468results about "Aluminium silicates" patented technology

Processes and apparatuses for degrading PFAS into calcium fluoride, carbon dioxide, and water. PFAS are heated and introduced to a calcium base which will degrade the PFAS. The PFAS may be in a stream that is a PFAS enriched stream formed by desorbing the PFAS from an adsorbent which removed the PFAS from a contaminant stream. The PFAS may be desorbed in the presence of the calcium base. The calcium base may be calcium hydroxide, calcium oxide, calcium carbonate, or combinations thereof.

The invention provides a polysilicate aluminum zirconium coagulant as well as a preparation method and application thereof, and relates to the technical field of solid waste recycling. The preparation method of the polysilicate aluminum zirconium coagulant comprises the following steps: S1, activation preparation of a polysilicate solution; S2, introduction and pre-complexation of a metal salt solution; and S3, alkalization induced polymerization and curing. According to the invention, the efficient charge neutralization capability of zirconium and aluminum metal ions and the long-chain network structure characteristic of polysilicic acid are organically combined through a copolymerization reaction by molecular design, the developed polysilicate aluminum zirconium coagulant can maintain a good coagulation effect in a wide pH range, is suitable for treating residual sludge with different sources and properties, and has a good coagulation effect under the dosage of 7.5%. The CST value is reduced to 35.4 s from 190.7 s, the water content of a filter cake is reduced to 77.4%, and the Zeta potential is-8.2 mV, so that the polysilicate aluminum ferric coagulant is obviously superior to a traditional polysilicate aluminum ferric coagulant, and has the advantages of high operation flexibility, good process stability and good application prospect.

The invention provides a chitosan composite material and a compound feed additive, and relates to the technical field of feed additives. The chitosan composite material comprises cross-linked chitosan and a porous carrier, the cross-linked chitosan is coated on the surface of the porous carrier; the porous carrier comprises a first porous carrier and a second porous carrier, the average particle size of the first porous carrier is 80-150 [mu] m, and the average particle size of the second porous carrier is 10-30 [mu] m. The chitosan composite material disclosed by the invention has relatively good heavy metal ion adsorption performance and can be used as a feed additive.

A hybrid catalyst for simultaneous dehalogenation and cracking of plastic derived oil includes a plurality of composite particles, wherein each of the composite particles includes red mud particles and beta zeolite particles. A process for upgrading plastic derived oil includes contacting the plastic derived oil with the hybrid catalyst. A system for upgrading plastic derived oil includes an FCC reactor containing the hybrid catalyst.

The present invention provides a modified silica aerogel powder having a higher water repellency and a larger contact angle, and a method for producing the same. At the same time, the present invention provides an aerogel slurry having a lower thermal conductivity and a method for producing the same. The present invention also provides a method for producing an aerogel insulating felt having low thermal conductivity, high mechanical strength, and capable of relatively well resolving the problem of powder shedding. The method for producing the modified silica aerogel powder includes the steps of (1) modifying halloysite nanotubes with dodecyl methacrylate and pentafluorophenyl methacrylate, (2) preparing a silica sol, (3) adding the modified halloysite nanotubes to the silica sol to prepare a wet gel, and (5) preparing the wet gel into the modified silica aerogel powder. The present application also provides a method for producing an aerogel slurry from the modified silica aerogel powder, and a method for producing an aerogel insulating felt from the aerogel slurry.

The invention discloses a waste sulfuric acid treatment method and device, the device comprises a sintered filter element filter, a fine filtration coalescer, an adsorption tank and a membrane separator which are connected in sequence, and the fine filtration coalescer adopts a ceramic membrane tube or a polytetrafluoroethylene membrane tube or a silicon carbide lining membrane tube as a filter material; an adsorption material in the adsorption tank is one or a combined adsorption material of more than two of activated carbon, a modified molecular sieve, a metal organic framework material and a nano adsorption material; and the membrane separation system adopts one or a combined membrane of more than two of an ultrafiltration membrane, a reverse osmosis membrane and an electrodialysis membrane. The alkylation waste acid regeneration process can be simplified, the occupied area of the device is saved, the engineering investment is reduced, and the operation cost is greatly reduced compared with that of an existing process technology; according to the method, a physical separation means is adopted, organic polymeric oil, dissolved organic matters, dissolved salts and other impurities in the alkylated waste sulfuric acid can be effectively removed without decomposing and reconstructing the waste sulfuric acid, and the concentrated sulfuric acid after concentration completely meets the production requirements of an alkylation device.

The present invention belongs to the technical field of catalytic materials and relates to a silicon-aluminum material, its preparation and a low-coking, high-activity heavy oil conversion catalytic cracking catalyst. The silicon-aluminum material has an anhydrous weight chemical formula of (0-1)Na2O·(15-50)Al2O3·(85-50)SiO2, a most probable pore diameter of 10-100 nm, and a specific surface area of ​​150-600 m 2 / g, a pore volume of 0.5-1.5 ml / g, and a pore volume of pores with a pore diameter greater than 10 nm accounting for 70%-98% of the total pore volume. Its preparation method comprises the steps of adding an alkaline silicon source to an acidic aluminum source, contacting with a base, and washing. The low-coking, high-activity heavy oil conversion catalytic cracking catalyst contains the aforementioned silicon-aluminum material and an in-situ crystallized Y-type molecular sieve. The catalytic cracking catalyst has good coke selectivity.

The invention relates to a fast ion conductor-stabilizer composite coated lithium manganese iron phosphate material as well as a preparation method and application thereof. The lithium manganese iron phosphate material comprises a lithium manganese iron phosphate inner core and a coating layer on the surface of the lithium manganese iron phosphate inner core, the coating layer is obtained by mixing sodium aluminosilicate, magnesium metaaluminate, a coating carbon source and a lithium supplement agent, coating the surface of the lithium manganese iron phosphate inner core with the mixture, and performing sintering treatment. According to the invention, sodium aluminosilicate and magnesium metaaluminate are combined with conductive carbon to carry out co-coating treatment on lithium manganese iron phosphate, and in a high-temperature sintering process, part of Na < + > / Al < 3 + > / Mg < 2 + > multi-ions are co-embedded into a near surface layer of a lithium manganese iron phosphate crystal, so that a unit cell structure which is more stable in structure and easier in Li < + > diffusion is formed. In the high-temperature sintering process, part of magnesium metaaluminate reacts with the lithium supplement agent to form an Al-based fast ion conductor, and sodium aluminosilicate has a wider Li < + > diffusion channel, so that the material has excellent rate capability.

The invention provides a positive electrode material and a preparation method thereof, a battery monomer, a battery device and a power utilization device. The positive electrode material comprises a sodium transition metal oxide and a silicate material located on the surface of the sodium transition metal oxide, the positive electrode material has the following chemical formula: NaxMyNzO2 / (aNa2O.nSiO2-XrOt.SiO2) b, M comprises one or more of Fe, In, Co, Mn, Ni and Cr, N comprises one or more of Cu, Li, Ti, Zr, K, Sb, Nb, Mg, Ca, Mo, Zn, W, Bi, Sr, Sn, Ga and Al, and X comprises one or more of Na, Li, K, Mg, Ca, Zn, Al, Cr, Sr, Sn and Sb; 0.58 < = x < = 1.05, 0 < y < = 1, 0 < = z < = 1, 0 < y + z < = 1, 1 / 3 < = r / t < = 2, 1 < = n / a, and 0 < b < = 0.2. The positive electrode material provided by the invention can improve the rate capability and the processability of the battery monomer.

The invention relates to the technical field of adsorbents, and provides an efficient molecular sieve adsorbent for adsorbing carbon dioxide and a preparation method of the efficient molecular sieve adsorbent aiming at the problem that a traditional Na-type 13X molecular sieve is poor in CO2 adsorption performance under low partial pressure. The adsorbent is prepared by using a template agent, aluminum hydroxide, nano aluminum oxide and silica sol as raw materials through the steps of crystallization, calcination and the like. The template agent is a functional molecule integrating a phosphonic acid group, long-chain alkyl and polyethylene glycol dicarboxylic acid, the phosphonic acid group stabilizes a skeleton, the long-chain alkyl provides a graphene-like layer to inhibit water molecule adsorption, and the polyethylene glycol dicarboxylic acid guides micropores to grow orderly and cooperate with each other to form the efficient molecular sieve adsorbent for carbon dioxide adsorption. The CO2 adsorption capacity, the dynamic adsorption rate and the moisture resistance of the adsorbent under low partial pressure are improved.

The invention discloses a magnetic geopolymer as well as a preparation method and application thereof, and relates to the technical field of solid waste resource utilization and wastewater treatment. The preparation method comprises the following steps: drying nickel slag, crushing and grinding, adding calcium oxide to adjust alkalinity, and heating and melting to obtain a nickel slag melt; the nickel slag melt is subjected to water quenching, and magnetic slag micro powder is obtained through drying, crushing and screening; and mixing the magnetic slag micro powder with an alkaline activator, injecting the mixture into a mold, performing constant-temperature maintenance, demolding, and crushing to obtain the magnetic geopolymer. The magnetic geopolymer prepared by the invention has high adsorption capacity and rapid adsorption kinetics for multiple heavy metal ions in water, and has excellent magnetic separation performance.

The invention provides a carrier material as well as a preparation method and application thereof, the preparation method of the carrier material comprises the following steps: 1) mixing a mixed solution containing a polyhydroxy compound and / or a polyamine compound, polycarboxylic acid and a metal source with a porous material to obtain a mixed system; wherein the mass of the mixed solution is 40-60% of the mass of the porous material; and 2) carrying out post-treatment including polymerization treatment, drying treatment and roasting treatment on the mixed system to obtain the carrier material. According to the preparation method of the carrier material provided by the invention, metal ions enter the pore channels of the porous material, the metal material can be uniformly distributed on the inner surfaces of the pore channels under the pore channel confinement effect, and the carrier material is applied to a catalyst, so that the temperature of a catalytic oxidation reaction of a volatile organic compound can be reduced.

Provided are spherical composite oxide particles having high crystallinity, white color, and low coefficient of thermal expansion. The composite oxide particles according to the present invention are polycrystalline, the main crystal phase contains cordierite and / or hexagonal cordierite, and the coefficient of thermal expansion of the composite oxide particles according to the TMA method is 1.5 ppm or less.

This invention relates to the field of wastewater treatment technology, specifically to a highly efficient adsorbent wastewater treatment agent and its preparation method, comprising the following raw materials in parts by weight: 50-70 parts activated carbon powder, 8-12 parts deionized water, 5-10 parts ammonium bicarbonate, 1-3 parts sodium dodecyl sulfate, 15-25 parts additive A, and 8-15 parts additive B. In this invention, the stably loaded cerium ions can effectively exert their specific coordination and capture effect on heavy metals. The chitosan introduced into the carrier can enhance the electrostatic and chelate adsorption of anionic pollutants and organic molecules. Simultaneously, the well-developed pores formed after shellac carbonization combine with the network structure of chitosan, further increasing the specific surface area of ​​the material and the adsorption capacity of organic pollutants, achieving highly efficient and stable adsorption of heavy metals, dyes, and organic pollutants.

The utility model relates to the field of zeolite activation, in particular to an activation device for preparing zeolite with a porous structure, which comprises a hollow activation kettle, a cover plate is detachably connected to the upper side of the activation kettle, a first motor is fixedly connected to the upper side of the cover plate, and a coil stock stirring component is fixedly arranged on the lower side of the output end of the first motor. The activation kettle is used for fully mixing zeolite and an acid solution, a discharging part is rotationally arranged at the bottom of the inner side of the activation kettle and used for discharging activated zeolite, and the upper side of the cover plate is fixedly communicated with an acid solution adding pipe; according to the activation device for preparing the zeolite with the porous structure, the first motor is matched with the spiral material rolling pipe and the rotating wheel for use to drive the zeolite in the activation kettle to roll upwards, so that the zeolite and an acid solution are fully mixed and activated, and the output end of the second motor is matched with the spiral material discharging pipe for use; the fully mixed zeolite can be conveniently transported to one side of the sleeve and is downwards discharged through the collecting cylinder, so that the mixed and activated zeolite can be conveniently collected by a worker.

The application discloses a kind of water purification concrete, each component and the weight fraction it includes: cementitious material 30-55 parts, aggregate 65-95 parts, composite slurry 10-20 parts, air entraining agent 0.003-0.01 parts, water reducing agent 0.4-0.8 parts, mixing water 10-15 parts;The cementitious material includes γ-dicalcium silicate, slag and steel slag;The composite slurry is the mixed solution of chitosan and nanometer titanium dioxide.The water purification concrete in the application can significantly improve the water purification efficiency, realize self-cleaning, avoid concrete pore blockage, greatly extend the water permeability and water purification capacity of water purification concrete, has important economic and environmental benefits, and is suitable for popularization and application.

The invention relates to the field of wastewater treatment, in particular to a method for treating wastewater containing phosphorus, aluminum, silicon and organic amine generated in a molecular sieve preparation process, which comprises the following steps: 1) adding a pH regulator and an optional silicon-aluminum component regulator into the wastewater to enable the pH of the wastewater to be 10-14 and the molar ratio of silicon to aluminum in the wastewater to be (1.0-1.8): 1, obtaining a first mixture containing an oil phase; 2) distilling the first mixture obtained in the step 1) to obtain a gas phase and a second mixture; 3) performing solid-liquid separation on the second mixture obtained in the step 2) to obtain a first solid phase and a third mixture; and 4) crystallizing the third mixture obtained in the step 3) to obtain a second solid phase. According to the method, harmless treatment can be conducted on the wastewater, organic amine, phosphorus, aluminum, silicon and the like in the wastewater can be efficiently recovered, and the recovery rate and the purity of the recovered product are high.

The invention discloses a coal gangue-based porous adsorption material as well as a preparation method and application thereof, and belongs to the technical field of solid waste recycling and porous functional materials. The material is prepared by taking coal gangue as a main raw material through powder forming and heat treatment. The method is characterized in that one-way pressing forming is adopted and combined with a fibrous or sheet-shaped pore forming agent with the length-diameter ratio, so that the pore forming agent is directionally arranged in the pressing process, finally, an elongated pore structure preferentially oriented in the pressing direction is formed in the material, and the fluid permeability of the material in different directions shows remarkable anisotropy. The material has high porosity, appropriate mechanical strength and excellent directional mass transfer capacity. The method is simple in process and low in cost, and high-value utilization of the coal gangue is realized. The prepared material is particularly suitable for a fixed bed or a filtering device to treat industrial wastewater, and when the main flowing direction of the wastewater is consistent with the pore orientation of the material, the bed pressure drop can be effectively reduced, and the pollutant adsorption rate and the treatment capacity can be improved.

The application provides a method for preparing aluminum-silicon aerogel from coal gangue and a product prepared by the method, and relates to the field of heat insulation. The method for preparing aluminum-silicon aerogel from coal gangue comprises the following steps: coal gangue activation, preparation of a precursor solution, sol-gel, impurity washing, high-temperature aging and post-treatment. The method for preparing aluminum-silicon aerogel from coal gangue does not need to extract silicon dioxide and aluminum oxide from the coal gangue respectively, can directly prepare aluminum-silicon-based aerogel from the coal gangue, effectively shields the introduction of impurities contained in the coal gangue in the process of preparing the aerogel, avoids the adverse effects of the impurities on the performance of the aerogel, and further improves the mechanical performance, stability and temperature resistance of the aluminum-silicon aerogel.

The disclosure relates to a modified aluminosilicate inorganic mesoporous material and a preparation method therefor. Through calcination modification of nitrate and modification of alkaline chitosan, and through the regulation of parameters such as a particle size and a specific surface area of the aluminosilicate, a concentration of a nitrate solution, a solid-to-liquid ratio of aluminosilicate particles to the nitrate solution, a calcination time, a calcination temperature, and a pH value, a mass fraction and a temperature of the chitosan solution, the modified aluminosilicate inorganic mesoporous material with a stable specific surface area ranging from 30 m2 / g to 40 m2 / g can be stably prepared. Moreover, the size of a pore channel inside the mesoporous material can be as small as sub-nanometer scale.

The present invention describes a method for preparing an amorphous silica-alumina-based material having incorporated therein, by means of precipitation, at least one acid solution and / or suspension of an aluminium source together with colloidal alumino-silicate particles having the structure of zeolite and conferring on the final material improved acidity relative to silica-alumina of the prior art, thereby providing a catalyst or a catalyst support that can be used in hydroconversion reactions.

A method for purifying a crude hydrogen feed stream utilizes an adsorbent having a N2 / Ar selectivity ranging from 2 to 4 at 30° C. and a Henry's law coefficient for argon ranging from 0.15 to 1.0 mmole / g / atma at 30° C. The composition of crude hydrogen streams from processes in which carbon dioxide is captured necessitates new criteria for adsorbent selection to improve recovery.

This invention discloses a precision treatment system and control method for farmland non-point source phosphorus pollution based on enrichment and reuse, comprising a water control unit, a purification unit, a desorption unit, and a power supply unit; the purification unit is installed inside the water control unit, and the desorption unit is connected externally to the water control unit; the water control unit is used for water flow control; the purification unit is used to purify farmland non-point source polluted water, and the purification unit includes directional phosphorus adsorption matrix filler, which is lanthanum-based coated molecular spheres and lanthanum-based coated molecular bricks; the desorption unit is used to perform desorption when the phosphorus adsorption capacity of the purification unit is saturated; the power supply unit is used to supply power to the system; thus, precision treatment of farmland non-point source phosphorus pollution based on enrichment and reuse is achieved.

The invention relates to the technical field of coal gangue treatment, in particular to a method for preparing high-purity mullite through coal gangue pretreatment-calcination coupling. The high-purity mullite is prepared by the following steps: crushing, grinding and sieving, adding soluble salt, phosphoric acid and ammonium salt in an alkaline hydrothermal reaction, roasting and removing impurities, modifying by using a composite mineralizer, coating by using silicon-aluminum sol, carrying out suspended three-stage calcination and the like. The method solves the technical problems of insufficient activation of the coal gangue, difficulty in deep removal of impurities, low purity of mullite and low resource utilization efficiency of the coal gangue in the traditional process, and realizes efficient resource conversion of the coal gangue. Through the synergistic effect of all process links, the crystal phase purity and structural compactness of mullite are effectively improved, the obtained product has good application performance, a feasible path is provided for preparation of high-value mullite from coal gangue, and the method is suitable for the related fields of high-temperature structural materials and the like.

The invention belongs to the technical field of biochemistry, and particularly relates to modified zeolite, immobilized protease and a preparation method and application thereof. Wherein the structural formula of the modified zeolite is shown in figure 1. The immobilized protease prepared based on the modified zeolite has excellent stability, especially immobilized neutral protease, and the enzyme activity is only reduced by about 6% after the immobilized neutral protease is stored for 6 months under normal storage conditions; in addition, after shaking on a shaking table for 2 hours, the enzyme activity is not obviously changed, and the enzyme activity of the lower layer is only reduced by about 2%. And the softness, the part difference, the surface cleanliness and the fluff condition of the leather prepared after being treated by the immobilized protease prepared based on the modified zeolite are superior to those of the conventional enzyme.

ELIMINATION OF IMPURITIES WITHIN AN ORGANIC PEROXIDE The present invention relates to the use of a zeolitic adsorbent material, to purify organic peroxides, and more particularly to eliminate the impurities present in these compositions of organic peroxides.

The present disclosure relates to a negative electrode material, a preparation method thereof, and a lithium ion battery. The negative electrode material includes an active material, the active material includes a framework structure and a silicon-oxygen material embedded in the framework structure, the framework structure includes a lithium silicate framework located inside the active material and a water-insoluble silicate framework located on the surface layer of the active material, the water-insoluble silicate framework and the lithium silicate framework are connected, and in the XRD pattern of the negative electrode material, the intensity of the strongest characteristic diffraction peak of the lithium silicate is I A and the intensity of the strongest characteristic diffraction peak of water-insoluble silicates is I B and I B / I A is 0.03≦I B / I A The negative electrode material and the preparation method thereof according to the present disclosure are simple to prepare, low-cost, and suitable for mass production. The prepared negative electrode material can improve processability, and has excellent electrochemical performance, cycle performance, and expansion inhibition performance, and can extend the service life of lithium-ion batteries.

Methods for synthesis of hierarchically ordered zeolites and zeolite-type materials are provided. Synthesized hierarchically ordered zeolites and zeolite-type materials formed according to the methods herein possess a high-degree of well-defined long-range mesoporous ordering. The methods include base-mediated reassembly, by dissolution of the parent material to the level of oligomeric structural building units of the parent material, and minimizing or avoiding amorphization / structural collapse. The dissolution and self-assembly is comprehensively controlled to produce hierarchically ordered zeolites and zeolite-type materials according to the methods herein.

The application discloses a novel silicate porous material and a preparation method and application thereof. The application provides a novel microporous composite silicate material with an ordered crystal structure, which is characterized by a three-dimensional crystal structure formed by mutual connection of tetrahedral structure units of silicon oxide or other metal oxides, a pore size of 0.50-0.60 nm, a specific surface area of 450-550 m 2 / g, a uniform and ordered micropore channel structure, highly ordered channel arrangement and high crystallinity. The aluminiferous silicate can efficiently catalyze methanol to olefin and shows high propylene selectivity; the titanic silicate is a good olefin liquid phase epoxidation catalyst using hydrogen peroxide as an oxidant; the silicate porous material can be prepared into microparticles through post-forming, has good sound absorption capacity and can improve the acoustic performance of a loudspeaker.