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2407 results about "Iron chloride" patented technology

Electrothermal film and manufacturing method thereof

The invention relates to an electrothermal film and a manufacturing method thereof, belonging to the technical field of semiconductor heating. The electrothermal film is mainly prepared by adopting stannic chloride, titanium tetrachloride, stannic chloride, titanium trichloride, ferric chloride, antimony trichloride, calcium chloride, potassium chloride, cadmium chloride, stannic dioxide, stannictetroxide, hydrofluoric acid, boric acid, ethanol, isopropyl alcohol and inorganic water. By adopting the above formula, the mixture is mixed, stirred and heated to prepare into electrothermal film treating fluid, a semi-finished product of the electrothermal film is obtained by spraying the electrothermal film treating fluid at negative pressure on the electrothermal film carrier, and then silveroxide slurry is coated on the semi-finished product of the electrothermal film for baking to form a finished product of the electrothermal film. The electrothermal film has reasonable proportion andsimple manufacturing process, can be manufactured into various electrothermal film heating devices, has a working temperature capable of being up to 500 DEG C, and has wider application range. The electrothermal film of the invention also has the function of far infrared radiation, can play a role of physical therapy and health care to human body, and can help improve the quality and output of agricultural products.
Owner:GUANGDONG HALLSMART INTELLIGENCE TECH CORP LTD

Regeneration method of lithium extraction system

The invention discloses a regeneration method of a lithium extraction system. The lithium extraction system is regenerated by virtue of alkaline saponification and the regeneration method comprises the following steps of mixing empty-loading organic phases subjected to lithium extraction and reverse extraction and alkaline liquor, saponifying and standing for separating phases to obtain a clarified and transparent regenerated and extracted organic phase, wherein the empty-loading organic phases comprise an extractant, a synergistic extractant and a diluent which are involved in the lithium extraction and reverse extraction processes; the synergistic extractant is iron chloride; and the alkaline liquor is any one of sodium hydroxide solution and potassium hydroxide solution. The regeneration method of the lithium extraction system disclosed by the invention has the advantages of simplicity in operation and good saponifying effect; when lithium is extracted by virtue of the saponified, regenerated and recycled extraction organic phase, the extraction efficiency of lithium is high and the extraction effect is good; and by the method, the recycling of the extraction organic phase for extracting lithium is achieved and the process flows of extracting, carrying out reverse extraction, regenerating and extracting for circularly extracting lithium are completed.
Owner:QINGHAI INST OF SALT LAKES OF CHINESE ACAD OF SCI

Preparation method and application of iron-nitrogen co-doped porous carbon sphere material

The invention discloses a preparation method for an iron-nitrogen co-doped porous carbon sphere material. The preparation method comprises the following steps: by taking 2-aminopyridine as a monomer and taking ammonium persulfate and ferric chloride as oxidants, performing in-situ polymerization reaction in a duct of a porous silicon dioxide template to obtain a precursor; performing high-temperature carbonization treatment on the precursor in a tubular furnace and an inert gas nitrogen-gas environment; and removing the silicon dioxide template by hydrofluoric acid to obtain the iron-nitrogen co-doped porous carbon sphere material which is taken as an electric catalyst to achieve good catalytic effect in oxygen gas reduction reaction. The preparation method has the advantages that the process is simple and easy to perform and the raw materials are cheap. The prepared carbon material contains a three-dimensional communicated pore structure, has a high specific surface area and a large pore volume, can effectively improve the electric catalytic activity through the heteroatom nitrogen-iron doping, has relatively high electric catalytic efficiency while being applied as a low-price electric catalyst, and has an important value and significance in the fields of doped type porous carbon material preparation and proton membrane fuel battery electric catalysis.
Owner:NANKAI UNIV

Metallographic etched process for displaying G Cr15 original austenite grain border

A metallographic corrosion method for displaying a GCr15 original austenitic grain boundary comprises adding picric acid 5g into distilled water100ml and mixing continuously, then adding sodium dodecyl benzene sulfonate 5ml 50% and mixing, finally adding ferric chloride 2g, and using after placing for 24 hours. A sample is grinded roughly, grinded finely, polished, cleared, dried, immersed into caustic erodent for 2-5 minutes according to normal method under a quenching tempering condition until etched surface is changed into silver grey, cleaned up through flowing water, cleaned with alcohol 95%, and dried. If the sample is over-corroded, polishing paste W0.5-1.0 or metallographic polishing egent0.5-1.0 is added on silk polishing cloth, the sample is polished slightly with hands, then cleaned with alcohol 95%, and dried. According to practical condition, grain granularity measurement can adopt methods of picture contrast, grid, intercept, quantitative metallography, and the like, to assess according to relevant standards.
Owner:LUOYANG BEARING SCI & TECH CO LTD

Preparation method of SSZ-13 loaded Cu-Fe catalyst for selectively catalyzing and eliminating NOx by ammonia

The invention provides a preparation method of a SSZ-13 loaded Cu-Fe catalyst for selectively catalyzing and eliminating NOx by ammonia. The catalyst is used for catalyzing and eliminating nitrogen oxides. A micropore SSZ-13 molecular sieve carrier with high specific surface area (400-550 m2 / g) is prepared by using a soft template method. And then by using a mixed solution of ferric chloride and copper chloride as well as a SSZ-13 molecular sieve ion exchanging method, the SSZ-13 molecular sieve loaded Cu-Fe composite catalyst is prepared. According to the invention, within a wide temperature range (150-550 DEG C), high catalytic eliminating effect and higher stability are obtained for a pollutant with high airspeed (120, 000 mL. (g.h)-1 - 1-360,000 mL.(g.h)-1), high O2 concentration (10vl.%-20v1.%), high H2O content (5wt%-10wt%) and low concentration NO (300-1000 ppm). After a hydrocarbon compound (300-1000 ppm propylene) is added to a reaction system, the catalyst prepared by the preparation method provided by the invention has the advantages of high carbon deposition resistance and high hydrothermal stability.
Owner:BEIJING UNIV OF TECH

Modified prussian blue material, sodium ion battery positive electrode plate and preparation method

InactiveCN106960956ALow crystal water contentReduce defectsCell electrodesSecondary cellsWater contentPyrrole
The invention discloses a modified prussian blue material, a sodium ion battery positive electrode plate and a preparation method. The preparation method for the modified prussian blue material at least comprises the steps of performing a reaction on methyl orange, ferric chloride and pyrrole based on a certain proportion to obtain a solution, then performing a reaction on the obtained solution with a mixed solution of sodium ferrocyanide and inorganic acid, and next, performing processing of centrifuging, washing, drying and the like to obtain the modified prussian blue material. Compared with the conventional synthesis method, the prepared modified prussian blue material is lower in crystal water content, less in defects, high in tubular polypyrrole conductivity and relatively high in environment stability, so that an electrolyte can permeate rapidly, and rapid diffusion of Na+ can be promoted to form a three-dimensional conductive network with prussian blue nanoparticles; therefore, the material conductivity is improved, and the material is novel and unique; in addition, the cycling performance and the rate capability of the material are greatly improved; and the modified prussian blue material is more suitable for application of an energy storage material, such as the positive electrode material of the sodium ion battery.
Owner:SHANGHAI SINOPOLY JIAHUA BATTERY TECH

Inorganic-modified chitosan composite type polymeric flocculant

The invention relates to an inorganic-modified chitosan composite type polymeric flocculant. The inorganic-modified chitosan composite type polymeric flocculant is characterized in that a method for preparing the composite type polymeric flocculant comprises the following steps of: taking polyacrylamide-modified chitosan as a raw material and methacryloyloxyethyl trimethyl ammonium chloride, maleic acid and ceric ammonium nitrate as initiators, synthesizing a modified chitosan copolymer under a faintly acidic condition and blending the modified chitosan copolymer with polymerized ferric chloride and polymerized aluminium chloride to obtain the inorganic-modified chitosan composite type polymeric flocculant. According to the steps, the mass ratio of modified starch to the chitosan is (1-2): 1, the reaction temperature is 50-60 DEG C, the reaction time is 2-3 hours, and the use amount of the initiators accounts for 0.02 part of the total mass of the system. The inorganic-modified chitosan composite type polymeric flocculant prepared by using the method has the characteristics of high efficiency, low cost and low secondary pollution to environment; and aiming at different sludges, compared with a conventional flocculant, the inorganic-modified chitosan composite type polymeric flocculant disclosed by the invention has the advantages that the wastewater decoloring rate and the wastewater deturbidity rate can reach more than 99 percent under the condition of low use amount.
Owner:WUHAN SLOAN ELECTRIC

Nitrogen-doped carbon nanotube nickel-iron coated oxygen evolution catalytic material for water electrolysis and application

The invention relates to preparation and application of a nitrogen-doped carbon nanotube nickel-iron coated oxygen evolution catalytic material for water electrolysis. A general formula of the composite electrode material is Ni0.9Fe0.1@CNx, wherein CN is nitrogen-doped carbon, and x is greater than or equal to 0.01 and less than or equal to 0.1. The specific preparation method of the catalytic material comprises the steps of uniformly mixing nickel acetate and ferric chloride with citric acid and thiourea according to certain molar percentages, and then carrying out calcinations for 1-10h under an N2 gas flow rate of 10-100 mL/min at 600-900 DEG C to prepare the catalytic material. The preparation method provided by the invention effectively achieves one-step preparation of the Ni0.9Fe0.1@CNx oxygen evolution catalytic material with set ratios of Ni, Fe, C and N by an in-situ solid-phase method, and the product is nanotube-shaped, porous and large in specific surface area, and has excellent performance when being used as an oxygen evolution electrode material for water electrolysis. The method provided by the invention is convenient to operate, the process is simple and easy to control, raw materials are low in price and easy to obtain, and the catalytic material is suitable for large-scale production.
Owner:TAIYUAN UNIV OF TECH

Method of eliminating sodium chloride in iron-dextran complex compound water solution and device thereof

The invention relates to a method and device for eliminating sodium chloride in the aqueous solution for the complex of ferrodextran, which is characterized in that: the ferrodextran is prepared with dextran and ferric trichloride. The sodium chloride in the ferrodextran is eliminated with an electrodialysis film, that is, eliminating the sodium chloride of the solvent by electrodialysis process in the ferrodextran complex solvent with iron content is more than or equal to 40mg / ml, sodium chloride content is more than or equal to 5.0 per cent wt and viscosity of 3.0mpa is multiplied by s (20 DEG C.) under the temperature of 10 to 90 DEG C. Compared with the technique of eliminating sodium chloride with alcohol precipitation, the invention prevents the safety hazard from flammable and combustible alcohol and reduces the production cost.
Owner:GUANGXI RES INST OF CHEM IND CO LTD

Dendritic crystal corrosion macroscopic examination reagent for solidification structures and defects of continuous cast blank and preparation method thereof

ActiveCN102174699ASolve the problem that the dendritic solidification structure of the continuous casting slab cannot be clearly displayedDisplay without reductionPreparing sample for investigationOptically investigating flaws/contaminationAlcoholCopper chloride
The invention discloses a dendritic crystal corrosion macroscopic examination reagent for solidification structures and defects of a continuous cast blank and a preparation method thereof. The reagent comprises the following components by mass percent: 0.28-1.09% of copper chloride, 0.17-0.27% of magnesium chloride, 0.56-1.60% of ferric chloride, 1.28-1.30% of hydrochloric acid with the mass concentration of 36-38%, 54.70-55.80% of absolute ethyl alcohol and the balance of water. The preparation method comprises the following steps: adding the water into a container, and then adding the copper chloride, magnesium chloride, ferric chloride and hydrochloric acid; and adding the absolute ethyl alcohol after all the added raw materials are fully dissolved, and evenly stirring. Compared with the prior art, the invention solves the problem that other corrosive reagents can not clearly display the dendritic crystal solidification structures of a continuous cast blank; and the reagent has the characteristic of original-size display without expansion or reduction for interior defects of a continuous cast blank when used for dendritic crystal corrosion macroscopic examination on the solidification structures and defects of the continuous cast blank.
Owner:苏州东大汉森冶金实业有限公司

Method for recycling tin from waste tin-stripping solution based on tin-stripping solution of hydrochloric acid-tin salt system

The invention discloses a method for efficiently recycling tin from a waste tin-stripping solution based on a tin-stripping solution of a hydrochloric acid-tin salt system. According to the tin-stripping solution, the components and the contents are as follows: 110-230g / L of tin tetrachloride, 70-220g / L of hydrochloric acid, 10-30g / L of iron chloride, 0.5-2.5g / L of a stabilizing agent, 5-30g / L of an accelerant and 2-5g / L of a brightener. The waste tin-stripping solution obtained by tin stripping is subjected to diaphragm electrodeposition treatment by using a cathode room and an anode room of an anion diaphragm electrolytic cell to recycle tin, the tin tetrachloride and ferric trichloride. According to the method for treating the waste tin-stripping solution, not only can the tin be effectively recycled from the waste tin-stripping solution, but also the tin tetrachloride and ferric trichloride can be regenerated and returned to prepare the waste tin-stripping solution to use; the problems of resource wastes, serious environment pollution and the like of a traditional waste tin-stripping solution treatment method are completely avoided.
Owner:CENT SOUTH UNIV

Ecological synthetic utilization method of fly ash

The invention relates to an ecological synthetic utilization method of fly ash, and the method has the following steps: (1) selecting fly ash which contains aluminum oxide, iron oxide and silicon oxide as a raw material, wherein the mass content of aluminum oxide, iron oxide and silicon oxide are respectively 20-45%, 10-40% and 30-50%, performing a fine grinding and then leaching; (2) filtering and separating to obtain a leaching solution and leaching residue; adding tributyl phosphate and a diluent in the leaching solution to extract, wherein aluminum enters in raffinate phase to form an aluminum chloride solution as well as iron enters in raffinate phase; (3) performing a liquid atomizing pyrolysis to aluminum chloride to obtain aluminum oxide; (4) using water as a re-extraction preparation in raffinate phase for carrying out a re-extraction, wherein iron enters in the re-extraction preparation to form an iron chloride solution; performing a liquid atomizing pyrolysis to iron chloride to obtain iron red. According to the invention, the valuable elements of aluminum, iron, silicon and the like in fly ash are synthetically utilized, the process flow is short and the operation is simple, so that the ecological synthetic utilization method realizes the synthetic utilization of all the valuable elements of aluminum, iron, silicon and the like in fly ash.
Owner:DONGDA NONFERROUS SOLID WASTE TECH RES INST LIAOLING CO LTD

Industrial wastewater treating agent

The invention relates to the technical field of sewage treatment and particularly relates to an industrial wastewater treating agent. The industrial wastewater treating agent comprises the following components in parts by mass: 0.8-3 parts of polyacrylamide, 25-35 parts of aluminium polychlorid, 25-55 parts of alums, 3-8 parts of iron trichloride, 0.8-3.4 parts of polymeric ferric sulfate, 1.2-2.5 parts of a coagulant aid, 2-10 parts of plant fiber, 10-30 parts of coal ash, 0.8-2.5 parts of sodium silicate, 2.5-5 parts of sodium sulfite, 0.5-3.5 parts of sodium hypochlorite, 5-10 parts of hydrogen peroxide, 8-15 parts of a sodium carbonate-sodium bicarbonate buffer system and 10-20 parts of sodium-based bentonite. The treating agent has the beneficial effects of wide treated pollutant range, good effect, wide production raw material source, environmental friendliness, no toxicity, good discharged water quality, short process flow, and high process operating safety. The treating agent disclosed by the invention can treat various kinds of wastewater such as chemical wastewater produced in oil fields, mining, steel, electroplating wastewater, dyes, pesticides, wine-making and chemical engineering, and sanitary sewage, papermaking wastewater, river and lake water, rubbish seeping water, leather-making wastewater, and the like; and the treating agent is good in treatment effect.
Owner:湖北源绿高科技节能环保有限公司

Polymeric aluminum ferric chloride-polydimethyldiallylammonium chloride composite coagulant and preparation method thereof

The invention discloses a polymeric aluminum ferric chloride-polydimethyldiallylammonium chloride composite coagulant and a preparation method and an application thereof. The method comprises the following steps: heating polyaluminium chloride solution to 40-90 DEG C while stirring the solution, adding polyferric chloride, heating and stirring the solution to perform copolymerization between polyaluminium chloride and polyferric chloride for 0.5-2.0h, obtaining polymeric aluminum ferric chloride solution; adding polydimethyldiallylammonium chloride colloid at room temperature while stirring to obtain a mixed liquor of the two products; stirring at room temperature to ensure that the polydimethyldiallylammonium chloride colloid and polymeric aluminum ferric chloride are completely mutually soluble and obtaining the polymeric aluminum ferric chloride-polydimethyldiallylammonium chloride composite coagulant.
Owner:JINAN UNIVERSITY

Method for preparing hexagonal boron nitride nano composite structure

As an important III-V main group compound, hexagonal boron nitride (h-BN) has multiple excellent physical and chemical properties, such as high-temperature resistance, oxidation resistance, corrosion resistance, self-lubrication and high thermal conductivity, and can be widely used in the fields of chemical industry, machinery, electronics, aerospaces, and the like. In recent years, a research on BN is relatively focused on BN nanotubes; by contrast, the research on BN nanowires is little, and a report on relevant BN micro-nano composite structures is rarer. The novel BN micro-nano composite structure is synthesized by taking amorphous boron powder, ferric chloride hexahydrate, absolute ethyl alcohol, high-purity nitrogen and liquid ammonia as raw materials. The synthetic method is simple in technology; the raw materials are nontoxic, environment-friendly and low in cost; the product purity is high; the yield is high; no purification is required; and scale production is facilitated. In addition, the novel BN micro-nano composite structure has a very high specific surface area, and has very wide development and application prospects in the fields of catalyst carrier materials, novel energy storage materials, ceramic compound materials and polymer composites.
Owner:GUANGXI UNIV

Preparation method of stainless steel-resin composite and stainless steel-resin composite prepared by same

The invention relates to a preparation method of a stainless steel-resin composite and a stainless steel-resin composite prepared by the same. The preparation method comprises the following steps: S1. putting a pretreated stainless steel substrate in a corrosive solution to perform electrochemical corrosion, wherein the corrosive solution is a 2-25 wt% hydrochloric acid and / or 5-35 wt% iron trichloride solution; and S2. carrying out injection molding on a resin composition to the surface of the stainless steel substrate obtained in the step S1, and forming to obtain the stainless steel-resin composite. The stainless steel-resin composite has the advantages of high binding force between stainless steel and resin, simple technique, low requirements for resin, wide application range and no pollution, and can easily implement large-scale production.
Owner:BYD CO LTD
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