5 results about "Hydrothermal synthesis" patented technology

The invention relates to the technical field of photocatalytic materials, and relates to a preparation method and an application of bimetallic photocatalytic functional POM/MOFs. Bimetallic photocatalytic functional POM/MOF target materials with a porous structure are prepared through a hydrothermal synthesis technology or a layered diffusion technology with polyoxometalate POM as a functional group, L as a connection ligand and Cu<2+>, Co<2+> or Fe<2+> in a transition metal salt Tm as nodes, and the target materials POM/MOFs are applied in a functional photocatalytic carbon- carbon coupling reaction. The preparation method has the advantages of simple synthetic steps, easy operation, low energy consumption and high yield, and the obtained functional materials have the advantages of stable chemical properties, and easy large-area popularization and application. The MOF photocatalytic materials have a large specific surface area, have a very good conversion rate and reusability under the irritation of a 18W energy saving lamp when the use amount is 6/1000 of the amount of a substrate, and are suitable for the needs of large-scale industrial production.

This invention relates to the synthesis of large pore composite molecular sieves and to the synthetic large pore composite molecular sieves so produced. The molecular sieves of the invention have the same general utilities of the comparable molecular sieves of the prior art but have been found to be superior catalysts and absorbents. This invention relates to a hydrothermal synthesis of large pore molecular sieves from nutrients, at least one of which contains an amorphous framework-structure, and which framework-structure is essentially retained in the synthetic molecular sieve. This invention stems from a discovery that the intrinsic porosity characteristics of a nutrient that possesses an amorphous cation oxide-framework can be substantially retained in the final molecular sieve containing product formed by a hydrothermal process by carefully controlling the conditions under which the hydrothermal process is conducted. For example, the invention contemplates retention of the particle size in a final molecular sieve-containing product that corresponds with that of an amorphous cation oxide-framework nutrient used in its manufacture. This invention drives the selection of process conditions to achieve one or more of macro and meso porosity ("large pore composite porosity") in the final molecular sieve product as a direct product of the hydrothermal reaction producing the molecular sieve. The invention allows the production of a molecular sieve that is in situ incorporated in the framework morphology of a solid cation oxide-framework used in the molecular sieve's manufacture.

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 preparation method of a beer bottle sterilizing detergent based on a microcrystalline cellulose/silver composite material. A nanocrystalline cellulose suspension prepared byan enzymatic method is mixed with silver nitrate and then a hydrothermal synthesis reaction is carried out to obtain a nano-silver loaded nano microcrystalline cellulose suspension, a biological surfactant, alkali and other raw materials are added and uniform mixing is carried out to obtain the beer bottle sterilizing detergent. The beer bottle sterilizing detergent prepared by the preparation method not only has the advantages of strong detergency, good anti-dirt redeposition ability, easiness for rinsing and removing dirt, and good cleaning effect on beer bottles, and can reduce scaling of equipment and is favorable for smooth running of a whole system, but also synchronously achieves sterilization and disinfection of the beer bottles with good bactericidal effect, and effectively improves the hygiene performance of the cleaned beer bottles.