Abstract: A honeycomb structure constituted by porous cell walls forming a cell group consisting of a plurality of cells, and a honeycomb outer wall surrounding and holding the outermost peripheral cells located at the circumference of the cells, a porosity is 5% to less than 30%, a basic wall thickness (Tc) of the cell walls is 0.030 mm≦Tc<0.076 mm, an average surface roughness (Ras) of the outer wall is 0.5 &mgr;m≦Ras≦10 &mgr;m, and/or an average height (RzDINs) on the surface of the outer wall from a local maximum point to a next local minimum point is 5 &mgr;m≦RzDINs≦50 &mgr;m; and a process for producing such a honeycomb structure using a raw material having a specific average diameter. The honeycomb structure satisfies requirements of improved purification ability, erosion resistance and improved canning property at a good balance.

Abstract: Hollow glass microspheres obtained from fly ash (cenospheres) are impregnated with extractants/ion-exchangers and used to remove hazardous material from fluid waste. In a preferred embodiment the microsphere material is loaded with ammonium molybdophosphonate (AMP) and used to remove radioactive ions, such as cesium-137, from acidic liquid wastes. In another preferred embodiment, the microsphere material is loaded with octyl(phenyl)-N—N-diisobutyl-carbamoylmethylphosphine oxide (CMPO) and used to remove americium and plutonium from acidic liquid wastes.

Abstract: The attrition resistance of sorbent compositions are enhanced by acid-treating the perlite component of the sorbent. The efficiency of making a promoter metal-containing sorbent composition is enhanced using a novel method for incorporating the promoter metal into the sorbent.

Abstract: The invention concerns a method for preparing organic-inorganic hybrid materials with controlled porosity and functionality, comprising hydrolysis and condensation polymerisation of at least a compound of formula (I): Z—R1—Si(OR)(OR′)(OR″), wherein: Z represents either an atom selected among chlorine, bromine or iodine atoms, or an amino or phosphino group; R, R′ and R″, independently of one another, represent an alkyl radical comprising on to four carbon atoms; R1 represents a divalent radical derived from an aliphatic hydrocarbon chain comprising 1 to 30 carbon atoms, wherein are optionally interspersed one or several arylene; —O—, —S—, —O—C(═O), —N(R6)—C(═O)— or N(R6), with at least an alkaline or alkaline-earth silicate of (II) in a mol ratio (I)/(II)=1/9 in the presence of at least a non-ionic surfactant in micellar concentration, to form a mesoporous silica represented by formula (III): Z—R1&

Abstract: The attrition resistance of sorbent compositions are enhanced by controlling the particle size distribution of the perlite component of the sorbent.

Abstract: A sorbent material is provided comprising a material reactive with sulfur, a binder unreactive with sulfur and an inert material, wherein the sorbent absorbs the sulfur at temperatures between 30 and 200° C. Sulfur absorption capacity as high as 22 weight percent has been observed with these materials.

Abstract: A process for producing a molybdenum-bismuth-iron-containing metal oxide fluidized bed catalyst which has a controlled particle diameter and has satisfactory activity and physical properties. In a process for producing a fluidized bed catalyst containing molybdenum-bismuth-iron and silica as a carrier component, dried products formed in a spray drying step and having a particle diameter outside a desired range are pulverized, then the pulverized one is mixed into a slurry before spray drying, the resulting mixture is spray-dried, and the spray-dried particles are subjected to a classification operation to obtain particles having a diameter within the desired range, which are then calcined. The catalyst produced according to the present invention is suitable for producing acrylonitrile by ammoxidation of propylene.

Abstract: A method of making a coated substrate which includes the steps of applying a layer of a coating composition, said coating composition comprising an alkenyl functional organopolysiloxane and a hydride functional organopolysiloxane, to the substrate, said substrate comprising a catalytically effective amount of a precious metal catalyst, and allowing the layer to cure, allows the use of a non-catalyzed coating bath having a very long useful life, while providing a highly reactive coating layer that may be rapidly cured at low temperature. A catalyst-containing article comprising a substrate selected from papers, polymer films, polymer coated papers, metal foils and combinations thereof, a precious metal catalyst disposed on at least one surface of the substrate, and an addition curable siloxane coating composition on said deposited precious metal catalyst, wherein said catalyst capable of catalyzing the cure of said addition curable siloxane coating composition.

Abstract: A hydrocarbon conversion catalyst contains at least one silica-alumina having the following characteristics: A content by weight of silica SiO2 of between 10 and 60% by weight; an Na content less than 300 ppm by weight; a total pore volume of between 0.5 and 1.2 m/g measured by mercury porosimetry; a porosity of said silica-alumina wherein: the volume of mesopores whose diameter is between 40 Å and 150 Å, and whose mean diameter varies between 80 and 120 Å represents between 30 and 80% of the total pore volume, and (ii) the volume of macropores, whose diameter is greater than 500 Å and preferably between 1000 Å and 10,000 Å represents between 20 and 80% of the total pore volume; a specific surface area greater than 200 m2/g, and at least one hydro-dehydrogenating element selected metals of group VIB and group VIII, and optionally phosphorus, boron, silicon, or elements of group VIIA, VIIB or VB.

Abstract: Porous microcomposites have been prepared from perfluorinated ion-exchange polymer and metal oxides such as silica using the sol-gel process. Such microcomposites possess high surface area and exhibit extremely high catalytic activity.

Abstract: A composition comprising a promoter and a metal oxide selected from the group consisting of a gallium oxide, an indium oxide, and combinations of any two or more thereof, wherein at least a portion of the promoter is present as a reduced valence promoter and methods of preparing such composition are disclosed. The thus-obtained composition is employed in a desulfurization zone to remove sulfur from a hydrocarbon stream.

Abstract: This invention relates to filterable composite adsorbents comprising one or more adsorbent components and one or more filtration components, and methods for preparing and using same. More particularly, this invention pertains to filterable composite adsorbents and filterable composite adsorbent products which are suitable for use in filtration applications, and which comprise one or more microparticulate or colloidal adsorbent components selected from the group consisting of silica gel, fumed silica, neutral clay, alkaline clay, zeolite, solid catalyst, alumina, adsorbent polymer, alkaline earth silicate hydrate, and combinations thereof, which bear the property of adsorption, which are intimately bound to one or more functional filtration components selected from the group consisting of biogenic silica (e.g., diatomite, rice hull ash, sponge spicules), natural glass (e.g.

Abstract: Mesostructured and microporous to mesoporous organofunctionalized silica compositions are described. The compositions incorporate the organofunctional group L as part of a LSiO3 unit in the framework of the compositions. In addition the compositions incorporate the organofunctional group R as part of a O3Si—R—siO3 unit in the framework of the compositions. The compositions are useful as molecular sieves, supports for catalysts and numerous other applications requiring an organo group on surfaces of a silica.

Abstract: A separation column is provided with a photopolymer component which, when irradiated, causes controlled porosity polymerization. A particularly preferred embodiment is wherein the separation medium is retained by a photopolymer frit, which can be reliably and reproducibly generated with controlled porosity.

Abstract: Attrition resistant, sorbent compositions for the removal of elemental sulfur and sulfur compounds, such as hydrogen sulfide and organic sulfides, from cracked-gasoline and diesel fuels are prepared by the impregnation of a sorbent support comprising zinc oxide, expanded perlite, and alumina with a promoter such as nickel, nickel oxide or a precursor of nickel oxide followed by reduction of the valence of the promoter metal in the resulting promoter metal sorbent support composition.

Abstract: The honeycomb structure of the present invention is formed from a nonwoven fabric in which a biologically soluble fiber is used, and exhibits superior biological solubility and high heat resistance.

Abstract: New aerogels are disclosed which comprise silica and at least one organic polymer having polar functional groups. Also disclosed are methods for making such aerogels and for making them as substantially transparent objects. In addition, gas detectors, liquid and gas absorbing objects, and optical devices made using these aerogels are disclosed. The present invention concerns optical elements which are substantially transparent and exhibit low refractive indices. The invention further relates to detectors of reactive and absorbate gases based on the physical changes exhibited by the aerogels upon reacting with or absorbing such gases. The present invention further concerns printable objects comprising these aerogels, specifically when the print media are imaged by the absorption of liquid and the spatial localization of pigments or dyes. The invention further concerns reactive gas absorbers comprising these aerogels and the catalytic function the aerogels serve to catalyze subsequent chemical reaction.

Abstract: A sorbent composition is provided which can be used in the desulfurization of a hydrocarbon-containing fluid such as cracked gasoline or diesel fuel. The sorbent composition contains a support component and a promoter component with the promoter component being present as a skin on the support component. Such sorbent composition is prepared by a process of impregnating a support component with a promoter component, wherein the promoter component has been melted under a melting condition, followed by drying, calcining, and reducing to thereby provide the sorbent composition.

Abstract: Pyrogenically prepared silicon dioxide with the following physicochemical properties: 1. Average particle size (D50 value)D50≧150 nm (dynamic light scattering, 30 wt %) 2. Viscosity (5 rpm, 30 wt %) &eegr;≦100 m·Pas 3. Thixotropy of Ti (&eegr;(5 rpm))/(&eegr;(50 rpm))≦2 4. BET surface area 30-60 m2/g 5. Compacted bulk=100-160 g/L 6. Original pH≦4.5 can be used for the preparation of dispersions and glass bodies.

Abstract: The invention provides an exhaust gas treatment agent characterized in that it comprises calcium silicate hydrate particles having a mean particle diameter of 0.2 to 4 &mgr;m and a specific surface area of not less than 60 m2/g and calcium hydroxide particles having a mean particle diameter of not more than 4 &mgr;m and the content of calcium hydroxide particles in both particle components is within the range of 20 to 60% by weight; a method of producing the exhaust gas treatment agent; and a process for the treatment of exhaust gases and soot and dust which uses the exhaust gas treatment agent.

Abstract: This invention relates to metallocene catalyst compositions which are highly active for the polymerization of olefins, particularly prochiral &agr;-olefins. The catalyst compositions contain at least one metallocene, and least one activator and a support that has been fluorided using a fluoride containing compound.

Abstract: This invention relates to metallocene catalyst compositions which are highly active for the polymerization of olefins, particularly prochiral &agr;-olefins. The catalyst compositions contain at least one metallocene, and least one activator and a support that has been fluorided using a fluoride containing compound.

Abstract: The present invention relates to a gas processing agent for removing carbon monoxide, hydrogen, carbon dioxide and water vapor in a gas at the same time, which can maintain a high oxidation activity and have a long life time, a manufacturing method therefor and a gas purification method. More specifically, the present invention relates to a gas processing agent made of a catalyst made of an inorganic porous material layer containing at least one selected from a group consisting of platinum, palladium, rhodium and ruthenium, or oxides thereof and an adsorbent, and a manufacturing method therefor, a gas purifier, a gas purification method and a gas purification apparatus using the gas processing agent.

Abstract: Attrition resistant, sorbent compositions for the removal of elemental sulfur and sulfur compounds, such as hydrogen sulfide and organic sulfides, from cracked-gasoline and diesel fuels are prepared by the impregnation of a sorbent support comprising zinc oxide, expanded perlite, and alumina with a promoter such as nickel, nickel oxide or a precursor of nickel oxide followed by reduction of the valence of the promoter metal in the resulting promoter metal sorbent support composition.

Abstract: A synthetic, semi-crystalline, porous inorganic oxide composition containing a reactive organic silane moiety which on the surface of pore walls. The composition is prepared from a poly(oxyalkylene) based surfactant and a hydrolyzable organic silane. The surfactant is preferably a poly (ethylene) oxide, a poly(propylene) oxide polymer or mixtures thereof. The organic silane is preferably mercaptopropylsilane. The compositions are particularly useful as adsorbents, and catalysts.

Abstract: Described is a method for producing copolymerized sol-gel derived sorbent particles for the production of copolymerized sol-gel derived sorbent material. The method for producing copolymerized sol-gel derived sorbent particles comprises adding a basic solution to an aqueous metal alkoxide mixture for a pH≦8 to hydrolyze the metal alkoxides. Then, allowing the mixture to react at room temperature for a precalculated period of time for the mixture to undergo an increased in viscosity to obtain a desired pore size and surface area. The copolymerized mixture is then added to an immiscible, nonpolar solvent that has been heated to a sufficient temperature wherein the copolymerized mixture forms a solid upon the addition. The solid is recovered from the mixture, and is ready for use in an active sampling trap or activated for use in a passive sampling trap.

Abstract: A sorbent composition comprising a promoter metal, zinc oxide, and a high density refractory metal oxide used to more effectively desulfurize a sulfur-containing fluid such as cracked-gasoline or diesel fuel.

Abstract: Disclosed are amorphous precipitated silicas, silica gels, and amorphous carbons derived from biomass and methods of producing them with and without adhered or deposited amorphous carbons produced by acidifying a caustic silicate solution produced by caustic digestion of biomass ash containing silica with and without activated carbon, the ash being obtained from thermal pyrolysis of the biomass, the acidifying effective to produce a slurry of the precipitated silica and silica gels with and without adhered or deposited amorphous carbon, and separated from the slurry the precipitated silicas and silica gels with and without the adhered or deposited amorphous carbons. The properties of the precipitated silica with adhered or deposited carbon being within the range as utilized in rubber compositions thereby avoiding the blending of silica and carbon components for such use.

Abstract: In one embodiment, a method of forming an absorbent material from clay fines, which includes treating the clay fines with an additive, wetting the clay fines so as to have a moisture content of the clay fines of about 22% to 50% of the weight of the clay fines plus the weight of the additive, and extruding the treated and wetted clay fines so as to produce the absorbent material is disclosed. In a particular embodiment, at least a portion of the clay fines is a clay selected from sepiolite, saponite, hectorite, attapulgite clay, and mixtures thereof.

Abstract: A modified silica support having a polar phase bound to its surface and suitable for use for chromatograpic separations, having the following formula: 1

Abstract: The current invention describes organoclay compositions and methods of using them for removing impurities from contaminated liquids. The compositions are formed by contacting an attapulgite, sepiolite, or zeolite clay mineral with an alkylamine base. The method of use involves contacting the organoclay composition with a contaminated liquid, such as oil in water, allowing the organoclay to absorb the contaminants. The organoclay can be in the form of a granular solid for inline filter applications, or it can be a finely divided powder for other applications.

Abstract: Novel sorbent systems for the desulfurization of cracked-gasoline and diesel fuels are provided which are comprised of a bimetallic promotor on a particulate support such as that formed of zinc oxide and an inorganic or organic carrier. Such bimetallic promotors are formed of at least two metals of the group consisting of nickel, cobalt, iron, manganese, copper, zinc, molybdenum, tungsten, silver, tin, antimony and vanadium with the valence of same being reduced, preferably to zero. Processes for the production of such sorbents are provided wherein the sorbent is prepared from impregnated particulate supports or admixed to the support composite prior to particulation, drying, and calcination. Further disclosed is the use of such novel sorbents in the desulfurization of cracked-gasoline and diesel fuels whereby there is achieved not only removal of sulfur but also an increase in the olefin retention in the desulfurized product.

Abstract: The invention relates to shaped bodies containing organic-inorganic hybrid material in addition to gold and/or silver particles, to a method for the production thereof and to the use of the same as catalysts. The shaped-body catalysts are characterized by a longer service life than the original powder catalysts, in addition to a high selectivity and productivity. The inventive shaped-body catalysts also enable pressure losses to be kept to a negligible level in technically sophisticated reactors, for example fixed-bed reactors.

Abstract: Mesoscopically ordered, hydrothermally stable metal oxide-block copolymer composite or mesoporous materials are described herein that are formed by using amphiphilic block copolymers which act as structure directing agents for the metal oxide in a self-assembling system.

Abstract: A sorbent composition comprising a reduced-valence promoter and a steam-treated support can be used to desulfurize a hydrocarbon-containing fluid such as cracked-gasoline or diesel fuel.

Abstract: A sorbent composition comprising a support, a promoter, and a silicate can be used to desulfurize a hydrocarbon-containing fluid such as cracked-gasoline or diesel fuel.

Abstract: The present invention provides compositions including a mixture containing sulfides and/or polysulfides of ammonium, sodium, potassium, lithium, etc.

Abstract: The present invention relates to a method for the removal of mercury from a gas stream. The method is characterized in that at a temperature above 170° C. the gas stream is contacted with a sorbent that as the active component is comprised of a mixture of substantially silica-alumina compounds and/or calcium compounds. According to a preference, the sorbent is kaolin, that may or may not be in the dehydrated form of meta-kaolin and is optionally obtained by thermal conversion of a material chosen from paper waste or residue from the paper industry. By this method it is possible to remove mercury at temperatures higher than room temperature.

Abstract: The present invention discloses an adsorbent for selective adsorption of unsaturated hydrocarbons from its mixture with saturated hydrocarbons, carbon dioxide, carbon monoxide, permanent gases or mixture thereof comprising of silver or copper compound 1 to 70 wt % and substrate 30 to 99%. The invention also discloses a method for the manufacture of an adsorbent for use in selective adsorption of unsaturated hydrocarbons or mixtures thereof from a mixed gas, which comprises impregnating or dispersing a silver (I) or copper (I) compound on a mesoporous substrate or support to form a composite material and subjecting said composite material to heat treatment. In another important aspect, the present invention also relates to a process for separating ethylene and/or propylene from gas mixtures containing them by passing a stream of said gas mixture through a mass of said adsorbent at a temperature from 0° C. to 170° C. and a pressure from 0.

Abstract: An object of the present invention is to provide a treatment agent superior in harm-removing performance to metal hydride containing exhaust gas, and its production method as well as a treatment method. It is a mixture of either copper hydride or basic copper hydride and silicon compound or a mixture, wherein parts of said copper compound and said silicon compound form a complex. A preparation of the treatment agent is made by a precipitation method, wherein a copper salts solution serves as a precipitation mother solution, and a mixture solution of either alkali hydride or alkali carbonate and alkali silicate serves as a precipitating agent. A treatment agent obtained as its result shows a high harm-removing performance to the metal hydride gas and a low heat generation, for which reason the agent is useful for treatment of the metal hydride containing exhaust gas generated in semiconductor manufacturing.

Abstract: An adsorbent which desorbs water by being heated and adsorbs water by being chilled, comprising a porous body having a pore volume of not less than 0.2 cm3/g and a pore size from 0.6-1.6 nm. This adsorbent is good for an adsorptive-type refrigeration apparatus, used in an automotive air conditioner, which has an adsorbing core.

Abstract: Absorbent sulfur oxide composition, regeneratable, usable in thermal generators and comprising a magnesian type pulverulent absorbent. According to the invention, the composition further comprises a powder having a grain size less than 50 micrometers and containing at least one metallic oxide.

Abstract: The present invention relates to a material and a method for treating of photographic effluents in order to eliminate micro-organisms and pollutant by-products so as to control bacterial growth and thereby obtain effluents that comply with regulatory requirements. The method for preparing an oxidizing material according to the invention comprises the dispersion in colloidal form of a metal or metal compound in an aqueous solution of an inorganic aluminosilicate polymer, said aluminosilicate being able to form an inorganic gel, and said metal or metal compound being able to cause the oxidation of oxidizable products and (or) micro-organisms to be eliminated, followed by the addition of a base to cause said aluminosilicate to gel. The metal is preferably silver in a powder form that is able to form a colloid when it is dispersed. The oxidizing material of the invention is efficient especially for the treatment of photographic baths, in particular wash baths placed after the fixing step.

Abstract: Compositions and methods for selectively binding specific metal ions, such as Ca2+and Cd2+, contained in a source solution are disclosed and described. This is accomplished by the use of a composition comprised of an EGTA ligand covalently bonded to a particulate solid supports through a hydrophilic spacer. The composition formula of the present invention is SS—A—X—L where SS is a particulate solid support such as silica or a polymeric bead, A is a covalent linkage mechanism, X is a hydrophilic spacer grouping, L is an EGTA ligand with the proviso that when SS is a particulate organic polymer, A—X may be combined as a single covalent linkage.

Abstract: Attrition resistant, sorbent compositions for the removal of elemental sulfur and sulfur compounds, such as hydrogen sulfide and organic sulfides, from cracked-gasoline and diesel fuels are prepared by the impregnation of a sorbent support comprising zinc oxide, expanded perlite, and alumina with a promoter such as nickel, nickel oxide or a precursor of nickel oxide followed by reduction of the valence of the promoter metal in the resulting promoter metal sorbent support composition.

Abstract: A nickel/rhenium catalyst composition for the reductive amination of lower aliphatic alkane derivatives is described. The catalyst includes from about 2 to about 75 weight percent nickel and has a nickel to rhenium weight percent ratio of from about 1:1 to about 200:1. The nickel and rhenium are supported on an alumina-silica support which contains from about 5 to about 65 weight percent silica and has a BET surface area of from about 30 to about 450 m2/g. A process for the reductive amination of lower aliphatic alkane derivatives using such a catalyst composition is also provided.

Abstract: A hydrogen storage composition based on a metal hydride dispersed in an aerogel prepared by a sol-gel process. The starting material for the aerogel is an organometallic compound, including the alkoxysilanes, organometals of the form M(OR)x and MOxRy, where R is an alkyl group of the form CnH2n+1, M is an oxide-forming metal, n, x, and y are integers, and y is two less than the valence of M. A sol is prepared by combining the starting material, alcohol, water, and an acid. The sol is conditioned to the proper viscosity and a hydride in the form of a fine powder is added. The mixture is polymerized and dried under supercritical conditions. The final product is a composition having a hydride uniformly dispersed throughout an inert, stable and highly porous matrix. It is capable of absorbing up to 30 moles of hydrogen per kilogram at room temperature and pressure, rapidly and reversibly. Hydrogen absorbed by the composition can be readily be recovered by heat or evacuation.

Abstract: A novel compound which can be used in the field of separation and purification of gases is disclosed. The compound can be incorporated into a silica gel incorporating polyazacycloalkane structural units for separating a predetermined gas from a mixture of gases. The mixture of gases is brought into contact with a metallated hybrid gel under conditions which make possible the absorption of the gas to be separated, followed by a phase of desorption of the attached gas, and the recovery of the gas.

Abstract: A hydrogenation catalyst for hydrocarbon oils containing aromatic hydrocarbons is provided. The catalyst has a silica-magnesia oxide carrier with a magnesia content within a range from 25 to 50 weight percent calculated in terms of the metal oxide, to which a noble metal selected from among the group VIII metals of the periodic table is added as the active component. In addition, the pore characteristics of the catalyst are such that the volume of pores with a pore size of at least 4 nm as measured by a mercury porosimetry method is within the range from 0.3 to 0.6 ml/g, the volume of pores with a pore size of at least 200 nm as measured by a mercury porosimetry method is no more than 0.05 ml/g, the volume of pores with a pore size from 0.7 to 2 nm as measured by nitrogen adsorption-t-plot method is within the range from 0.2 to 0.3 ml/g, and the volume of pores with a pore size from 2 to 4 nm as measured by nitrogen adsorption-DH method is within the range from 0.15 to 0.2 ml/g.

Abstract: Sorbent compositions for the removal of sulfur from cracked-gasoline and diesel fuels are prepared by the impregnation of a sorbent support comprising zinc oxide, expanded perlite, and alumina with a promotor metal followed by reduction of the valence of the promotor metal in the resulting promotor metal sorbent support composition.