37 results about "Ion-association" patented technology

According to some embodiments, a server may access a data store containing electronic records, each electronic record representing a risk association for an entity in connection with a plurality of relationships, and each electronic record may contain a set of record characteristic values. The server may automatically designate a first sub-set of the set of record characteristic values as fixed effect variables and a second sub-set as random effect variables. A data analytics mixed effect predictive model may then generate, based on the fixed and random effect variables, a future performance estimation value for the risk association of each entity in connection with its plurality of relationships. An indication associated with the future performance estimation value for the risk association of at least one entity in connection with its plurality of relationships may then be transmitted to generate an interactive user interface display.

The invention relates to a method for preparing high-transition metal content molecular sieves. In the invention, Ni-ZSM-5, Co-ZSM-5 and Cu-ZSM-5 molecular sieves the transition metal contents of which respectively reach up to 15% are successfully designed and synthetized by taking ion association formed by the interaction of the traditional template agent and the metal complex as a template agent for synthetizing the molecular sieves and directly introducing metal ions to the skeletons of the molecular sieves by the template agent. The high-transition metal content heteroatom molecular sieve material has regular crystal structure, uniform bore diameter, bigger specific surface area and pore volume as well as good thermostability and hydrothermal stability.

The invention relates to a method for preparing a high-content double-transition metal heteroatom composite molecular sieve. By using a stepwise synthesis method, a a MFI primary structure is firstly synthesized; then a M1-MFI molecular sieve is taken as part of silicon sources wherein M1 is one or two selected from the group consisting of Ni, Co, Cu, Fe, Zn, Cr and the like; M1-MFI is introduced into the hole wall of a mesoporous M2-MCM-41 molecular sieve wherein M2 is one or two selected from the group consisting of Ni, Co, Cu, Fe, Zn, Cr and the like; amorphous substances are guided to arrange in order to change defects of amorphous hole wall of the mesoporous molecular sieve, increase the wall thickness and raise heat stability and hydro-thermal stability of the mesoporous M2-MCM-41 molecular sieve. In the mean time, ion association complex formed by the interaction between a traditional template and a metal coordination compound is taken as a template of the synthesis molecular sieve, and metal ion is directly introduced into the molecular sieve skeleton through the template, successfully designing and synthesizing the double-transition metal heteroatom composite molecular sieve. The above composite molecular sieve material has well-regulated crystal structure, high metal content, two uniform mesoporous apertures, large specific surface area and pore volume, and good heat stability and hydro-thermal stability.

The invention discloses a grafted starch thickening agent copolymerization association compound and a preparation method thereof. The copolymerization association compound contains a structural unit A, a structural unit B, a structural unit C and a structural unit D, the structural unit A is acrylamide, the structural unit B is an amphoteric monomer methacryloyloxyethyl-N,N-dimethylpropanesulfonate (DMAPS), the structural unit C is an ion association body of the structural unit B and cationic polyamine, and the structural unit D is starch; and based on the total amount of the copolymerization association compound, the content of the acrylamide is 6-45wt%, the total content of the amphoteric monomer methacryloyloxyethyl-N,N-dimethylpropanesulfonate is 5-35wt%, the content of the cationic polyamine is 2-30wt%, and the content of the starch is 5-35wt%. Temperature resistance of the thickening agent prepared by the method can reach 150 DEG C, anti-NaCl concentration is saturated, and anti-CaCl2 concentration reaches 20%; and meanwhile, excellent shale inhibition performance and filtrate loss controllability are furthermore achieved.

The invention relates to a method for measuring perfluorooctane sulfonate by using dual-wavelength ratio ultraviolet spectroscopy, and belongs to the field of physical and chemical inspection research. Perfluorooctane sulfonate molecules do not have ultraviolet absorption functional groups and do not have ultraviolet absorption properties. In the method provided by the invention, the ultraviolet absorption generates electrostatic interaction with toluidine blue under acidic conditions to form an ionic associate, the ionic associate shows two characteristic peaks at 632 nm and 502 nm and performs rational absorption, the concentration of a perfluorooctane sulfonate solution has a good linear relationship with an ultraviolet dual-wavelength absorption ratio value under selected conditions, and the dual-wavelength ratio ultraviolet spectroscopy for measuring the perfluorooctane sulfonate is established accordingly. The method provided by the invention is suitable for measuring the perfluorooctane sulfonate in environmental water samples, and has the advantages of simple and convenient operation, high sensitivity, strong anti-interference ability and the like.

The invention provides an M-MCM-41 mesoporous molecular sieve with high transition metal content and high regularity and a preparation method thereof. According to the preparation method, Ni-MCM-41, Co-MCM-41 and Cu-MCM-41 molecular sieves with heteroatom content as high as 12 wt% are successfully designed and synthesized through synthesis of an ion association complex and direct introduction of transition metal ions into the skeleton of an MCM-41 molecular sieve under mild hydro-thermal synthesis conditions. The M-MCM-41 mesoporous molecular sieve provided by the invention has the advantages of a regular structure, a uniform particle size, a great specific surface area, a large pore volume and good thermal stability.

The invention discloses a starch-containing thickening agent copolymerization association compound and a preparation method thereof. The copolymerization association compound contains a structural unit A, a structural unit B, a structural unit C and a structural unit D, the structural unit A is N,N-dimethylacrylamide, the structural unit B is an amphoteric monomer methacryloyloxyethyl-N,N-dimethylpropanesulfonate (DMAPS), the structural unit C is an ion association body of the structural unit B and cationic polyamine, and the structural unit D is starch; and based on the total amount of the copolymerization association compound, the content of the N,N-dimethylacrylamide is 6-45% by weight, the total content of the amphoteric monomer methacryloyloxyethyl-N,N-dimethylpropanesulfonate is 5-35% by weight, the content of the cationic polyamine is 2-30% by weight, and the content of the starch is 5-35% by weight. Temperature resistance of the thickening agent prepared by the method can reach 150 DEG C, anti-NaCl concentration is saturated, and anti-CaCl2 concentration reaches 20%; and meanwhile, excellent shale inhibition performance and filtrate loss controllability are furthermore achieved.

The invention relates to a polymer reversed phase bonding extraction column and method for extracting gold from alkaline cyanide solution using the column. high polymers are polymer reversed phase bonding materials formed by bonding alkyl group on substrate surface as solid phase extraction column stuffing. The alkaline cyanide solution is added with quaternary ammonium anion CTMAB according to the molar ratios of quaternary ammonium cation with gold and Au as 1:1 and 3:1 to make into working solution; the working solution pH can be adjusted for 9.4-14; the working solution can be conveyed by a pump through the polymer reversed phase bonding solid phase extraction column, the gold ion association compound generated by the gold cyanogen complex anion and the quaternary ammonium anion CTMAB in the working solution can be adsorbed by the extraction column; after the adsorption reaches to the saturation state, the gold ion association compound enriched on the extraction column can be desorbed by alcohol elutriant after the adsorption reaches to the saturation state. The invention adopts the polymer reversed phase bonding material to stuff the extraction column, compared to the bonding silica gel, the applicable pH range of the stuffing is wide, under the alkaline condition, the using is stabilized, the invention is suitable for the working environment for extracting gold from the alkaline cyanide solution, the gold extraction efficiency can be improved greatly, the gold once extraction rate can be exceeded for 95%, the enriching times can be as high as 200-500 times, the gold extraction capacity is more than 16 mg / g.

The invention discloses a method for analyzing and determining perchlorate in water samples and food by utilizing a digital image of a scanner. In an acidic system with the pH value of 4.5, a methylene blue (MB) color developing agent can react with ClO4<-> to generate a hydrophobic green ion association complex; then methanol is used as a dispersing agent, dichloromethane is used as an extractingagent, and the DLLME technology is utilized to enrich the colored ion association complex into organic phase dichloromethane; then sampling the colored complex in the organic phase is performed, spotting the colored complex on ink-jet printing paper is performed, the ink-jet printing paper is scanned by a household scanner, an image is converted into a gray mode by using a GIMP and an ImgeJ, a gray area region is selected for integration to obtain the integrated optical density, and a quantitative relationship is established between the integrated optical density and the concentration of ClO4<->. The method provided by the invention uses the ink-jet printing paper as a color developing substrate to obtain the color quantitative data, the image capturing operation is very little influencedby the ambient light, and the method provided by the invention has the advantages of rapidness, accuracy and sensitivity, and is mainly used for detecting ClO4<->.

The invention relates to a method for measuring nitrite by using a reductive derivatization resonance Rayleigh scattering method, and belongs to the field of physical and chemical inspection and research. A resonance Rayleigh scattering signal of nitrite is very weak, in the method provided by the invention, the nitrite in a sample is caused to generate a redox reaction with iodide ions to generate iodine elementary substance under acidic conditions, the iodine elementary substance is further combined with excess iodide ions to generate triiodide ions, and a cationic dye is combined with thetriiodide ions to form an ionic association that can significantly enhance the RRS signal of the system, so as to generate a new characteristic RRS spectrum. Under selected conditions, the nitrite concentration has a good linear relationship with an RRS value at 471cm-1 with a range of 0.0015-1.5 mug / mL, and an RRS method for indirectly performing quantitative analysis on nitrite is established accordingly. The method provided by the invention is suitable for the measurement of nitrite in food and environmental samples, and has the advantages of simple operation, rapidity, high sensitivity, good selectivity, and so on.

The invention discloses an ion association compound solution for removing methylbenzene in indoor air online in real time and removal method. The ion association compound solution is prepared from, byvolume percentage, 4.0-7.0% of a 1.0 mol / L HCl solution, 2.0-4.0% of a 10 g / L methylene blue solution, 3.0-9.0% of a 2.0*10 mol<-2> / L KI solution, 3.0-9.0% of a 1.0*10 mol<-2> / L AgNO3 solution, 5.0-15.0% of a 5.0% benzoyl peroxide solution and the balance water. The ion association compound solution is loaded into a purification device, and methylbenzene in the indoor air can be removed online inreal time through air circulation. The ion association compound solution is mainly characterized in that the ion association compound solution is an aqueous solution which is environmentally friendly, tasteless, nontoxic and safe, only all components need to be directly mixed, and a preparation method and a use method are simple, convenient and reliable; methylbenzene in the air in a room and a vehicle can be removed quickly and continuously online in real time; the removal technology is efficient and does not cause secondary pollution, the treatment cost is low, the economic benefit is high,and the market prospect is broad.

The invention discloses a method for measuring chitosan content with a resonance Rayleigh scattering method by carmine red as a probe. Research shows that chitosan can be combined with carmine red toform an ion-association complex, resonance scattering strength is remarkably enhanced, chitosan concentration has a good linear relation with delta I in a certain concentration range, and by means ofthe linear relation as quantification basis of chitosan, the method for measuring chitosan content with the resonance Rayleigh scattering method by carmine red as the probe is established. The methodhas the advantages of being simple to operate, fast, low in cost, high in sensitivity, high in recovery rate, good in repeatability and the like and is suitable for being popularized and used in actual application.

The invention discloses a method for preventing WLAN (Wireless Local Area Network) association-breaking attack based on prime factorization verification, and belongs to the technical field of communication. The method comprises the following steps that: a STA (Station) transmits an association request frame carrying a generated large composite number; an AP (Access Point) receives the associationrequest frame; the AP transmits an association response frame carrying the generated large composite number; the STA receives the association response frame; the STA transmits a breaking authentication association frame carrying a large prime number; the AP receives the breaking authentication association frame and verifies the large prime number in the breaking authentication association frame; the AP transmits the breaking authentication association frame carrying the large prime number; and the STA receives the breaking authentication association frame and verifies the large prime number inthe breaking authentication association frame. The STA and the AP generate the large prime number and the large composite number which are required during association breaking of the other party at an association stage, and the transmission of the large composite and the large prime number is realized through a frame extension field. Frame reception is authenticated at a breaking stage, so that the STA and the AP are protected from being disconnected exceptionally due to an association-breaking authentication frame transmitted by a malicious third party. Through adoption of the method, the security, protocol compatibility and authentication success rate are improved greatly.

The invention discloses a preparation method of a thickening agent copolymerization association compound. The copolymerization association compound contains a structural unit A, a structural unit B and a structural unit C, the structural unit A is acrylamide, the structural unit B is amphoteric monomer N-methyldiallyl propanesulfonate (MAPS), and the structural unit C is an ion association body of the structural unit B and cationic polyamine; and based on the total amount of the copolymerization association compound, the content of the structural unit A is 10-75wt%, the total content of the amphoteric monomer is 8-55wt%, and the content of the cationic polyamine is 1-50wt%. Temperature resistance of the thickening agent prepared by the method can reach 200 DEG C, anti-NaCl concentration is saturated, and the anti-CaCl2 concentration reaches 20%; and meanwhile, excellent shale inhibition performance and filtrate loss controllability are furthermore achieved.

The invention discloses a high-precision urine iodine detection method which comprises the following steps: by taking N-bromosuccinimide as an oxidizing agent, oxidizing iodide ions in urine into iodate ions, introducing tetrabutylammonium iodide to react with the iodate ions, and forming an ion association compound by utilizing the electrostatic attraction effect between tetrabutylammonium cations and triiodide anions; and the ionic association compound is subjected to extraction and absorbance detection to establish a linear relationship between the iodine ion concentration and absorbance, thereby implementing high-precision detection on urine iodine. By means of the mode, the urine iodine can be safely and conveniently subjected to high-precision detection, the detection method is simple, convenient and easy to implement, high in detection speed and low in detection cost, the detection process has high sensitivity, precision and accuracy, high-precision detection of the urine iodinecan be achieved, the requirements of practical application can be met, and high application value is achieved.

An electrolytic solution for electrochemical elements which comprises an anion ingredient having one or more fluorine atoms and a cation ingredient which is imidazolium or an imidazolium derivative each having one or more hydrogen atoms, and which has at least five fluorine atom / hydrogen atom pairs in each of which the distance between the fluorine atom of the anion ingredient and the hydrogen atom of the cation ingredient is 2.7 Å or shorter. For example, the ionic association compound (I) shown below has been formed in the solution. This electrolytic imidazolium solution shows a higher withstand voltage than conventional electrolytic solutions containing 1,3,4,5-tetramethylimidazolium.

The invention relates to a method for accurately determining chitosan content by a resonance Rayleigh scattering method and belongs to the field of macromolecular substance detection. The method solves the problem that in the prior art the chitosan content of a finished product is difficult to determine and processes are complex. The method utilizes the characteristic of chitosan reacting with Allura Red under weakly acidic conditions to produce an association complex, and comprises measuring the RRS intensity IRRS of the ion association complex and the RRS intensity I0RRS of the reagent blankat the maximum RRS wavelength, calculating delta IRRS according to a formula of delta IRRS=IRRS-I0RRS, building standard curves of delta I and different molecular weight chitosan concentrations, selecting the standard curve according to the chitosan molecular weight in the sample, and calculating the chitosan content of the sample according to the delta IRRS of the detected sample. The method hasthe advantages of cheap reagents, high sensitivity and good reproducibility, and is suitable for promotion and application in practical applications.

The invention relates to a preparation method of antistatic agent onium salt fluoride, which comprises the following steps: (1) adopting tap water as a solvent and carrying out ion association reaction on perfluorobutane metal sulfonate and halogenated tetrabutyl onium salt at a temperature of 60-80 DEG C; standing and layering, and decantating an upper layer of water-containing material; obtaining a lower layer of liquid phase which is insoluble in water; (2) washing the lower layer of liquid phase by using tap water with the same volume as the lower layer of liquid phase at a temperature of 60-80 DEG C for 1-2 times; (3) adsorbing inorganic ions in the lower layer of liquid phase by using ion exchange resin; dissolving the lower layer of liquid phase by using methanol, adding strongly-acidic type styrene cation exchange resin of which the crosslinking degree is 25 percent, agitating and filtering; and then adding strongly-basic type crylic acid type anion exchange resin with strong water absorption, agitating and filtering; (4) steaming out methanol to obtain the onium salt fluoride of which foreign ions reach the standards. The preparation method has the advantages of simple process, energy conservation, emission reduction, high yield and the like.

The invention provides a method and device for analyzing n-ary association. The method comprises the following steps: creating a tuple set, wherein the tuple set comprises N tuples, each tuple comprises at least one element, and N is a positive integer greater than 1; establishing a mapping relation between a (M-1)th tuple and a Mth tuple according to the corresponding relation between elements in the (M-1)th tuple and elements in the Mth tuple, wherein M equals to 2, 3, ..., N; generating an association expression list according to the mapping relation; and analyzing association according to the association expression list. The corresponding relation of the number of the tuples, the elements of the tuples and the elements of the different tuples can be set according to an actual business scenario, the association expression list which adapts to the current business scenario is generated, an association result with use value in a database can be accurately positioned by semanteme of association expressions, and effectiveness of association analysis is improved.

The invention relates to a method for accurately measuring the content of chitosan oligosaccharide according to a resonance rayleigh scattering method, and belongs to the field of macromolecule detection. The chitosan oligosaccharide and rubylith are combined to form ionic associate under the certain condition, then the resonance scattering strength is obviously increased, and lauryl sodium sulfate serving as a sensitizer is added to improve the sensitivity. The resonance scattering strength and the chitosan oligosaccharide form a linear relation within certain concentration range, the linearrelation is taken as a quantitative basis of the chitosan oligosaccharide, and the resonance rayleigh scattering method for measuring the chitosan oligosaccharide is established. The measurement of the method is affected by the ionic concentration and the interferent, a standard product with the ionic concentration controlled to 0.05 mol / L to 0.20 mol / L is taken as a quantitative standard in the actual measurement of a sample, and the method has the advantages of cheap agents, high sensitivity, good repeatability, simplicity and convenience in operation, and the like.

The invention relates to agent for rapidly detecting the snail-killing agent of niclosamide on site, belonging to the technical field of the chemical agent preparing method. The agent for rapidly detecing the snail-killing agent of niclosamide on site comprises inorganic alkali, organic alkaline solvent, high-stability calcium and magnesium chelating agent and water. Because the anions of the niclosamide and the cations of the base-radical are combined into ion-association complex, the conjugate structure of the niclosamide molecule can be expanded, the effective light absorption area can be enlarged, the maximum light absorption peak can be subjected to the redshift, the molar light absorption coefficient can be magnified and the visible spectrophotometry and even the visual analysis of the niclosamide can be realized. The application dosage of the niclosamide can be rapidly detected on site with the direct spectrophotometry.

The invention discloses a temperature-resistant thickening agent copolymerization association compound and a preparation method thereof. The copolymerization association compound contains a structural unit A, a structural unit B and a structural unit C, the structural unit A is N,N-dimethylacrylamide, the structural unit B is an amphoteric monomer methacryloyloxyethyl-N,N-dimethylpropanesulfonate (DMAPS), and the structural unit C is an ion association body of the structural unit B and cationic polyamine; and based on the total amount of the copolymerization association compound, the content of the N,N-dimethylacrylamide is 10-75% by weight, preferably 30-65% by weight, the total content of the amphoteric monomer is 8-55% by weight, preferably 20-60% by weight, and the content of the cationic polyamine is 1-50% by weight, preferably 3-40% by weight. Temperature resistance of the thickening agent prepared by the method can reach 150 DEG C, anti-NaCl concentration is saturated, and anti-CaCl2 concentration reaches 20%; and meanwhile, excellent shale inhibition performance and filtrate loss controllability are furthermore achieved.

The invention discloses a starch-containing thickening agent copolymerization association compound and a preparation method thereof. The copolymerization association compound contains a structural unit A, a structural unit B, a structural unit C and a structural unit D, the structural unit A is N,N-dimethylacrylamide, the structural unit B is an amphoteric monomer methacryloyloxyethyl-N,N-dimethylpropanesulfonate (DMAPS), the structural unit C is an ion association body of the structural unit B and cationic polyamine, and the structural unit D is starch; and based on the total amount of the copolymerization association compound, the content of the N,N-dimethylacrylamide is 6-45% by weight, the total content of the amphoteric monomer methacryloyloxyethyl-N,N-dimethylpropanesulfonate is 5-35% by weight, the content of the cationic polyamine is 2-30% by weight, and the content of the starch is 5-35% by weight. Temperature resistance of the thickening agent prepared by the method can reach 150 DEG C, anti-NaCl concentration is saturated, and anti-CaCl2 concentration reaches 20%; and meanwhile, excellent shale inhibition performance and filtrate loss controllability are furthermore achieved.

The invention discloses a temperature-resistant thickening agent copolymerization association compound and a preparation method thereof. The copolymerization association compound contains a structural unit A, a structural unit B and a structural unit C, the structural unit A is N,N-dimethylacrylamide, the structural unit B is an amphoteric monomer methacryloyloxyethyl-N,N-dimethylpropanesulfonate (DMAPS), and the structural unit C is an ion association body of the structural unit B and cationic polyamine; and based on the total amount of the copolymerization association compound, the content of the N,N-dimethylacrylamide is 10-75% by weight, preferably 30-65% by weight, the total content of the amphoteric monomer is 8-55% by weight, preferably 20-60% by weight, and the content of the cationic polyamine is 1-50% by weight, preferably 3-40% by weight. Temperature resistance of the thickening agent prepared by the method can reach 150 DEG C, anti-NaCl concentration is saturated, and anti-CaCl2 concentration reaches 20%; and meanwhile, excellent shale inhibition performance and filtrate loss controllability are furthermore achieved.

The invention relates to a method for measuring perfluorooctane sulfonic acid by a dual-wavelength resonance Rayleigh scattering method, belonging to the field of environmental monitoring research. The resonant Rayleigh scattering signal of perfluorooctane sulfonic acid is very weak. The present invention uses toluidine blue and perfluorooctane sulfonic acid to form an ion association under certain conditions, so that the resonant Rayleigh scattering signal is significantly enhanced. , and two characteristic peaks appeared at 345nm and 506nm. Under the selected conditions, there is a good linear relationship between the concentration of PFOS solution and the resonance Rayleigh scattering intensity. Based on this, a dual-wavelength resonance Rayleigh scattering method for the quantitative analysis of PFOS was established. The invention is applicable to the detection of perfluorooctane sulfonic acid in environmental water samples, and has the advantages of simplicity, speed, high sensitivity, strong anti-interference ability and the like.

The invention relates to agent for rapidly detecting the snail-killing agent of niclosamide on site, belonging to the technical field of the chemical agent preparing method. The agent for rapidly detecing the snail-killing agent of niclosamide on site comprises inorganic alkali, organic alkaline solvent, high-stability calcium and magnesium chelating agent and water. Because the anions of the niclosamide and the cations of the base-radical are combined into ion-association complex, the conjugate structure of the niclosamide molecule can be expanded, the effective light absorption area can be enlarged, the maximum light absorption peak can be subjected to the redshift, the molar light absorption coefficient can be magnified and the visible spectrophotometry and even the visual analysis of the niclosamide can be realized. The application dosage of the niclosamide can be rapidly detected on site with the direct spectrophotometry.

The invention discloses a preparation method of a thickening agent copolymerization association compound. The copolymerization association compound contains a structural unit A, a structural unit B and a structural unit C, the structural unit A is acrylamide, the structural unit B is amphoteric monomer N-methyldiallyl propanesulfonate (MAPS), and the structural unit C is an ion association body of the structural unit B and cationic polyamine; and based on the total amount of the copolymerization association compound, the content of the structural unit A is 10-75wt%, the total content of the amphoteric monomer is 8-55wt%, and the content of the cationic polyamine is 1-50wt%. Temperature resistance of the thickening agent prepared by the method can reach 200 DEG C, anti-NaCl concentration is saturated, and the anti-CaCl2 concentration reaches 20%; and meanwhile, excellent shale inhibition performance and filtrate loss controllability are furthermore achieved.