Abstract: Disclosed herein are a catalyst for hydrocracking reaction of high molecular weight components in bio-oil, a method for preparing the same and a method for bio-oil upgrading using the same. The catalyst includes a zeolite carrier; and at least one metal selected from the group consisting of nickel (Ni), ruthenium (Ru) and cerium (Ce) supported on the carrier. The catalyst promotes the hydrocracking of high molecular weight compounds contained in the bio-oil, but also inhibits the polymerization reaction of the decomposed product, thereby more effectively enhancing the hydrocracking reaction of the bio-oil.

Abstract: A two-stage treatment process for destroying per- and polyfluoroalkyl substances (PFAS) in an aqueous stream. The two-stage treatment process uses a combination of multifunctional crystalline molecular sieves, such as zeolites and zeotypes, to separate PFAS from the aqueous stream, catalytically decompose and defluorinate any PFAS molecules, and generate non-toxic waste products that are safe for disposal. The first stage includes adsorption of the PFAS within one of a pair of vessels containing porous, hydrophobic, hydrothermally stable molecular sieves, dehydration of the captured PFAS on the sieves, and catalytic ozonation of the captured PFAS molecules on the dried sieves. The second stage involves catalytic decomposition and neutralization of the ozonation results with one of a pair of vessels including a zeolite-supported CaO catalyst, catalytic oxidation of any toxic CO generated by the decomposition, and an acid wash for regeneration of the spent catalyst.

Abstract: A method for synthesizing a supported molecular sieve membrane by microwaves includes the steps of aging, heating and synthesizing. The aging step is to make a support in contact with a synthetic liquid at 25° C. to 70° C. for 10 hours to 24 hours; the heating step is to raise a temperature of an aged system from an aging temperature to a synthesis temperature within 1 minute to 10 minutes; and the synthesizing step is to synthesize at 80° C. to 120° C. for 2 minutes to 15 minutes. The steps of heating and synthesizing are powered by microwaves.

Abstract: The methods for synthesizing mordenite (MOR) zeolite crystals described herein utilize a combination of organics and produce MOR crystals with reduced size, higher Si/Al ratio, fewer stacking faults, less occluded organics in the final product, and a longer catalyst lifetime.

Abstract: Disclosed herein are modified zeolites and methods for making modified zeolites. In one or more embodiments disclosed herein, a modified zeolite may include a microporous framework including a plurality of micropores having diameters of less than or equal to 2 nm. The microporous framework may include at least silicon atoms and oxygen atoms. The modified zeolite may further include organometallic moieties each bonded to a nitrogen atom of a secondary amine functional group including a nitrogen atom and a hydrogen atom. The organometallic moieties may include a titanium atom that is bonded to the nitrogen atom of the secondary amine functional group. The nitrogen atom of the secondary amine function group may bridge the titanium atom of the organometallic moiety and a silicon atom of the microporous framework.

Abstract: Methods are provided for using a molecular sieve catalyst for dewaxing formed using a synthesis mixture comprising a morphology modifier. The catalyst may be used, for example, for production of a lubricant base stock. For example, ZSM-48 crystals formed using the morphology modifier (and/or formulated catalysts made using such crystals) can have an increased activity and/or can provide an improved yield during catalytic dewaxing of lubricant base stocks.

Abstract: Molecular sieves comprising intergrowths of cha and aft having an “sfw-GME tail”, at least one structure directing agent (SDA) within the framework of the molecular sieve, an intergrowth of CHA and GME framework structures, cha cavities, and aft cavities are described. A first SDA comprising either an N,N-dimethyl-3,5-dimethylpiperidinium cation or a N,N-diethyl-2,6-dimethylpiperidinium cation is required. A second SDA, which can further be present, is a CHA or an SFW generating cation. The amount of the second SDA-2 used can change the proportion of the components in the cha-aft-“sfw-GME tail”. Activated molecular sieves formed from SDA containing molecular sieves are also described. Compositions for preparing these molecular sieves are described. Methods of preparing a SDA containing JMZ-11, an activated JMZ-11, and metal containing activated JMZ-11 are described.

Abstract: Described are methods of removing phosphorous from aqueous solutions using copper-substituted aluminosilicate materials. The copper-substituted aluminosilicate materials are copper-substituted zeolites that are recyclable and have desirable recovery efficiencies. Also described are methods of making copper-substituted aluminosilicate materials, using copper-substituted aluminosilicate materials, systems using copper-substituted aluminosilicate materials, and methods of using these systems.

Abstract: Provided are a novel form of AFX zeolite, a novel synthesis technique for producing pure phase small pore zeolites, a novel synthesis method for producing a zeolite with an increased Al pair content, a catalyst comprising the AFX zeolite in combination with a metal, and methods of using the same.

Abstract: Methods and systems for production of consistently-sized BEA zeolite nano-crystals, the method including mixing an emulsion, the emulsion comprising a surfactant and an organic solvent; heating the emulsion; mixing a zeolite solution, the zeolite solution comprising a silicon-containing compound and an aluminum-containing compound; heating the zeolite solution; adding the emulsion to the zeolite solution drop-wise over time to create an zeolite emulsion solution mixture; heating the zeolite emulsion solution mixture; and precipitating the consistently-sized BEA zeolite nano-crystals.

Abstract: This invention relates generally to a process to perform controlled alkaline and acid treatments on inorganic porous solids, yielding superior physico-chemical and catalytic properties, whereas the particle and crystal size is not negatively influenced. Accordingly, the solids obtained in this fashion can be easily recovered from the alkaline solution. The latter being problematic in the state of the art.

Abstract: A transition-metal-CHA molecular sieve catalyst and mixed-template synthesis procedure are disclosed.

Abstract: An oxidation catalyst for the oxidation of styrene to benzaldehyde and acetophenone, the oxidation catalyst comprising: a porous support; and an active phase comprising an oxygen activation metal comprising cobalt (Co), manganese (Mn), iron (Fe), molybdenum (Mo), or a combination thereof. A method of forming the oxidation catalyst, a method of forming an oxidation product comprising benzaldehyde and acetophenone by contacting the oxidation catalyst with styrene and air in an oxidation reactor, and a system and method for reducing the fouling in a process for the production of styrene by introducing an additive stream comprising at least a portion of the oxidation product into a stream comprising styrene and byproduct divinyl benzene (DVB) are also disclosed.

Abstract: Provided is a method for producing an inexpensive, high-performance AEI type zeolite and an AEI type zeolite having a Si/Al ratio of 6.5 or less and an acidity of 1.2 mmol/g or more and 3.0 mmol/g or less, by using neither an expensive Y type zeolite as a raw material nor dangerous hydrofluoric acid. The method for producing an AEI type zeolite having a Si/Al ratio of 50 or less includes: preparing a mixture including a silicon atom material, an aluminum atom material, an alkali metal atom material, an organic structure-directing agent, and water; and performing hydrothermal synthesis of the obtained mixture, in which a compound having a Si content of 20% by weight or less and containing aluminum is used as the aluminum atom material; and the mixture includes a zeolite having a framework density of 14 T/1000 ?3 or more in an amount of 0.1% by weight or more with respect to SiO2 assuming that all Si atoms in the mixture are formed in SiO2.

Abstract: Compositions and methods for preparing mesoporous and/or mesostructured materials from low SAR zeolites are provided herewith. In particular, methods are provided that involve: (a) providing a low SAR zeolite, (b) optionally subjecting the low SAR zeolite to an acid framework modification, and (c) subjecting the framework-modified zeolite to a mesopore formation treatment. The resulting mesoporous zeolites can have bi-modal mesoporosity and higher aluminum contents relative to existing mesoporous zeolites.

Abstract: A family of crystalline aluminosilicate zeolites has been synthesized that is a layered pentasil zeolite. These zeolites are represented by the empirical formula: Mmn+Rrp+Al1-xExSiyOz where M is an alkali, alkaline earth, or rare earth metal such as sodium or strontium, R can be a mixture of organoammonium cations and E is a framework element such as gallium, iron, boron, or indium. These zeolites are characterized by unique x-ray diffraction patterns and compositions and have catalytic properties for carrying out various hydrocarbon conversion processes. The diffraction patterns can be characterized by the following table: 2? d(?) I/Io 7.92-7.99 11.04-11.31 m 8.79-8.88 ?9.94-11.09 m 20.28-20.56 4.31-4.35 w 23.10-23.18 3.83-3.84 vs 23.86-24.05 3.69-3.72 m 29.90-30.05 2.97-2.98 w 45.02-45.17 2.00-2.

Abstract: A method for producing ozone is disclosed. The ozone is separated by an adsorbent separation system from a mixture of oxygen and ozone. The adsorbent separation system operates by adsorbing ozone at higher pressures, then desorbing the ozone at normal pressures. Increased ozone concentrations result from these steps while the oxygen component can be recovered and used in producing the mixture of oxygen and ozone.

Abstract: The present invention relates to zeolite containing Cu2+ (?) and Cu2+ (?) having different NO adsorption capacities loaded at a specific ratio, wherein the zeolite is chabazite (CHA)-type zeolite, particularly chabazite (CHA)-type zeolite loaded with divalent copper ions in which the NO adsorption area ratio of Cu2+ (?)/Cu2+ (?) after exposure to NO (nitrogen oxide) for 180 sec is 80% or more. In addition, the present invention relates to a method of preparing zeolite that is ion-exchanged in a slurry state and to a catalyst including the specified chabazite (CHA)-type zeolite.

Abstract: The present disclosure discloses a multistage nanoreactor catalyst and preparation and application thereof, belonging to the technical field of synthesis gas conversion. The catalyst consists of a core of an iron-based Fischer-Tropsch catalyst, a transition layer of a porous oxide or porous carbon material, and a shell layer of a molecular sieve having an aromatization function. The molecular sieve of the shell layer can be further modified by a metal element or a non-metal element, and the outer surface of the molecular sieve is further modified by a silicon-oxygen compound to adjust the acidic site on the outer surface and the aperture of the molecular sieve, thereby inhibiting the formation of heavy aromatic hydrocarbons. According to the disclosure, the shell layer molecular sieve with a transition layer and a shell layer containing or not containing auxiliaries, and with or without surface modification can be prepared by the iron-based Fischer-Tropsch catalyst through multiple steps.

Abstract: In one aspect, the disclosed examples relate to a curable casting compound for producing plastics moulded parts. For example, the curable casting compound may include a binder component on the basis of a polymerisable monomer and a proportion of approximately 40% to approximately 85% by weight of one or more inorganic fillers. In one example, the casting compound includes an aluminosilicate as one of the inorganic fillers. Other examples are provided.

Abstract: Provides a focal-plane shutter comprising: a base plate that has an opening portion for exposure; a blade group for opening and closing the opening portion; an arm that is linked to a blade group; and a driving mechanism portion, linked to the arm, for driving the blade group through the arm, wherein: the blade group and the arm are linked through a coupling plated with a metal crystallized structure with crystallization degree of no less than 99%. This focal-plane shutter can improve the wear durability of a coupling for linking a blade group and an arm. This can prevent the production of wear debris, and prevent the coupling from becoming brittle through wear, even given repeated operations.

Abstract: Provided is a novel synthesis technique for producing pure phase small pore zeolites employing a synthesis gel of at least one zeolite, a structure directing agent and an alkaline earth metal source. Additionally provided are a novel form of AFX zeolite, a novel synthesis method for producing a zeolite with an increased Al pair content, a catalyst comprising the AFX zeolite in combination with a metal, and methods of using the same.

Abstract: There is disclosed a microporous crystalline material comprising a crystal structure having building units of double-6-rings (d6r) and pore opening of 8-rings, wherein the material comprises a first metal chosen from alkali-earth group, rare-earth group, alkali group or mixtures thereof, and a second metal chosen from copper, iron or mixtures thereof, wherein the material has molar silica to alumina ratio (SAR) from 3 to 12, and is further steamed to enhance stability. Methods of making the crystalline material are also disclosed. There is also disclosed a method of selective catalytic reduction of nitrogen oxides in exhaust gas, comprising at least partially contacting the exhaust gases with an article comprising the disclosed microporous crystalline material.

Abstract: Crystalline zeolites having a FER framework type wherein the crystallites have a dimension in the c-axis of about 500 nanometers (nm) or less, a method for their preparation and a process for the co-production of acetic acid and dimethyl ether comprising the step of contacting methyl acetate and methanol in the presence of catalysts comprising the crystalline zeolites.

Abstract: The present invention relates to a process for the preparation of a zeolitic material having a CHA-type framework structure comprising YO2 and X2O3, wherein said process comprises the steps of: (1) providing a mixture comprising one or more sources for YO2, one or more sources for X2O3, one or more tetraalkylammonium cation R1R2R3R4N+-containing compounds, and one or more tetraalkylammonium cation R5R6R7R8N+-containing compounds as structure directing agent; (2) crystallizing the mixture obtained in step (1) for obtaining a zeolitic material having a CHA-type framework structure; wherein Y is a tetravalent element and X is a trivalent element, wherein R1, R2, R3, R4, R5, R6, and R7 independently from one another stand for alkyl, and wherein R8 stands for cycloalkyl, as well as to zeolitic materials which may be obtained according to the inventive process and to their use.

Abstract: Iron-based crystal structures including FeO4 tetrahedrally coordinated in three dimensions in a framework analogous to a zeolite. The structures having the general formula AyB8Fe12O24(O/OH)6.xH2O in which A is Na, K, Cs, Rb or a combination thereof and B is an alkaline earth element or a combination of alkaline earth elements.

Abstract: A method of preparing a crystalline STT-type zeolite that has a mole ratio greater than about 15:1 of a tetravalent element oxide to a trivalent element oxide is disclosed along with a gas treatment system that incorporates the STT-type zeolite and a process for treating a gas using the STT-type zeolite. The method generally comprises forming an aqueous mixture comprising a tetravalent element oxide source, a trivalent element oxide source, a source of alkali metal, and an organic structure directing agent; maintaining the mixture under conditions that crystallize crystals of a STT-type zeolite; and recovering the crystals The STT-type zeolite crystals exhibit x-ray diffraction 2-theta degree peaks at: 8.26, 8.58, 9.28, 9.54, 10.58, 14.52, 15.60, 16.43, 17.13, 17.74, 18.08, 18.46, 19.01, 19.70, 20.12, 20.38, 20.68, 21.10, 21.56, 22.20, 22.50, 22.78, 23.36, 23.76, 23.99, 24.54, 24.92, 25.16, 25.58, 25.80, 26.12, 26.94, 27.38, 27.92, 28.30, 28.60, 29.24, 29.48, 30.08, 30.64, 31.20, 31.46, 31.80, 32.02, 32.

Abstract: Method for the preparation of a metal-exchanged zeolites or mixtures of metal-exchanged zeolites, such as Cu-SSZ-13, Cu-ZSM-5, Cu-beta, or Fe-beta, comprising the steps of providing a dry mixture of a) one or more microporous zeotype materials that exhibit ion exchange capacity and b) one or more metal compounds; heating the mixture in a gaseous atmosphere containing ammonia to a temperature lower than 300° C. for a time sufficient to initiate and perform a solid state ion exchange of ions of the metal compound and ions of the zeolite material; and obtaining the metal-exchanged zeolite material.

Abstract: Methods for coating a substrate with a coating including an adsorbent material and a binder comprising an organosilica material which is a polymer comprising independent units of Formula [Z3Z4SiCH2]3 (I), wherein each Z3 represents a hydroxyl group, a C1-C4 alkoxy group or an oxygen atom bonded to a silicon atom of another unit or an active site on the substrate and each Z4 represents a hydroxyl group, a C1-C4 alkoxy group, a C1-C4 alkyl group, an oxygen atom bonded to a silicon atom of another unit or an active site on the substrate are provided. Methods of gas separation are also provided.

Abstract: The present invention relates to a catalyst, which may be used in selective catalytic reduction (SCR), said catalyst comprising one or more zeolites of the BEA structure type, one or more zeolites of the CHA structure type, and optionally one or more zeolites of the MFI structure type, wherein at least part of the one or more zeolites of the BEA structure type contain iron (Fe), wherein at least part of the one or more zeolites of the CHA structure type contain copper (Cu), and wherein at least part of the optional one or more zeolites of the MFI structure type contain iron (Fe). Furthermore, the present invention concerns an exhaust gas treatment system comprising said catalyst as well as a process for the treatment of a gas stream comprising NOx using said catalyst as well.

Abstract: Fe-SAPO-34 silicoaluminophosphates having Fe2+ organic complexes and methods for their direct synthesis in the absence of a co-templating agent are described. Fe-SAPO-34 silicoaluminophosphate having Fe3+ located in extra-framework locations within the pores of cages of the crystal are described. They are prepared by calcining the Fe-SAPO-34 silicoaluminphosphates containing Fe2+ polyamine complexes. Methods of using the Fe-SAPO-34 having Fe3+ located in extra-framework locations within the pores of cages of the crystal in the treatment of exhaust gases are described.

Abstract: The present invention provides a method for preparing a mordenite, which is a method for preparing the mordenite through a hydrothermal crystallization by using natural aluminosilicate minerals as total silicon sources and total aluminum sources, comprising the steps of: subjecting the natural aluminosilicate minerals to activation treatment which is an activation by sub-molten salt and an activation by thermal treatment; selecting and mixing the activated natural aluminosilicate minerals according to the silicon-to-aluminum ratio of the targeted mordenite, adding thereto deionized water, sodium hydroxide, crystal seed, a templating agent to obtain a reaction mixture; adjusting the reaction mixture by using an inorganic acid to have a pH of 10-13, and then aging it at 40-80° C. for 6-24 hours; and subjecting the aged reaction mixture to hydrothermal crystallization, and then filtering, washing, drying and calcinating the crystallized product to obtain the mordenite.

Abstract: A catalyst composition includes a heterobimetallic zeolite characterized by a chabazite structure loaded with copper ions and at least one trivalent metal ion other than Al3+. The catalyst composition decreases NOx emissions in diesel exhaust and is suitable for operation in a catalytic converter.

Abstract: Described are base metal catalysts that comprise a base metal material in an amount effective to generate an exotherm over a temperature range of 300° C. to 650° C. and to oxidize soot collected by a downstream particulate filter. The base metal catalysts are substantially free of platinum group metals. Emission treatment systems and methods of remediating nitrogen oxides (NOx), particulate matter, and gaseous hydrocarbons using base metal catalyst are also described.

Abstract: Provided are a method of manufacturing a high silica zeolite using a recovered silica filtrate, and a high silica zeolite manufactured according to the method. To this end, the present invention provides the method of manufacturing the high silica zeolite using the recovered silica filtrate, including manufacturing a solated agglomerated silica from the silica filtrate including a metal salt (step 1); filtering and washing the solated agglomerated silica of step 1 to manufacture a silica cake from which the metal salt is removed (step 2); peptizing the silica cake to manufacture a silica sol (step 3); and manufacturing the high silica zeolite using the silica sol manufactured in step 3 as a silica source (step 4). Further, the present invention provides a high silica zeolite manufactured from a recovered silica filtrate through the manufacturing method and having a Si/Al mole ratio of 5 or more.

Abstract: A method for producing iron-supporting chabazite-type zeolite, comprising the following steps in order: mixing iron(II) chloride and chabazite-type zeolite, heat treating under a reducing atmosphere, and a Hydrogen reducing.

Abstract: Methods for enhancing the mesoporosity of a zeolite-containing material. Such methods may comprise contacting a composite shaped article containing at least one zeolite and at least one non-zeolitic material with at least one pH controlling agent and at least one surfactant. Such methods may be performed under conditions sufficient to increase the pore volume of at least one 10 angstrom subset of mesoporosity.

Abstract: Uses for a new crystalline molecular sieve designated SSZ-27 are disclosed. SSZ-27 is synthesized using a hexamethyl [4.3.3.0] propellane-8,11-diammonium cation as a structure directing agent.

Abstract: The present invention relates to an antimicrobial product obtained from a silicone-based system exhibiting a biocidal activity on its surface, said system comprising a silicone elastomer matrix and a mineral filler of particles chosen from the group of the silicas or aluminosilicates, for example zeolites or bentonites, said particles being dispersed in said matrix and comprising, grafted to their surface, molecules of the alkylsilane type incorporating at least one quaternary ammonium functional group.

Abstract: Compositions and methods for introducing mesoporosity into zeolitic materials employing sequential acid, surfactant, and base treatments are disclosed herein. Mesopores can be introduced into zeolitic materials, such as zeolites, by treatment with an acid and surfactant followed by treatment with a base. The resulting mesoporous zeolitic materials can have a total 20 to 135 ? diameter mesopore volume of at least 0.05 cc/g. Additionally, the resulting mesoporous zeolitic materials can have a total 0 to 20 ? micropore volume of at least 0.10 cc/g.

Abstract: This disclosure provides a molecular sieve composition having a first and second crystalline molecular sieve, made by the method comprising: (a) providing a reaction mixture comprising at least one source of ions of tetravalent element Y, at least one source of alkali metal hydroxide, water, optionally at least one seed crystal, and optionally at least one source of ions of trivalent element X, the reaction mixture having the following molar composition: Y:X2=2 to infinity, preferably from about 2 to about 1000, OH?:Y=0.001 to 2, preferably from 0.1 to 1, M+:Y=0.001 to 2, preferably from 0.

Abstract: A process for the preparation of a copper containing zeolitic material having CHA framework structure and a composition comprising the molar ratio (n YO2):X2O3 wherein X is a trivalent element, preferably Al, Y is a tetravalent element, preferably Si, and wherein n is preferably at least 20, and wherein the calcined material comprises crystallites having edges, and at least 90% of the crystallites have edges with a mean length in the range of from 1 to 5 micrometer. The process comprising the preparation of an phosphor-free aqueous solution containing at least one source for X2O3 and at least one source for YO2, at least one structure directing agent suitable for the preparation of a zeolitic material having CHA framework structure, and at least one Cu source, and the process further comprising the hydrothermal crystallization of said aqueous solution obtaining a suspension containing the copper containing zeolitic material having CHA framework structure.

Abstract: ZSM-18 is synthesized from a mixture comprising water, a source of an oxide of a tetravalent element (Y), a source of an oxide of a trivalent element (X), a source of a first cation Q selected from either butamethonium cations or N,N,N,-trimethyl-N-butylammonium cations and a source of at least one second cation M, wherein the second cation M is selected from lithium, strontium, sodium, tetraalkylammonium and mixtures thereof when the first cation, Q is butamethonium cations, and wherein the second cation M is tetramethylammonium when the first cation Q is N,N,N,-trimethyl-N-butylammonium cations.

Abstract: A new crystalline molecular sieve designated SSZ-99 is disclosed. SSZ-99 is synthesized using a methylethyldiisopropylammonium cation as a structure directing agent.

Abstract: A method for making a new crystalline molecular sieve designated SSZ-99 is disclosed. SSZ-99 is synthesized using a methylethyldiisopropylammonium cation as a structure directing agent.

Abstract: Metal nanoparticles are assembled in interrupted metal strands or other structures of characteristic dimensions and orientation to generate a giant dielectric response through a modified GE effect. Careful selection and modification of the host material and synthesis also leads to low dielectric breakdown voltages. In addition, the high dielectric composite material is employed in material configurations that are more scalable for industrial and consumer applications.

Abstract: Described is an organotemplate-free synthetic process for the production of a zeolitic material having an LEV-type framework structure comprising YO2 and optionally comprising X2O3, wherein said process comprises: (1) preparing a mixture comprising seed crystals and one or more sources for YO2; and (2) crystallizing the mixture obtained in step (1); wherein Y is a tetravalent element, and X is a trivalent element, wherein the zeolitic material optionally comprises one or more alkali metals M, and wherein the seed crystals comprise zeolitic material having an LEV-type framework structure.

Abstract: A process for converting hydrocarbons comprising the step of contacting said hydrocarbons under conversion conditions with a crystalline molecular sieve having a pore size in the range of from about 2 to about 19 ?, said molecular sieve made by a method comprising the steps of (a) providing a mixture comprising at least one source of ions of tetravalent element (Y), at least one trivalent element hydroxide source (OH?), and water, said mixture having a solid-content in the range of from about 15 wt. % to about 50 wt. %. %, preferably of from about 20% to about 30%; and (b) treating said mixture to form the desired crystalline molecular sieve with stirring at crystallization conditions sufficient to obtain a weight hourly throughput from about 0.005 to about 1 hr?1, wherein said crystallization conditions comprise a temperature in the range of from about 200° C. to about 500° C. and a crystallization time less than 100 hr, wherein said crystalline molecular sieve has a zeolite framework type of MFI.

Abstract: The present invention relates to a metal silicoaluminophosphate molecular sieve MeAPSO with a RHO framework structure and a preparation method thereof. The metal silicoaluminophosphate molecular sieve is characterized in that: the metal atoms are at least one of vanadium, copper, molybdenum, zirconium, cobalt, manganese, magnesium, iron, nickel and zinc. The chemical composition of said metal silicoaluminophosphate molecular sieve in anhydrous state is expressed as: mR.nMe.(SixAlyPz)O2, where R represents template existed in molecular sieve micropores, m is the molar number of said template per one molar of (SixAlyPz)O2, m=0.1˜0.5; Me represents metal atom entering into said metal silicoaluminophosphate molecular sieve framework, n is the molar number of Me per one molar of (SixAlyPz)O2, n=0.001˜0.30. Said metal silicoaluminophosphate molecular sieve has ion exchange performance and adsorption performance.

Abstract: A synthetic gel for crystal growth, which induces only secondary growth from the surface of a silicalite-1 or zeolite beta seed crystal and cannot induce crystal nucleation in the synthetic gel for crystal growth or on the surface of the seed crystal. The synthetic gel contains fumed silica, tetraethylammonium hydroxide (TEAOH), [(NH4)2SiF6], KOH, and H2O, or contains tetraethylorthosilicate (TEOS), tetraethylammonium hydroxide (TEAOH), hydrogen fluoride, and H2O.