35results about How to "The synthesis process is simple and fast" patented technology

The invention discloses a chemical agglomeration promoter for removing fire coal fine particulate matters. The chemical agglomeration promoter is prepared from poly-dimethyl-diallyl-ammonium chloride, sorbitan fatty acid ester and water, wherein the mass percent of poly-dimethyl-diallyl-ammonium chloride is 0.001%-0.01%; and the mass percentage of the sorbitan fatty acid ester is 0.001%-0.1%. The invention also discloses an application method of the chemical agglomeration promoter. The chemical agglomeration promoter is capable of effectively promoting fine particles in a gas flue to agglomerate and flocculate to form large particles, and carrying out integral removal on heavy metals in a flue gas; the efficiency of a dust remover for removing fine particulate matters is improved; and the environment problem is effectively relieved.

The invention provides a hollow microsphere molecular sieve, a preparation method thereof and application thereof to arene preparation through methyl alcohol conversion. The hollow microsphere molecular sieve provided by the invention comprises a shell and a macroporous structure, wherein the shell is formed by stacking ZSM-5 crystalline grains, and the macroporous structure is formed by being wrapped with the shell. The hollow microsphere molecular sieve is of a multi-stage pore structure. Multi-stage pores comprise macropores, mesopores formed by stacking the ZSM-5 crystalline grains, and micropores of the ZSM-5 crystalline grains. The hollow microsphere molecular sieve provided by the invention is of the multi-stage pore structure, and can be used as a catalyst for reaction during arene preparation through methyl alcohol conversion; reactant molecules enter an inner space through the shell, and generated products are further diffused through the shell; compared with other molecular sieves, the reactant molecules are subjected to a larger number of multi-stage reactions on hollow microspheres, and accordingly the selectivity of arene is improved; and since the mesopores formed by stacking the ZSM-5 crystalline grains and the internally hollow macropores in the shell are beneficial to diffusion of the products, the service life of the catalyst is greatly prolonged.

The invention provides a hollow microsphere molecular sieve. The hollow microsphere molecular sieve comprises a shell formed by stacking MFI molecular sieve grains, and a macroporous structure wrapped by the shell. The hollow microsphere molecular sieve has a hierarchical pore structure, and hierarchical pores include macropores, mesopores formed by stacking MFI molecular sieve grains, and micropores of MFI molecular sieve grains. Silicon and oxygen serve as framework elements of the molecular sieve. The invention further provides a preparation method of the hollow microsphere molecular sieve. According to the preparation method, a templating agent is used in cooperation with an EDTA chelating agent, the pH value of the system is maintained at 8-11, hollow microspheres are formed through the electrostatic interaction between EDTA4- and positive ions of the templating agent, gel is wrapped in the hollow microspheres, and hierarchical pore hollow microspheres are obtained through hydrothermal crystallization and modification. The synthesis process is simple and fast, it is not needed to prepare seed crystals in advance, product separation is easy, and the preparation method is suitable for industrial production.

The invention provides a chemical agglomeration promoter.The chemical agglomeration promoter is prepared from, by mass, 0.001%-0.01% of polyethyleneimine, 0.001%-0.1% of tween-80 and the balance water.The chemical agglomeration promoter is wide in raw material source, low in price, environmentally friendly, simple in chemical composition, simple and fast in synthesis process and free of harm to the environment; the agglomeration effect on fine particulate matter is significant, and the fine particulate matter emission of a coal-fired power plant can be reduced by 60% or above; besides, the chemical agglomeration promoter does not contain acid matter, and thus corrosion to flue equipment can be avoided; moreover, as most toxic heavy metals are gathered on fine particulate matter, heavy metals can be integrally removed with the chemical agglomeration promoter.

The invention belongs to the technical field of advanced nanocomposites, and particularly discloses a high-dispersity hollow anti-bell ringing type copper/silicon dioxide core-shell nanoparticle and a preparation method thereof. The preparation method comprises the following steps: synthesizing a copper nanoparticle with uniform morphology and size by adopting a high-temperature decomposition method; coating a layer of uniform silicon dioxide on the surface of the nanoparticle by using a cyclohexane/ammonia water reversed-phase micro-emulsion method so as to form a copper/silicon dioxide core-shell structure; and finally carrying out processing under an alkaline condition by utilizing a hydrothermal method so as to obtain the high-dispersity hollow anti-bell ringing type copper/silicon dioxide core-shell nanoparticle. The hollow anti-bell ringing type nanoparticle has the advantages of being high in copper metal dispersity, uniform in morphology and high in specific surface area, and has important application prospect in the fields of adsorptive separation and catalysis. According to a synthesis method provided by the invention, the control carried out on the specific surface area and copper dispersity of the hollow anti-bell ringing type core-shell nanoparticle can be realized. The synthesis raw materials are easy to get and the method is simple and rapid, so that large-batch synthesis can be realized.

The invention discloses a synthetic method of an alpha-quaternary carbon-contained alpha, beta-diamino acid derivative. The alpha-quaternary carbon-contained alpha, beta-diamino acid derivative is obtained by treating a diazo compound, an imine and a phosphoramidate as raw materials, chiral phosphoric acid and rhodium acetate as catalysts, an organic solvent as a solvent and a molecular sieve as a water absorbent, and carrying out a catalytic reaction. The synthetic method of the invention has the advantages of simple and easily available raw materials, simple and safe operation, high atom economy, high yield and high selectivity. The alpha-quaternary carbon-contained alpha, beta-diamino acid derivative obtained through the method of the invention, which has a diverse compound skeleton, has a very important meaning to a new medicine screening and preparing technology.

The present invention relates to a method that synthesizes the silicone prepolymer containing double bond and various chain segments, in sequence, by the cohydrolysis of silane containing hydrogen, silane containing chloro and alkoxy silane, and the reaction with allyl compounds under catalytic agent. The prepolymer will be copolymerized with (meth)acrylate to acquire the surface hydrophobic strength- controllable silicone modified acrylic resin composite. The composite is water soluble, and has good adhesion, gloss, softness, hydrophobicity and weatherability; it is regulable for the hydrophobic, antifouling and scrubbing resistant abilities of the composite surface, according to demands. Moreover, the product is simple in its production process, low in its cost, and very friendly to environment, which can be used in various fields such as leather, textile, construction and ship.

The invention discloses a F-18 tagged P2X7 receptor imaging agent which is a compound 18F-{(2-chloro-3-trifluorophenyl)(1-(pyrimidin-2-yl)-6,7-dihydro-1H-[1,2,3]triazolo[4,5-c]pyridin-5(4H)-yl)methanone shown as formula I. The P2X7 receptor imaging agent is suitable for identifying and diagnosing pulmonary inflammation and tumors.

The invention discloses a method for synthesizing a clenbuterol hydrochloride molecularly imprinted polymer. The method comprises the following step: by using clenbuterol hydrochloride as a template molecule and alpha-methacrylic acid as a functional monomer and performing interaction in the form of hydrogen bonds, adding a crosslinking agent N,N-methylene-bis acrylamide and an initiator ammonium persulfate to perform free radical copolymerization, thereby obtaining the clenbuterol hydrochloride molecularly imprinted polymer, wherein the mole ratio of the template molecule, functional monomer and crosslinking agent is (117-274):(1-300):(30-90). The clenbuterol hydrochloride molecularly imprinted polymer has the advantages of simple and quick synthesis process, low cost, high specificity and favorable stability, can be combined with a test paper method to prepare a test paper strip, and is used for trace on-line detection of clenbuterol hydrochloride.

The invention discloses a preparation method of multi-substituted indanol derivatives. The diazo compound, alcohol and o-formyl chalcone are used as raw materials, a metal catalyst is used as a catalyst, an organic solvent is used as a solvent, and a molecular sieve is used as a water absorbent; and the multi-substituted indanol derivatives are obtained by one-step reaction. According to the preparation method disclosed by the invention, the raw materials are easily available, the operation is simple and safe, and the method is suitable for industrial production.

The invention relates to a rotation, confluence and agglomeration tower and a method for agglomeration dedusting by adopting the rotation, confluence and agglomeration tower. The rotation, confluence and agglomeration tower comprises a cylindrical tower body, at least one flow guide pipe used for leading in flue gas is arranged on the lower portion of the tower body, each flow guide pipe is connected with the tower body in a tangent manner, and a flue gas outlet is arranged at the top of the tower body; multiple spray layers used for blowing and jetting agglomeration liquid are arranged in the tower body from bottom to top in sequence, and a rotational flow device used for enabling flue gas to form a turbulence state after passing is arranged at least between the two bottommost spray layers. Good agglomeration and dedusting effect can be achieved, subsequent dedusting burden is alleviated effectively, the subsequent dedusting process can even be cancelled, the national flue gas emission standard is met, and meanwhile equipment investment and running cost are lowered.

The invention relates to a method for preparing a series of novel phosphinimine ruthenium carbine complexes with high thermal stability and application of the novel phosphinimine ruthenium carbine complexes to the metathesis reaction of olefin, and mainly overcomes the disadvantages that the asymmetric transformation exists and the reaction still cannot be effectively realized at high temperature in the metathesis reaction for forming tetrasubstituted olefin under the catalysis of a ruthenium carbine complex, the ruthenium carbine complex is not applicable to basic functional groups (such as NH2- and CN-) and the initiation rate and increment rate are low in the previous literature. The problems can be well solved by adopting the technical scheme of metal ruthenium carbine complex ligands which have a general formula of Ru(=CHAr)Cl2L(R<1>P=NR<2>) and the synthesis thereof, wherein Ar is (C6-C14) aryl; L is an uncharged electron donor, namely a phosphino or aza five-membered ring carbine ligand; R1 is phenyl, cyclohexyl, tert-butyl, ortho-pyridyldiphenyl, and ortho-furyldiphenyl; and R2 is aryl, pyridyl and picolyl.

In the present invention there is provided an MnO₂ anode with improved electrochemical properties, and a method of preparation of an anode, wherein there anode comprises a substrate at least partially coated with MnO₂ nanosheets (MnNSs) forming additive free MnO₂ thin films. The method includes providing MnO₂ nanosheets (MnNSs) suspension with diameters less than 50 nm; printing the MnNSs suspension on substrates to form MnO₂ thin films (MnTFs); and annealing the MnTFs at 260-320° C. for at least 100 minutes. Energy storage device comprising the MnO₂ anode such as a Na-ion cell, and a Li-ion cell are also described.

The invention discloses a Raman detection method for trace CO by taking Au (at) M (at) CeO2 as an enhanced substrate, M is Pt or Pd, and the Raman detection method specifically comprises the following steps: (1) synthesizing core seed Au (at) M core-shell structure nanoparticles; (2) centrifugally cleaning the inner core seeds, and dispersing the inner core seeds in a surfactant CTAB (Cetyltrimethyl Ammonium Bromide) solution; (3) preparing Au (at) M (at) CeO2 core-shell structure nanoparticles; (4) washing and concentrating the Au (at) M (at) CeO2 core-shell structure nanoparticles, and dripping the Au (at) M (at) CeO2 core-shell structure nanoparticles on a clean silicon wafer; (5) applying different reaction atmospheres to carry out in-situ Raman spectrum research to detect SERS signals; and (6) analyzing and comparing the SERS signal obtained in the step (5) to obtain the catalytic reaction process on the multilayer core-shell nanostructure. According to the invention, cerium oxide is modified on the surface of the Au (at) M core-shell nanostructure to construct interface existence of metal-CeO2, so that the existence of trace CO in a to-be-detected system can be sensitively detected, and CO can be easily desorbed by switching into oxygen, so that the substrate can be repeatedly and stably used for multiple times.

The invention relates to a method for synthesizing ultrahigh-viscosity water-soluble block polyether by a one-pot process, which comprises the following steps: placing a compound containing reactive hydrogen in a reaction kettle, adding a phosphazene catalyst to catalyze nucleophilic substitution reaction between the reactive hydrogen and initial polyether, vacuumizing, and heating to 130-150 DEG C in the reaction kettle; introducing a mixture of ethylene oxide and propylene oxide into the reaction kettle, and carrying out nucleophilic substitution reaction on the mixture and reactive hydrogen to generate polyether polyol; introducing ethylene oxide into the reaction kettle to generate ethylene oxide-terminated polyether polyol; after the reaction is finished, aging until the pressure in the reaction kettle is unchanged; introducing an isocyanate cross-linking agent; reacting the primary hydroxyl group in the ethylene oxide terminated polyether polyol of the primary hydroxyl group to generate macromolecular polyether polyol; and vacuumizing to remove the solvent to obtain the ultrahigh-viscosity water-soluble block polyether. The alkali metal content in the polyether is reduced, the molecular weight of the polyether is improved, and the viscosity of the water-soluble block polyether is increased.