6results about How to "Raw green" patented technology

The invention discloses an organic carbonyl compound electrode material, a preparation method and application of the organic carbonyl compound electrode material in a lithium ion battery, and the organic carbonyl compound electrode material is bipyridino [3 ', 2': 5, 6; the invention relates to an organic carbonyl compound electrode material, which is prepared from 2, 2 ', 3': 7, 8] quinoxaline [2, 3-i] bipyridino [3, 2-a: 2 ', 3'-c] phenazine-10, 21-diquinone and 1, 2, 4, 5-tetraamino p-benzoquinone and 1, 10-phenanthroline-5, 6-diketone through a dehydration condensation reaction. When the organic electrode material is used as a positive electrode material to be applied to a lithium ion battery, due to the fact that the organic electrode material contains a large conjugated system, the organic electrode material has good dissolution inertness in electrolyte and is beneficial to electron transmission, and therefore the cycling stability and the rate performance of the battery are improved. In addition, multiple active sites provide more redox active sites to coordinate with lithium ions, so that reversible lithium storage is realized, and relatively high capacity is shown.

The application belongs to the technical field of bio-based packaging materials, and particularly relates to a novel double-layer composite film and application thereof. The novel double-layer composite film comprises the following steps: reacting palmitic anhydride and carboxymethyl cellulose to obtain carboxymethyl cellulose palmitate; adding a pH-sensitive natural dye indicator to obtain carboxymethyl cellulose palmitate nanoemulsion containing a pH-sensitive substance; then loading a natural polymer material to prepare a film material; finally adding the film material to the carboxymethyl cellulose palmitate to prepare a composite film, thereby obtaining the novel double-layer composite film. The double-layer composite film can be self-emulsified without adding a surfactant, and has the ability to load functional indicator (pH-sensitive color indicator) substances; meanwhile, the barrier performance of the film material, such as a chitosan film, to water vapor and oxygen is improved, and the double-layer composite film has a very promising application in food or fruit preservation. The method provided by the application is not only green in raw materials, but also uses a flow casting method, which can be applied to industrial production and has a good application prospect.

The invention discloses a method for preparing 2,3-benzofuran by a one-pot method using furoic acid catalyzed by a halogen acid. The steps of the method are as follows: 1) adding a solvent and a halogen acid to a high-temperature and high-pressure reactor with stirring and lined with polytetrafluoroethylene, starting stirring, and then adding furoic acid; 2) heating to a reaction temperature of 100 to 150° C., and reacting in a one-pot method for 2 to 24 hours; 3) cooling to room temperature after the reaction to obtain a reaction product, and then separating to obtain a 2,3-benzofuran product. The present invention adopts a one-pot method to prepare 2,3-benzofuran from furoic acid, has a short process route, mild conditions, and a 2,3-benzofuran yield of up to 75.0%, and has a very broad prospect for industrial application.

The invention belongs to the field of carbon dioxide conversion and organic catalysis, and particularly relates to a composite catalyst for polycondensation of carbon dioxide and aliphatic dihydric alcohol and a method for preparing low polycarbonate by using the composite catalyst. According to the preparation method disclosed by the invention, a binary composite catalytic system of organic alkali and carbodiimide condensing agent is adopted, so that carbon dioxide and aliphatic dihydric alcohol are subjected to dehydration polycondensation under relatively mild conditions to prepare low-polycarbonate, and the low-polycarbonate can be connected in series with other processes to prepare a carbon dioxide-based polymer with higher molecular weight. The method does not need to use an epoxy raw material monomer, and has the advantages of simple process, low cost, controllable molecular weight of the product, designable structure, high expected added value and excellent industrial prospect.

The application belongs to the technical field of nanomaterials and lubrication, and discloses a hydrophobic modified graphene quantum dot, a preparation method thereof and application of the graphene quantum dot in lubricating oil, and the preparation method comprises the following steps: (1) using citric acid as a carbon source, hydrophilic GQDs are prepared by a pyrolysis method; (2) using o-xylene as a solvent and lauric acid as a modification reagent, the hydrophilic GQDs are subjected to hydrophobic modification, and then the hydrophobic modified graphene quantum dot is obtained by low-temperature precipitation, centrifugation and purification, and can be applied in lubricating oil. The application solves the problems that traditional GQDs are prone to agglomeration, have poor dispersibility and limited lubricating effect in non-polar lubricating oil, and the prepared hydrophobic graphene quantum dot has excellent friction-reducing and wear-resisting synergistic effect, can form a continuous and uniform protective layer rich in carbon and oxygen at a friction interface, can simultaneously reduce a friction coefficient and a wear volume, the lowest friction coefficient is 0.063, the wear volume is reduced by 90.84%, and the comprehensive lubricating performance is outstanding.

The invention belongs to the field of preparation processes of nano-porous materials, and relates to a preparation method of a spectrum-adjustable flexible cellulose-based aerogel material. The preparation method comprises the following steps: dissolving cellulose in an ionic liquid to obtain a sol solution, sequentially introducing an organic silicon source modifier, an infrared screening agent and an ultraviolet absorbent into the sol solution, and carrying out a molding process, aging and drying to obtain the spectrum-adjustable flexible cellulose-based aerogel material. The method has the advantages of green and low-cost materials and convenient process, and is low in energy consumption, simple in process and easy to realize large-scale production.