846 results about "Reaction energy" patented technology

The invention provides a Li3VO4 cathode anode material and a preparation method thereof, particularly a novel lithium ion battery anode material Li3VO4 prapared by carrying out hydrothermal reaction on vanadium pentoxide, lithium carbonate and hexamethylenetetramine used as precursors. The hydrothermal reaction is utilized to prepare an intermediate phase product, and the intermediate phase product is gradually subjected to solid-phase reaction while reaction energy is supplied by high temperature heating, thereby finally obtaining the Li3VO4 with favorable crystallinity. The first charge and discharge capacities of the Li3VO4 are respectively 523 and 423 mAh / g, and the charge and discharge capacities after 100 loops are still 398 mAh / g; and the grain size is uniform, and is less than 200nm.

The invention discloses a method for preparing a rare earth element-doped nickel cobalt lithium manganate positive electrode material. The method comprises the following steps: dissolving nickel cobalt manganese salts in water to prepare a solution, adding a rare earth soluble salt, preparing ammonia water by taking ammonia water serving as a complexing agent according to a salt ammonia ratio, and preparing into a solution with NaOH as a precipitator; respectively adding the ammonia water and sodium hydroxide in a nitrogen atmosphere under the condition of water bath temperature of 70 DEG C, and stirring during the reaction process so that the reaction can be uniform; stirring and ageing for 10-15 hours, filtering the obtained reaction solution to obtain a precursor of nickel cobalt lithium manganate, performing microwave drying, and drying in a vacuum drying oven for 5 hours; mixing the precursor with a lithium salt, and mechanically performing ball milling and mixing through a wet method; sintering the material at the treatment temperature of 700-850 DEG C, and introducing oxygen in the sintering process; and grinding the material subjected to complete sintering, and allowing the material to pass through a 325-mesh sieve, thus obtaining the final product.

The invention discloses and provides a catalyst used in a process of preparing furfuryl alcohol by furfural through selective hydrogenation and a preparation method of the catalyst, wherein the catalyst has the advantages of lower cost, capability of protecting environment, low reaction temperature, long service life and high activity and selectivity. The catalyst is a copper oxide-silicon oxide compound oxide. The preparation method comprises the steps of: 1, adding water in a copper salt, stirring for dissolving, and reacting by using 10-20 weight percent of sodium hydroxide solution to form a colloid A; 2, diluting the silicon oxide colloid by using water accounting for two times of the silicon oxide colloid by weight to form a colloid B; 3, adding the colloid B into the colloid A, mixing, sequentially heating, ageing, filtering, washing, drying and roasting; and 4, carrying out hydrogenation reduction activation for 3-18h to prepare the catalyst. The catalyst does not contain a toxic material Cr, can react at a low temperature, is capable of reducing the production energy consumption, and is high in reaction activity, high in furfural transformation rate, and high in selectivity of furfuryl alcohol.

The invention discloses a preparation method of a carbon-based copper-cobalt oxide nanosheet catalyst and application to oxygen evolution by electrolyzing water based on the catalyst, and belongs to the technical fields of nano catalysis, nano materials and metal-organic framework (MOF) materials. The preparation method comprises the following main steps of blending an aspartic acid alkaline solution with a copper nitrate-cobalt nitrate solution at a room temperature, generating a sediment at the room temperature, carrying out suction filtration, and drying, so that a Cu-MOF nano fiber loaded Co(II) ion, namely a CuCo-MOF nano fiber, is prepared; heating the CuCo-MOF nano fiber in an air atmosphere, so that the carbon-based copper-cobalt oxide nanosheet catalyst is prepared. The cost of raw materials used for the preparation of the catalyst is low; the preparation process is simple; the reactive energy consumption is low; the carbon-based copper-cobalt oxide nanosheet catalyst has an industrial application prospect. The catalyst is used for efficiently catalyzing and hydrolyzing the water for the oxygen evolution and has favorable oxygen-evolution electrocatalytic activity and electrochemical stability.

A reactor for reforming a hydrocarbon, and associated processes and systems, are described herein. In one example, a reactor is provided that is configured to use non-equilibrium gliding arc discharge plasma. In another example, the reactor uses a vortex flow pattern. Two stages of reforming are described. In a first stage, the hydrocarbon absorbs heat from the wall of the reactor and combusts to form carbon dioxide, carbon monoxide, and water. In a second stage, a gliding arc discharge is use to form syngas, which is a mixture of hydrogen gas and carbon monoxide. The heat generated by the combustion of the first stage transfers to the wall of the reactor and heated products of the second stage mix with incoming hydrocarbon to provide for partial recuperation of the reaction energy.

The invention provides a concrete polycarboxylate water reducing agent and a preparing method thereof. The concrete polycarboxylate water reducing agent is a polymer copolymerized by a monomer A and a monomer B, wherein the weight-average molecular weight of the polymer ranges from 5,000 to 30,000. The chemical structural formula is shown in the specification, wherein m is an integer ranging from 14 to 66, n is an integer ranging from 0 to 40, R1 is H or COOH, and R2 is H or CH3. The performance is stable, the water-reducing rate is high, and cement adaptation is high; the concrete polycarboxylate water reducing agent has the excellent water reducing performance and the excellent slump retaining performance, and has the advantages that the preparing process is simple in technology, time is short, reaction energy consumption is low, operability is high, and pollution to the environment is avoided.

A pocket-size ozone generator for in-situ sterilization of water is disclosed. The pocket-size ozone generator comprises a power source, at least a supercapacitor, a switching circuit and at least a pair of electrodes. The power source is adapted for providing a reaction energy to generate ozone gas within the water to be treated. The supercapacitor is adapted for amplifying the reaction energy provided by the power source. The circuitry is adapted for controlling the supercapacitor to deliver consistent power supply to generate ozone. The electrodes are adapted for receiving the amplified reaction energy from the supercapacitor to generate ozone within the water to be treated.

An ozone generator for in-situ sterilization of water, which may be pocket-sized, is disclosed. The ozone generator includes a power source, at least a supercapacitor, a switching circuitry and at least a pair of electrodes. The power source is adapted for providing a reaction energy to generate ozone gas within the water to be treated. The supercapacitor is adapted for amplifying the reaction energy provided by the power source. The circuitry is adapted for controlling the supercapacitor to deliver consistent power supply to generate ozone. The electrodes are adapted for receiving the amplified reaction energy from the supercapacitor to generate ozone within the water to be treated.

The invention relates to a method for treating carbon-containing organic matter by supercritical water oxidation. The method comprises the step of obtaining oxidative decomposition product by oxidizing the carbon-containing organic matter in the supercritical state of water and under the effect of oxidant; heat released by the supercritical water oxidation treatment of the carbon-containing organic matter at least can satisfy the heat required by warming the carbon-containing organic matter to the supercritical state of the water, thereby energy is not required to be provided by the outside in the stable operation process, and the self-supply of reaction energy is completely achieved; and the cold start of the reaction is achieved by the cold start mode of low-temperature combustion catalysis.

The invention relates to a method for utilizing low co-fusion type ionic liquid electro-deposition to manufacture nanometer copper powder and is mainly applied to the field of material preparation. The method comprises the steps of mixing choline chloride and urea after performing vacuum drying on choline chloride and urea, performing reaction to obtain low co-fusion type ionic liquid, adding a copper precursor to perform uniform mixing, and obtaining an ionic liquid-copper salt compound electrolyte; finally under the inert atmosphere, enabling stainless steel, a nickel sheet or a titanium sheet to serve as a negative pole, enabling graphite or an inertial positive pole to serve as a positive pole, performing electro-deposition in the ionic liquid-copper salt compound electrolyte, and obtaining the nanometer copper powder with the grain size of 30-50nm on the surface of the negative pole. The method has the advantages that the method is low in cost and reaction energy consumption, short in production flow, free of pollution and simple in process, product quality is stable, and added values are high.

The invention provides a halamine antibacterial agent, its preparation method and application. The halamine antibacterial agent is a compound with a structure shown in formula (I). The preparation method consists of: in the presence of an acid-binding agent, taking cyanuric chloride or cyanuric fluoride or their derivative, and 2, 2, 6, 6-tetramethyl-4-piperidinol as synthesis raw materials to prepare a halamine antibacterial agent precursor with a structure shown in formula (II), and then reacting the precursor with a sodium hypochlorite solution to prepare a halamine antibacterial agent finished product. The halamine antibacterial agent can be applied in textile antibacterial finishing. Specifically, a textile to be treated is dipped in a finishing solution containing the halamine antibacterial agent precursor and a metal salt catalyst for finishing, and finally a halogenation reaction is carried out so as to obtain an antibacterial textile. The method provided in the invention for preparation of the halamine antibacterial agent has the advantages of low cost, simple process, low reaction temperature, no toxicity or pollution, and is in line with the requirements of ecological textile antibacterial finishing. According to the invention, the application process has the characteristics of simple operation and low reaction energy consumption, and antibacterial textiles with good antibacterial properties can be prepared.