15 results about "Chabazite" patented technology

The application discloses a preparation method of a multi-channel chabazite zeolite molecular sieve membrane, and high-performance chabazite zeolite molecular sieve membranes are prepared on a multi-channel carrier. The method comprises the following steps: (1) preparation of seed crystals; (2) coating of a seed crystal layer on the multi-channel carrier; and (3) synthesis of the chabazite zeolite molecular sieve membrane by using a secondary growth method. Owing to the multi-channel structure and specific pore characteristics, the multi-channel chabazite zeolite molecular sieve membrane prepared by the application has high selectivity and can accurately separate molecules with different sizes and properties. Meanwhile, the rich transmission paths enable the multi-channel chabazite zeolite molecular sieve membrane to have high flux, greatly improve the permeation rate of substances, and significantly enhance the processing capacity compared with a single-channel molecular sieve membrane.

The present disclosure provides a soil composition including zeolites, mineral components, activating components, and additives, wherein zeolites may include phillipsite, chabazite, and faujasite. Furthermore, mineral components may include brown tuff, coarse tuff, olivine, clay, and pyroxene, while the activating components may include calcite, smectite, volcanic glass, and feldspar. On the other hand, beneficial additives and fertilizers related additives are included in the composition of the present disclosure to improve soil health and nutrient availability. The soil composition is configured to improve plant growth and optimizing soil health for sustainable agricultural and horticultural applications. The present disclosure also provides a method for preparing the soil composition.

The invention provides an intrinsic microporous polyimide containing a Troger base structure and a preparation method and application thereof, and the intrinsic microporous polyimide containing the Troger base structure has a structure as shown in a formula I. The molecular structure of the intrinsic microporous polyimide has an aromatic ring structure and a rigid twisted Troger base structure; the polyimide aerogel material obtained by performing a supercritical drying experiment on an intrinsic microporous polyimide film containing a Troger base structure has a thermal conductivity value much lower than that of a commercial film, and has excellent flame retardance and better sound absorption performance; the material can be used as a standing fire extinguishing material or a thermal insulation material to protect equipment from being damaged at high temperature in electronic components, airplanes and spacecrafts.

The application discloses a kind of porous chabazite electronic and preparation method thereof, catalyst, the porous chabazite electronic exists in the form of Na6M2 [Al6Si6O 24 ](e ‑ )2, wherein electron is as one kind of anion of the porous chabazite electronic, M is alkali metal or alkaline earth metal.Method includes: providing the porous Na6 [Al6Si6O 24 ]·8H2O;In vacuum environment, the first calcination treatment is carried out to the porous Na6 [Al6Si6O 24 ]·8H2O, obtains Na6 [Al6Si6O 24 ];Alkali metal or alkaline earth metal M is deposited on the Na6 [Al6Si6O 24 ], obtains the porous chabazite electronic.The chabazite electronic provided by the application is porous structure, fills the blank of electronic in the prior art without porous structure.Because of having porous structure, can be used as the carrier of supported catalyst, suitable for a variety of catalytic hydrogenation reaction, electron anion in carrier has great promoting effect to reaction performance.Preparation method is simple, suitable for large-scale production, suitable for most loading methods to carry out catalyst loading, suitable for a variety of catalytic hydrogenation reaction.

The application discloses a disc type friction plate capable of quickly repairing a pair of friction surfaces and a preparation method thereof, and relates to the technical field of brake friction. The technical points of the application are as follows: the friction plate is prepared from the following components: phenolic resin 10-13% by mass, synthetic graphite 5-8% by mass, graphite coke 5-8% by mass, steel fiber 15-20% by mass, barium sulfate 15-20% by mass, chabazite 5-8% by mass, vermiculite 5-8% by mass, aramid fiber 2-4% by mass, iron oxide black 3-5% by mass, and elastic particles 10-15% by mass. The phenolic resin, barium sulfate and iron oxide black are 200 mesh, the synthetic graphite, graphite coke and vermiculite are 80 mesh, and the chabazite is 100 mesh. When the friction plate is used to repair a brake disc, a part of polytetrafluoroethylene binder is separated out from the friction plate, and the polytetrafluoroethylene, phenolic resin and friction generated abrasive dust are adhered to the pair of friction surfaces, so that the direct friction between the metal-based friction material and the brake disc is blocked, and the generation of friction welding is avoided.

The invention relates to the technical field of medical dressings, in particular to a rapid pain relieving band-aid containing nano hemostatic particles and a preparation method of the rapid pain relieving band-aid containing the nano hemostatic particles, the core of the rapid pain relieving band-aid containing the nano hemostatic particles is a chitosan / polyvinyl alcohol composite nanofiber water absorption cushion layer, and the cushion layer is loaded with the nano hemostatic composite particles and lidocaine liposome microcapsules. The hemostatic particles are composed of chitosan, Ca-Chabazite zeolite and the like, rapid and efficient hemostasis is achieved through triple action fixation, the lidocaine liposome microcapsule provides a lasting analgesic effect, the design integrates rapid hemostasis, long-acting analgesic and excellent biocompatibility, the clinical application value of the band-aid is remarkably improved, and through the nanocrystallization technology and collaborative design, the band-aid has a good application prospect. And the dual functions of stopping bleeding and relieving pain are achieved.

The invention discloses a chabazite molecular sieve-based composite super absorbent resin and a preparation method thereof. The preparation method comprises the following preparation steps: S1, preparing a Na-type chabazite molecular sieve; s2, carrying out ammonium exchange treatment on the Na-type chabazite molecular sieve, filtering, washing, drying and roasting to obtain an H-type chabazite molecular sieve; s3, uniformly mixing the H-type chabazite molecular sieve, acrylic acid, an initiator, a cross-linking agent and a dispersing agent in deionized water, pouring the mixture into a high-pressure reaction kettle, and carrying out polymerization reaction under the protection of N2; and S4, pouring out the oil-phase medium, separating out a reaction product, sequentially leaching and dehydrating the product by using deionized water, absolute methanol and absolute ethyl alcohol, and drying the obtained solid to constant weight, thereby obtaining the composite super absorbent resin product based on the chabazite molecular sieve. According to the prepared composite super absorbent resin material based on the chabazite molecular sieve, the water absorption rate is larger than or equal to 56 g / g, the 0.3 psi pressurized absorption amount is larger than or equal to 25 g / g, the gel strength is 3000 N / kg-3900 N / kg, and the ammonia removal rate is larger than or equal to 74%.

The application provides a preparation method of trimethylolpropane polyoxyethylene ether, comprising the following steps: carrying out a polymerization reaction on trimethylolpropane, SSZ-13 molecular sieve and ethylene oxide to obtain the trimethylolpropane polyoxyethylene ether. The application adopts SSZ-13 molecular sieve catalyst as a catalyst, the SSZ-13 molecular sieve has a chabazite (CHA) structure, AlO4 and SiO4 tetrahedrons are connected head to tail through oxygen atoms, and are orderly arranged into ellipsoid cages with an eight-membered ring structure and a three-dimensional cross channel structure, the SSZ-13 molecular sieve has good hydrothermal stability, more surface proton acid centers and exchangeable cations, has excellent catalytic characteristics, the prepared trimethylolpropane polyoxyethylene ether has less than 1000 ppm of trimethylolpropane raw material residues, and color (Pt-Co) is less than or equal to 20.

The invention discloses a molecular sieve for adsorbing and separating ethylene and ethane as well as a preparation method and a use method thereof, and belongs to the field of gas adsorption and separation, the molecular sieve is an eight-membered ring structure molecular sieve K-Chabazite or Ag-Chabazite with a CHA configuration, the K-Chabazite molecular sieve is obtained by performing ion exchange on a NaY molecular sieve and an NH4NO3 solution, calcining, mixing with a KOH solution, crystallizing, drying and calcining, and the Ag-Chabazite molecular sieve is obtained by performing ion exchange on the NaY molecular sieve and the NH4NO3 solution. The Ag-Chabazite molecular sieve is obtained by performing ion exchange on silver salt AgNO3 and a K-Chabazite molecular sieve and then calcining, the molecular sieve is subjected to degassing treatment and then is subjected to ethylene and ethane separation in an adsorption tower, the molecular sieve is a molecular sieve with an eight-membered ring structure and a CHA configuration, the molecular sieve can effectively improve the separation and adsorption selectivity of C2H4 / C2H6 and the adsorption capacity of C2H4, and the molecular sieve can be applied to the field of purification of ethylene and ethane. And the synthesis method is simple, the production cost is lower, and the industrial application prospect is stronger.

The present invention relates to a biostimulant product containing Iceland spar, having properties as a natural accelerator of biological processes for plants, water, soils and waste. The product contains Iceland spar between 80% and 95%, ground into particles with a particle size of 1 to 125 microns. This product further contains adjuvant minerals in a proportion between 5%-20%, ground into particles with a particle size of 1 to 125 microns, from among the following: Quartz [SiO2]; Clinoptilolite; [(Ca,K2,Na2)3(Si30AI6)O72-20H2O]; Phillipsite [(Na,K,Ca)1- 2(Si,AI)8O16• 6H2O]; Cristobalite [SiO2]; Clinochlore [(Mg,Fe)5Al(AISi3O10)(OH)8]; Chabazite [(Ca,K2,Na2)2[AI2Si4O12]2 • 12H2O]. Due to the foregoing, the present invention enhances photosynthesis in plants and the development of autochthonous bacterial colonies, which can be applied in the treatment of slurries, deseutrophication and decontamination of fresh and salt water, waste and heavy metal reduction, acceleration of organic composting, soil decontamination due to mining and / or chemical leachates, and the technical improvement of animal fodder and feed.

Synthesis of crystalline CHA Zeolite powder and highly oriented defect-free CHA Zeolite membrane is described herein by the secondary growth of small pore silicoaluminophosphate powder having chabazite (CHA) type framework crystals from economic raw material Zeolite films are formed through the gradual growth and integration of individual zeolite seed crystals within a designated seed layer and through the secondary growth method by synthesizing the membrane of the zeolites using a hydrothermal process. Thereby generating defect-free membranes with improved permeance by utilizing the smaller seed crystals typically ranging from 2 to 5 μm. Ultrasound has been used to accelerate the crystallization process by enhancing mass transfer, promoting uniform nucleation, and facilitating the dispersion of precursor materials as well as to improve productivity in terms of enhanced adherence of seed crystals to support surfaces, leading to crystal quality and morphology that leads to faster synthesis times, as evidenced by the rapid generation of seed crystals.

The invention belongs to the technical field of gas separation, and particularly relates to an adsorbent for removing neon in helium and a preparation method and application thereof.The preparation method comprises the steps that an aluminum source, sodium hydroxide and water are mixed and then stirred, then a template agent and a silicon source are added, stirring is conducted, and hydrogel is obtained; carrying out crystallization treatment on the hydrogel, and carrying out filtering, washing and drying treatment to obtain chabazite; the silica-alumina ratio of the chabazite is 3-5; the method comprises the following steps: carrying out ion exchange on chabazite and a metal salt solution, filtering, washing and drying to obtain the adsorbent. The adsorbent provided by the invention has a regular microporous structure and a strong electric field adsorption site, shows high selectivity and adsorption capacity for neon gas, and can realize removal of trace neon from helium gas.

This document discloses methods for forming chabazite zeolites with a mordenite intermediate phase, leading to zeolites with increased hydrothermal stability, methods for their production, zeolites with increased hydrothermal stability, catalytic articles containing zeolites with increased hydrothermal stability, and methods for reducing nitrogen oxides (NOx) using the same.

The present disclosure generally provides zeolites having a CHA crystalline framework and methods for preparing the same. CHA-type zeolites containing intergrowths, controlled framework aluminum distribution, or both are provided herein. Further provided are CHA-type zeolites, wherein the crystals of the zeolitic material have a predominantly flake-like morphology as determined by scanning electron microscopy (SEM). Additionally provided are catalytic compositions, catalytic articles, and catalytic systems comprising metal-promoted CHA-type zeolites.

A method for preparing titanide zeolites, such as titanide chamazoite-type (CHA) zeolites or titanide AEI zeolites. The method includes (i) forming a reactive gel comprising a precursor zeolite, a structure-directing agent (SDA), NaOH and / or KOH, and a SiO2 source; and (ii) heating the reactive gel. The precursor zeolite comprises a titanium-loaded precursor zeolite, and heating the reactive gel comprises heating to a temperature suitable for converting the titanium-loaded precursor zeolite into titanide zeolite and maintaining this temperature for a suitable duration. The titanium-loaded precursor zeolite can be prepared from organotitanium compounds, such as titanium alkoxides.