Abstract: A zeolite may be synthesized having the framework topology of tschörtnerite (TSC) and an empirical formula of mA2/nO:Al2O3:ySiO2 where A is a cation such as lithium. It is anticipated that the synthetic TSC is usable in processes for separating mixtures of molecular species. The lithium analog should be useful for air separation.

Abstract: The present invention provides a zero emission type method for effective use permitting economical and effective manufacture of zeolite effectively applicable in various sectors of industry by using silicon-containing waste comprising at least one of exhaust gas treatment sludge mainly comprising SiO2 discharged from an optical film manufacturing plant, optical fiber refuse and preform refuse, and aluminum-containing waste comprising at least one of aluminum dross discharged from an aluminum-related manufacturing plant, aluminum dust collection ashes, sludge mainly comprising aluminum hydroxide, cleaning waste liquid of aluminum or an alloy thereof, scrap of metal aluminum or an alloy thereof, and alumina scrap.

Abstract: A zeolite A or an A/X mixture having an LCC >70 g liquid/100 g zeolite (hydrated) and a cold water CER >200 mg CaCO3/gram anhydrous zeolite (hydrated). The zeolite product may have a crystal size of 0.1-0.7 microns, a bulk density of 0.19-0.37 g/ml, and a median particle size of 1-5 microns. A process for making zeolite A or A/X mixtures is also claimed, including mixing a sodium silicate solution, a sodium aluminate solution, and an amorphous aluminosilicate initiator gel in a mixing vessel to create an aluminosilicate synthesis gel, and crystallizing the aluminosilicate synthesis gel to form zeolite crystals. The sodium aluminate solution may be added gradually to at least the sodium silicate solution at a rate of about 1-5% of the total batch alumina per minute, and/or a percentage of the total batch alumina may be added as alumina trihydrate (ATH) powder.

Abstract: A process for preparing molecular sieves of type Y faujasite structure is described, as well as pre-shaped bodies of faujasite structure type Y molecular sieves. The process comprises preparing a precursor gel from a source of silica-alumina or a source of alumina and a source of silica with a template agent at a SiO2/Al2O3 greater than 7 and suitable for forming a type Y zeolite, drying the precursor gel and contacting the dried precursor gel with steam, optionally followed by caustic washing, without the formation of crystalline phases other than type Y zeolite being observed. Advantageously, the pre-shaped bodies prepared with the precursor gel of Y zeolite, when subjected to the process of the invention, will have their outer surface covered by type Y zeolite crystals. The molecular sieves so obtained may be employed as catalysts or adsorbents in various processes of the chemical or oil industry.

Abstract: A porous zeolite shaped body of a zeolite is characterized in that the porous zeolite shaped body is made of a completely crystallized zeolite or a zeolite still under crystallization and composed of tetrapropylammonium ion (TPA) and silica sol in a mixing ratio (TPA/SiO2) of 0.015 to 0.08 by mole: a zeolite shaped body has an average particle diameter of 1.0 &mgr;m or larger, a bending strength of 1.5 MPa or higher, and a difference in pressure between a feed side and a permeation side of 1.0 atmospheric pressure or lower at 10 ml/cm2.min of helium gas permeation flux when a thickness of the porous zeolite shaped body is adjusted to be 1.8 mm: and a zeolite shaped body has 70% or more of the area of the parts (the sound parts) where respective particles are clearly observed by grain boundary fracture among particles composing the shaped body in the entire area of the fractured surface in microstructure observation of the fractured surface of the shaped body itself.

Abstract: The present invention relates to new crystalline, molecular sieve CIT-6 that has the topology of zeolite beta. CIT-6 can be in an all-silica form, in a form wherein zinc is in the crystal framework, or a form containing silicon oxide and non-silicon oxides. In a preferred embodiment, CIT-6 has a crystal size of less than one micron and a water adsorption capacity of less than 0.05 g/g.

Abstract: The invention pertains to a continuous process for the conversion of inorganic solid starting particles which either are amorphous or possess a degree of order into inorganic solid product particles which

Abstract: This invention relates to a method for conditioning a waste constituted of an aqueous solution of sodium hydroxide NaOH of 3 to 10 M, possibly radioactive.

Abstract: There is provided macrostructures of porous inorganic material which can have controlled size, shape, and/or porosity and a process for preparing the macrostructures. The macrostructures comprise a three-dimension network of particles of porous inorganic materials. The process for preparing the macrostructures involves forming an admixture containing a porous organic ion exchanger and a synthesis mixture capable of forming the porous inorganic material and then converting the synthesis mixture to the porous inorganic material. After formation of the composite material, the porous organic ion exchanger can be removed from the composite material to obtain the macrostructures.

Abstract: Using zeolites as the active adsorbent, adsorbent laminates have been fabricated with various sheet supports. These adsorbent laminates have been successfully operated for oxygen enrichment at high PSA cycle frequencies, such as upwards of at least 150 cycles per minute. Methods for making suitable adsorbent laminates are described. The methods generally involve forming a slurry comprising a liquid suspending agent, an adsorbent and a binder. Laminates are made by applying the slurry to support material or admixing support material with the slurry. The slurry can be applied to support material using a variety of techniques, including roll coaters, split roll coaters, electrophoretic deposition, etc. One method for making laminates by mixing support material with the adsorbent slurry comprises depositing the slurry onto a foraminous wire, draining the slurry material, and pressing the material to form a ceramic adsorbent paper. Spacers can be formed on adsorbent laminates to space one laminate from another.

Abstract: The instant invention is directed to a process for selectively removing detrital material from boro-aluminosilicate selected from EUO, NES and intergrown mixtures of EUO and NES boro-aluminosilicate topology zeolites having a Si/M ratio of greater than about 50, comprising treating said boro-aluminosilicate with a base for a time and at a temperature sufficient to remove said detrital material from said boro-aluminosilicate wherein the concentration of said base is less than about 0.5 normal. Base concentrations in excess of this level may cause the removal of framework components leading to subsequent structural degradation.

Abstract: An aluminosilicate in an acicular form, a platy form, or a columnar form and having the composition represented by aM2O.bAl2O3.cSiO2.dRmAn.yH2O, wherein M is at least one of Na and K; R is one or more elements selected from the group consisting of Na, K, Ca and Mg; A is one or more members selected from the group consisting of CO3, SO4, NO3, OH and Cl; a is from 1 to 6; b is from 2 to 8; c is from 2 to 12; d is from 0 to 4; m is from 1 to 2; n is from 1 to 3; and y is from 0 to 32; a polishing agent including the aluminosilicate; and a detergent composition including the aluminosilicate.

Abstract: An in-extrudate reaction mixture to be effectively crystallized is effectively crystallized to produce zeolitic or non-zeolitic molecular sieves. The reaction mixture is heated within a slowly rotating, double-walled reactor vessel wherein a heated medium is conducted within a space formed between the double walls of the vessel. Thus, the reaction mixture is contacted by a uniformly heated wall while being gently tumbled at low speed. The tumbling action serves to uniformly distribute the heat within the reaction mixture without subjecting the mixture to such shearing that could damage shaped particles. A relatively high quantity of reaction mixture can be handled in that way to maximize the production volumes and reduce production costs.

Abstract: Zeolites of type A wherein all the cationic sites of which occupied by sodium, calcium and/or magnesium, potassium and hydronium cations, which exhibit the advantage of having a water adsorption capacity ≧23%, which do not adsorb and therefore cannot desorb nitrogen, and which, incorporated in polyurethane (PU) resins, make it possible to increase the potlife of the PU formulations in which they are incorporated. Such zeolites are prepared by a process comprising bringing into contact an aqueous suspension of zeolite 3A, 4A or 5A, an aqueous solution of calcium or potassium salt(s) or solutions of calcium and potassium salt(s), and an acid solution, simultaneously or otherwise and in any order; and in then filtering off and washing the solid obtained, and then drying and activating the zeolite.

Abstract: Molecular sieves comprising (1) phosphorus oxide; (2) a first oxide comprising an oxide of silicon, germanium or mixtures thereof; and (3) a second oxide comprising an oxide of aluminum, boron or mixtures thereof, said molecular sieve having a mole ratio of the first oxide to the second oxide of greater than 1, containing at least about 10 weight percent phosphorus oxide in the crystal framework, and having pores greater than 5 Å in diameter are useful as catalysts in hydrocarbon conversion reactions.

Abstract: This invention relates to a process for producing zeolite-bound high silica zeolites and the use of the zeolite-bound high silica zeolite produced by the process for hydrocarbon conversion. The process is carried out by forming an extrudable paste comprising a mixture of high silica zeolite in the hydrogen form, water, silica, and optionally an extrusion aid, extruding the extrudable paste to form silica-bound high silica zeolite extrudates, and then converting the silica of the binder to a zeolite binder. The zeolite-bound high silica zeolite produced by the process comprises high silica zeolite crystals that are bound together by zeolite binder crystals. The zeolite-bound high silica zeolite finds particular application in hydrocarbon conversion processes, e.g., catalytic cracking, alkylation, disproportionation of toluene, isomerization, and transalkylation reactions.

Abstract: Hydrothermal synthesis of the natural, alkaline earth zeolites via the alteration of Y-zeolite is presented. Synthetic versions of the zeolites harmotome, heulandite, brewsterite and gmelinite are synthesized from Y-zeolite using alkaline earth cations containing solutions. The effect of the composition of the starting zeolite, the composition of the solution phase, the presence or absence of seeds and the experimental conditions are discussed.

Abstract: Synthetic zeolite is produced by force feeding separate aqueous streams of sodium silicate and of an alkali metal aluminate into coaxial alignment with each other. The coaxially aligned solutions are then introduced into in an open space in coaxial fashion with one of the streams being injected from a nozzle. The open space constitutes a mixing zone in which the two streams come together and are thoroughly mixed to produce a precrystallized mixture. This mixture then passes in unimpeded fashion through an entrance port and into a crystallization reactor or vessel. The system used for conducting this operation thus serves the dual function of being a feeding system and a mixing system whereby the silicate and aluminate streams interact with each other before entering the crystallization reactor or zone. Intimate mixing is assured by virtue of the relatively small volume of the mixing zone and the higher velocity of the stream emanating from the nozzle.

Abstract: A low silica AFI zeolite and a high purity gmelinite zeolite that have a SiO2/Al2O3 ratio of about 10 or less are provided.

Abstract: This invention describes a general process in which, by means of the use of tensioactives, it permits a reduction of the synthesis times for crystalline microporous materials based on silica with ducts with a pore opening formed of 10 or 12 tetrahedra of silica. This procedure is based on the addition of a tensioactive, which can be cationic, anionic or neutral, to the reaction mixture wherein the zeolite is formed. In addition, this new synthesis method increases the efficiency of the reagents used in the synthesis of zeolites and the stability of the materials formed, permitting the size of crystal to be controlled. And in cases wherein there exists competition for the growth of different microporous materials, it is possible to promote the appearance of one phase with respect to another competing with it by a proper selection of surfactant.

Abstract: Aluminosilicate zeolites are formed in a novel reaction medium which contains a silicate source and an aluminum source in an aqueous alkaline solution and which reaction medium further includes an additional electrolyte salt. The addition of the electrolyte salt provides nucleation sites for the zeolite so as to form very small crystals. In high silica reaction environments, it is possible to form high aluminum zeolites which contain occluded silicate and wherein the morphology of the zeolites comprise macroscopic aggregates of microcrystalline zeolites. The addition of the electrolyte salt can also decrease the reaction time or temperature needed for crystallization.

Abstract: The present invention relates to a method of forming an aluminosilicate zeolite having a Si/Al≦1.1. The method comprises forming a reaction mixture by mixing a source of silica, and a source of aluminum in an aqueous alkaline solution having a pH of at least 12.0, wherein the Si/Al of said mixture is greater than 1.0.

Abstract: An improved method for preparing and activating monolith adsorbents is disclosed. A regeneration gas is passed through the formed monolith adsorbent at a temperature sufficient to decompose at least part of the binding agents in the adsorbent. The present invention also provides for the use of the treated adsorbent monoliths in separating gases in cyclical separation processes such as vacuum swing adsorption processes.

Abstract: Novel morphologies are provided for aluminosilicate zeolite ion-exchange materials useful for static water softening. The zeolites are provided in the form of large aggregates composed of submicron zeolite crystals. Rapid exchange rates, high hardness ion capacity and increased attrition resistance characterize the zeolite ion exchangers.

Abstract: A catalyst composition is disclosed comprising a zeolite having a non-framework aluminum content of about less than 25 percent of the total aluminum content, a bulk silica:alumina ratio of about 6.5 to about 10.0 and a unit cell size ranging from about 2.440 to about 2.464 nm.

Abstract: Method of preparing zeolite single crystals with straight mesopores by applying a synthesis gel with zeolite precursor composition within the pore system and on the surface of a particulate matrix material template of carbon comprising the steps of:

Abstract: The present invention relates to a process for the preparation of zeolites X and LSX agglomerated with a binder and for which approximately 50 to approximately 99% of the exchangeable sites are occupied by lithium ions, which consists in carrying out the exchange with lithium of a portion of the exchangeable cations of the starting zeolite by bringing the said zeolite, distributed in a carrousel of at least 2 receptacles in the stationary bed form which are arranged in series in an interchangeable manner, into contact with a solution of lithium compounds (1) conveyed through the-said carrousel whose sequence of receptacles is modified cyclically at given time intervals; when the desired degree of exchange with regard to lithium is achieved for the zeolite of the 1st receptacle, the latter is taken out of the carrousel and the zeolite which is present therein is freed from the solution of lithium compounds by washing, then discharged (4) and optionally replaced by a fresh charge of zeolite to be exchanged, and

Abstract: To provide a humidity adsorbent agent having duplicating advantages of hydrophilic zeolite and silica gel, and a humidity adsorbent element using thereof, a humidity adsorbent agent is used an alumino-silicate which is replaced a part of sodium to Lanthanide in a hydrophilic zeolite. A humidity adsorbent element is constituted that is supported the agent on a carrier comprised of inorganic fiber paper.

Abstract: Low temperature hydrothermal treatment of an LTL zeolite-producing mixture produces a colloidal suspension of the zeolite; the suspension may be used as seeds in Al— and Ga—LTL zeolite manufacture.

Abstract: Microporous and mesoporous metal silicates are prepared by the hydrothermal reaction of a silicon and metal source in the presence of a template. The choice of raw materials influences the purity and hence the catalytic activity of the products. A pyrogenic mixed oxide is used as the silicon and metal source. Prepared products have the composition (SiO2)1-x(AmOn)x, where A is Ti, Al, B, V or Zr and x is 0.005 to 0.1. Shaped objects of the microporous and mesoporous metal silicates are obtained directly by using a shaped object of the pyrogenic mixed oxide. The products obtained are used as oxidation catalysts.

Abstract: The topic of the present invention is the development of a method of producing inexpensive artificial zeolite of the desired quality employing unused resources, such as descended pyroclastic materials, incineration ash, glass waste, diatomaceous earth waste, aluminum dross, etc., as the starting materials. The present invention is a method whereby artificial zeolite is produced by heat treatment in the presence of water and alkali of an inorganic component comprising silicic acid or aluminum, or a mixture that has been obtained by adding glass, diatomaceous earth and aluminum dross, etc., to an inorganic component comprising silicic acid or aluminum. It is preferred that the alkali is sodium hydroxide or potassium hydroxide, the water and alkali are an aqueous alkali solution, the concentration of this aqueous alkali solution is 2 to 4 N, and heat treatment exceeds 100° C.

Abstract: A synthetic porous crystalline material has the structure of ZSM-5 and a composition involving the molar relationship:

Abstract: The present invention relates to zeolites X, most of the exchangeable sites of which are occupied by lithium and di- and/or trivalent cations, having an improved thermal stability and an improved crystallinity with respect to zeolites of the prior art with the same degree of exchange of lithium and of di- and/or trivalent cations.

Abstract: The invention includes a method for preparing a crystalline zeolite having the X-ray diffraction lines of Table 1. The method includes preparing a template-free reaction mixture including at least one active source of a first oxide selected from the group consisting of an oxide of silicon, germanium or both, optionally at least one active source of a second oxide selected from the group consisting of an oxide of aluminum, boron, gallium, iron or a mixture thereof; and heating the reaction mixture at crystallization conditions for sufficient time to form a crystallized material containing zeolite crystals having the X-ray diffraction lines of Table 1, where said zeolite crystals have a first oxide/second oxide molar ratio greater than 12.

Abstract: P-type zeolite having the oxide formula M2/nAl2O3 (1.8-2.66) SiO2 y H2O and having a Calcium Binding Capacity of between 100 and 145 mg/g, preferably between 110 and 140 and a Calcium uptake rate of between 12 and 100 seconds, preferably below 50 seconds can be prepared from metakaolin.

Abstract: A method for the preparation of small zeotype crystals with controlled sizes comprising the steps of synthesizing inside a porous material having a majority of pores less than 1000 Å a synthesis gel consisting essentially of (a) a zeotype precursor composition comprising hydratized oxides of Si, Al and P and metal compounds (b) a zeolite template; and heating or autoclaving the porous support material containing synthesis gel, whereby zeotype crystals are formed; and rinsing and drying the porous support material containing zeotype crystals.

Abstract: Novel synthetic zeolite compositions of extremely small particle sizes that have increased loading capability, and process technology for producing such compositions are described. So far as is presently known, it has never been possible to form such compositions heretofore. The process technology involves, inter alia, contacting the zeolite cake formed in its production with a specified type of treating agent and then subjecting the treated zeolite to physical subdivision.

Abstract: Hydrothermal synthesis of the natural, alkaline earth zeolites via the alteration of Y-zeolite is presented. Synthetic versions of the zeolites harmotome, heulandite, brewsterite and gmelinite are synthesized from Y-zeolite using alkaline earth cations containing solutions. The effect of the composition of the starting zeolite, the composition of the solution phase, the presence or absence of seeds and the experimental conditions are discussed.

Abstract: A method and device for the filtration and/or purification of fluids water or other solutions containing microbiological contaminants, such as fluids containing including bacteria and/or viruses, where the fluid water is passed through a purification material composed of apatite and absorption media in a fixed binder matrix.

Abstract: A bentonite based organoclay, when mixed with a biocidal quaternary amine containing a benzyl molecule within its structure, acts as a reasonably effective biocide.When this organoclay is further treated with iodine and iodide compounds, its efficiency is greatly enhanced.

Abstract: A new family of crystalline manganese phosphate compositions has been prepared. These compositions have an extended network which network can be a one-, two-, or three-dimensional network. The composition has an empirical formula of:(A.sup.3+).sub.v (Mn.sup.b+)(M.sup.c+).sub.x P.sub.y O.sub.zwhere A is a structure directing agent such as an alkali metal, M is a metal such as Al, Fe.sup.3+ and "b" is the average manganese oxidation state and varies from greater than 2.0 to a maximum of 3.0. These compositions can be used as adsorbents and as catalysts in the oxidation of hydrocarbons.

Abstract: A method is provided for zeolite synthesis from a synthesis medium containing in particular a trivalent aluminum source, a tetravalent silicon source, at least an alkaline or alkaline-earth cation in hydroxide form and water in a reactor containing a solid helical moving body in a guiding tube defining an internal space and a space external to the tube. The invention is characterized in that the synthesis medium is circulated in the reactor in a continuous flow passing through the internal space then the space external to the tube and returning to the internal space, only driven by the roation of the solid helical moving body, at a speed of less than 500 rpm, in the tube which is kept fixed, the synthesis medium being kept at a temperature suitable for at least one of the ripening operations or the crystal growth of the synthesized zeolite. The invention also is directed to a device for implementing the method.

Abstract: A process of preparing a ferrierite-type zeolite, with high crystallinity rate and having a anhydrous stage composition expressed by the formula M.sub.x (AlO.sub.2).sub.x (SiO.sub.2).sub.y, M being a cation of an alkaline metal such as Na or K, or a mix of both. The process contains a gel-producing step, by addition of boric acid to an aqueous aluminum-sulfate solution mixed with a aqueous solution containing oxides of Na and/or K and of Si, without the use of a structural agent. The invention also pertains to any zeolite obtained by this process, and its uses.

Abstract: The instant invention is directed to a process for selectively removing detrital material from boro-aluminosilicate selected from EUO, NES and intergrown mixtures of EUO and NES boro-aluminosilicate topology zeolites having a Si/M ratio of greater than about 40, comprising treating said boro-aluminosilicate with a base for a time and at a temperature sufficient to remove said detrital material from said boro-aluminosilicate wherein the concentration of said base is less than about 0.5 normal. Base concentrations in excess of this level may cause the removal of framework components leading to subsequent structural degradation.

Abstract: A composition of matter represented by the formulaM.sup.n+.sub.z/n [Si.sub.(2-x-y) Al.sub.(y) Zn.sub.(x) ]O.sub.4 .multidot..cndot.wH.sub.2 OwhereinM is a cation selected from Groups 1, 2, 7, 10, 11, 12 and the f block elements as defined by the Periodic Table of the elements as adopted by IUPAC; n is the valence of the selected cation, M; x is greater than or equal to 0.02 but less than or equal to 1;y is less than or equal to 0.98; z>0.54; and w ranges from 0 to about 8;provided that when z.gtoreq.0.80, then 2x+y does not equal z;which composition of matter has the FAU structure with zinc residing in tetrahedral positions in the framework of the FAU structure;and whereupon such composition of matter is converted to a hydrated sodium form, the hydrated sodium form of the composition of matter exhibits a lattice constant (a.sub.0)wherein ##EQU1## where R represents the Si/Al molar ratio of the composition of matter.

Abstract: The invention includes a method for preparing a crystalline zeolite having the X-ray diffraction lines of Table 1. The method includes preparing a template-free reaction mixture including at least one active source of a first oxide selected from the group consisting of an oxide of silicon, germanium or both, optionally at least one active source of a second oxide selected from the group consisting of an oxide of aluminum, boron, gallium, iron or a mixture thereof; and heating the reaction mixture at crystallization conditions for sufficient time to form a crystallized material containing zeolite crystals having the X-ray diffraction lines of Table 1, where said zeolite crystals have a first oxide/second oxide molar ratio greater than 12.

Abstract: An oxygen scavenging composition composed of a carrier material and a metal-loaded cationic exchange material having the metal in a zero valence state. The composition is contained within the interior cavity of a container to scavenge oxygen therein. The composition may form at least a part of the interior surface of the container or be present therein in the form of a film, mat, sachet or ceramic.

Abstract: A polyester composition comprising 0.005 to 10% by weight compound oxide particles having a volume average particle meter of 0.005 to 2 .mu.m, a relative standard deviation .sigma. of the particle diameter of not more than 0.3, and composed mainly of silicon (Si), aluminum (Al) and at least one alkali metal (M), wherein the contents of the silicon, aluminum and alkali metal satisfy the following requirements: 10 wt. %.ltoreq.Si.ltoreq.45 wt. %, 3 wt. %.ltoreq.Al.ltoreq.30 wt. % and 0.5 wt. %.ltoreq.M.ltoreq.20 wt. %, respectively. The polyester composition, particularly when formed into films, has excellent surface evenness, running ability and abrasion resistance, and such films are suitable particularly for magnetic recording media and other applications.

Abstract: The present invention provides antibacterial zeolite exhibiting a less discoloring action, obtained by treating the surface of zeolite supporting an antibacterial metal with 0.5 to 20% by weight, based on said zeolite, of a composition comprising (A) 100 parts by weight of a hydrolyzable silane and/or oligomer thereof which comprises 10 to 100% by weight of a hydrolyzable silane and/or oligomer thereof having an aryl group; (B) 1 to 1000 parts by weight of an organopolysiloxane having a basic nitrogen atom; and (C) 0.2 to 250 parts by weight of an acid which is soluble in water and which can form a salt with the aforesaid (B). The present antibacterial zeolite exhibits a remarkably less action of discoloring an organic polymer which contains the antibacterial zeolite when the polymer blend is placed under the influence of heat or the sunshine.

Abstract: A process for synthesizing a high-silica aluminosilicate molecular sieve, includes: subjecting, to hydrothermal synthesis, a raw material containing Al, H, O and Si and, as other elements, at least Fe and having a Si/Al molar ratio of 50 or more and a Si/Fe molar ratio of 80 or less (45 or less when a high-silica aluminosilicate molecular sieve having a .beta. type zeolite structure is produced) and then subjecting the resulting material to heat treatment in an oxidizing atmosphere at 300.degree. C. or more. The above process can synthesize a high-silica zeolite low in Al content directly without dealumination operation, and can provide process simplification and a higher yield.