40results about How to "Guaranteed catalytic efficiency" patented technology

The invention relates to a boroxol monotitanocene catalyst with high polymerization activity to alpha-olefin and high solubility in water, a relative preparation method and an application. The preparation method comprises synthesizing borate titanium trichloride from borate and titanium tetrachloride at the mol ratio of 1.00-1.05, reacting trimethylsilyl compound of cyclopentadienyl, lindenyl or relative derivative with borate titanium trichloride at the mol ratio of 1.05-1.10 to obtain borate titanium trichloride, reacting phenol or alcohol, pyrindine and borate dichloro monotitanocene at themol ratio of 1:1:1.05-1:1:1.1 to obtain boroxol monotitanocene catalyst. The invention uses borate group to lead into oxygen atoms, thereby stabilizing molecule structure and improving the solubilityand stability of the product in hexane with confirmed catalysis efficiency. The product is suitable for the homogeneous or slurry polymerization whose solvent is hexane. The synthesis method is simple. And the product can be used to synthesize the homopolymer or copolymer from ethylene or / and alpha olefin.

The invention relates to a low-smoke, halogen-free, high-temperature-resistant flame-retardant vinyl ester resin and a preparation method thereof, belonging to the technical field of flame-retardant vinyl ester resins. It is prepared from epoxy resin, unsaturated monobasic acid, reactive flame retardant, additive flame retardant, catalyst, polymerization inhibitor and crosslinkable monomer through a series of reactions. The invention is composed of raw materials with low price, low preparation cost, combined with the comprehensive effect of two kinds of flame retardants, reactive type and additive type, and the flame retardant effect is better than similar products on the market; the flame retardant resin is low-smoke and halogen-free, and can replace existing Brominated flame retardant chemically modified vinyl resin with halogen environmental protection issues; moderate viscosity, good construction performance, good anti-settling performance, outstanding corrosion resistance and high temperature resistance, can be used for building materials, automotive parts, etc., especially for FRP products that require low-smoke, halogen-free and flame-retardant requirements such as hand lay-up railway passenger car parts.

The invention discloses a kind of O 3 / Photocatalytic advanced oxidation reaction system and method for high concentration wastewater. The wastewater treatment system includes a pretreatment module (8), an ozone generator (9) and a reaction device (1), the reaction device includes a housing (2), an ultraviolet light generator (3) and a photocatalyst transmission assembly, The photocatalyst transmission assembly includes a main body part (4) and a plurality of branch parts (5) for dispersing photocatalysts; the advanced oxidation wastewater treatment method includes three steps: wastewater pretreatment, advanced oxidation, and reflux treatment. Beneficial effects of the present invention: the present invention adopts two advanced oxidation methods of ozone and photocatalysis to synergistically treat high-concentration wastewater, improves treatment efficiency, reduces the amount of ozone put in, reduces the use of corrosive raw materials, reduces equipment loss, and reduces The production cost is increased, the contact area between the photocatalyst and the wastewater to be treated is increased, the replacement and recovery of the photocatalyst is convenient, and the degradation efficiency is improved.

The invention belongs to the technical field of nanomaterial dispersion liquid and discloses antifreeze nanomaterial dispersion liquid and a preparation method thereof. The antifreeze nanomaterial dispersion liquid is technically characterized by comprising a nanomaterial and single-phase liquid, a weight part ratio of the nanomaterial to the single-phase liquid is 1:(1-3), and the single-phase liquid includes one of pure water, alcohol liquid or ketone liquid. The prep0aration method includes steps of determination of a maximum content of the antifreeze dispersion liquid stabilization solid-phase nanomaterial in liquid, determination of stirring time and preparation of antifreeze nano dispersion liquid. After freezing and thawing cycle, influences on original performances are effectivelyreduced, and accordingly catalytic efficiency and performances of the nanomaterial dispersion liquid are guaranteed fundamentally. The preparation method is simple and convenient to operate, and dispersity, stability and freeze resistance of the nanomaterial dispersion liquid can be improved.

The invention discloses a magnetic sandwich-structured MOFs (metal-organic frameworks) material and a preparation method, and belongs to the field of material synthesis. The core of the material is MOFs, the MOFs core is coated with a layer of nano-Fe3O4 particles, and an MOFs thin layer is arranged outside the nano-Fe3O4 particles. The preparation method of the material comprises the following steps: putting MOF particles in an MOF precursor solution, and performing ultrasonic dispersion to obtain suspension A; dispersing Fe3O4 particles and polyvinylpyrrolidone in a polar solvent, and performing ultrasonic dispersion to obtain suspension B; mixing and ultrasonically dispersing the suspension A and the suspension B, performing water bath oscillation and heating to obtain sandwich-structured particles, performing magnetic separation to obtain needed particles, and cleaning and drying the particles. The material can have excellent adsorption and catalytic performance simultaneously, andthe material after adsorption can have better regeneration performance.

The invention discloses a device for tritiation removal of tritium-containing water and an implementation method thereof. The problems that a tritium-containing water tritiation removal device is complicated in process and high in energy consumption are solved by adopting the device. The device comprises a first liquefaction system, a steam heating device, a catalytic reaction section, a second liquefaction system and a product water collecting tank which are connected with one another from top to bottom in sequence, a steam generator connected with the steam heating device, and a raw water storage tank connected with the steam generator, wherein a hydrophilic catalyst is filled in the catalytic reaction section. The device disclosed by the invention is reasonable in structure, convenient and rapid in operation and high in tritiation removal efficiency, and can be used for transferring tritium into hydrogen from tritium-containing steam by virtue of a manner that the tritium-containing water and hydrogen flow reversely, thus realizing the tritiation removal of the tritium-containing water, and purifying the tritium-containing water; the device greatly reduces the energy consumption and cost, thus having very high application values.