32results about How to "In situ generation" patented technology

The invention relates to a low-temperature high-pressure control device for observing aquo-complex generation and decomposition characteristics through an X-ray CT device, and belongs to the field of oil and gas production scientific research apparatuses. A reaction still has design pressure of 0-10 MPa and design temperature of 268-288 K, and the temperature and pressure conditions of aquo-complex generation and stable existence are met. The temperature of the reaction still is controlled through the upper end and the lower end of a semiconductor refrigerating element, noise does not exist, the acting speed is high, reliability is high, and operation is convenient. The reaction still is composed of an inner pipe and an outer pipe, wherein the inner pipe is made from titanium alloy and is mainly used for heat conduction, and the outer pipe is made from polyimide belonging to a low-heat-conductivity material and is mainly used for heat preservation and pressure preservation; according to the characteristics, the heat conduction and the heat preservation and pressure preservation are controlled independently and can be more easily controlled in the terms of engineering. The low-temperature high-pressure control device can be put on a carrying table of the CT device and generate aquo-complex in situ; through the three-dimensional imaging of the CT device, the generation and decomposition characteristics of aquo-complex can be visually studied.

The invention provides a method for preparing cuprous oxide antibacterial textiles. The method first uses low-temperature plasma to pretreat cellulose fiber fabrics, introduces amino groups on the surface of the fabrics, and simultaneously etches the surface of the cellulose fiber fabrics; Covering silk peptide solution; then padding copper acetate solution, using copper ions and ‑COOH and ‑NH on silk peptide molecules 2 Coordination effect reduces the water solubility of silk peptide, improves the binding fastness of silk peptide, copper ions and textiles; and then forms cuprous oxide in situ on textiles to obtain antibacterial textiles. The obtained fabric not only has good antibacterial property, but also is washable.

The invention discloses a method for preparing a graphene-loaded platinum nano catalyst, which comprises the following steps of: (1) preparing graphene (GNS); (2) preparing polydiallyl dimethyl ammonium chloride (PDDA) functional graphene; and (3) preparing the graphene-loaded platinum nano (Pt / GNS) catalyst. The method has the advantages of uniformly adsorbing and distributing PtCl6<2-> with negative charge on the surface of the GNS through electrostatic adhesion by using positive charge uniformly distributed on the surface of the PDDA-modified GNS, solving the technical problem that metallic particles per se aggregate, realizing higher loading rate of PtNPs and having uniform grain size and controllable size.

The invention provides a method for preparing indigo-dyed antibacterial textiles. In the method, the natural indigo is ultra-fine by means of ultrasonic crushing, and then the textile is pad-rolled with an ultra-fine natural indigo dye suspension solution, and the copper salt solution is rolled, and then A one-step hydrothermal method is used to realize the dyeing of indigo dye and the in-situ generation of cuprous oxide on the fabric. The polyvinylpyrrolidone in the suspension solution is not only a dispersant for natural indigo dye, but also can be mixed with Cu when padding the copper salt solution. 2+ Form complexation; in the process of hydrothermal reaction, glucose is not only the reducing agent of natural indigo, but also the Cu 2+ converted to Cu + the reducing agent. The fabric obtained by the method not only has deep color and good color fastness, but also has high antibacterial activity and good washability.