Eureka-AI is an intelligent assistant for R&D personnel, combined with Patent DNA, to facilitate innovative research.
Eureka AI

1112 results about "Diethylenetriamine" patented technology

Diethylenetriamine (abbreviated DETA and also known as 2,2’-Iminodi(ethylamine)) is an organic compound with the formula HN(CH₂CH₂NH₂)₂. This colourless hygroscopic liquid is soluble in water and polar organic solvents, but not simple hydrocarbons. Diethylenetriamine is structural analogue of diethylene glycol. Its chemical properties resemble those for ethylene diamine, and it has similar uses. It is a weak base and its aqueous solution is alkaline. DETA is a byproduct of the production of ethylenediamine from ethylene dichloride.

Carbon nitride/titanium dioxide nanosheet array heterojunction photocatalyst and preparation method

The invention relates to a carbon nitride/titanium dioxide nanosheet array heterojunction photocatalyst and a preparation method, belonging to the technical field of photocatalysis of nanometer materials. The catalyst is prepared through the following steps: with g-C3N4 as a carrier, titanium isopropoxide as a titanium source, diethylenetriamine as a morphology controlling agent and isopropanol as a solvent, performing a solvothermal method so as to prepare a g-C3N4/TiO2 precursor, and carrying out calcination treatment so as to obtain a g-C3N4/TiO2 nanosheet array heterojunction composite photocatalyst for the first time. The heterojunction composite photocatalyst shows pure and significantly-improved photocatalytic hydrogen production activity to g-C3N4 and anatase TiO2 nanosheet mesoporous spheres in a photocatalytic hydrogen production reaction. The preparation method has the advantages of simple and convenient operation, easy control, greenness, environmental protection and good application prospects. The series of catalysts has multilevel structure; and a g-C3N4/TiO2 nanosheet array heterojunction structure is formed through vertical and staggered growth of anatase TiO2 nanosheets with regular shape and uniform size on the surface of g-C3N4. The catalyst has excellent photocatalytic hydrogen production activity, good stability, high repeatability and facilitation large-scale production.

Graphene material modified by water-soluble anthraquinone compound and preparation method of graphene material

The invention discloses an oxidized graphene material modified by a water-soluble anthraquinone compound and a preparation method of the graphene material and belongs to the technical field of water treatment of environmental engineering. The mass percent of the water-soluble anthraquinone compound in the material is 1-5%. The preparation method comprises the following steps: dispersing oxidized graphene into de-ionized water; adjusting the pH (Potential of Hydrogen) to 9-11 by using ammonia water; adding diethylenetriamine and reacting under a water bath condition at the temperature of higher than 95 DEG C; drying to obtain amino-modified graphene powder; dispersing the amino-modified graphene powder into a mixed solution of dichloromethane and absolute ethyl alcohol with the volume ratio of not more than 1 to obtain a mixed system in which the mass volume percent of the amino-modified graphene is 0.1%; and adding a dichloromethane solution of an anthraquinone compound containing a sulfonyl chloride radical and reacting at a room temperature. The material has a very good catalytic performance and the anaerobic organism conversion speed of organic matters which are difficult to degrade can be improved; the secondary pollution problem to the environment, caused by the loss of the water-soluble anthraquinone compound, is solved.

Preparation method for modified walnut shell cation adsorbent

The invention discloses a preparation method for a modified walnut shell cation adsorbent, belongs to the field of modified adsorbent material preparation, and particularly relates to a preparation method for the modified walnut shell cation adsorbent used for adsorption removal of anionic dye in printing and dyeing wastewater. According to the preparation method, waste materials such as walnut shells are used as raw materials; in an alkaline environment, epichlorohydrin is used as an etherifying agent, diethylenetriamine is used as a crosslinker, modifying is performed in two steps and amino groups are introduced, and the poly-amino-contained modified walnut shell cation adsorbent is prepared in a compound mode. Experiment results show that walnut shells modified through the method can absorb anionic azo dyes to the capacity of 500 mg/g, and the adsorption capacity is nearly 9 times the adsorption capacity of non-modified walnut shells. The modified walnut shell cation adsorbent is wide in raw material source, high in mechanical strength, good in chemical stabilization, low in costs, easy to regenerate, simple in modifying method, applicable to the field of printing and dyeing wastewater treatment and high in removal rate, reliable and efficient and has an extremely good prospect.

Carbon nano point with high fluorescence quantum efficiency and preparation method thereof

The invention discloses a carbon nano point with the high fluorescence quantum efficiency and a preparation method thereof, belongs to the field of nano material science, and solves the technical problems in the prior art of high cost, operation complication, and time and labor consumption in the preparation method of the carbon nano point, and low fluorescence quantum efficiency and poor water solubility of the prepared carbon nano point. The carbon nano point disclosed by the invention takes a polycarboxylic acid or polyhydroxy compound as a carbon source, or amino acid as the carbon source, and diethylenetriamine as a surface for passivating and modifying; the carbon nano point can be prepared by using the processes of low-temperature pyrolyzation, precipitating and washing, dialysis and separation, and freezing and drying. The carbon nano point disclosed by the invention is simple in preparation method, and low in cost and and the large-scale production is convenient to carry out; the prepared carbon nano point is in a solid state, convenient to store, good in water solubility, high in fluorescence quantum efficiency (88.6%), stable in fluorescent property, wide and adjustable in range of emission wavelength, good in biocompatibility, and low in toxicity, and contains a large quanity of functional groups, so that the further derivation is facilitated; the application range of the carbon nano point in the fields of organisms, medicine and the like can be broadened.

Modifier for black metal surface matrix and production method thereof

The invention discloses a modifier for a black metal surface matrix. The modifier comprises the following raw material components in part by weight: 7 to 9 parts of aminotriacetic acid, 7 to 9 parts of lauric acid, 5 to 7 parts of malic acid, 3 to 5 parts of sorbic acid, 0.3 to 0.5 part of diethylenetriamine and 78 to 90 parts of water. A production method for the modifier comprises the following steps of: putting the water into a reaction kettle, then putting the aminotriacetic acid into the reaction kettle, fully stirring the water and the aminotriacetic acid till full dissolution, putting the lauric acid, the malic acid, the sorbic acid and the like into the reaction kettle respectively, fully stirring the components uniformly and melting the mixture, raising the temperature to be between 60 and 70 DEG C, keeping the temperature constant, reacting and chelating the melt for 1 hour at the constant temperature with stirring, then standing and performing natural complex reaction for 1 hour, finishing chelating when the solution is converted into a clear substance, obtaining a modifier finished product, and discharging, packing and selling the product. The modifier can be used for a long term; and the production method does not need discharge, only needs to continuously add raw agents, does not produce acid mist, acid gas or sour, does not drain waste water, and has no environmental pollution. The modifier enhances black metal facilities and equipment, and high-temperature resistance and oxidation corrosion resistance of products reaches over 2 times; and the modifier enhances the friction impact resistance of the black metal by over 2 times, and has quite considerable economic benefit and wide application.

Novel nano-composite double network hydrogel and preparation method thereof

InactiveCN101880440ASucrosePolyvinyl alcohol
The invention relates to a novel nano-composite double network hydrogel and a preparation method thereof. The preparation method of the hydrogel comprises the steps of: performing a condensation (polycondensation) reaction of amines and epichlorohydrin or polyalcohol and aldehydes in clay solution to obtain a condensate (polycondensate)/clay composite first; and adding a hydrophilic monomer under the action of an initiator and a cross-linking agent to obtain the nano-composite double network hydrogel through free radical crosslinking polymerization, wherein in the condensation (polycondensation) reaction, the amines are selected from dimethylamine, methylamine, ethylamine, propylamine, diethylamine, quadrol, propylene diamine, diethylenetriamine, triethylenetetamine and tetraethylenepentamine, the polyalcohol is selected from glycol, propanediol, glycerol, butanediol, neopentyl glycol, pentaerythritol, polyvinyl alcohol, polyethylene glycol, glucose, sucrose, sorbierite, soluble starch and chitosan, the aldehydes are selected from formaldehyde, malonaldehyde and glutaraldehyde, clay is selected from laponite, bentonite or hydrophilic modified bentonite, and the hydrophilic monomer is selected from acrylic acid, acrylamide, N-Isopropylacrylamide, methacrylic acid, acrylonitrile and propene sulfonic acid. The novel hydrogel has the excellent mechanical strength under the condition of high moisture content.
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products