81 results about "Phosphomolybdic acid" patented technology

The invention discloses nanoparticles for synergistically treating tumors and a preparation method of the nanoparticles, and relates to the technical field of preparation of drugs containing inorganic active ingredients. The nanoparticles are composite nanoparticles Mo-PDA prepared by mixing and reacting inorganic active ingredients of phosphomolybdic acid Mo-POM and dopamine; the preparation method comprises the following steps: taking Mo-POM (phosphomolybdic acid), then loading Mo-PDA-coated GOx nanoparticles with a spherical structure formed by glucose oxidase (GOx), and carrying out mixing reaction by taking Mo-POM, adding deionized water, then adding dopamine, continuously stirring for 1 hour, and continuously reacting for 14-18 hours at the temperature of 150-170 DEG C. According to the preparation method disclosed by the invention, PDA is combined with Mo-containing polyacid salt and externally loaded with glucose oxidase (GOx), so that the PTT-modified CDT-hunger nanoparticle Mo-PDA-GOx for cooperatively treating tumors is synthesized, and the PTT-modified CDT-hunger nanoparticle Mo-PDA-GOx has excellent photo-thermal conversion efficiency which reaches 67.2%. The nanoparticles effectively exert synergistic treatment, and the treatment effect on tumors is improved.

The invention belongs to the technical field of battery materials, and particularly relates to a method for determining iron phosphide in a phosphate positive electrode material, the positive electrode material and application. Comprising the following steps: preparing standard solutions of a series of phosphate positive electrode materials with different iron phosphide contents; respectively collecting and purifying magnetic substances in the standard solutions, and adding a quimocilidone reagent to determine the corresponding quinoline phosphomolybdate precipitate; drawing a standard curve according to the mass of the iron phosphide and the mass of the quinoline phosphomolybdate precipitate in the standard solutions with different iron phosphide contents; preparing a to-be-detected solution, collecting and purifying magnetic substances in the to-be-detected solution, adding a quinmolybdenum citronone reagent to determine the mass of the quinoline phosphomolybdate precipitate, and calculating the content of iron phosphide in the to-be-detected phosphate positive electrode material. By means of the method, the content of trace iron phosphide in the phosphate positive electrode material can be efficiently, accurately and quantitatively analyzed, the content of iron phosphide in the phosphate positive electrode material can be quantitatively regulated and reduced, and the electrochemical performance of the phosphate positive electrode material is improved.

The invention discloses a preparation method of a metal organic framework catalyst and application of the metal organic framework catalyst in biomass furfural hydrogenation, and belongs to the technical field of catalytic hydrogenation. The preparation method of the metal organic framework catalyst comprises the following steps: S1, dissolving cobaltous acetate, L-glutamic acid and phosphomolybdic acid in distilled water to obtain a solution marked as a solution A; dissolving 1, 3, 5-benzenetricarboxylic acid (BTC) in ethanol to obtain a solution B, pouring the solution B into the solution A, stirring, and centrifuging to collect a precipitate; and S2, calcining the precipitate in an inert atmosphere to obtain the metal organic framework catalyst. The specific steps of applying the catalyst to the furfural hydrogenation reaction are as follows: adding the prepared catalyst and furfural into deionized water, performing heating and pressurizing reaction through a hydrogenation reaction kettle to obtain a solution, extracting the solution with ethyl acetate, and performing GC quantitative detection on the product after the extraction reaction. The method is mild in reaction condition, has an efficient furfural hydrogenation effect, and can completely convert FFA within 2 hours under the condition that 50 mg of catalyst is added.

A method for synergistically improving the photoelectric efficiency and stability of PSCs based on phosphomolybdic acid@gamma-cyclodextrin host-guest composite material belongs to the technical field of perovskite solar cells. The present application solves the problems of poor photoelectric efficiency and stability of existing PSCs, and solves the problems of poor compatibility of existing POMs with perovskite system and easy aggregation of POMs in the process of perovskite defect passivation, which leads to low utilization rate of passivation sites. Preparation: I, PMo 12 @gamma-CD host-guest composite material; II, preparation of PMo 12 @gamma-CD modified perovskite precursor solution; III, preparation of PSCs. The present application is used for synergistically improving the photoelectric efficiency and stability of PSCs based on phosphomolybdic acid@gamma-cyclodextrin host-guest composite material.

This invention relates to the field of electroplating solution analysis technology, and in particular to a rapid analytical method for polyethylene glycol (PEG) additives in copper electrodeposition solutions. The method involves protonated PEG forming a macromolecular complex colloid with phosphomolybdate under acidic conditions of pH 1.0–2.0. This colloid exhibits maximum absorption at 372 nm, and the absorbance value is directly proportional to the PEG concentration in the formed complex colloid. This allows for quantitative analysis of PEG in the copper electrodeposition solution. Because the phosphomolybdate-PEG complex colloid selected in this invention has excellent selectivity, and no sample pretreatment is required, this invention offers advantages such as ease of operation, speed, high sensitivity, and good selectivity. It is particularly suitable for intermediate control analysis in production environments, such as for electroplated copper interconnects in chips and printed circuit boards, as well as electrolytic copper foil for negative electrode current collectors and copper-clad laminates in energy storage batteries.

The invention belongs to the technical field of water electrolysis hydrogen production catalysts, and relates to a metal monatomic hydrogen evolution catalyst and a preparation method thereof.The catalyst comprises a large number of metal monatomic and a small number of metal clusters, metal is in an oxidation state in the catalyst, and crystalline PMA exists in the catalyst; c60 and PMA structures coexist in the catalyst; the preparation method comprises the following steps: respectively dissolving an acetylacetone metal complex, phosphomolybdic acid and fullerene in a toluene solution of a 4A type molecular sieve, respectively and sequentially mixing, magnetically stirring, washing and centrifuging to obtain the metal monatomic hydrogen evolution catalyst; the metal monatomic hydrogen evolution catalyst disclosed by the invention has excellent HER performance, a PMA-M-C60 catalyst with high loading capacity and high dispersion of metal monatomic bridging C60 and PMA is realized through a room-temperature synthesis strategy, and the catalysis cost is lower.

The invention discloses a method for rapidly detecting acrylamide in food by using a fluorescent probe, which comprises the following steps of: synthesizing copper and iron-containing phosphomolybdic acid nano-enzyme (Cu, Fe-PMos) with peroxidase-like nano-enzyme activity by using phosphomolybdic acid, copper chloride and ferric chloride as precursors through a microwave method, catalyzing xanthol to react with HCl to generate a fluorescent derivative by using the Cu and Fe-PMos, and detecting the acrylamide in the food by using the fluorescent probe. When acrylamide is added into a fluorescent system, reaction of xanthene alcohol and acrylamide is carried out to generate a xanthene acrylamide fluorescent substance, reaction of Cu, Fe-PMos and xanthene alcohol is inhibited, and the fluorescence intensity of the system is reduced, so that a fluorescent probe rapid detection method of acrylamide is established. Other coexisting substances do not interfere with each other, the detection limit reaches 0.01 mu g / mL, and the method has the characteristics of high sensitivity, strong specificity, simplicity and rapidness in operation and the like.

The present application belongs to the technical field of electrolytic copper foil manufacturing, and particularly relates to a HVLP copper foil with low surface roughness and a preparation method thereof. The preparation method comprises the following steps: electrolytic foil growth, vacuum annealing treatment, electrochemical grain boundary pinning treatment, surface treatment and drying and slitting. The vacuum annealing treatment is performed after the electrolytic foil growth and before the surface treatment, so as to eliminate the residual stress in the copper foil; the electrochemical grain boundary pinning treatment adopts a silicon tungstate or phosphomolybdate electrolyte, and introduces tungsten or molybdenum elements at the grain boundary of the copper foil to form a pinning layer; in the surface treatment, the roughening treatment adopts pulse current and adds grain nano-refining additives, the solidification treatment is performed in a solidification liquid containing a rare earth salt, and the silane coupling agent treatment adopts a complex treatment liquid of KH-560 and a long-chain alkyl silane coupling agent. The obtained HVLP copper foil has a roughness Rz of the rough surface of less than or equal to 0.8 microns, high initial peel strength, a peel strength retention rate of more than 80% after hygrothermal aging, and good long-term service stability.

The invention discloses a preparation method of a copper-based phosphomolybdic acid nanocluster electrode material for nitrate reduction. The preparation method comprises the following steps: (1) dissolving Na2MoO4 2H2O in purified water, and adding concentrated hydrochloric acid and concentrated phosphoric acid; refluxing the mixed solution in an oil bath, adding an NH4CI precipitant, carrying out reduced pressure filtration and air drying to obtain a yellow powdery crude product, dissolving the crude product in purified water at 70 DEG C, slowly evaporating the solution at room temperature, and carrying out reduced pressure filtration to obtain a (NH4) 6P2Mo18O82. 14.2 H2O crystal product; and (2) dissolving the (NH4) 6P2Mo18O62. 14.2 H2O crystal product in deionized water, stirring, transferring into a polytetrafluoroethylene reaction kettle, immersing the treated foamy copper into a solvent, cooling to room temperature, taking out, washing with deionized water and absolute ethyl alcohol, and drying in a vacuum drying oven to obtain the copper-based phosphomolybdic acid nanocluster electrode material. According to the method, in-situ growth of the copper-based phosphomolybdic acid nanocluster on the foamy copper is realized.

The application discloses a preparation method of a rice hull silica supported phosphomolybdic acid catalyst, which comprises the following steps: (1) dispersing phosphomolybdic acid in an organic solvent; (2) immersing a rice hull silica carrier in the dispersion liquid obtained in the step (1); (3) removing the dispersion liquid which is not absorbed by the rice hull silica to obtain a muddy mixture; (4) heating and drying the product obtained in the step (3) to gradually volatilize the organic solvent, and uniformly dispersing the phosphomolybdic acid on the surface of the rice hull silica substrate; and (5) further heat treating the product obtained in the step (4) to obtain the rice hull silica supported phosphomolybdic acid catalyst. The application does not need to additionally modify the rice hull silica carrier, and the distribution of molybdenum in the obtained catalyst is more uniform.

The invention discloses a method for promoting sludge dewatering by utilizing low-temperature heating under an acidic condition in cooperation with POM (polyoxymethylene), which comprises the following steps: firstly, heating activated sludge to be treated to a set temperature, adding phosphomolybdic acid into the activated sludge under a stirring condition, then adding dilute sulphuric acid to adjust the pH value to 2.0-7.0, and reacting under the stirring condition, according to the method disclosed by the invention, phosphomolybdic acid and low-temperature heat are used for cooperatively treating the sludge, and through the synergistic effect of acidic catalysis and thermally induced structure relaxation, the oxidative cracking of an extracellular polymeric substance (EPS) and the dissolution of organic matters in sludge floc are synchronously realized; the technical bottlenecks that the reaction path is limited and the energy utilization efficiency is low in the traditional single chemical oxidation or thermal conditioning process are broken through.

The application discloses a preparation method of polyglycerol and belongs to the technical field of fine chemical synthesis; in the preparation method of polyglycerol, polystyrene microspheres loaded with phosphomolybdic acid and gallium oxide are introduced as a solid acid catalyst, the phosphomolybdic acid, the gallium oxide and the polystyrene microspheres can interact with each other, so that the reaction efficiency of glycerol polymerization is remarkably improved, and further by controlling the reaction temperature and the reaction time, the polyglycerol with high purity and high yield can be synthesized; and the polyglycerol obtained has light color and high quality. Meanwhile, in the preparation method, the reaction temperature is relatively low, the energy consumption is small, the solid acid catalyst used can be separated by filtration and recycled, the green and environmental protection effect is achieved, and in addition, in the preparation method, no toxic, harmful or highly corrosive substances are used, so that the safety in the preparation process can be effectively ensured.

The invention discloses a molybdenum-based nitride catalyst prepared based on assistance of carbon sphere confinement polyacid and a method and application of the molybdenum-based nitride catalyst, and belongs to the technical field of water electrolysis hydrogen production catalytic materials. According to the method, glucose serves as a carbon source, carbon nanospheres are synthesized through a hydrothermal method, polyacid (such as phosphomolybdic acid) is introduced to serve as a molybdenum source, and a carbon sphere composite structure with the built-in molybdenum source is formed; then compounding with a transition metal salt solution, drying and grinding to obtain a homogeneous precursor; and finally, nitriding in an ammonia gas atmosphere to convert metal species in situ to obtain the molybdenum-based nitride nanosphere with the hierarchical structure. According to the method disclosed by the invention, accurate regulation and control on material composition, crystal phase and pore structure are realized by regulating and controlling a metal proportion and a nitriding process, and the obtained catalyst has a hierarchical porous structure, high conductivity and fully exposed active sites, shows high catalytic activity and stability in hydrogen evolution and oxygen evolution reactions by electrolysis of water, is suitable for the field of energy conversion, and has wide application prospects. And the method has a good large-scale application prospect.

The invention belongs to the technical field of radioactive waste treatment, and particularly relates to an ammonium phosphomolybdate template adsorbent for removing Cs-137 and a preparation method of the ammonium phosphomolybdate template adsorbent. The method mainly comprises the following two steps: firstly, synthesizing a cesium phosphomolybdate precursor by using a dry method or a wet method, creating a site similar to Cs < + > in shape and size in an adsorbent, and reducing the steric effect in the adsorption process, so that the adsorption selectivity is improved; and then reacting a high-concentration ammonium chloride solution with cesium phosphomolybdate to replace the Cs element with ammonium so as to prepare the ammonium phosphomolybdate template adsorbent taking Cs < + > as the template. The adsorbent can be applied to adsorption removal of Cs-137 nuclide in water. Compared with a non-templated adsorbent, the template adsorbent has significantly enhanced adsorption selectivity and increased adsorption capacity when more competitive ions coexist in a high-salt system.

The invention relates to a flame-retardant smoke-suppressing PVC (polyvinyl chloride) composite material as well as a preparation method and application thereof, and belongs to the technical field of compositions of high-molecular compounds. The flame-retardant and smoke-suppressing PVC composite material comprises PVC resin, a plasticizer, a stabilizer, a lubricant and a flame-retardant and smoke-suppressing agent, the flame-retardant smoke suppressant is a mixture of at least one of aluminum hydroxide and magnesium hydroxide and a rare earth metal compound; wherein the rare earth metal compound comprises at least one of cerium phosphomolybdate (CePMo12O40) and lanthanum phosphomolybdate (LaPMo12O40). The PVC composite material has excellent flame retardance and smoke suppression performance.

The application discloses a red dye solution, a reagent combination and a method for Masson trichrome staining, and belongs to the field of histochemistry technology. The red dye solution comprises 0.4-1.0% of bibracine, 0.4-1.0% of temptation red and 1-2% of acetic acid, and water is used as a solvent, and the red dye solution further comprises 0.05-0.15% of orange G sodium salt; the reagent combination comprises the red dye solution and further comprises a blue dye solution, the blue dye solution comprises 2% of aniline blue, 1-2% of acetic acid, and water is used as a solvent, and the blue dye solution further comprises 0.005-0.03% of fast green, 0.0025-0.015% of brilliant green or 0.005-0.03% of bromocresol green sodium salt. The reagent combination further comprises hematoxylin dye solution, red differentiation agent and blue differentiation agent. The improved red dye solution for Masson trichrome staining provided by the application increases the affinity for muscle fiber dyeing, makes the muscle fiber dyeing more firm, and can still maintain bright red after phosphomolybdic acid differentiation. Meanwhile, the improved blue dye solution makes the collagen fiber dyeing more bright, and the color contrast between the muscle fiber and the collagen fiber is more obvious and easier to distinguish.

This invention discloses a polyacid-modified hydroxy boron nitride nanosheet, its preparation method, and its application. The preparation is carried out according to the following steps: (1) preparation of hydroxy boron nitride nanosheets, (2) synthesis of organic heteropolyacid salt compounds, (3) preparation of sodium tetrabutylphosphomolybdate, and (4) preparation of polyacid-modified hydroxy boron nitride nanosheet composite materials. This invention provides a simple, mild, and highly pure and dispersible method for preparing polyacid-modified hydroxy boron nitride nanosheets. It solves the technical problems of poor solution dispersibility, low product purity, and inability to prepare on a large scale in practical applications of h-BN.

The invention relates to the technical field of anti-interference sensibilization total phosphorus determination, and discloses an anti-interference sensibilization total phosphorus determination method and a special chromogenic reagent thereof, in the special chromogenic reagent, ascorbic acid with a concentration of 10% ensures sufficient reducing ability, can efficiently reduce phosphomolybdenum heteropoly acid into phosphomolybdenum blue, enhances the sensitivity of a chromogenic reaction, and has good stability. According to the method, low-concentration total phosphorus can also be accurately detected, the detection capacity of the method on trace phosphorus is improved, molybdate and ammonium molybdate react with orthophosphate to generate phosphomolybdic heteropoly acid, and antimony potassium tartrate serves as a catalyst to accelerate the reaction rate, improve the color development efficiency, shorten the reaction time, guarantee the reaction sufficiency and improve the detection efficiency. The chelating agent can be complexed with various metal ions such as iron, copper, calcium and magnesium in a water sample, interference of the metal ions on chromogenic reaction is effectively eliminated, a reaction system is stabilized, the anti-interference capability of the determination method is remarkably improved, and the method is suitable for complex water samples.

This invention relates to the field of phosphomolybdate catalyst technology, specifically disclosing a phenylphosphine-functionalized phosphomolybdate, a photoelectric sensor, its preparation method, and its application. The molecular formula of the phenylphosphine-functionalized phosphomolybdate is: [Na2(bib)2(H2O)3]{Fe[Mo6(PO3C6H5)4O 15 H5]2}·2H3O, where bib is 4,4'-bis(1H-imidazol-1-substituted)-1,1'-biphenyl. The phenylphosphine-functionalized phosphomolybdate provided by this invention possesses excellent photocatalytic and electrocatalytic activity. Photoelectric sensors prepared from it exhibit outstanding electrochemical sensing performance, including high sensitivity, wide linear range, low detection limit, and rapid response. Furthermore, they demonstrate good cycling stability and anti-interference ability, showing broad application prospects in the dual-function detection of trace and ultra-trace amounts of Cr(VI) and LVF.

The invention discloses a molybdenum and phosphorus co-doped H-ZSM-5 molecular sieve catalyst as well as a preparation method and application thereof, the catalyst takes an H-ZSM-5 molecular sieve as a main body framework, and molybdenum and phosphorus are co-doped into the H-ZSM-5 molecular sieve in situ; the preparation method comprises the following steps: uniformly mixing tetrapropylammonium hydroxide, tetraethoxysilane, isopropanol, urea, aluminum nitrate nonahydrate, sodium hydroxide, deionized water and phosphomolybdic acid, performing hydrothermal synthesis reaction, and sequentially performing cooling, centrifuging, washing, drying, grinding, roasting, ion exchange, grinding and roasting on a product obtained by hydrothermal synthesis. The molybdenum and phosphorus co-doped H-ZSM-5 molecular sieve catalyst is obtained; phosphomolybdic acid is introduced in situ by using a hydrothermal synthesis method to realize atomic-scale uniform distribution of molybdenum and phosphorus elements, and high crystallinity and pore regularity of the molecular sieve are guaranteed by combining a slow heating design; the introduced molybdenum and phosphorus can accurately adjust the distribution of acidic sites and optimize the pore structure, inhibit the generation of side reactions such as deep cracking and optimize the mass transfer efficiency, and realize efficient catalysis of various long-chain hydrocarbons and mixed feeding systems.

The application discloses a method for extracting beta-sitosterol, comprising the following steps: collecting spore powder of aspergillus niger after fermentation by using wheat bran, and preparing the spore powder into fungus powder by using a spray dryer for standby; obtaining an aspergillus niger spore powder extract by reflux extraction with the fungus powder and acetone; performing vacuum concentration, petroleum ether extraction, and vacuum concentration again until the petroleum ether is dried to obtain a crude extract; performing silica gel column chromatography; performing silica gel column chromatography again; performing silica gel column chromatography again, observing color development of 5% concentrated sulfuric acid ethanol solution and 0.8% phosphomolybdic acid ethanol solution according to thin layer chromatography analysis, selecting fractions with the same point and Rf value, and combining the fractions; performing vacuum concentration until the organic solvent is dried; selecting fractions with Rf values of 0.3-0.5 under the development condition of petroleum ether: ethyl acetate = 5:1, and performing recrystallization in a mixed solvent of ethyl acetate:methanol = 1:50; and collecting crystals after crystallization to obtain beta-sitosterol. The substrate is cheap and easy to obtain, the extraction process is simple and easy to implement, the production process is environmentally friendly, solvent residue is small, pollution is low, and culture medium is easy to obtain.

This invention provides a selective hydrogenation catalyst for hydroxy esters and its preparation method. The catalyst comprises an active component Cu and an auxiliary component X. n+ Metal, carrier, and surface alkalinity regulating agent; the X n+ The metal is one or more of Al, Zn, Ho, Ga, Y, Ce, and In; the support is a composite of SiO2 and ZrO2; the surface alkalinity regulating agent is one or two of phosphotungstic acid, phosphomolybdic acid, silicotungstic acid, silicotomolybdic acid, zirconium hydrogen phosphate, HZSM-5, and Hβ acidic molecular sieves; the mass percentages of each component of the catalyst are as follows: active component oxide CuO 30-70 wt%, and auxiliary component oxide XO n / 2 The catalyst contains 3-20 wt% SiO2 and 15-65 wt% support, with a SiO2 to ZrO2 mass ratio of 0.5-10:1, and 0.2%-5 wt% surface alkalinity regulating agent. The catalyst prepared by this invention is beneficial for generating highly dispersed copper silicate species and improving the activity of Cu. 0 The improved dispersibility enhances the surface Lewis acidity sites while reducing the surface basicity sites, resulting in excellent hydroxy ester hydrogenation activity, selectivity, and stability of the catalyst, demonstrating promising prospects for industrial applications.

The application provides a method for separating and recovering sulfides in diesel oil, and relates to the technical field of diesel desulfurization. The method comprises the step of oxidizing desulfurization of diesel oil and an oxidizing agent under the action of a molybdenum-based catalyst. The molybdenum-based catalyst is prepared by heating and dissolving phosphomolybdic acid and triethylene glycol monomethyl ether as raw materials at 80-110 DEG C. The molar ratio of the phosphomolybdic acid and the triethylene glycol monomethyl ether is 1:3000. The method is simple. The liquid molybdenum-based catalyst obtained by heating and dissolving phosphomolybdic acid (PMA) and triethylene glycol monomethyl ether (TEGOCH3) as raw materials is used for oxidizing desulfurization. The dibenzothiophene sulfides can be efficiently removed in a short time. The diesel desulfurization efficiency and desulfurization rate are improved. The ultra-deep desulfurization of diesel oil and the efficient conversion and recovery of sulfides are realized.

The application discloses a preparation method of a self-supporting electrode of a heteropoly acid derived high-valence metal and strong electronegative nonmetal co-doped nickel sulfide and electrocatalytic application, and belongs to the technical field of electrocatalytic material synthesis. The application uses phosphomolybdic acid as a precursor, and utilizes the advantages of solubility, small size and simultaneous containing of fixed proportions of high-valence metal Mo and strong electronegative nonmetal P to prepare a P and Mo co-doped Ni3S2 catalyst with atomic level dispersion. The strategy has the advantages of simple process, wide condition and low cost, and the prepared catalyst shows excellent electrocatalytic urea oxidation performance and has high practical application value.

The invention discloses preparation of a metal organic framework catalytic material and application of the metal organic framework catalytic material in radiation activation CO2 catalytic reduction. The preparation comprises the following steps: synthesizing a metal organic framework UiO-66; the phosphomolybdic acid is loaded on the metal organic framework UiO-66 to obtain the metal organic framework catalytic material. Aiming at the problem of low CO2 conversion rate in a plasma-driven CO2 and H2O reaction system, the metal organic framework catalytic material is successfully prepared, and activation and conversion of CO2 are effectively enhanced. Under normal-temperature and normal-pressure plasma reaction conditions, the phosphomolybdic acid / UiO-66 catalytic system realizes 17.78% of CO2 conversion rate which is increased by about 3 times compared with an unmodified material system and is about 6 times of that of a control group only using plasma, the key effect of a hydrogen bond microenvironment is further proved, the quenching effect of gas-phase water molecules on the plasma-induced CO2 dissociation process is effectively inhibited, and the CO2 dissociation efficiency is improved. And the free energy barrier of reducing CO2 into * COOH is reduced, so that the reaction kinetics of converting CO2 into CO is accelerated.

The invention provides a composite material, a preparation method thereof and an aluminum-sulfur battery, and belongs to the technical field of battery materials. The composite material comprises a composite carrier and elemental sulfur loaded on the composite carrier, the composite carrier comprises a carbon carrier and a PMo12-based metal organic framework growing on the carbon carrier, and the PMo12-based metal organic framework comprises a metal organic framework with a pore structure and phosphomolybdic acid encapsulated in the pore structure. The composite material provided by the invention has excellent conductivity, high sulfur loading capacity, strong polysulfide anchoring capability and efficient sulfur conversion catalytic activity, and is beneficial to improving the cycle performance of the battery.

The invention discloses a high-scratch-resistance automobile armrest coating part and a preparation process thereof, and relates to the technical field of automobile armrest coating parts. Double bonds in the modified ethylene propylene diene monomer and 3-thiohydracrylic acid are subjected to a thiol-ene click reaction, so that the dynamic fatigue performance is improved; carboxyl is introduced to react with epoxy groups to construct an efficient cross-linked network, so that the compatibility is improved, and the mechanical property is remarkably enhanced; dicumyl peroxide is decomposed to generate free radicals, the free radicals and a modified ethylene propylene diene monomer molecular chain form a high-density cross-linked network, the elasticity and heat resistance of the material are improved, meanwhile, modified ethylene propylene diene monomer particles are dispersed in a thermoplastic elastomer matrix, and the scratch resistance is remarkably improved. Modified boron nitride is added, phosphomolybdic acid and guanidine phosphate are subjected to electrostatic adsorption to form an intumescent flame-retardant synergistic layer, and in addition, an inorganic filler and a flame retardant enhance rigidity and flame retardance; and the ethylene-zinc acrylate ionomer can improve the adhesion and the scratch resistance. The product can be widely applied to the field of automobile industry.

The invention discloses a blue-white passivation solution for neodymium iron boron electrogalvanizing and a passivation method, and belongs to the technical field of electroplating processes. The passivation solution comprises the following raw materials: 3-6 g / L of a trivalent chromium compound, 3-6 g / L of soluble cerium salt, 1-2 g / L of soluble titanium salt, 3-5 g / L of phosphomolybdic acid, 2-4 g / L of polyaspartic acid, 0.5-1 g / L of cobalt nitrate, 0.3-0.6 g / L of benzotriazole, 1.5-2.5 g / L of sodium silicate, 4-6 g / L of sodium nitrate, 1-5 g / L of organic carboxylic acid, 1.5-3 g / L of ascorbic acid, 0.05-0.1 g / L of a nonionic surfactant and water as a solvent, and the pH is adjusted to 2.5-3.5 by a pH regulator. The neodymium iron boron material subjected to electrogalvanizing is subjected to dipping passivation treatment, tetravalent cerium formed through cerium salt oxidation in a passivation solution is deposited on a film layer under the strong chelation effect of polyaspartic acid, and a passivation film has the self-repairing capacity and is high in corrosion resistance.

The invention belongs to the technical field of catalysts, and particularly relates to a palladium-polyoxometallate cluster-cluster catalyst as well as a preparation method and application thereof. The palladium-polyoxometallate cluster-cluster catalyst is formed by self-assembly of a sub-nanometer Pd cluster derived from a palladium precursor and polyoxometallate, and the polyoxometallate is phosphotungstic acid (PW12), phosphomolybdic acid (PMo12), undecanoyl molybdenum-vanadium phosphate (PMo11V1), decamolybdenum divanadium phosphate (PMo10V2) or non-molybdenum trivanadium phosphate (PMo9V3). The invention provides a stable palladium-polyoxometallate self-assembled cluster-cluster catalyst which is prepared in one pot, has sub-nano Pd clusters and is used for preparing ketone through low-temperature, low-pressure and high-selectivity hydrogenation.

This invention discloses a highly efficient catalytic synthesis method for isooctanoic acid, belonging to the field of isooctanoic acid preparation technology. The highly efficient catalytic synthesis of isooctanoic acid includes the following steps: N1: Mixing n-butyraldehyde and a bifunctional solid catalyst, introducing hydrogen gas, and heating to 110-130℃ for 5-7 hours, followed by post-treatment to obtain isooctaldehyde; adding a phosphomolybdate catalyst to isooctaldehyde, introducing air, stirring, and heating to 50-60℃ for 3-5 hours, followed by post-treatment to obtain isooctanoic acid; the bifunctional solid catalyst is Ni / MgO-TiO2; the phosphomolybdate catalyst is Cs. 1.5 H 1.5 PMo 12 O 40 @SiO2. The preparation process of isooctanoic acid in this invention exhibits good n-butyraldehyde conversion and yield, and the catalyst is easily recovered and reused, which is beneficial for industrial conversion applications.