72results about "Aluminium silicates" patented technology

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.

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.

This invention discloses a resource recovery system for dredged sediment treatment based on ultrasonic extraction and flotation synergy, comprising: a pretreatment unit, a first-stage ultrasonic extraction reaction unit, a second-stage solid-phase adsorption reaction unit, a third-stage flotation separation unit, a dewatering unit, a residual water treatment unit, and a nitrogen and phosphorus recovery unit. It also discloses a resource recovery method for dredged sediment treatment based on ultrasonic extraction and flotation synergy. This invention solves the problems of low pollutant removal rate, high risk of secondary pollution of dredged soil, and limited resource recovery in traditional dredged sediment treatment. Through the synergistic effect of multiple units including "ultrasonic-liquid-solid-phase adsorption-micro-nano bubble flotation," it achieves efficient release of nitrogen and phosphorus, simultaneous removal of microplastics, rapid separation of clean sediment from polluted phases, and recovery of nitrogen and phosphorus for fertilizer production and resource recovery of clean sediment. The entire process is green and low-consumption, suitable for compact layout on water or near shore, and can simultaneously meet the requirements of sediment reduction, harmlessness, and resource recovery.

The application discloses a recyclable iron-containing aluminum layered silicate mineral material and a preparation method thereof, and belongs to the technical field of water treatment. The preparation method of the iron-containing layered silicate mineral material comprises the following steps: firstly, dissolving sodium hydrosulfite in water, then adding ferrous sulfate heptahydrate, aluminum chloride hexahydrate and sodium orthosilicate in sequence, and adjusting the pH of the solution to 7-9; then, performing hydrothermal reaction on the obtained mixed solution; finally, washing the reaction product with pure water and performing freeze-drying, so that the iron-containing aluminum layered silicate mineral material is prepared. The application retains the unique layered structure similar to the natural layered silicate mineral and the high adsorption performance, and cooperatively removes antibiotics by utilizing the redox activity, Fenton-like reaction and Al 3+ complexation of the application. The application shows high treatment efficiency, environmental friendliness and significant economic benefits, and is expected to play a significant environmental benefit in the field of water treatment.

To provide surface-coated inorganic oxide hollow particles capable of suppressing a decrease in dielectric properties. 【Solution means】Surface-coated inorganic oxide hollow particles in which the outer shell partitioning the hollow chamber is composed of an inorganic oxide containing boron oxide, silicon oxide, and an oxide of an element other than boron and silicon, where the content of boron oxide is 3% by mass or more, the content of silicon oxide is 30% by mass or more, the outer shell is represented by the following formula (1); R 1 n Si(OR 2 ) 4-n (1) (In the formula, R 1 represents a nitrogen-containing organic group, R 2 represents a methyl group or an ethyl group, and n represents 1 or 2.) and is surface-coated with a silane coupling agent represented by Surface-coated inorganic oxide hollow particles.

The present invention provides a method (600a) and apparatus for producing an alkaline mixture comprising sodium silicate, which mixture is suitable for use as an alkaline activator for alkaline activated and geopolymer cements, but which may also be used, for example, to mineralize captured carbon dioxide. The method comprises comminuting (301) an ore of a target metal into fines, wherein the ore comprises a siliceous mineral and at least one of iron and manganese as the target metal. The siliceous mineral may comprise the target metal itself and / or it may be silica and / or another silicate mineral present as gangue. The ore is dehydrated and hydroxylated compounds contained therein are dehydroxylated (302). The ore thus treated is then reacted (601) in an inert atmosphere with an amount of liquid sodium in excess of the stoichiometric amount thereof required for a redox reaction between the liquid sodium and an oxide of the target metal from the ore, to precipitate out from the liquid sodium a solid phase comprising both the target metal in elemental form and other insoluble products comprising sodium oxide. The redox reaction is conducted at a temperature of at least 320 °Celsius to induce a reaction between the sodium oxide and silica derived from the siliceous mineral to produce sodium silicate, but also below a temperature at which the liquid sodium can react with the oxide of the target metal to produce a ternary oxide thereof. At least some of the liquid sodium having sodium silicate dissolved therein is then separated (305) from the solid phase and is reacted (602) with at least one of oxygen and water to produce a mixture comprising sodium silicate and at least one of sodium oxide and sodium hydroxide. The corresponding apparatus comprises a comminution device (such as a rock crusher or grinder), means for dehydrating and dehydroxylating the ore (such as a dryer), a gas-tight first reaction vessel for reacting the ore thus treated with the liquid sodium, a solid-liquid sodium phase separator, and a second reaction vessel for reacting the liquid sodium having sodium silicate dissolved therein with at least one of oxygen and water. The resulting alkaline mixture is therefore produced whilst extracting the target metal in elemental form from its ore. Thus the energy consumed is split between the production of these two co-products, making the method of the invention a low-energy method of producing an alkaline activator for alkaline activated and geopolymer cements. Both reactions (601, 602) are also significantly exothermic and at least some of the thermal energy from them may be recycled. The invention does not consume any carbon and is therefore at least carbon-neutral. On the other hand, it consumes the silica content of gangue mineral species and / or of siliceous minerals of the target metal in its ore, which have previously been treated as waste products. The amount of waste material produced when extracting the target metal from its ore is thereby reduced as well.

The present application relates to the technical field of industrial solid waste utilization, and discloses a synthesis method of smelting fly ash-based mesoporous material, which uses smelting fly ash as a main raw material, uniformly mixes sodium carbonate and smelting fly ash at a specific ratio, and calcines at a suitable temperature, so as to destroy the difficult-to-dissolve glass phase and mullite phase in the smelting fly ash, make the smelting fly ash form a low-carbon cerchi stone phase which is easy to react with acid, and react with low-concentration hydrochloric acid, so as to prepare a mesoporous material with large specific surface area and pore volume and concentrated pore size distribution. The specific surface area of the best sample in the present application is 567.45 m2 / g, the pore volume is 0.95 cm3 / g, the most probable pore diameter is 18.30 nm, the Si / Al ratio is 3.65, and the yield is 44.59%. The preparation process of the method is simple, does not need to use expensive template agents, has high implementability and production safety in actual production, and realizes high-value utilization of smelting fly ash.

The application discloses a two-stage lithium-aluminum silicate transformation roasting system and method, and overcomes the shortcomings of low heat resistance and high cost of a whole electromagnetic induction heating cylinder by adopting a lithium-aluminum silicate transformation roasting system of a first-stage electromagnetic induction heating plus a second-stage sulfur oxidation self-heating, and has the advantages of long service life and low investment cost. In addition, the lithium-aluminum silicate transformation roasting is carried out in a clean way of electricity plus sulfur reaction heat, and is environment-friendly and low-carbon. The application is suitable for regions rich in electricity but lacking in fuels such as coal and natural gas and weak in logistics foundation.

The application provides a gas emission reduction functional agent for composting and a preparation method and application thereof, relates to the technical field of organic solid waste resource processing, and comprises pyrolysis treatment of biomass raw materials to form microporous biochar, wherein the pyrolysis treatment adopts limited oxygen pyrolysis conditions, the microporous biochar and the porous inorganic carrier form a multi-stage pore channel skeleton system, and the biomass raw materials include bamboo chips, rice husks and wood chips. The gas emission reduction functional agent for composting and the preparation method thereof are characterized in that the zeolite and bentonite are pretreated to form a porous inorganic carrier, the microporous biochar is combined with the carrier, the functional factor grading release particles are formed by compounding and coating treatment, and finally the composite integration treatment is performed, so that the gas emission reduction functional agent with a multi-stage pore channel skeleton system and a synergistic effect is successfully prepared, the efficiency of gas emission reduction in the composting process is improved, the components are ensured to be released as needed, and the emission reduction effect of the functional agent is enhanced.

The application provides an ionic thermoelectric film, a preparation method thereof and an ionic thermoelectric power generation device, and belongs to the technical field of thermoelectric materials. The material of the ionic thermoelectric film is graphene oxide nanosheet or vermiculite nanosheet. The height of the ion transmission channel of the ionic thermoelectric film is sub-nanometer, so that the ionic thermoelectric film has nanometer ionic capillary condensation effect, and the thermoelectric potential and output power density of the ionic thermoelectric power generation film can be greatly improved.

Product for use in energy generation, consisting of a mixture of at least hydrated aluminum silicate.

The present application relates to the technical field of environmental analysis and detection, and particularly relates to a zeolite-AMP composite membrane, a preparation method and application thereof, a DGT device and a testing method for ammonia nitrogen and nitrate nitrogen in water bodies / sediments. The zeolite-AMP composite membrane formed by using zeolite and AMP as adsorbents can simultaneously determine ammonia nitrogen and nitrate nitrogen. Compared with the existing mixed adsorption membrane for simultaneously determining ammonia nitrogen and nitrate nitrogen, the zeolite-AMP composite membrane has higher adsorption capacity, better accuracy, lower detection limit and stronger anti-ion interference ability. The installed DGT device can accurately perform in-situ synchronous testing of ammonia nitrogen and nitrate nitrogen in water bodies / sediments.

The present disclosure relates to build-up films comprising pure silica zeolite materials, methods of preparing pure silica zeolites and electronic devices comprising the build-up films.

This paper describes a product for use in energy generation and the corresponding manufacturing process. The product primarily involves enclosing a water molecule in a lattice structure with nanocavities to provide quantum mechanical effects, and is positioned between two conductive metal layers. The product positioned between the conductive materials is a mixture of at least hydrated aluminum silicate.

The present invention provides a method (100a) and system for controlling the operation of a chemical plant arranged to carry out a chemical process which produces iron and / or manganese in elemental form from respective oxides thereof using liquid sodium as a reductant of the respective oxides and which can also produce an oxide or hydroxide of at least one of calcium, magnesium and iron from a carbonate mineral of at least one of calcium, magnesium and iron. The method (100a) comprises assigning (103a) a respective value to the no. of mol of each one of the chemical species involved in the chemical process as starting materials and products thereof, subject to constraints which are derived from the law of conservation of mass of the constituent elements of those chemical species. The method also assigns (103b) respective values to the nos. of mol of chemical species which are consumed during the chemical process by electrolytic or thermochemical decomposition into their constituent elements, subject to another set of constraints which are derived from the minimum requirements for these constituent elements by the chemical process itself. The former set of constrains allows the materials balance of the process to be controlled and the latter set of constraints allows the energy balance of the process to be controlled. The method then comprises operating (104) the chemical plant to carry out the process according to the values thus assigned. Respective values may be assigned (103a, 103b) to the nos. of mol of a preferred subset of the chemical species involved in the process as starting materials and products thereof and / or a preferred subset of the chemical species which are consumed during the process by electrolytic or thermochemical decomposition into their constituent elements, before values are then assigned to remaining ones of the nos. of mol of other chemical species not in the preferred subset. This allows the chemical plant to be operated in such a way as to optimise its performance relative to such variables as the respective nett amounts of a preferred one or more of the materials it consumes and / or produces, the energy efficiency of a part or the whole of the chemical process and / or its cost effectiveness, for example. Amongst other things, the constraints also ensure that the chemical process always produces less carbon dioxide than instead calcining a carbonate mineral of at least one of calcium, magnesium and iron to produce its corresponding oxide, and that in a large number of cases, it can produce no carbon dioxide at all. Also disclosed is a graphical technique which may be used to assign the respective values to the nos. of mol of the chemical species involved in the chemical process subject to the stated constraints, whereby the method and system of the invention may be implemented.

This invention discloses a method for preparing magnetic iron-cobalt-nickel layered trimetallic hydroxide modified feldspar adsorbent material and its application in water treatment, belonging to the field of environmental engineering technology. This invention uses a hydrothermal synthesis method to obtain magnetic iron-cobalt-nickel layered trimetallic hydroxide modified feldspar adsorbent material [Ni 0.33 Co 0.33 Fe 0.33 [(OH)2](CO3) 0.17 ·mH2O / CaAl2Si2O8 (m=0.5~4.0), specific surface area is 45-60 m² 2 / g, the total pore volume is 0.136–0.141 cm³. 2 / g. Modification can improve the pore structure of feldspar, significantly increasing its specific surface area and thus enhancing its adsorption capacity for recalcitrant organic pollutants. The resulting magnetic iron-cobalt-nickel layered trimetallic hydroxide modified feldspar adsorbent material is saturated with organic pollutants. This adsorbent material is simple to prepare, exhibits high adsorption efficiency, stability, is environmentally friendly, and is safe and non-toxic to humans. It can be used to adsorb organic pollutants in water and has promising application prospects.

The invention relates to a particulate mixture intended to be used as an annealing agent; - consisting of sintered ceramic particles having a porosity greater than 20%; - having a chemical composition such that, in weight percentages on the basis of the oxides: Al2O3 + SiO2 > 70%, with SiO2 < 70% oxides other than SiO2 and Al2O3: making up the remainder to 100%; and - having a particle size distribution such that D90 < 5 millimeters and D10 > 0.5 millimeters, wherein D10 and D90 reprsent the particle sizes corresponding to the percentages that are equal to 10% and 90% by volume, respectively, on the particle size distribution curve of the particulate mixture, the particle sizes being classified in ascending order.

A method and system for purifying methyl fluoride (MeF) by removing dimethyl ether (Me2O) using a lithium salt sorbent, such as LiFSI or LiTFSI, are disclosed. Contaminated MeF is contacted with the sorbent, which preferentially adsorbs Me2O due to strong Lewis acid-base interactions, yielding purified MeF. The process may involve flowing through a sorbent bed, cryogenic collection, temperature differentials, or pumping, with optional multiple cycles for enhanced purity. This approach provides superior efficiency and purity compared to conventional methods, with experimental reductions up to 80% in Me2O content. Alternative salts and porous supports are also provided.

The application relates to the field of VOCs treatment, and discloses a VOCs adsorption molecular sieve, a preparation method and application thereof. The method comprises the following steps: 1) sequentially performing first ion exchange, calcination and second ion exchange on NaY molecular sieve to obtain NH4NaY molecular sieve; 2) performing hot-pressing treatment on the NH4NaY molecular sieve and water under the condition that the pressure is 0.1-0.7 MPa to obtain hot-pressing treated molecular sieve; and 3) performing acid treatment on the hot-pressing treated molecular sieve and acid. In step 1), the first ion exchange and the second ion exchange are performed under the condition that the pressure is 0.2-1.5 MPa. The method only needs to perform two ammonium ion exchanges and once calcination under the pressurized condition to prepare the NH4NaY molecular sieve with extremely high exchange degree, and further prepare the VOCs adsorption molecular sieve with excellent adsorption performance without long-time and multiple water vapor treatment at high temperature.

Provided is a method for purifying a lithium sulfate solution, comprising the steps of: leaching a lithium-containing ore with sulfuric acid to obtain a lithium sulfate solution mixed with a leach residue; adding an alkaline supplementary material to the lithium sulfate solution mixed with the leach residue to form a magnesium precipitate; and removing the magnesium precipitate and the leach residue by solid-liquid separation, wherein the step of forming the magnesium precipitate is performed at a pH higher than the isoelectric point of the magnesium precipitate and lower than the isoelectric point of the leach residue.

The present disclosure provides a high-efficiency clay suspension calcination system capable of controlling color of product, relates to the technical field of clay calcination. The present disclosure adopts the concept of controlling the combustion atmosphere by splitting air, and the excess air coefficient of the main combustion chamber is controlled to be less than 1, enabling calcination in a reducing atmosphere and controlling the color of clay product. At the same time, the air is divided to a carbon monoxide elimination chamber, so that the excess air coefficient therein is more than 1.15, so as to eliminating unburnt carbon monoxide, and to reduce fuel consumption. The calcined clay first enters a first-stage heat exchanger to reduce the temperature of calcined clay to below 300°C through indirect heat exchange. The heat transfer oil heated after the first-stage heat exchanger passes through a second-stage heat exchanger and a third-stage heat exchanger for heat recovery. The second-stage heat exchanger raises the temperature of the air entering the main combustion chamber and the carbon monoxide elimination chamber, which improves the fuel combustion efficiency.

The present invention provides an optimized method for recovering high-purity lithium sulfate from a lithium-containing composite oxide deposited on an eroded surface of a waste sagger discarded. Therefore, when the method for producing high-purity lithium sulfate from a waste sagger of the present invention is used, it is expected not only to be able to produce high-purity lithium sulfate that can be used for manufacturing lithium secondary batteries by recycling a discarded waste sagger, but also to be able to recycle a positive electrode active material, iron oxide, alumina, silicate, and calcium carbonate obtained as by-products during the production process of the lithium sulfate.

This invention discloses a molecular sieve composition, its preparation method, and its applications. The molecular sieve composition of this invention, by weight, comprises the following components: a) 10–80 parts of micron-nano dual-scale FAU molecular sieve; b) 10–80 parts of binder; c) 0–10 parts of modifier; wherein the modifier is selected from at least one of Group IIB, Group VIB, and Group VIII metal oxides; the total pore volume of the micron-nano dual-scale FAU molecular sieve is 0.80–1.20 cm³. 3 / g. The molecular sieve composition of the present invention uses micron-nano FAU molecular sieves as the main active component, and mixes them with binders and optional modifiers to form a composition. It is used in the industrial production of removing sulfur-containing compounds from olefin raw materials through adsorption purification, and has a high adsorption capacity and significantly reduced adsorption exothermics.

The present application relates to a kind of renewable hydrogen sulfide removing agent and its preparation method and application, the renewable hydrogen sulfide removing agent with silica alumina gel as carrier, by loading aluminium hydroxide colloidal solution to silica alumina gel carrier, continue water vapor aging makes aluminium gel and carrier secondary combination, thereby obtains the hydrogen sulfide removing agent with more concentrated pore size distribution, active adsorption site is more abundant.The removing agent is suitable for the removal of hydrogen sulfide in hydrocarbon organic medium, the use condition range is that hydrogen sulfide concentration is less than 1000ppm, removal precision is less than 0.1ppm.When saturated with hydrogen sulfide, the scavenger can be regenerated under the purge of oxygen-free atmosphere, restore removal capacity, regeneration temperature is 250~300 ℃.Compared with prior art, the hydrogen sulfide removing agent prepared in the present application has more prominent hydrogen sulfide removal capacity, adsorption capacity is increased by 3-5 times, and regeneration cycle is prolonged by 2-5 times.

Organic chlorides are removed from bio-oils, including vegetable oils and animal fats, that are to be coprocessed to meet sustainability goals. The organic chlorides are removed by using active materials such as silica-alumina containing adsorbents. The bio-oils that are targeted for treatment contain greater than 5 ppmw chlorides and are planned for more than 10% of the feedstream that is being processed.

The present invention provides an apparatus and method for separating undissolved contaminants, for example in the form of suspended or entrained particulates, from liquid metal, such as liquid sodium and liquid sodium- potassium alloy (NaK). The apparatus comprises a manifold (2) for dividing the liquid metal containing undissolved contaminants into a plurality of streams, each of which is fed to one of a plurality of traps (10, 20) connected to the manifold (2) in parallel with each other. Each trap (10, 20) contains a substrate (14, 24) for trapping the undissolved contaminant thereon, and also has a liquid metal flow meter (31, 32) associated with the trap, to indicate when the respective trap is approaching plugging by contaminant. The method of the invention ensures that the traps (10, 20) approach plugging at different times, so that one of the traps may be emptied of contaminant whilst another of the traps continues to remove undissolved contaminant from the liquid metal. Each trap comprises a plurality of valves (V1, V2, V3; V4, V5, V6), whereby filling and emptying of the respective trap with liquid metal may be controlled, and a door (15, 25), whereby a substrate (14, 24) bearing trapped contaminant may be removed from within the trap into an inert atmosphere (17, 27) and replaced by an empty trap. Filling and emptying each trap with liquid metal may be aided by pumping inert gas into the respective trap by means of a pump (41, 42). The invention is particularly suited to treating a liquid metal, such as liquid sodium, which has been used as a chemical reducing agent, and which therefore contains high levels of insoluble reaction products, such as particles of reduced metal and / or metal oxides, suspended or entrained in the liquid metal as contaminants.

Device for use in energy generation, comprising a product with a lattice structure for providing nanotubes in which molecules with quantum critical properties are enclosed, wherein the product is positioned between a first conductive material and a second conductive material.

A modified zeolite material used for removing metal impurities from an organic solvent composition; the modified zeolite material comprising (i) a hydrogen-based zeolite having hydrogen functionalities, (ii) an ammonium-based zeolite having ammonium functionalities, or (iii) a combination of a hydrogen-based zeolite having hydrogen functionalities and an ammonium-based zeolite having ammonium functionalities; the zeolite material containing a pore size of from 3Å to 20Å; and the zeolite material selectively removing metal impurities present in the solvent, to an impurity content of less than 1 ppb; a process for preparing the above modified zeolite material; and a process for removing contaminants from organic solvents using the above modified zeolite material.