148 results about "Ammonium Cation" patented technology

The invention discloses a method for passivating a perovskite solar cell by using diphenylamine ammonium salt and a derivative thereof, and belongs to the technical field of perovskite solar cells. According to the method, diphenylamine ammonium salt and a derivative thereof are introduced as an interface modification layer of perovskite through a solution spin-coating process, so that in-situ passivation is realized. The diphenylamino ammonium salt and the derivative thereof can effectively reduce surface defects of perovskite, passivate uncoordinated lead ions, supplement iodine vacancies, significantly reduce non-radiative recombination of a perovskite layer and promote charge extraction by virtue of unique properties of the diphenylamino ammonium salt and the derivative thereof, so that the open-circuit voltage and fill factors of the perovskite solar cell are improved. Meanwhile, large-volume ammonium cations can be gathered on a crystal boundary, so that the defect of the crystal boundary is filled, and ion migration is inhibited. In addition, after passivation, moisture can be effectively prevented from invading the three-dimensional perovskite structure, and the humidity stability and the storage stability of a cell device are remarkably improved. The invention aims at improving the photoelectric conversion efficiency of the perovskite solar cell and realizing the long-term stability of the device performance.

The present invention relates to the technical field of inorganic materials, and particularly to a method for clean smelting of beryllium oxide and beryllium oxide. The smelting method includes using iron powder to remove trivalent iron in the acid leaching solution of beryllium ore; using a non-saponified extraction system without sodium ions and ammonium cations, and the non-saponified extraction system exchanges hydrogen ions with itself when extracting beryllium ions. The present invention solves the problems existing in beryllium smelting preparation in the prior art, such as low beryllium recovery rate, easy interference by associated elements, large pollution, and difficult waste liquid treatment. An alkaline earth metal compound is used as a raffinate impurity removal reagent and a non-saponified extraction system, and the raffinate after impurity removal is recycled for beryllium ore leaching, improving the beryllium recovery rate and reducing the environmental pollution caused by waste liquid discharge.

The present invention provides a multifunctional silane coupling agent, which is prepared from commercially available 3-aminopropylsilane coupling agent, acryloxy polyetheramine, and one of an alkylating agent, polyether sulfonate, γ-propane sultone or γ-butyrolactone through Michael addition reaction and quaternization reaction. The multifunctional silane coupling agent is a new variety carrying zwitterions, quaternary ammonium cations and polyether chains, enriching the functions and application scope of silane coupling agents. It can endow some modified materials with surface hydrophilicity, conductivity, antibacterial, antifogging, antifouling, biocompatibility, anticoagulant and wet lubrication properties, etc. at the same time.

The invention relates to the technical field of oilfield exploitation, and discloses a polysaccharide-containing solid-free drilling fluid and a preparation method and application thereof.The drilling fluid is formed by mixing a plugging anti-collapse agent, a polysaccharide fluid loss agent, a tackifier and the like as raw materials, the functional monomer is prepared by carrying out emulsion cross-linking polymerization under the action of an initiator, the functional monomer structure contains a large number of quaternary ammonium cations and sulfonic acid groups and also contains a biphenyl structure, and the quaternary ammonium cations can generate a strong adsorption effect with shale and silt, so that the plugging effect and temperature resistance of the drilling fluid are improved; polysaccharide is adopted as the filtrate reducer of the drilling fluid, high-viscosity colloid can be formed after the polysaccharide is dissolved in water, stratum pores are effectively blocked, filtrate invasion is reduced, the filter loss is reduced, and the polysaccharide filtrate reducer can improve the viscosity of the drilling fluid, enhance the rock-carrying capacity of the drilling fluid and improve the cleaning effect of a well hole.

The present invention provides: a novel heteropolyoxometalate having a modified lacunary site, obtained by modifying the lacunary site of a heteropoly anion having a lacunary site, using a metal ion, an ammonium cation, an ammonium dication, a phosphonium cation, or a phosphonium dication as a counter cation of the heteropoly anion; or a mixture thereof.

The invention discloses a non-aqueous electrolyte, an electrochemical device and an electronic device. The non-aqueous electrolyte comprises a compound shown as a formula I, and M < + > in the compound shown as the formula I is selected from lithium ions, sodium ions, potassium ions, silver ions, cesium ions, ammonium cations, piperidinium cations, pyrrolidine cations or imidazolium ions; based on the total mass of the non-aqueous electrolyte, the mass ratio of the compound in the formula I is a%, and a is greater than or equal to 0.01 and less than or equal to 1. The electrochemical device provided by the invention has relatively excellent electrochemical performance, and particularly has relatively excellent high-temperature discharge performance. # imgabs0 #

The invention discloses a passivation molecule, the passivation molecule is N-acetyl piperazine halide and N-formyl piperazine halide, the two ends of the passivation molecule respectively contain ammonium cations and carbonyl functional groups, and the passivation molecule shows stable plane orientation preference due to the double-site geometric synergistic anchoring effect of'ammonium-carbonyl '. Therefore, synchronous passivation of double defects can be realized on the surface of the perovskite, and the photoelectric conversion efficiency and the stability of the perovskite solar cell can be improved.

The invention discloses an acidic CO2 electrolysis method, and belongs to the technical field of electrochemical electrolysis. The method comprises the following steps: adding tetramethyl ammonium salt into an acidic catholyte, dissolving and ionizing tetramethyl ammonium cation TMA < + >, contacting the acidic catholyte with inflowing CO2 gas to form an electrolytic reaction system, and carrying out electrocatalytic reduction reaction under an electrolytic condition to generate a carbon-based product. On the basis of effective regulation and control of TMA < + > on an electro-catalysis CO2 reduction double-electrode layer interface, efficient conversion of CO2 to a target product is achieved, the salting-out phenomenon can be avoided in the long-time electrolysis process, the operation life even exceeds 2600 h under the industrial related current density, and excellent activity, selectivity and stability are shown; according to the method, components of the acidic electrolyte of the electrocatalytic reduction CO2 system are redesigned, and a new idea can be provided for designing a novel alkali-metal-free ion mediated acidic CO2 electrolysis system in the future.

The invention discloses application of quaternary ammonium cation modified cellulose as a talc inhibitor, and belongs to the technical field of mineral separation. The quaternary ammonium cation modified cellulose has the following molecular structural formula: # imgabs0 #, R1, R2 and R3 are independently selected from hydrogen or quaternary ammonium salt groups, and at least one of R1, R2 and R3 is a quaternary ammonium salt group; and m / (m + n) is equal to 0.18-0.90. The talc flotation inhibitor has a good selective inhibition effect on talc flotation, and is particularly suitable for efficient flotation separation of metal sulfide ores (such as molybdenite, galena and sphalerite) and talc.

The invention relates to a fabric flavor enhancer containing ester-based quaternary ammonium salt and a preparation method thereof. The fabric flavor enhancer containing ester-based quaternary ammonium salt comprises the following components: polyethylene glycol, an ester-based quaternary ammonium salt solution, modified silicon dioxide, polyquaternary ammonium salt and the like. The modified silicon dioxide is prepared by the following steps: carrying out a blending reaction on hydroxylated silicon dioxide and KH570 to obtain an intermediate product, then carrying out a blending reaction on triethanolamine, acrylic acid, lauric acid and sodium bromoacetate to obtain an intermediate product 2, and finally polymerizing the intermediate product, the intermediate product 2 and hydroxyethyl methylacrylate. Long alkyl chains, quaternary ammonium cations and hydroxyl are introduced into the modified silicon dioxide, so that organic matters on the surface of the modified silicon dioxide form a net-shaped structure; wherein the long alkyl chain can improve the compatibility; quaternary ammonium cations can neutralize charges and make the fabric softer and more fluffy; hydroxyl can adsorb essence, the antistatic performance and the like can be improved, and in addition, silicon dioxide and a net-shaped structure can further enhance the fragrance of the fabric.

The invention discloses a preparation method and application of a titanium silicalite molecular sieve TS-2, and belongs to the technical field of molecular sieves. The preparation method specifically comprises the following steps: (1) adding quaternary ammonium base and quaternary ammonium salt into water, and mixing and stirring; (2) adding a silicon source, mixing and stirring; (3) adding an isopropanol solution of a titanium source, and stirring for hydrolysis; (4) heating and stirring, and heating and crystallizing; and (5) cooling, filtering, washing, drying and roasting. The preparation method comprises the following steps: regulating the pH value to be lower than 12 through a composite template agent (quaternary ammonium base and quaternary ammonium salt), enabling the concentration of tetrabutylammonium cations of a system to be in a relatively high state, and preparing a titanium silicalite molecular sieve TS-2, 3-dibromo-2, 3-dibromo-2, 3-dibromo-2, 3-dibromo-2, 3-dibromo-2, 3-dibromo-2, 3-dibromo-2, 3-dibromo-2, 3-dibromo-2, 3-dibromo-2, 3-dibromo-2, 3-dibromo-2, 3-dibromo-2, 3-dibromo-2, 3- The catalyst has high mass transfer efficiency and high catalytic performance.

A resist composition comprising a base polymer and a quencher is provided. The quencher is a salt compound consisting of a cyclic ammonium cation and an anion derived from a fluorinated 1,3-diketone compound, fluorinated β-keto ester compound or fluorinated imide compound. The resist composition has a high sensitivity and forms a pattern with improved LWR or CDU, independent of whether it is of positive or negative tone.

The invention discloses a monomolecular bifunctional organic catalyst for ring-opening copolymerization of epoxide and cyclic anhydride. The structural formula of the monomolecular bifunctional organic catalyst is shown as a formula (I). In the formula (I), the structural formula of X is shown as the following formula (II-1) or (II-2), and in the formula, B is a boron atom; r1 is selected from alkyl; # imgabs0 # represents a connecting bond; the structural formula of Y is as shown in the following formula (III), wherein O is an oxygen atom; r2 is selected from one or more of Li, Na, K, Cs, quaternary ammonium cations and bis (triphenylphosphine) ammonium cations; l is selected from the group consisting of unsubstituted C4-C11 alkyl groups; the monomolecular bifunctional organic catalyst disclosed by the invention is specially used for the ring-opening copolymerization reaction of epoxide and cyclic anhydride, the TOF of the monomolecular bifunctional organic catalyst can be up to 13500h, and the prepared polymer has high molecular weight and low molecular weight distribution and also shows excellent air stability and thermal stability. # imgabs1 # (I); # imgabs2 # (II-1); 3 # imgabs3 # (II-2); and 4 # imgabs4 # (III).

The invention provides a seven-core tungsten-vanadium heteropolyacid alkoxy derivative and a preparation method and application thereof, and belongs to the organic and inorganic hybrid material technology, the chemical formula of the seven-core tungsten-vanadium heteropolyacid alkoxy derivative is (C16H36N) 2 [WV6O16 {(OCH2) 3CCH2OH} 2], the seven-core tungsten-vanadium heteropolyacid alkoxy derivative is composed of a metal-oxygen cluster anion [WV6O16 {(OCH2) 3CCH2OH} 2] 2-and two tetrabutylammonium cations, the preparation method comprises the following steps: dissolving polytungstate, polyvanadate and a trihydroxymethyl compound in an anhydrous organic solvent according to a ratio, and carrying out microwave-assisted synthesis. According to the preparation method, the Tris functionalized heptanuclear tungsten-vanadium heteropolyacid with the metal tungsten-vanadium ratio of 1: 6 is prepared through a simple microwave-assisted synthesis method, the structural diversity of a tungsten-vanadium heteropolyacid system is enriched, and the synthesized heptanuclear tungsten-vanadium heteropolyacid alkoxy derivative has excellent oxidation-reduction capacity and has extremely high application value in the field of electro-catalytic hydrogen evolution.

Provided are a carbon dioxide absorbing composition including an ionic material containing a cyclic ammonium cation and a method of separating carbon dioxide using the same, and the carbon dioxide absorbing composition of the present disclosure has high thermal and chemical stability and excellent carbon dioxide absorption effect. In addition, the method of separating carbon dioxide using the carbon dioxide absorbing composition is very effective for desorption of carbon dioxide, and is a very economical method since it allows repeated use of the carbon dioxide absorbing composition.

The invention relates to a process for producing a modified isocyanate, comprising the reaction of a monomeric isocyanate in the presence of a catalyst to form a reaction mixture, wherein the catalyst comprises at least one spirocyclic ammonium salt containing at least one spirocyclic ammonium cation and at least one anion. The invention further relates to a modified isocyanate obtainable by the process according to the invention and the use thereof for producing polyurethane bodies or coatings, as well as to the polyurethane bodies or coatings. The invention further relates to one-component or two-component systems comprising the polyisocyanates having improved properties.

To provide a solid composition useful for various treatments of a hydrogen bonding material such as a biological sample.SOLUTION: A compound of formula (I) Wherein each R independently represents a linear or branched hydroxyalkyl group having one or more hydroxyl groups and an alkyl moiety having 1 to 10 carbon atoms; N represents an integer of 1 to 3. The solid composition contains the organic ammonium salt and a biological sample, wherein the mass ratio of the organic ammonium salt to the biological sample is 10:1 to 0.1:1.SELECTED DRAWING: None

The invention relates to the technical field of polyester fibers, and discloses an antistatic polyester fiber for clothing and a preparation method thereof.The polyester fiber contains an antistatic agent, a wear-resistant functional material and other additives, and the antistatic agent is prepared by modifying quaternary ammonium cations on the surface of graphene oxide; the existence of quaternary ammonium cations can enable the surfaces of graphene oxide particles to carry strong positive charges, so that the graphene oxide particles are separated from one another and are uniformly dispersed in the fiber, and the antistatic performance of the fiber is improved by utilizing the conductive effect of graphene, and the wear-resistant functional material is prepared by modifying a polyester type macromolecular substance on the surface of nano tungsten disulfide; pi-Pi conjugation can be formed between the polyester type macromolecular substance and a PET matrix, and a molecular chain of the polyester type macromolecular substance is intertwined and interwoven with a PET molecular chain, so that the nano tungsten disulfide fully plays a role, the strength of the polyester fiber can be enhanced, and the wear resistance of the polyester fiber can be improved by utilizing the self effect of the nano tungsten disulfide.

The present invention relates to the technical field of production of high-purity quaternary ammonium bases, and provides a method for preparing high-purity adamantyl trimethylammonium hydroxide and a high-purity quaternary ammonium base prepared thereby. The method for preparing high-purity adamantyl trimethylammonium hydroxide comprises the following steps: S1, material preparation: adding adamantyl trimethylammonium chloride into water to obtain an aqueous solution, and then adding an adsorbent thereto to obtain a pretreatment solution, wherein the adsorbent contains stearate ions; S2 electrolysis: adding the pretreatment solution to a raw material chamber of an electrolytic cell for electrolysis, so that adamantyl trimethyl ammonium cations enter a cathode chamber through a cation membrane and combine with hydroxide ions generated by the cathode to form adamantyl trimethylammonium hydroxide, so as to obtain a quaternary ammonium base. The method for preparing high-purity adamantyl trimethylammonium hydroxide has the advantage of improving the quality of the quaternary ammonium base product.

A hydrophilic composition that includes at least one of an organic silicon compound represented by formula (1), a condensate of an organic silicon compound represented by formula (1), and the product of reacting an organic silicon compound represented by formula (1) and metal oxide particles makes it possible to obtain a hydrophilic coating film that has excellent durability. (In the formula, the R1s each independently represent a hydrogen atom, a C1–10 alkyl group, or a C6–10 aryl group, the R2s each independently represent a C1–10 alkyl group or a C6–10 aryl group, X represents a hydrogen atom, a k-valent metal cation, or an ammonium cation, k is 1 or 2, provided that k is 1 when X is a hydrogen atom or an ammonium cation, m is an integer from 1 to 10, inclusive, and n is an integer from 1 to 3, inclusive.)

The present invention belongs to the field of rare earth separation, and specifically relates to an ionic liquid extractant and a method for separating yttrium and heavy rare earth. The extractant comprises [A] + Cations and [B] ‑ An ionic liquid composed of anions, wherein the [A] + is a methyl trioctyl ammonium cation having a structure as shown in formula (a), wherein [B] ‑ It has a structure as shown in formula (b), wherein R is selected from a C1-C15 straight chain or branched chain alkyl, preferably a C1-C10 straight chain or branched chain alkyl. The extractant of the present invention has a wide source of raw materials, is non-toxic, has fast equilibrium when extracting rare earths, is easy to strip, has high extraction selectivity, is stable in nature, can be recycled, and has a high extraction rate. #imgabs0#

The present invention provides salts represented by the structure of Formula (I): wherein Q is an ammonium cation; and processes comprising the use of the salts in the preparation of benzodiazepinone compounds, especially bis(fluoroalkyl) derivatives thereof.

The present invention provides a CHA-type zeolite crystallized from a raw material composition containing an N,N,N-trialkylcyclohexylammonium cation as a structure-directing agent, which has a low SiO2 / Al2O3 ratio and can provide a catalyst exhibiting a practical nitrogen oxide reduction rate, a method for producing the same, and at least one of these, a nitrogen oxide reduction catalyst containing the same. [Solution] The present invention provides a CHA-type zeolite having a molar ratio of silica to alumina of less than 13 and a sodium content of 100 ppm to 2000 ppm. Preferably, such a CHA-type zeolite is obtained by a manufacturing method comprising the steps of: crystallizing a composition containing at least an N,N,N-trialkylcyclohexylammonium cation, an alumina source, a silica source, a sodium source, and water, wherein the molar ratio of silica to alumina is 20 or less and the molar ratio of potassium to sodium is less than 0.05 to obtain a crystalline product; removing the N,N,N-trialkylcyclohexylammonium cation from the crystalline product; and contacting the crystalline product with an ammonium salt-containing solution having an ammonium concentration of 1% by mass or more.

The application discloses activated carbon for reducing content of chlorate in water and a preparation method thereof, and belongs to the technical field of wastewater treatment. The application sequentially constructs a chlorinated glycidyl trimethyl ammonium cation layer for electrostatic adsorption of chlorate and a nano zero-valent iron functional layer for chemical reduction of the chlorate on the coconut shell activated carbon through bridging action and chemical grafting of polydopamine, forms a unique 'adsorption-degradation' integrated structure, greatly improves the treatment efficiency, ensures stability of functional components through chemical bonding, avoids secondary pollution, and has remarkable social, economic and environmental benefits.

Provided are a carbon dioxide absorbing composition including an ionic material containing a spiro ammonium cation and a method of separating carbon dioxide using the same, and the carbon dioxide absorbing composition of the present disclosure has high thermal and chemical stability and excellent carbon dioxide absorption effect. In addition, the method of separating carbon dioxide using the carbon dioxide absorbing composition is very effective for desorption of carbon dioxide, and is a very economical method since it allows repeated use of the carbon dioxide absorbing composition.

The present invention provides an application of a multifunctional isocyanate cross-linking agent in the surface modification of an aromatic polyamide composite membrane. Specifically, an aromatic isocyanate cross-linking agent containing diquaternary ammonium cations, disulfobetaine, and polyether chains in its molecular structure is used to graft and cross-link the surface of the aromatic polyamide composite membrane. After the modification, the membrane surface has high hydrophilicity. The intrinsic N-H groups of the aromatic polyamide separation layer are replaced by newly formed aromatic polyamide N-H groups, which participate in the reaction with residual chlorine or chlorine oxides in seawater, effectively ensuring the long-term stability of the aromatic polyamide composite membrane structure.

The present invention relates to a method for producing a precursor for a positive electrode active material, the method comprising: a seed formation step of forming a precursor for a positive electrode active material seed by performing a coprecipitation reaction while supplying a transition metal aqueous solution, an ammonium cation complexing agent, and an alkaline compound to a reactor; and a particle growth step of growing a precursor for a positive electrode active material particle by performing a coprecipitation reaction while supplying a transition metal aqueous solution, an ammonium cation complexing agent, and an alkaline compound to a reaction solution in which the precursor for a positive electrode active material seed has been formed, wherein the supply rate of the transition metal aqueous solution and the supply rate of the ammonium cation complexing agent in the particle growth step are each more than twice the supply rate of the transition metal aqueous solution and the supply rate of the ammonium cation complexing agent in the seed formation step.

The invention belongs to the technical field of solar cells, and particularly relates to a modified passivation material and a preparation method and application thereof. The modified passivation material provided by the invention is obtained by substituting at least one hydrogen atom in the passivation material with a deuterium atom, and the passivation material comprises at least one of an organic ammonium salt formed by organic ammonium cations and halogen anions, and an organic ammonium salt, an organic sulfide or an organic amine formed by the organic ammonium cations and halogen-like anions. The modified passivation material not only can passivate deep energy level and shallow energy level defects in the perovskite solar cell and inhibit phase instability caused by lattice defects, but also can inhibit molecular vibration through a heavy atom effect, effectively reduce molecular recombination energy and reduce energy loss caused by heat loss caused by exciton-phonon coupling.

A method of preparing a positive electrode active material including preparing a composite transition metal hydroxide containing zirconium by a co-precipitation reaction while adding a transition metal-containing solution containing at least one of nickel, cobalt, or manganese, a zirconium-containing raw material, an ammonium cationic complexing agent, and a basic solution into a reactor and preparing a lithium composite transition metal oxide by mixing the composite transition metal hydroxide containing zirconium with a lithium-containing raw material and an aluminum-containing raw material to form a mixture and sintering the mixture. The lithium composite transition metal oxide includes zirconium, aluminum, and at least one of nickel, cobalt, or manganese. A positive electrode active material prepared by the preparation method is also provided.

The invention relates to a preparation method of a multi-cross-linked hydrophilic copper (II) ion imprinted polymer, which belongs to the field of functional high polymer materials and comprises the following two steps: firstly, carrying out free radical copolymerization on an allyl tertiary amine salt modified salicylaldoxime copper (II) complex, a first tonality monomer, a first cross-linking agent and a water-based initiator in water, neutralizing after reaction, filtering and drying to obtain a second tonality monomer; a cross-linked polymer containing copper ions and tertiary amine groups is obtained; the preparation method comprises the following steps: firstly preparing a quaternary ammonium cation hydrophilic cross-linked polymer, then dissolving the quaternary ammonium cation hydrophilic cross-linked polymer in an organic solvent, reacting with an unsaturated alkylation reagent to generate a polymerizable quaternary ammonium cation hydrophilic cross-linked polymer, then adding a second tonality monomer, a second cross-linking agent and an initiator for secondary copolymerization, and finally preparing an imprinted polymer in a hollow resin ball, porous membrane or fiber form through a precipitation, membrane forming or spinning process. The solid-phase anion and cation dual-extraction agent for copper (II) ion imprinting and counter ions thereof is suitable for high-selectivity enrichment and deep extraction separation of copper (II) ions in various water systems, and has the function and characteristic of simultaneously extracting counter anions.