31 results about "Magnesium Acetate Tetrahydrate" patented technology

The invention discloses a crystal material. The chemical formula is Mg11(HPO3)8(OH)6, the reflectivity in an ultraviolet-visible-near infrared band of 0.2-2.5 microns is 88% or above, and simultaneously the emissivity in a far infrared band of 2.5-25 microns is 0.90 or above. The invention also discloses a preparation method of the crystal material. The preparation method comprises the following steps: on the basis of raw materials of magnesium acetate tetrahydrate and phosphorous acid, simultaneously adding a cyclohexylamine template agent, and preparing the Mg11(HPO3)8(OH)6 crystal powder bya hydrothermal synthesis method. According to the crystal material provided by the invention, comprehensive performance of reflection and radiation can be well combined, the actual cooling effect is2-10 DEG C better than the common heat reflecting material titanium dioxide in the market, and the crystal material can be well applied to the field of heat reflection infrared radiation.

The invention discloses a glucose hydrogenolysis catalysis Cu / MgO catalyst and a preparation method thereof, and belongs to the technical field of heterogeneous catalysis. In anhydrous anaerobic conditions, by filtering, vacuum distillation and sublimation and purification of a liquid obtained by reaction of cuprous oxide, 1, 5-cyclooctadiene, and hexafluoro-acetylacetone, metal organic precursor hexafluoro-acetylacetone-cyclooctadiene copper and hexafluoro-acetylacetone copper relatively stable to air is produced. Petal shaped Mg (OH) 2 is synthesized by solvothermal method from magnesium acetate tetrahydrate as a raw material by use of a mixture of ethanol and deionized water solution as solvent, and the petal shaped Mg (OH) 2 is calcined to obtain an alkaline mesoporous MgO carrier with high specific surface area. By MOCVD (metal organic chemical vapor deposition) method, the two metal organic precursors are supported onto the MgO carrier for hydrogen reduction to obtain the copper base catalyst Cu / MgO used for glucose hydrogenolysis reaction. The glucose hydrogenolysis catalysis Cu / MgO catalyst has the advantages of simple operation process, mild reaction condition, good catalyst activity and stability, and good prospects of industrial application.

A pollution-free manufacturing method for surface electric heating elements is characterized in that a formula of a surface modification solution comprises, by weight, 100g of stannous fluoroboric acid, 1-1.2g of antimony trifluoride, 0.2-0.4g of cupric acetate monohydrate, 0.2-0.4g of magnesium acetate tetrahydrate, a proper amount of hydrofluoric acid and a proper amount of acetic acid, and 100-500ml of distilled water. The pollution-free manufacturing method for the surface electric heating elements comprises the steps of (1) preparing the surface modification solution, wherein the distilled water is acidized through the acetic acid, the stannous fluoroboric acid, the cupric acetate monohydrate and the magnesium acetate tetrahydrate are weighed, stirred and melted in the acidized distilled water respectively, antimony trifluoride is quickly weighed, stirred and added in the acidized distilled water, the mixture is stirred, and all the solutions are mixed evenly, sealed and stored at a shady, cool and ventilating place for use; (2) cleaning base materials; (3) feeding the base materials into a surface modification furnace which is 550-650 DEG C to carry out surface modification on the base materials; (4) brushing silver paste at proper positions of radiant faces, and carrying out mechanical wire leading; (5) powering on to carry out aging by using voltages 1.25 times using voltages. The pollution-free manufacturing method for the surface electric heating elements is suitable for manufacturing the pollution-free surface electric heating elements.

The invention provides a stable uric acid detection kit. The stable uric acid detection kit is composed of a reagent R1 and a reagent R2, wherein the reagent R1 contains buffer solution, ethylenediamine tetraacetic acid disodium salt, magnesium acetate tetrahydrate, saccharose, an anti-interference agent, chromogen, a stabilizing agent and a preservative; the reagent R2 contains buffer solution, ethylenediamine tetraacetic acid disodium salt, 4-amino-antipyrine, peroxidase, uricase, a stabilizing agent and a preservative. The stable uric acid detection kit is used for measuring the content of blood uric acid by a colorimetric method that uricase is utilized to reduce uric acid; the method has strong specificity, has sensitivity higher than that of the chemical method, can be used for a full-automatic biochemical analyzer and can be applied clinically; and the anti-interference agent is added in the kit, the interference of ascorbic acid in the serum can be effectively removed, and the result is accurate.

The invention discloses a synthesis method of controllable-length / width basic magnesium carbonate nanorods. The synthesis method comprises the following steps: dissolving magnesium acetate tetrahydrate and ammonium carbonate in a deionized water-anhydrous ethanol mixed solution, adding cetyl trimethyl ammonium chloride and sodium hydroxide into the solution, stirring uniformly, transferring the mixed solution into a reaction kettle, and heating to the required temperature to react for the required time; and collecting the product by centrifugal separation, and washing the product with distilled water and industrial alcohol several times. The simple one-step hydrothermal method is utilized to synthesize the one-dimensional basic magnesium carbonate nanorods with uniform size. The reactant ratio is regulated to implement control on slender-rod basic magnesium carbonate to stubby-rod basic magnesium carbonate.