46results about How to "Preparation method simple green" patented technology

The invention provides an ortho-carborane based benzothiazole structure containing semi-sandwich iridium complex and a preparation method thereof. According to the ortho-carborane based benzothiazolestructure containing semi-sandwich iridium complex, a dinuclear iridium compound [Cp*IrCl2]2 is used as a raw material, and the dinuclear iridium compound reacts with n-BuLi and ortho-carborane basedbenzothiazole to obtain a trivalent iridium complex with the ortho-carborane based benzothiazole structure. A synthetic process provided by the invention is simple and environment-friendly, and has excellent selectivity and higher yield. The ortho-carborane based benzothiazole structure containing semi-sandwich iridium complex provided by the invention has stable physicochemical property, thermalstability and the like, the polymerization of ethylene can be efficiently catalyzed at an atmospheric pressure under a condition with MAO as a catalyst promoter, and the obtained polymer also has higher molecular weight.

The invention relates to a ruthenium complex containing an ortho-carbonboryl benzoxazole structure and preparation and application thereof. A preparation method of the ruthenium complex comprises thefollowing steps that 1, an n-BuLi solution is added into an ortho-carborane solution for a reaction at the room temperature for 30-60 minutes; 2, bromobenzoxazole is added for a reaction at the room temperature for 6-8 hours; 3, [(p-cymene)RuCl2]2 is added for a reaction at the room temperature for 3-5 hours, and post-treatment is carried out to obtain the ruthenium complex; the ruthenium complexis used for catalyzing auto-oxidation coupling of primary amines to prepare imine compounds. Compared with the prior art, the prepared bivalent semi-sandwich ruthenium complex containing the ortho-carbonboryl benzoxazole structure has the advantages that the ruthenium complex has stable physical and chemical properties and thermal stability and is still stable at the high temperature of 300 DEG C;moreover, the preparation method is simple and environmentally friendly, and the ruthenium complex achieves excellent catalytic activity and a high yield in the reaction of catalyzing auto-oxidationcoupling of primary amines to prepare imine compounds.

The invention discloses a method of preparing near-infrared carbon quantum dots by taking Coomassie brilliant blue as a carbon source. The preparation method comprises the following steps: weighing a certain amount of turmeric extraction residue, placing the turmeric extraction residue in a reaction kettle, adding an appropriate amount of secondary water, placing the turmeric extraction residue in an electrothermal blowing dry oven and reacting, after the reaction is ended, taking out the turmeric extraction residue, naturally cooling to a room temperature, and filtering to obtain a carbon quantum dot solution for later use; preparing a Coomassie brilliant blue solution, uniformly mixing the Coomassie brilliant blue solution with carbon quantum dots, adding an appropriate amount of secondary water, transferring the mixed solution to a hydrothermal reaction kettle, placing the mixed solution in the electrothermal blowing dry oven for reacting, after the reaction is ended, taking out the mixed solution, naturally cooling to the room temperature, and filtering to obtain the near-infrared carbon quantum dots. The product obtained by the method disclosed by the invention is stable in property and good in fluorescence performance, has important application value in the fields of bioimaging, sensing, medicine delivery, photocatalysis, biological living imaging and the like, and uses the turmeric extraction residue as a raw material for realizing waste recycling without the need of a catalyst.

The invention discloses a method for preparing a fuel cell catalyst, comprising the following steps of: adding H2PtC16, carriers and glucose to de-ionized water, adjusting the pH value, and obtaining turbid liquid after reaction; adding a NaBH4 solution to the turbid liquid, and then obtaining the fuel cell catalyst after reaction. According to the method disclosed by the invention, Pt atoms are obtained by reducing H2PTC16 by NaBH4. According to the method, with the glucose as a protector, Pt atoms are controlled to act with the hydroxyl of the glucose by adjusting the pH value, and the deposition of the newly produced Pt atoms is controlled, thus the grain diameter of the fuel cell catalyst is controlled. The method is capable of controlling the grain diameter of the prepared fuel cell catalyst and the dispersibility of the prepared fuel cell catalyst is better. In addition, because the glucose as the protector employed in the method can be removed by methods, such as water washing, the increase of the grain diameter of Pt nanoparticles caused by removing the protector through thermal treatment is avoided and the methane electro-catalytic activity of the catalyst is improved.

The invention discloses a preparation and application of a dendritic mesoporous silica/iridium dioxide composite nanometer enzyme. The preparation method comprises the following steps: uniformly mixing iridium dioxide nanoparticles with dendritic mesoporous silica modified by amino group on the surface according to a certain proportion, and standing for 6-12hours. The iridium dioxide nanoparticlesprepared by the laser ablation method have no ligands on the surface, can fully contact with the substrate in the catalysis, and are loaded in the dendritic mesoporous silica to improve the thermal stability of the iridium dioxide nanoparticles, and the iridium dioxide nanoparticles have the ability to be recycled, and have little influence on the catalytic activity of the iridium dioxide nanoparticles. It can catalyze the oxidation colouring of TMB in the presence of H2O2, and can be used to synthesize dendritic mesoporous silica/iridium dioxide composite nanoenzyme-acetylcholinesterase cascade reaction system, so as to evaluate the activity of acetylcholinesterase by detecting the absorbance. It has a considerable application prospect in biochemical fields such as the detection of acetylcholinesterase activity.

The invention relates to a gold complex containing a diphosphine ortho-position carborane ligand as well as a preparation method and an application of the gold complex. The gold complex is prepared bythe following method: dropwise adding an n-BuLi solution into an ortho-carborane o-C2B10H12 solution, carrying out a stirring reaction, adding halogenated phosphine, continuously carrying out a reaction, adding aurous chloride AuCl into a reaction system, carrying out a reaction, and carrying out separation after the reaction is finished to obtain the gold complex containing the diphosphine ortho-carborane ligand. Compared with the prior art, the preparation method disclosed by the invention is simple and green, the monovalent gold complex can be obtained at high yield through one-pot reaction, the yield is high, the product separation is simple, and the product is insensitive to air and water and stable in property. The complex can efficiently catalyze the reaction of terminal alkyne andthioamide to synthesize the 2,4-disubstituted thiazole compound, has the advantages of low catalyst consumption, mild reaction conditions, high reaction rate, higher yield and wide substrate range, and has wide application prospects in industry.

The invention relates to a half-sandwich ruthenium complex containing ortho-carborane alkyl benzothiazole as well as preparation and application thereof. The preparation method specifically comprisesthe following steps: i) adding an organic mixed solution of n-butyl lithium into an organic mixed solution of ortho-carborane at the temperature of -70 DEG C to-80 DEG C, then heating to the room temperature, and continuously reacting for 30-60 minutes; ii) adding bromo-benzothiazole, and carrying out a reaction for 6-8 hours at a room temperature; and iii) adding a binuclear ruthenium compound, reacting at the room temperature for 3-5 hours, and separating to obtain the half-sandwich ruthenium complex. The catalyst is applied to preparation of stilbene derivatives by catalyzing condensation reaction of methylbenzene and aromatic aldehyde. Compared with the prior art, the disclosed complex is insensitive to air and water and stable in property, and shows efficient catalytic activity in catalyzing the condensation reaction of methylbenzene and aromatic aldehyde, and the preparation method is simple, green, high in yield, mild in reaction conditions and good in universality.

The invention discloses a method for determining ultratrace oleylamine grafted polysuccinimide based on a carbon dot marked fluorometric immunosorbent method. The method comprises the following steps:preparing PSIOAm coating antigen and immunogen, injecting the immunogen into an animal body to obtain a high-specificity antibody, then preparing C-dots marked PSIOAm antibody into a fluorescent antibody, and then establishing carbon dot fluorometric immunosorbent to accurately determine the content of PSIOAm. By combining the specificity of the antigen and antibody reaction and the carbon dot with high fluorescent quantum yield, the PSIOAm nano particles are quantitatively detected and analyzed. A linear range of the detection method is 5*10<-4> to 5*10<2>ng/mL, and the detection limit can reach 0.15 pg/mL.

The invention discloses a preparation method of an antistatic material taking rhamnolipid as an antistatic coating. The antistatic material is prepared through a method for dipping and coating different materials with the rhamnolipid with the mass percent of 0.0001 percent to 0.4 percent. The treated material is an organic polymer insulating material: polytetrafluoroethylene, polycarbonate, polystyrene, polymethylmethacrylate, nylon, polyethylene, polypropylene, polydimethylsiloxane, polyvinyl chloride and acrylonitrile-butadiene-styrene; an inorganic insulating materials is prepared from silicon, aluminum oxide, mica and glass. The antistatic coating disclosed by the invention is a rhamnolipid monomolecular layer; the electrical conductivity of the surface of the treated material is greatly improved; meanwhile, free radicals on the surface of the material can be eliminated; the preparation method is simple and convenient; the performance of a material body is kept and the antistatic performance of the material is improved; the material has strong applicability and strong universality, is suitable for industrial large-scale application and has wide application value.

The invention relates to application of a palladium complex to a fatty amine formylation reaction. A N,N-coordinated palladium complex containing a meta-carbobane ligand is used as a catalyst, N,N-dimethyl formamide is used as a formylating reagent and a solvent to catalyze the fatty amine formylation reaction to prepare a fatty amine carboxamide compound. Compared with the prior art, the N,N-coordinated divalent palladium complex containing the metacarbanyl ligand in the application is high in catalytic activity under mild conditions and can catalyze the formylation reaction of a fatty amine.DMF is further used as a formylating reagent and a solvent, and is inexpensive, low in toxicity, easy to separate and high in yield (88-96%).

The invention relates to a palladium complex containing a meta-position carborane triazole ligand and a preparation method and application of the palladium complex. The palladium complex is prepared by the following steps: (1) dropwise adding an n-BuLi solution into a meta-position carborane m-C2B10H12 solution, carrying out stirring and reacting, then adding 3-propargyl bromide for a reaction again, and after the reaction is finished, carrying out separating to obtain 1,3-dipropargyl meta-carborane; and (2) under the catalytic condition of a catalyst CuI, carrying out a reaction on 1,3-dipropargyl meta-carborane and aryl azide, then adding PdCl2 into a reaction system, continuing the reaction, and after the reaction is finished, carrying out separation to obtain the palladium complex containing the meta-carborane triazole ligand. Compared with the prior art, the preparation method provided by the invention is simple and green; the complex can efficiently catalyze a coupling reaction of mercaptan and halogenated hydrocarbon to synthesize thioether compounds; reaction conditions are mild, substrate universality is good, catalytic efficiency is high, and few byproducts are produced;and the catalyst has high stability and is not sensitive to air and water.

The invention relates to application of a dinuclear rhodium complex in a fatty amine N-methylation reaction. The dinuclear rhodium complex is taken as a catalyst, CH3I is taken as a methylation reagent, and the fatty amine N-methylation reaction is catalyzed in an organic solvent for preparing a fatty amine N-methylation derivative. Compared with the prior art, according to the application of thedinuclear rhodium complex, the dinuclear rhodium complex has high catalytic activity at the indoor temperature and can be used for catalyzing the fatty amine N-methylation reaction for preparing the fatty amine N-methylation derivative, according to the catalytic reaction, the yield (90-97%) is high, and the reaction conditions are mild; participation of strong alkali is not needed, all the reagents have stable performance for air and water, the requirements for reaction equipment are low, and the dinuclear rhodium complex has a wide industrial application prospect.

The invention discloses bionic biological glue as well as a preparation method and application thereof. The biomimetic biological glue comprises the following components: dopamine modified amino-containing biopolymer, hydroxyl-containing biopolymer, formylated hydroxyl-containing biopolymer, chlorinated metal salt and a solvent. The bionic biogel disclosed by the invention has excellent biocompatibility, electrical conductivity, wet surface adhesion capacity, injectability, self-healing property, biodegradability, hemostasis and healing promotion capacity; meanwhile, network enhancement and adhesion enhancement are achieved through spontaneous biomineralization of metal cations in the bionic biological glue, the hemostasis performance of the material is remarkably improved through introduction of biomineralized metal particles, and the biomineralized metal particles cooperate with dopamine-modified amino-containing biomacromolecules and hydroxyl-containing biomacromolecules together for rapid hemostasis; therefore, the bionic organism has a wide application prospect in the fields of biomedicine and tissue engineering.

The invention relates to a half-sandwich rhodium complex with an ortho-position carborane benzoxazole structure as well as a preparation method and application of the half-sandwich rhodium complex. The structural formula of the rhodium complex is shown in the specification. The preparation method comprises the following steps: firstly, adding an n-BuLi solution into an ortho-position carborane solution, and then reacting for 30-60 minutes at room temperature; adding bromo-benzoxazole, and carrying out a reaction for 6-8 h at a room temperature; and adding [Cp * RhCl2] 2, reacting at room temperature for 3-5 hours, and carrying out post-treatment to obtain the rhodium complex. The rhodium complex can be used as a catalyst to catalyze the asymmetric reduction reaction of aliphatic chiral alcohol compounds synthesized from aliphatic ketones. Compared with the prior art, the rhodium complex disclosed by the invention has the advantages of simple preparation method, stable physicochemical properties, high catalytic activity for asymmetric reduction reaction of aliphatic ketone, mild reaction conditions and the like.

The invention belongs to the technical field of fuel cells, and relates to a preparation method and application of a porous Pd-PdO nanorod. The preparation method comprises the following steps of: mixing 1, 10-phenanthroline serving as a complexing agent, potassium chloropalladite serving as a palladium source and ethanol and water serving as solvents at normal temperature to obtain a 1, 10-phenanthroline-palladium complex precursor; and calcining the 1, 10-phenanthroline-palladium complex precursor at high temperature under an air condition to obtain the porous Pd-PdO nanorod. The porous Pd-PdO nanorod obtained by the preparation method shows enhanced methanol oxidation reaction activity.

The invention relates to application of a microporous carbon material in adsorption and separation of olefin and alkane, and a preparation method of the microporous carbon material comprises the following steps: S1, carrying out hydrothermal reaction on a sucrose solution to obtain coke; and S2, carrying out pore-forming treatment on the coke to obtain the microporous carbon material. The microporous carbon material adopted in the invention has the characteristics of good stability, developed pore structure and large specific surface area, and has high selectivity when being used for dynamic adsorption separation of olefin and alkane.

The invention discloses a method for catalytically synthesizing 1H-imidazole-4-carboxylic acid through an inorganic-salt composite catalyst. Ethyl acetamidoacetate serves as a raw material and is enolized, cyclized, subjected to catalytic oxidation desulfurization and hydrolyzed to prepare the target compound; the method includes the three steps of preparing 2-sulfydryl-4-ethyl imidazolecarboxylate, preparing ethyl imidazole-4-carboxylate and preparing the 1H-imidazole-4-carboxylic acid; the inorganic-salt composite catalyst is prepared in the mode that barium sulfate, ferric nitrate and iron sulfate are compounded. The development method is a synthetic technology which is economical, environmentally friendly and easy to operate; the inorganic-salt composite catalyst is provided and added in an inorganic-salt solid mode, the cost of a raw material of the catalyst is low, a preparing method is environmentally friendly and simple, the selectivity of the catalytic effect of the catalyst is high, the yield is remarkably increased, by products are avoided, the catalyst can be recycled, and the quite high market promotion value is achieved.