9 results about "Ammonium phosphomolybdate" patented technology

The invention discloses a green process method for extracting alkali metal from composite ore, and relates to the field of metal extraction.The green process method comprises the following steps that S1, aluminosilicate composite ore containing alkali metal and ammonium carbonate are mixed and roasted, and activated clinker is obtained; s2, mixing the activated clinker with an ammonium citrate solution, carrying out a leaching reaction at 80-95 DEG C, and carrying out solid-liquid separation after the reaction to obtain a leaching solution and leaching residues; according to the green process method for extracting the alkali metal from the composite ore, through systematic coupling of a low-temperature ammonium carbonate activation-ammonium citrate complexing leaching-manganese system / ammonium phosphomolybdate specific adsorption-bipolar membrane electrodialysis closed-loop regeneration technology chain, a synergistic interaction effect is formed; the activation step significantly improves the leaching efficiency of the subsequent mild leaching agent.

The invention belongs to the technical field of coatings, and particularly relates to a refractory coating and a preparation method thereof, a refractory coating and a preparation method thereof, and a double-layer composite pipe with a flat inner surface. The fireproof coating comprises a component A, a component B and a component C, the component C is prepared from the following raw materials in parts by weight: 55-100 parts of functional filler and 1-2 parts of coupling agent; wherein the functional filler comprises an ammonium phosphomolybdate coated UIO-66 composite material and further comprises at least one of mica powder, glass flakes, silicon dioxide powder and aluminum oxide powder. According to the fireproof coating provided by the invention, the raw materials comprise the functional filler of the ammonium phosphomolybdate-coated UIO-66 composite material, so that the fireproof performance, the antistatic performance and the impact resistance of the coating can be improved.

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 application discloses an SCM-IC-1 molecular sieve composite material and a preparation method and application thereof. The SCM-IC-1 molecular sieve composite material comprises a silicon-aluminum porous crystal component, an ammonium phosphomolybdate component and a silicon-based binder component. The SCM-IC-1 molecular sieve composite material provided by the application can be used as an adsorption material for capturing and detecting metal ions in water bodies, especially for cesium ions, and has the technical effects of high capture rate and fast capture rate.

The invention provides a micron-sized spherical inorganic composite material, a preparation method and application thereof, and an adsorption method of Cs < + > in a solution, and belongs to the technical field of radioactive waste treatment in nuclear fuel circulation. The method comprises the following steps: mixing water, absolute ethyl alcohol, hydrochloric acid, a silicon source and ammonium phosphomolybdate, and concentrating to obtain a silicic acid solution; mixing benzyl alcohol, a methyl cellulose aqueous solution and a benzyl alcohol solution of an emulsifier to obtain a dispersion system; and adding the silicic acid solution into the dispersion system, and then heating to obtain the micron-sized spherical inorganic composite material. In the invention, absolute ethyl alcohol is used as a solvent to improve the solubility of a silicon source, hydrochloric acid is used as a catalyst to catalyze hydrolysis reaction of the silicon source, benzyl alcohol provides a hydrophobic environment, a methylcellulose aqueous solution provides a spherical template to induce formation of a spherical structure, and an emulsifier reduces surface tension to make a system form a stable emulsion. The micron-sized spherical inorganic composite material with high adsorption capacity, high selectivity and good stability is prepared.

The application discloses a tree planting method in a drought area, and provides a biological carbon composite material, wherein calcium peroxide in the biological carbon composite material slowly reacts with water to release oxygen, the oxygen is released in a sustained manner to promote the respiration of the root system of seedlings, and then the growth of the seedlings is promoted; the biological carbon / ammonium phosphomolybdate composite and the starch coated calcium peroxide are adopted instead of directly adding calcium peroxide, because calcium peroxide slowly reacts with water to generate calcium hydroxide, the calcium hydroxide is alkaline, the root system of the seedlings likes an acidic environment, the generated calcium hydroxide is not conducive to the growth of the seedlings, and the release of hydroxyl ions can be reduced by adopting the biological carbon coating treatment; meanwhile, the ammonium phosphomolybdate is loaded on the surface and the pore structure of the biological carbon, the calcium hydroxide generated by the slow reaction of calcium peroxide with water in the application is beneficial to promoting the dissolution of the ammonium phosphomolybdate, and then the ammonium phosphomolybdate is absorbed by the seedlings, the phosphorus and molybdenum elements required by the seedlings are supplemented, and the growth of the seedlings is promoted.

The application discloses an SCM-IC-2 molecular sieve composite material and a preparation method and application thereof. The SCM-IC-2 molecular sieve composite material comprises an acid molecular sieve, ammonium phosphomolybdate and an alumina binder. The preparation method of the material comprises the following steps: (1) heating and activating the acid molecular sieve to obtain a solid precursor; (2) mixing the solid precursor, ammonium phosphomolybdate, alumina binder and water to obtain a mixture; and (3) forming the mixture by spraying to obtain the SCM-IC-2 molecular sieve composite material. The SCM-IC-2 molecular sieve composite material provided by the application can be used as an adsorption material for capturing and detecting metal ions in water, especially cesium ions, and has the technical effects of high capture rate, fast capture speed and no need of additional adjustment of the acidity of a water sample.

This invention belongs to the field of chemical impurity removal technology and discloses a method for preparing high-purity molybdenum trioxide. The method involves mixing molybdenum trioxide powder with NaOH solution to obtain a first mixed solution; adding phosphoric acid to the first mixed solution and adjusting the pH to 1-2 to obtain an acidic solution; and adding ammonium salt to the acidic solution to react phosphomolybdic acid with NH4+. + The reaction produces ammonium phosphomolybdate precipitate, phosphotungstic acid, and NH4. + The reaction produces an ammonium phosphotungstenate solution, yielding a reaction solution. The reaction solution is filtered to obtain an ammonium phosphomolybdate precipitate. The ammonium phosphomolybdate precipitate is suspended, and ammonia is added to the suspension to mix and adjust the pH to 9-10, resulting in a second mixed solution. Molybdenum and phosphorus in the second mixed solution are separated by extraction to obtain a pure ammonium molybdate solution. The pure ammonium molybdate solution is then subjected to crystallization and oxidative roasting to obtain high-purity molybdenum trioxide. This invention enables the effective separation of trace amounts of tungsten from molybdenum trioxide with high separation efficiency, thereby obtaining high-purity molybdenum trioxide.

The application discloses a polychromatic visual kit for detecting acid phosphatase and construction and application thereof, and belongs to the technical field of biological detection and clinical diagnosis. The kit is based on a double-effect strategy of "substrate anchoring-microenvironment adaptation" of PtFe NPs, triggers a cascade reaction through ACP hydrolysis of pyrophosphate (PPi), and realizes color development through coupling of TMB oxidation and ammonium phosphomolybdate complexation, so that a composite color signal with double enhanced hue and color difference is formed. The kit can realize naked-eye accurate differentiation of ACP in a concentration range of 0-30 U / L, a linear equation can be established in a range of 0.5-20 U / L of the hue change, and quantitative detection can be carried out. The kit is simple to operate and has strong anti-interference capability, and solves the technical problems of weak signal and insufficient recognition degree of a traditional single color development method in a low concentration range.