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76 results about "Phenylphosphonic acid" patented technology

Proton exchange membrane for medium-temperature fuel cell and preparation thereof

The invention relates to a proton exchange membrane of fuel cells which can be used at medium temperature, which is a proton exchange membrane doped with sulfonated phenyl zirconium phosphonic acid. The proton exchange membrane is characterized in that the membrane preparing materials consist of sulfonated high molecular material and sulfonated phenyl zirconium phosphonic acid salts, wherein, the degree of sulfonation of sulfonated high molecular material selects 20 percent to 85 percent and accounts for 60 percent to 95 percent of the weight percentage of the membrane preparing material; and the degree of sulfonation of sulfonated phenyl zirconium phosphonic acid salts selects 30 percent to 90 percent accounts for 5 percent to 40 percent of the weight percentage of the membrane preparing material. Porous supporting materials can also be added into the membrane so as to improve strength of the membrane and reduce the deformability. The membrane preparing materials fill pores with the porous supporting materials and form a layer of membrane at the outer surface of the porous supporting materials. The invention is applicable to medium-temperature alcohol fuel cells so as to improve operating temperature of the fuel cells and improve the performance of the fuel cells.
Owner:SHANDONG UNIV OF TECH

Cobalt-nickel bimetal phosphate flower-like microsphere electrocatalyst and preparation method thereof

InactiveCN109894128AHigh specific surface areaSpecial three-dimensional flower-like microsphere structurePhysical/chemical process catalystsElectrodesMicrospherePhosphate
The invention discloses a cobalt-nickel bimetal phosphate flower-like microsphere electrocatalyst and a preparation method thereof. The preparation method comprises the steps of adjusting PH with urea, and slowly synthesizing cobalt-nickel bimetal organic phosphoric compound flower-like microsphere precursor CoNiPP; carrying out high temperature treatment at different temperatures to obtain the cobalt-nickel bimetal phosphate flower-like microsphere electrocatalyst which still well retains the flower-like microsphere structure of the precursor and which has a structural general formula of CoNiPP-T, with T=700-900 DEG C. The flower-like microsphere structure helps effectively increase specific surface area and porosity of a material, thereby adding more transfer channels of internal electrons during electrocatalytic reaction; organic benzene rings in phenylphosphonic acid are removed and decomposed by calcining to obtain a porous carbon coating layer, so that the quantity of active sites for electrocatalytic reaction can be increased. In addition, double metals are present, each metal corresponds to a different active site, and therefore, the quantity of active sites for electrocatalytic reaction can also be increased.
Owner:淮安新能源材料技术研究院

Aluminium-alloy chromium-free in-situ phosphating liquid and preparation method thereof

The invention discloses an aluminium-alloy chromium-free in-situ phosphating liquid and a preparation method thereof. The luminium-alloy chromium-free in-situ phosphating liquid comprises the compositions in percent by mass: 1-5% of phenylphosphonic acid, 0.1-0.3% by tartaric acid, 0.1-0.3% of citric acid, and the balance an organic wetting dispersant and organic paint. Phenylphosphonic acid is taken as the main composition of an in-situ phosphating agent, tartaric acid and citric acid are taken as organic additives, and the phosphating liquid does not contain nitrites, does not contain nickel ion and chromium ion, and is free of pollution to environment. Phenylphosphonic acid and the organic paint form a stable uniformly-mixed film-forming substance, and an organic coating is formed on the surface of an aluminium alloy base body, so that metal phosphating processing and coating of the organic coating are combined, multiple coating operations are simultaneously finished in one process, and the economic cost of the multi-step coating technology and the operation complexity are effectively reduced. Operations of phosphating processing and chromate sealing are reduced, time, energy, resource and labor force are saved, discharge of toxic substances is reduced, and the preparation method is a green clean technology. Additionally, the preparation method is simple, convenient to operate and use, and free of technological difficulty.
Owner:XINXIANG UNIV

Dry lithium battery separator and preparation method thereof

The invention belongs to the technical field of lithium battery separators, and particularly relates to a dry lithium battery separator and a reparation method thereof. The lithium battery separator comprises a core layer and surface layers disposed on both sides of the core layer, wherein the core layer comprises 93.8-97% of polyethylene, 2.5-5% of polybutylene terephthalate, and 0.5-1.2% of phenylphosphonic acid metal salt, and the percentage composition is the percentage by weight; the surface layers comprise 91.5-96.2% of polypropylene, 3-7% of polybutylene terephthalate, and 0.8-1.5% of phenylphosphonic acid metal salt, and the percentage composition is the percentage by weight. The dry lithium battery separator provided by the invention, by introducing incompatible polybutylene terephthalate into a three-layer composite structure of polypropylene/polyethylene/polypropylene, promoting the formation of micronized crystals, and forming a microporous structure with high porosity andupper and lower penetrating micropores through a biaxial stretching process, is completely different from the traditional micropore preparation technology, which avoids the high precision requirementof the process in the traditional micropore preparation technology and reduces the difficulty of preparation of micropores.
Owner:JIESHOU CITY TIANHONG PACKAGING MATERIAL

Method for nitrifying paradichlorobenzene by using solid acid catalyst

The invention relates to a method for nitrifying paradichlorobenzene by using a solid acid catalyst, which comprises the following steps: (1) preparing a 0.3 mol/L zirconium oxychloride solution with a teflon beaker in a fuming cupboard, adding a proper amount of HF, sufficiently stirring until the HF is completely dissolved, and transferring into a constant-pressure dropping funnel for later use; (2) preparing a 1.0 mol/L phenylphosphonic acid solution in the fuming cupboard; (3) slowly and dropwisely adding the zirconium oxychloride solution into the phenylphosphonic acid solution, and keeping the temperature; (4) after keeping the temperature, carrying out vacuum filtration, continuing carrying out water washing and vacuum filtration on the obtained solid until the Cl<-> concentration of the last filtrate is constant, and drying the finally obtained filter residue in a drying oven; (5) taking 1 mol of paradichlorobenzene, heating at 70 DEG C until the paradichlorobenzene is completely molten, and adding 1-3g of solid acid catalyst; and (6) slowly and dropwisely adding 1.1 mol of fuming nitric acid, and reacting. The method has the advantages of less liquid waste discharge and recyclable solid acid, and implements resource regeneration; and the conversion rate of chlorinated aromatics is up to 99% or above.
Owner:JIANGSU LONGCHANG CHEM

Preparation method of cluster MnO2, secondary zinc-manganese battery positive electrode material and secondary zinc-manganese battery

ActiveCN114573033AHigh shock densityHigh specific surface area characteristicsCell electrodesSecondary cellsElectrolytic agentNanowire
The invention discloses a preparation method of cluster MnO2, a secondary zinc-manganese battery positive electrode material and a secondary zinc-manganese battery, the preparation method comprises the following steps: dissolving manganese salt and peroxydisulfate in water, and adding phenyl phosphonic acid or phenyl phosphonate to obtain a mixed solution; carrying out hydrothermal reaction on the mixed solution to obtain turbid liquid containing manganese dioxide precipitate; and carrying out suction filtration, washing and drying on the turbid liquid to obtain the micro-nano cluster spherical manganese dioxide. The cluster MnO2 prepared by the method disclosed by the invention is of a micro-nano cluster structure, specifically, nano wires are organically polymerized into micron-sized cluster particles, and the cluster MnO2 has the characteristic of high specific surface area of a nano material and can be in full contact with electrolyte, so that the reaction sites of active substances are increased, and the conductivity and electrochemical activity of an electrode are improved; the electrode reversibility of the secondary aqueous zinc-manganese battery positive electrode material is effectively enhanced, and the cycling stability is improved; and the capacity retention ratio reaches up to 94.2% after 500 cycles at the current density of 500mA/g.
Owner:NANJING UNIV OF INFORMATION SCI & TECH

Organized calcium based montmorillonite loaded polylactic acid crystal nucleating agent and preparation method thereof

InactiveCN106565991AIncreased effective nucleation sitesHigh nucleation efficiencyMontmorilloniteRoom temperature
The invention provides an organized calcium based montmorillonite loaded polylactic acid crystal nucleating agent and a preparation method thereof. The organized calcium based montmorillonite loaded polylactic acid crystal nucleating agent comprises the following raw materials: organized calcium based montmorillonite and phenylphosphonic acid, wherein the weight ratio of the organized calcium based montmorillonite to the phenylphosphonic acid is (5-100): 1. The preparation method comprises the following steps: uniformly mixing the organized calcium based montmorillonite with the phenylphosphonic acid at room temperature, then carrying out heating to 165 to 185 DEG C until the phenylphosphonic acid is completely molten, carrying out stirring at 165 to 185 DEG C for 1 to 10 minutes, and carrying out cooling to room temperature so as to obtain the organized calcium based montmorillonite loaded polylactic acid crystal nucleating agent, wherein a preferred treatment temperature is 170 to 180 DEG C. The organized calcium based montmorillonite loaded polylactic acid crystal nucleating agent provided by the invention has the following advantages: the organized calcium based montmorillonite is used as a carrier, and calcium phenylphosphate generated by a reaction of the phenylphosphonic acid with the organized calcium based montmorillonite is highly dispersed on the surface of the organized calcium based montmorillonite, so formed effective nucleation points are increased, and nucleation efficiency is improved.
Owner:HUBEI GUANGHE BIO TECH
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