167 results about "Aminotroponiminate" patented technology

The invention relates to a novel ZnIn2S4 / NH2-MIL-125(Ti) composite visible-light catalyst and belongs to the technical field of photocatalysis. The novel ZnIn2S4 / NH2-MIL-125(Ti) composite visible-light catalyst is characterized in that ZnIn2S4 is nanosheet-shaped and is uniformly distributed on the surface of lumpy NH2-MIL-125(Ti), and the mass percent of the NH2-MIL-125(Ti) is 20.0% to 6.0%. A preparation method comprises the steps: (1) dissolving a certain amount of tetrabutyl titanate and 2-amino terephthalic acid in a mixture solution of N,N-dimethylformamide and methanol, and carrying out a crystallizing reaction for 48 hours in an autoclave at the temperature of 150 DEG C, so as to obtain the NH2-MIL-125(Ti); (2) dispersing the synthesized NH2-MIL-125(Ti) into a certain volume of ethanol in an ultrasonic dispersion manner, then, sequentially adding a certain amount of propanetriol, indium chloride, zinc chloride and thioacetamide into the dispersion while carrying out stirring, carrying out a crystallizing reaction for 10 hours in an autoclave at the temperature of 180 DEG C to 200 DEG C so as to obtain a solid product, and subjecting the obtained solid product to filtrating, washing and drying, thereby obtaining the ZnIn2S4 / NH2-MIL-125(Ti) composite visible-light catalyst. The preparation method of the composite visible-light catalyst is environmentally-friendly and is simple in process. The prepared composite catalyst has very high visible-light catalytic activity and has a potential application value in photocatalytic hydrogen production using solar energy.

The invention discloses a modified zirconium-based organic metal framework adsorbent for adsorbing lead ions as well as a preparation method and application of the modified zirconium-based organic metal framework adsorbent. The method comprises the following steps: reacting 2-aminoterephthalic acid, zirconium tetrachloride and hydrochloric acid in N, N-dimethylformamide to obtain a product UiO-66-NH<2>, then reacting the product UiO-66-NH<2> with glutaraldehyde to obtain a product UiO-66-GD, and reacting UiO-66-GD with 6-amino-2-thiouracil to obtain the modified zirconium-based organic metal framework adsorbent UiO-66-ATA. The method is simple to operate, the preparation method is simple, raw materials and reagents are cheap and easy to obtain, the obtained metal organic framework can be compatible with various functional groups, has ultrahigh specific surface area and permanent porosity, has high selectivity and high flux adsorption effect on lead ions, a novel efficient adsorption material is provided for lead-containing sewage treatment, and a new method is provided for design and synthesis of the novel adsorption material.

The invention relates to a preparation method of 3, 5-diaminobenzoic acid, which is characterized in that: the 3, 5-dinitrobenzoic acid is taken as raw material, carbinol or ethanol as a solvent, and added with a catalyst; a reduction reaction is carried out between the 3, 5-dinitrobenzoic and hydrogen of theoretical reacting weight for 2-10 hours under the reaction pressure of 0.1 MPa to 5MPa as well as the reaction temperature of 20 DEG C to 150 DEG C, thereby obtaining crude product; the crude product is separated and removed off the solvent to obtain the 3, 5-diaminobenzoic acid product, wherein, the dosage ratio of materials is calculated on the basis of 1mol of 3, 5-dinitrobenzoic acid, the dosage of the carbinol or ethanol is 200ml to 1000ml, and the dosage of the catalyst is 0.5 percent to 10 percent of the weight of the 3, 5-dinitrobenzoic acid; the catalyst is either Raney nickel or an active carbon carrier. The method has short technological line, product purity up to 95 percent and yield rate over 96 percent and causes no 'three wastes' (waste gas, waste water and waste residues) pollution and the catalyst can be recovered for later use.

The invention belongs to the field of solid composite catalysts, and provides a C3N4-supported acid / alkali bifunctional metal organic framework (MOFs) based composite catalyst, and a preparation method and an application thereof. The preparation method comprises the steps of: 1) dissolving carbon nitride and dopamine hydrochloride in a trihydroxymethyl-aminomethane buffer solution prepared before,performing a stirring reaction, and filtering, washing and drying a reaction product after the reaction is finished to prepare C3N4@PDA; 2) dissolving a zirconium salt, 2-aminoterephthalic acid and mono-sodium 2-sulfuric terephthalate in a weak-acid solution and performing ultrasonic dispersion, adding the C3N4@PDA to the mixture system, and performing vibrating mixing and a water bath reaction;3) centrifugally collecting and washing the reaction product; and 4) filtering and vacuum-drying the product to prepare the C3N4-suppported acid / alkali bifunctional MOFs-based composite catalyst, which has a porous structure and large specific surface area, and has beneficial to adsorption of glucose molecules, thus improving isomerization process and dehydration reaction.

The invention relates to an electronic cigarette liquid, a preparation method thereof and a novel acid for preparing a nicotine salt and an electronic cigarette. The electronic cigarette is prepared from the following raw materials in parts by weight: 1 to 5 parts of nicotine, 2 to 10 parts of organic acid and 50 to 300 parts of organic solvent, wherein the organic acid is any one or a mixture ofnicotinic acid, parafluorobenzoic acid and para aminobenzoic acid. The electronic cigarette is prepared through reaction of the nicotine and a specific type of organic acid in the organic solvent. Compared with other existing electronic cigarette liquids, the electronic cigarette liquid disclosed by the invention has the advantages of lower nicotine salt concentration (the content of the nicotineis lower than or equal to 20mg / mL), better smoking feel, unique atomizing effect and smoking feel, and certain health care function.