33results about How to "Realize scale-up production" patented technology

The invention discloses a method for preparing a two-dimensional MOFs material, which includes the following steps: organic molecules and a metal organic framework material are mixed under normal temperature, the mixture is then milled or ball-milled, and after washing, centrifuging and drying, the two-dimensional metal organic framework material is obtained. the reaction conditions for the preparation of the two-dimensional MOFs are mild, reaction is fast, yield is high, solvent does not need to be added, moreover, the reaction process is simple, needed equipment is simple, and a ball mill can be used for implementing large-scale production.

The invention discloses a graphene coated lead composite material and a preparation method thereof as well as a lead-acid battery. The graphene coated lead composite material comprises lead particles and a graphene layer covering the lead particles; the graphene layer is further doped with carbonate and stannous sulfate, and the mass ratio of carbonate to stannous sulfate to graphene in the graphene layer is (1-4):(0.01-0.06):1. The preparation method of the graphene coated lead composite material comprises the steps of preparing a precursor mixture of the graphene coated lead composite material and performing solvothermal reaction treatment on the mixture. The anode and the cathode of the lead-acid battery contain the graphene coated lead composite material. The graphene coated lead composite material is high in structural stability, electrical conductivity and capacitive performance; the preparation method of the graphene coated lead composite material is capable of guaranteeing even size distribution, and also is high in operability and environmentally friendly, and consequently, enlarged production can be realized. The lead-acid battery is excellent in specific capacity, charge-discharge performance and charge-discharge cycle performance, and long in service life.

The invention discloses a device and method for preparing amorphous carbon and nitrogen thin films on the surface of silicon. The device is a pulse cathode electric arc device assisted by an ion source. The preparation device includes the following steps that a silicon substrate which is chemically cleaned in advance is dried and placed on a rotating sample table; vacuumization is performed, argon gas is led into a vacuum chamber, and the surface of the silicon substrate is physically cleaned through an ion sputtering source; and high-purity graphite serves as a cathode target material of a pulse electric arc, the pulse discharging frequency is adjusted, nitrogen gas is led at the same time, the ion source is opened, and the atomization and ionization nitrogen-doped amorphous carbon and nitrogen thin films are prepared. By means of the device and method, the content of carbon / nitrogen atoms and carbon-nitrogen bonds / carbon-carbon bonds in the amorphous carbon and nitrogen thin films is adjustable, and the carbon and nitrogen bonding types and the graphite-like nitrogen / pyridine-like nitrogen structures are controllable.

The invention discloses a method for preparing a vecuronium bromide intermediate by employing a microchannel modularization reaction device. The method comprises the following steps: respectively pumping water and a piperidine solution of 2alpha,3alpha-epoxy-16alpha-bromine-17-ketone-5-alpha-androstane into the microchannel modularization reaction device; controlling the reaction temperature to be 100-150 DEG C and the reaction residence time to be 30-45 minutes in a micro-reactor of the microchannel modularization reaction device; after reacting, distilling reaction liquid at reduced pressure, and removing water and piperidine; dissolving the residual liquid with a dilute hydrochloric acid solution, and adjusting the pH value to be 2-3; adding dichloromethane to wash impurities, skimming, and taking an upper water phase; adjusting the pH value of the water phase to be 9-10 with a NaOH water solution, and extracting with dichloromethane; and drying the extracted organic phase with anhydrous sodium sulfate, and carrying out vacuum concentration, so as to obtain the vecuronium bromide intermediate 2beta,16beta-dipiperidino-3alpha-hydroxy-17-ketone-5alpha-androstane.

The present invention provides a kind of synthetic method of 1H-3-pyrrolidone compound, take aliphatic primary amine and β-diketone compound as raw material, in organic solvent, mix evenly with iron complex catalyst and copper salt cocatalyst, in React at 40-110°C for 8-12 hours. After the reaction, separate and purify to obtain 1H-3-pyrrolidone compounds. The product synthesized by the method has a purity of over 99% (as determined by HPLC) after purification, and a yield of up to 85%. The production process is simple, the production process is mild and the emission is low, so the process design can be directly carried out on the basis of laboratory work, and the scale-up production can be realized.

A light- and pH-responsive amphiphilic alginate and its stable pickering emulsion, the emulsion includes oil-water two-phase, and its stabilizer is nano-silica, main molecule alginate (Alg-β-CD) and the guest molecule Azo‑PEG, the volume ratio of the oil phase to the water phase is 1:0.1‑10, the concentration of silicon dioxide dispersed in the water phase is 2wt%; Alg‑β‑CD dispersed in the water phase The concentration of Azo‑PEG is 1g / L; the concentration of Azo‑PEG dispersed in the aqueous phase is 2g / L. The Pickering emulsion provided by the invention has strong stability, pH responsiveness and photoresponsiveness, and the controllable release of internal phase drugs can be realized by adjusting the pH or light. At the same time, the preparation method is simple in operation and has a large preparation flux. It is easier to realize the enlarged production of the emulsion, and has a wide range of applications and good promotion and application value in the fields of cosmetics, biology, pesticide drug delivery and the like.

The invention discloses magnetic core-shell microspheres, and a preparation method and use thereof. The core-shell microspheres are prepared from the following materials in a certain ratio: nano Fe3O4, copper nitrate, trimesic acid and graphene oxide. The method comprises the steps of: (a) weighing the nano Fe3O4, the copper nitrate, the trimesic acid and the graphene oxide according to the ratio; pouring into a reaction kettle after ultrasonic oscillation, reacting at certain temperature and pressure; (b) heating and cooling by program; (c) separating sediments by an external magnet; preparing gray and black magnetic core-shell microspheres; respectively washing by distilled water and anhydrous ethanol and storing for later use; and (d) separating the anhydrous ethanol by the external magnet, and drying for use. The magnetic core-shell microspheres are strong in adsorption performance, can be efficiently used in cycle, can rapidly achieve balance within a short period of time, and are suitable for rapid treatment of dye wastewater. The adsorbent is good in stability, and can be used in cycle for a plurality of times after being analyzed by an analytical agent; the adsorption rate after the adsorbent is used in cycle for five times can be up to 96-99%.