudinal orthogonal microchannels. By the microchannel reactor, reaction efficiency is improved, and reactor cost is effectively reduced.

The invention belongs to the technical field of nano materials, and relates to a preparation method for a boron carbonitride nanosheet loaded metal nano particle hybrid material. The boron carbonitride nanosheet loaded metal nano particle hybrid material is prepared by taking metal nitrate, glycine and boric acid as raw materials through a one-step thermal treatment method. A synthetic method for the boron carbonitride nanosheet loaded metal nano particle hybrid material provided by the invention is simple in synthesis process, and the needed raw materials are cheap and easily available raw materials on the market; and the prepared a boron carbonitride nanosheet loaded metal nano particle hybrid material is soft and porous, and has a very good application prospect on application fields such as capacitors, hydrogen storage carriers and biosensors.

A process for producing and storing hydrogen includes providing an intermediate gas mixture having an increased proportion of hydrogen and contacting of the intermediate gas mixture with a hydrogen carrier medium in order to hydrogenate the hydrogen carrier medium.

The invention discloses a preparation method of benzoic acid. According to the method disclosed by the invention, the benzoic acid is prepared by taking toluene as a raw material, oxygen as an oxidant and a metal porphyrin compound as a catalyst, adding a hydrogen carrier into a reaction system, and carrying out catalytic reaction under conditions that the reaction temperature is 80 DEG C to 130 DEG C and the reaction pressure is 0.3MPa to 1.2MPa. The preparation method disclosed by the invention has the advantages of less catalyst dosage, good catalytic effect, moderate conditions, simple process and the like.

The invention belongs to the technical field of hydrogen storage and catalysis, and particularly relates to an in-situ prepared nickel-based catalyst for catalyzing hydrogen absorption and release ofa liquid organic hydrogen carrier, and a preparation method thereof, wherein the catalyst comprises a catalyst carrier and an active catalytic component loaded on the catalyst carrier, and the activecatalytic component is nano nickel formed in situ. The preparation method comprises: carrying out heating and thermal insulation on bis(1,5-cyclooctadiene)nickel, a reaction solvent liquid organic hydrogen carrier and a catalyst carrier under a vacuum condition, heating, inflating with hydrogen, and carrying out a reaction. Compared with the catalyst in the prior art, the catalyst has the following advantages that (1) no complex catalyst preparation process exists; and (2) precious metal is not used while excellent catalytic performance of catalyzing of hydrogen absorption and hydrogen desorption of a liquid organic hydrogen carrier is shown, and the catalyst has important significance in practical application of the liquid organic hydrogen carrier.

An injection port for a gas chromatograph (GC) is operated such that, during an injection sequence, an inert gas is used for sample transfer to the analytical column while hydrogen is subsequently utilized for the majority of the analytical separation. This allows for a high degree of chromatographic efficiency, while also reducing unwanted chemical reactions involving hydrogen and/or reactive solvents in a hot injection port. Certain embodiments also provide an increased margin of safety when using hydrogen, since the total flow may be limited such that the concentration of hydrogen in the GC oven never exceeds a safety limit, such as the lower explosive limit.

The invention discloses a method for preparing a ketone compound through biomimetic catalysis. According to the method, aromatic alkane, straight-chain alkane and annular alkane are used as raw materials, oxygen is used as an oxidizing agent, a certain number of hydrogen carriers are added, a metalloporphyrin compound is used as a catalyst, the reaction temperature is controlled at 50-80 DEG C, and ketone is obtained through the catalysis reaction at normal pressure. The method has the advantages of being mild in reaction condition, good in catalysis effect, high in selectivity, simple in process, and the like.

The crude oil reserves have a calculable time limit. Starting materials containing silicon dioxide are preferably used as raw materials.

The invention relates to a preparation method of born-nitrogen miscellaneous graphene hydrogel, and belongs to the technical field of nano materials. According to the preparation method, firstly, graphite oxide is taken as a carbon source, and ammonium pentaborate is used as a born source and a nitrogen source, so that the born-nitrogen miscellaneous graphene hydrogel is prepared by one step under a gentle hydrothermal condition. The synthesis method of the born-nitrogen miscellaneous graphene hydrogel provided by the invention is simple in synthesis process; the required raw materials are low in cost; the conditions are gentle; the prepared born-nitrogen miscellaneous graphene hydrogel has a rich pore structure, and has good application prospect in the application fields such as a capacitor with double electric layers, a hydrogen storage carrier and a biological sensor.