31 results about "Magnesium Acetate Tetrahydrate" patented technology

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.