5results about How to "Realize large-scale preparation" patented technology

The present invention relates to an organic phosphorescent material and a preparation method and application thereof, belonging to the technical field of functional polymer materials. The preparation method of the organic phosphorescent material of the present invention comprises the following steps: mixing a polyhydroxy polymer material, an aromatic phosphorescent molecule containing a boric acid group and an alkaline catalyst to obtain a mixture A; adding the obtained mixture A to a banbury mixer for banburying, the banburying temperature is 20-500°C, the rotation speed is 10-100rpm, the maximum torque is 10-80dNm, an esterification reaction occurs, and the reaction time is 0.1-24h, and the organic phosphorescent material is obtained. The preparation method of the present invention does not require the use of an organic solvent, is simple to operate, green and environmentally friendly, has high efficiency, and the synthesis process is easy to control, and can achieve large-scale preparation. The prepared organic phosphorescent material has the advantage of a long phosphorescence life, and can be applied to optical encryption, anti-counterfeiting technology, biological imaging, optoelectronic devices, and smart sensors.

The application discloses biomass aerogel and a preparation method and application thereof, and adopts kitchen garbage as raw material, and after gelatinization, aging forming, freeze drying and heat treatment, biomass aerogel is obtained, the preparation method is simple in operation, low in cost, green and environment-friendly, and can realize resource utilization of biomass waste; the obtained biomass aerogel is porous and light, has good lipophilicity and hydrophobicity, stability and reusability, and can realize large-scale preparation, and is applied to treatment of marine pollution, river pollution and the like.

The invention belongs to the technical field of environment-friendly functional materials, and discloses a method for preparing amino-functionalized hollow silicon spheres based on a steam condensation method and application of the amino-functionalized hollow silicon spheres to lead ion adsorption. A nano-droplet reactor is prepared by utilizing the principle that water vapor in air can be condensed on the surface of a cold oil phase in a high-humidity environment, and an alkaline silane coupling agent is used for creating an alkaline microenvironment and catalyzing a hydrolytic condensation reaction of the silane coupling agent to prepare amino-functionalized silicon dioxide; the amino-functionalized hollow silicon dioxide adsorbent (SN3-2) is prepared by regulating and controlling the use amount of a surfactant Span 80, the condensation time and the use amount ratio of a silane coupling agent, the problem that the preparation process of hollow functionalized silicon spheres is complex is solved, and the amino-functionalized hollow silicon dioxide adsorbent can reach adsorption equilibrium within 80 min in Pb < 2 + > removal application, and the saturated adsorption capacity is 567 mg / g.

The application belongs to the technical field of bio-chemical industry, and particularly relates to a P450 fusion protein, and a structure of the fusion protein is VdhM3-Linker1-AciC-Linker2-AciB, wherein VdhM3 is Vdh-M3 (I114R / N173M / Q310R); the GenBank accession numbers of the encoding genes of AciC and AciB are both AB221118.1; the amino acid sequence of Linker2 is GSGSGH; and Linker1 is a flexible linker, a rigid linker or a flexible-rigid combined linker. Through systematic screening, it is determined that the AciC / AciB oxidation-reduction partner system derived from Acinetobacter has the best adaptability with the VdhM3 P450 enzyme, the catalytic activity is high, and the selectivity of the target product calcifediol is as high as 95%, the generation of by-products is reduced, and the purification efficiency and yield of the product are improved.

The application relates to the field of oil and gas field fracturing technology, and particularly discloses an ultra-low-density micro-nano proppant for unconventional reservoir fracturing and a preparation method thereof. The proppant is prepared from a mixture containing 30-60 wt% of a vinyl monomer, 10-25 wt% of an acrylic ester monomer and 25-50 wt% of an unsaturated resin, emulsified into micro-nano scale droplets through a compounded emulsifier system, and then solidified. The preparation method comprises the following steps: mixing the resin composition with the emulsifier to form a uniform oil phase, dispersing the oil phase into an aqueous phase under high-speed shearing to form a micro-nano emulsion; and then realizing complete solidification of the droplets under mild conditions through an oxidation-reduction solidification system. The proppant has ultra-low density and micro-nano scale particle size, can effectively enter and support a super-remote complex micro-nano scale fracture network in an unconventional reservoir, and greatly improves the oil and gas recovery rate. The proppant has a complete structure under a 60MPa closed pressure, and can significantly improve the fracture conductivity.