5results about How to "The post-processing process is simple" patented technology

The invention discloses activated carbon with biochemical sludge doped with organic matter and a preparation method thereof.The preparation method comprises the following steps that the biochemical sludge is subjected to dehydration pretreatment and fully mixed with the organic matter, then drying and smashing are conducted, and standby sludge particles are obtained; carbonizing the standby sludge particles at constant temperature, and grinding to obtain carbonized material powder; mixing the carbonized material powder with an activating agent, adding the mixture into deionized water, carrying out water-bath heating reaction, and filtering and drying a product; performing constant-temperature activation under the protection of inert gas to obtain an activated product; and placing the activated product in concentrated acid for ultrasonic treatment, and then washing, drying and crushing to obtain the product. According to the method, the biochemical sludge is prepared into the activated carbon, waste is turned into wealth, resource utilization of the biochemical sludge is achieved, the treatment cost of the biochemical sludge is saved, environmental benefits and economic benefits are achieved, and the obtained activated carbon is stable in structure, developed in pores, large in specific surface area and high in adsorbability.

The application discloses a sodium ion battery positive electrode material and a preparation method thereof. By adding cheap, non-toxic, environment-friendly and easily-degradable water-soluble cellulose as an additive, the growth of a specific crystal direction can be inhibited. The hydrophilic group of the water-soluble cellulose can change the coordination environment of metal ions and reduce the entry of water molecules into the crystal lattice. In addition, by introducing the water-soluble cellulose, high-concentration reactant feeding can be realized, which is beneficial to reducing the consumption of industrial water. Meanwhile, compared with other existing additives, the water-soluble cellulose is environment-friendly, easily-degradable, low in production and separation cost, and free of toxic by-product generation. The prepared open three-face cubic Fe-based Prussian blue analogue material is good in dispersity, high in purity and uniform in morphology, and as a sodium ion battery positive electrode material, has a reversible capacity of 155.40 mAhg ‑1 at 0.1C (1C=170 mAhg ‑1 ) and a first discharge coulombic efficiency of 97.83%.

The application discloses a method for synthesizing isooctanol benzoate by using a composite catalyst, and comprises the following steps: mixing isooctanol, the composite catalyst and benzoic acid, and heating and stirring, then increasing the temperature to 140-210 DEG C, carrying out esterification reaction for 5-7 hours, after the esterification reaction is completed, carrying out decoloration, neutralization, water washing, dehydration and dealcoholization, filtering, and cooling to obtain isooctanol benzoate. The application has the beneficial effects that by using the composite catalyst, the color number of the product can be reduced, the reaction speed can be accelerated, the isooctanol utilization rate can be improved, and the esterification reaction efficiency is improved; the process is simple, the production cycle is short, the product yield is high, the color number is small, energy is saved, the environment is protected, and industrialization is easy to realize.

This invention belongs to the field of polyolefin recycling technology and relates to a method for preparing high-quality carbon nanotubes by catalytic carbonization of polyolefins. In this invention, polyolefins are degraded at high temperature to generate small-molecule hydrocarbons. Subsequently, a Ni-Mo-Al catalyst undergoes a reduction reaction to generate elemental nickel. The elemental nickel catalyzes the degradation products to undergo dehydrogenation, cyclization, and aromatization reactions, followed by carbon deposition on the surface of the elemental nickel, which gradually grows into carbon nanotubes. Furthermore, the Ni-Mo-Al catalyst can reduce the formation of amorphous carbon, thereby increasing the activity of elemental nickel and reducing its ability to dissolve carbon, thus preparing carbon nanotubes with smaller diameters and uniform morphology. This invention has the advantages of inexpensive and readily available carbon sources and a simple preparation method, realizing the upgraded chemical recycling of waste polyolefins and the controllable preparation of carbon nanotubes, effectively solving the problem of reusing urban and industrial waste polyolefins.

This invention discloses a method for synthesizing fluopyram. The method involves reacting diethyl 2-(3-chloro-5-(trifluoromethyl)pyridin-2-yl)malonate with dihalomethane in the presence of a polar aprotic solvent and an inorganic base to obtain diethyl 2-halomethyl-2-(3-chloro-5-(trifluoromethyl)pyridin-2-yl)malonate, followed by condensation with 2-trifluoromethylbenzamide to obtain diethyl 2-(3-chloro-5-(trifluoromethyl)pyridin-2-yl)-2-((2-(trifluoromethane)benzoylamino)methyl)malonate. After adjusting the pH of the reaction system to 4-5, the temperature is increased to induce a decarboxylation reaction, yielding fluopyram. This invention employs a simple one-pot process, which is convenient to operate, has a high yield, and low cost, making it suitable for industrial production.