1746 results about "Molybdic acid" patented technology

The invention provides a plant nutrient solution for soilless culture of tomato. The plant nutrient solution is prepared by the following raw materials in part by weight: 2 to 4 parts of potassium nitrate, 3 to 8 parts of calcium nitrate, 1 to 5 parts of magnesium sulfate, 1 to 3 parts of potassium phosphate, 1 to 2 parts of potassium sulphate, 1 to 2 parts of monopotassium phosphate, 0.1 to 0.15 part of Na2-EDTA, 0.05 to 0.1 part of Fe-EDTA, 0.01 to 0.05 part of molybdic acid, 0.01 to 0.03 part of manganese sulfate, 0.3 to 0.5 part of sodium tetraborate, 2 to 4 parts of superphosphate, 0.003 to 0.01 part of zinc sulfate, 0.001 to 0.002 part of copper sulfate, 0.001 to 0.003 part of ammonium nitrate, 1 to 3 parts of urea, 1 to 2 parts of organic acid, 0.5 to 1 part of beta cyclodextrin, 0.05 to 0.1 part of vitamin B, 2 to 4 parts of chitosan, 1 to 2 parts of nicotinamide, 0.5 to 2 parts of amino acid, 0.3 to 0.5 part of diethyl aminoethyl hexanoate, 0.02 to 0.5 part of gibberellin, and 5,000 to 7,000 parts of water. According to experiment, the plant nutrient solution provided by the invention can be used for carrying out soilless culture of tomato, and the tomato has high plant height, thick stem, high cluster and high output.

A coating composition used for coating of a steel material and/or aluminum material comprises a corrosion inhibitor, a base resin and a curing agent. The corrosion inhibitor may be selected from cerium compounds, lanthanum compounds, molybdate salt compounds, gluconic acid derivative salts, porous base materials, triazole compounds, thiazole compounds, tetracyclines, and metal phosphate salt compounds of ascorbic acid. The base resin may include a xylene-formaldehyde-resin-modified amino-containing epoxy resins obtained by reacting an epoxy resin having an epoxy equivalent of from 180 to 2500 with a xylene formaldehyde resin and an amino-containing compound. The curing agent may be a blocked polyisocyanate compound obtained by blocking an isocyanate group of a polyisocyanate compound with a blocking agent.

The invention provides a method for preparing a high-performance molybdenum-based hydrogen evolution electrode by phosphatizing a molybdate precursor and belongs to the fields of water electrolysis and electric catalytic hydrogen evolution in the chlor-alkali industry. The method comprises the steps of pre-processing foamed nickel, growing the molybdate precursor in situ on the surface of a pre-processed foamed nickel base with the hydrothermal synthesis method, and finally placing the prepared precursor and a phosphorus source into a rube furnace together for phosphating of the molybdate precursor so that the high-performance molybdenum-based hydrogen evolution electrode can be prepared. The method is novel, the technology adopted is simple, production cost is low, the requirement for equipment is low, and the method is suitable for industrial production. Furthermore, the electrode is large in specific area, can be combined with the base firmly, has excellent hydrogen evolution activity and stability, and can be widely applied to the fields of water electrolysis and hydrogen evolution in the chlor-alkali industry.

The present invention relates to a phosphorus-free composite antiincrustation corrosion inhibitor. It includes polyaspartic acid and/or polyepoxysuccinic acid and at least one kind of scale inhibition and dispersion agent, in which the scale inbibition and dispersion agent is polymer containing carboxylic acid group, or it includes polyaspartic acid and/or polyepoxysuccinic acid, zinc salt, molybdate or tungstate and polymer containing carboxylic acid group. Said invention is applicable to treatment of circulating cooling water.

The invention provides a boiler coal combustion-improving desulfurizing and denitrifying agent composition. The composition comprises the following raw materials in parts by weight: 2-7 parts of sodium carbonate, 1-3 parts of alumina, 2-8 parts of aluminium hydroxide, 2-5 parts of ferric trichloride, 2-6 parts of ferric oxide, 3-10 parts of potassium permanganate, 3-10 parts of potassium chlorate, 10-35 parts of activated attapulgite clay, 15-30 parts of urea, 2-4 parts of ammonium formate, 2-4 parts of ammonium chloride, 6-23 parts of ammonium acetate, 3-9 parts of manganese oxide, 9-12 parts of copper chloride, 1-3 parts of copper oxide, 2-4 parts of zinc sulfate, 1-3 parts of zinc nitrate, 7-18 parts of potassium dichromate, 1.0-1.5 parts of titanium dioxide, 0.5-1.0 part of barium molybdate, 0.5-1.5 parts of cobalt sulfate, 0.5-1.5 parts of vanadium pentoxide, 0.3-0.7 part of cerium oxide, 0.1-0.2 part of sodium dodecyl benzene sulfonate and 0.1-0.2 part of alkyl glyceryl ether. The composition is convenient to use, has stable properties, plays roles of combustion improving, desulfurization and denitrification, has coal saving rate of 8-25% and can remove fixed sulfur by 50-70%.

The invention provides a corrugated metal pipe (CMP) grade flame-retardant smoke-suppressing polyvinyl chloride cable sheath material and a preparation method thereof and belongs to the technical field of material. The invention solves the problem that in the prior art, the flame-retardant and smoke-suppressing effects and the mechanical property and the physical property of the cable sheath material are all good. The raw materials thereof comprise the following components in parts by weight: 100 parts of polyvinyl chloride, 5-15 parts of common plasticizer, 20-50 parts of flame-retardant plasticizer, 40-100 parts of fire retardant, 20-50 parts of smoke-suppressing agent, 5-10 parts of stabilizer, 40-80 parts of toughening modification agent and 1-5 parts of promoter; wherein the smoke-suppressing agent comprises ammonium octamolybdate, zinc molybdate and zinc borate which are compounded according to the proportion of 1:1 to 3:1 to 3 and coated by aluminium hydroxide the grain size of which is 1-5mu m according to the proportion of 1:1 to 3. The CMP grade flame-retardant smoke-suppressing polyvinyl chloride cable sheath material has the advantages of good flame-retardant and smoke-suppressing effect, mechanical property and physical property.

Disclosed is a method for producing 1,3-butadiene through oxidative dehydrogenation of normal-butene using a parallel reactor in which catalysts are charged into fixed bed reactors and are not physically mixed. More specifically, disclosed is a method for efficiently producing 1,3-butadiene through oxidative dehydrogenation of normal-butene using the parallel reactor containing multi-component bismuth molybdate-based catalysts exhibiting different activities to oxidative dehydrogenation for normal-butene isomers (1-butene, trans-2-butene and cis-2-butene), and butene separated from a C4 mixture containing normal-butene and normal-butane, as a reactant.

The present invention is wet process of extracting vanadium and/or molybdenum form waste petrochemical catalyst alumina carrier containing V, Mo and other elements. The wet process includes high-temperature deoiling the catalyst in natural granularity, mixing with sodium carbonate, high-temperature oxidation and roasting in a kiln or furnace to obtain water soluble sodium vanadate and sodium molybdate; countercurrent water soaking of the chamotte to obtain solution containing V and Mo in certain concentration, adding calcium salt and magnesium salt to eliminate P and other impurities, addingammonium salt solution into the clear solution to obtain ammonium metavanadate, decomposing and melting ammonium metavanadate to obtain V2O5 product; adding acid to the supernatant and organic phase extraction of Mo, ammonia water reverse extraction to obtain ammonium molybdate, and adding acid to precipitate ammonium tetramolybdate or molybdate product.

The invention relates to a flake MoS2/graphene composite aerogel and a preparation method thereof and belongs to the technical field of anode materials of lithium ion batteries. The preparation method comprises the following steps: ultrasonically dispersing a certain quantity of graphene oxide solution into deionized water, adding a certain quantity of water-soluble molybdate and thiourea, then adding 0.1-3mL organic amine solution, taking out a cylindrical product after hydrothermal reaction at the temperature of 160-240 DEG C, freeze-drying, and then carrying out thermal treatment for 2h in the mixed atmosphere of argon and hydrogen at the temperature of 800 DEG C to obtain the flake MoS2/graphene composite aerogel. According to the flake MoS2/graphene composite aerogel and the preparation method thereof disclosed by the invention, thin layers of graphene are connected with one another in a staggering mode to form a three-dimensional ordered conductive network and form micron pore canals, MoS2 is uniformly dispersed on the ultra-large superficial area, and thus, the problems of volume expansion and crushing materials are effectively solved; meanwhile, the structure stability and the cycle performance of the flake MoS2/graphene composite aerogel, serving as the anode material, are improved.

A hydroprocessing catalyst has been developed. The catalyst is a unique crystalline ammonia transition metal molybdate material. The hydroprocessing using the crystalline ammonia transition metal molybdate material may include hydrodenitrification, hydrodesulfurization, hydrodemetallation, hydrodesilication, hydrodearomatization, hydroisomerization, hydrotreating, hydrofining, and hydrocracking.

The invention discloses a method for preparing 2,5-furandicarboxylic acid from 5-hydroxymethyl furfural. Quaternary ammonium molybdate and quaternary ammonium tungstate are taken as a catalyst; oxygen gas, hydrogen peroxide or air is taken as an oxidant; the catalyst and the oxidant are heated to 80-120 DEG C under an alkali environment so as to carry out selective oxidization on 5-hydroxymethyl furfural. According to the method, ammonium salt and molybdic acid or tungstic acidis utilized to structurally regulate the activity of the catalyst and the selectivity of a product; the used catalyst is high in activity, easy to recycle and good in stability; the oxidant adopted in the oxidization process is environmentally-friendly, green and pollution-free; high yield and high selectivity of the 2,5-furandicarboxylic acid can be obtained at a low temperature; and a conversion rate of the 5-hydroxymethyl furfural is higher than 90%.

The invention discloses a method for separating and purifying vanadium and molybdenum of a waste vanadium-molybdenum SCR (selective catalytic reduction) catalyst. The method comprises the following steps: firstly, carrying out pretreatment on a catalyst to obtain a titanium slag and a vanadium-molybdenum solution; extracting and separating the vanadium-molybdenum solution, acidifying the obtained molybdenum-rich raffinate, and reprocessing to prepare a molybdenic acid product; carrying out reverse extraction on the obtained molybdenum-rich organic phase, then carrying out a two-stage extraction and vanadium purification process, and carrying out reverse extraction again to obtain a vanadium-rich solution; and reprocessing the vanadium-rich solution to prepare vanadium pentoxide. According to the method disclosed by the invention, the problem of difficult vanadium and molybdenum separation, recovery and purification of the waste vanadium-molybdenum SCR catalyst in industry is thoroughly solved; in addition, the recovery rates of vanadium and molybdenum exceed 95%; a high-purity (greater than 99%) molybdenic acid product and a vanadium pentoxide product of which the purity exceeds 99.5% can be respectively obtained; recycling of resources is really realized; and the method has good environmental and economic benefits, and is suitable for industrial popularization and application.

The invention relates to a graphene/silver molybdenum oxide compound visible-light catalyst and a preparation method thereof, in particular to a method for preparing the graphene/silver molybdenum oxide-combined visible-light catalyst by water and heat, belonging to the technical field of compound materials and photocatalysis. The preparation method comprises the following steps: taking graphene oxide, silver nitrate and ammonium heptamolybdate as raw materials according to certain proportion, mechanically stirring and mixing the raw materials uniformly in sequence, adjusting the pH value of solution, and then utilizing hydro-thermal reaction to prepare the graphene/silver molybdenum oxide compound visible-light catalyst. The photocatalytic degradation experiment shows that the graphene/silver molybdenum oxide compound visible-light catalyst prepared by the method has a good phtocatalytic degradation effect on rhodamine B due to the irradiation of the visible light and is ideal.

The invention provides a method for manufacturing a metal surface self-cleaning high-protection film. The method comprises two steps of molybdate solution soaking treatment and plant corrosion inhibitor-low-surface-energy material collaborative modification treatment. According to the molybdate solution soaking treatment step, a composite film which is of a specific micro/nano coarse structure, has the good protection effect and is composed of metallic oxides, molybdenum oxide and metal molybdate can be formed on a metal surface, and therefore according to the plant corrosion inhibitor-low-surface-energy material collaborative modification treatment step, efficient green plant corrosion inhibitors can be introduced into the film, and the protection effect can be obviously improved. Due to the hydrophobization effect of the low-surface-energy material on the film, the film has the self-cleaning function, the pollution can be avoided, the probability of direct contact of metal materials and corrosive media can be reduced, and the protection effect of the film can be further improved. The method has the advantages of being environmentally friendly, simple in process, convenient to operate, capable of being easily and industrially produced in a large-scale mode and the like.

The invention provides a preparation method and application of allulose. The preparation method comprises the following step: by adopting glucose as a raw material and adopting molybdate as a catalyst, performing catalytic conversion, separation and purification to obtain allulose with corresponding configuration. The method provided by the invention mainly comprises the following step: by adopting a chemical method, preparing a crystal allulose product by virtue of working procedures such as chemical differential phase isomerism, refined chromatography separation and purification, concentration and crystallization and the like by adopting glucose as the raw material. The preparation method provided by the invention is simple in process, short in time consumption, high in reaction speed and high in efficiency, and the problems that a conventional enzymatic method for preparing D-allulose products is poor in enzyme stability and low in efficiency and the like can be solved.

The invention discloses a method for preparing an orthorhombic phase molybdenum trioxide nano wire, which is characterized in that molybdate, molybdic acid or molybdenum trioxide is dissolved in aqueous solution with quadrol concentration of 0.2-6 mol/L to cause the mol ratio of molybdenum atom and quadrol to be 1:1-6; and then strong acid solution with hydrogen ion concentration of 0.5-3.0 mol/L is dropwise added under the condition of stirring till the pH value is within 4 to 5; the solution is unceasingly stirred for 10 to 30 min; then the white precipitation is sucked, filtered, washed and dried to obtain white orthorhombic phase single crystal nano wires with the diameter of 100 to 400 nm and the length of 10-40 Mum. In the method, the raw materials are easily obtained; the needed device is simple; the technique is convenient; the reaction can be finished in an hour in the normal temperature and pressure; the method is safe and easy to be controlled; the productive rate reaches more than 99 percent; the mother solution can be reused; and the method is applicable to large-scale industry production.

The invention discloses a method for preparing copper molybdate by using a cation membrane electrolysis method. A copper sheet serves as an anode; an inert electrode serves as a cathode; Na2MoO4.2H2O solution serves as anolyte; and solution with the pH range of 0-14 serves as catholyte. A cation membrane is adopted to electrolyze sodium molybdate solution, and the obtained product is dried after being cleaned. The dried product is roasted in high temperature to obtain pure copper molybdate crystals. The method uses the optimal effect of ion-exchange membrane electrolysis to transfer Na+ into a cathode chamber; the reaction time is short; no additive is added; the pure copper molybdate can be obtained; no impurity or impurity ion exist; and the subsequent treatment is simple. The method has the advantages of simplicity, easy operation and low investment cost, and can be directly applied to the industrialized batch production.

The invention discloses an environment-friendly copper clad laminate (CCL) for an LED (Light-Emitting Diode) monochrome display, a glue solution and a preparation method. The glue solution for a CCL comprises the following raw materials by mass: 400-500 parts of resin, 8-12 parts of curing agent, 0.2-0.3 part of curing accelerator, 100-120 parts of solvent, and an inorganic filler that includes one or more of talc powder, kaolin, magnesium hydroxide, aluminum hydroxide, zinc borate, zinc molybdate, magnesium oxide, calcium carbonate, calcium silicate, barium sulfate and boron nitride, wherein the inorganic filler accounts for 10%-70% of the total mass of the raw materials. According to the invention, the CCL is good in heat resistance, high in heat dissipation performance, low in organic content, environment-friendly during waste treatment, low in production cost, and suitable for industrial production.

The invention discloses a cobalt molybdate-graphene nano compound and a preparation method thereof. The method comprises steps of putting the oxidation graphite into water and ultrasonic dispersing; putting the cobalt salt into the system, stirring and dissolving; later putting the ammonium molybdate into the system and adjusting the pH; then transferring the mixture system into a water heating kettle to perform reaction; and when the reaction is ended, the product passes through separation, washing and dryness, and the cobalt molybdate-graphene nano compound is gained. The material is provided with broad application prospects in the field of energy and other electronic device fields.

The present invention discloses a method for preparing an electrode material molybdate for a super capacitor and the application thereof. The method comprises the steps of dissolving cobalt salt or nickel salt and sodium molybdate in a solution formed by water and oleylamine, carrying out hydrothermal reaction, carrying out centrifugation, washing and drying processing, carrying out calcinations under an inert atmosphere, and carrying out grinding to obtain powder to obtain a carbon-coated molybdate super capacitor electrode material. The carbon-coated cobalt molybdate or nickel molybdate electrode material prepared by the preparation method is applied to the super capacitor, and the method has the advantages of simple synthesis process, good repeated performance and mass production.

The invention relates to the technical field of the nanometer material, and relates to a method for synthesizing the porous molybdenum carbide nanometer wire, and adopts the following steps: molybdate is dissolved in the water, and the mol concentration of the molybdenum atom is 0.02 to 1.5 mol/L; organic amine is filled in, and the mol ratio between the organic amine and the molybdenum atom is 20.0 to 1.0: 1; inorganic acid is dropped into the solution, and the pH value is adjusted to be 3 to 6 until the white precipitate appears; the reaction solution is moved into an oil bath with the temperature of 30 to 60 DEG C to be reacted for 6 to 24 hours; (5) the product is washed, pumped, filtered and dried; the product is baked in the inert gases atmosphere at the temperature of 675 to 750 DEG C for 4 to 10 hours. The invention has the advantages that abundant nanometer hole structure is arranged between the nanometer particles, the granularity of the molybdenum carbide is small, the molybdenum carbide has rich porous structure and large specific surface area, the carbon on the surface is small, thereby favoring the secondary assembling of the catalyst and having wide application fields; the productivity can reach 95 percent or more; the conditions are simple and easy to be controlled; the preparation efficiency is high; the invention has favorable application and industrialization prospect.

Aqueous polishing slurries for chemical-mechanical polishing are effective for polishing copper at high polish rates. The aqueous slurries according to the present invention may include soluble salts of molybdenum dissolved in an oxidizing agent and molybdic acid dissolved in an oxidizing agent. Methods for polishing copper by chemical-mechanical planarization include polishing copper with low pressures using a polishing pad and a aqueous slurries including soluble salts of molybdenum dissolved in an oxidizing agent and molybdic acid dissolved in an oxidizing agent, particles of MoO₃ dissolved in an oxidizing agent, and particles of MoO₂ dissolved in an oxidizing agent.

The invention relates to a method for recycling the high purity molybdenum from the molybdenum bearing spent catalyst. The method comprises the steps that the molybdenum bearing spent catalyst is roasted and comminuted, then the molybdenum bearing spent catalyst is leach and filter by adopting alkaline solution bearing ammonia, ammonium bicarbonate and oxyful, and the secondary roasting and leaching are performed to the solids after filtration, the twice leaching solution is acidified and the aluminum is precipitated out, then is acidified continuously to precipitate out the molybdenum in the form of molybdic acid, the molybdic acid is dissolved by using ammonia water further, the pH value is adjusted again to obtain ammonium molybdate deposition, and the ammonium molybdate product is obtained after dryness. The method is particularly suitable for the process for extracting the high purity ammonium molybdate with the aluminum based molybdenum-bearing spent catalyst, the operation is simple, the operability is better, and the quality of the prepared product is stable.

The invention discloses a heteropolyacid and oxide compound catalyst for preparing methacrylic acid through oxidation of methylacrolein. The preparation method of the catalyst comprises the following steps: mixing phosphomolybdic acid and metallic oxide (such as vanadium pentoxide, ferric oxide, cupric oxide, nickel oxide, manganese dioxide, cobaltous oxide, titanium dioxide and zinc oxide) in a liquid phase step by step so as to form relatively large amount of active sites on the surface of heteropolyanion; adding caesium to obtain the catalyst. The catalyst has high catalytic activity for preparing methacrylic acid through oxidation of methylacrolein and has a long catalyst service life.