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8137760 |
Nanocrater catalyst in metal nanoparticles and method for preparing the same
Disclosed are a nanocrater catalyst in metal nanoparticles with a nanocrater form of hole structure in center of the catalyst which is useful for manufacturing nano-sized materials and/or articles...
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8118898 |
Spinous silica-based sol and method of producing the same
The present invention provides a sol of spinous silica-based particles in which silica-based particles having peculiar forms, spinous forms are dispersed in a solvent. The spinous silica-based...
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8025846 |
Process for introducing a portion withdrawn from at least one production charge of annular coated catalysts K into a reaction tube of a tube bundle reactor
A process for introducing annular coated catalysts K into a reaction tube of a tube bundle reactor, in which adhering pairs of annular coated catalysts K formed in the preparation of the annular...
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7977523 |
Catalyst and process for preparing isoolefins
A catalyst, useful in the preparation of isoolefins and containing 0.1 to 20% by mass of an alkali metal oxide, an alkaline earth metal oxide and mixtures thereof; 0.1 to 99% by mass of aluminum...
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7803266 |
Doped spherically-shaped supported catalyst and process for hydrotreating and hydroconverting metal-containing oil fractions
A catalyst and process for hydrotreating and/or hydroconverting heavy metal-containing hydrocarbon feeds, said catalyst comprising a support in the form of beads based on alumina, at least one...
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7781370 |
Process for producing spherical activated carbon
A spherical activated carbon is produced from a starting pitch obtainable from a heavy hydrocarbon oil, such as petroleum tar, coal tar or ethylene, through a moderate process. The starting pitch...
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7666807 |
Hollow porous-wall glass microspheres for hydrogen storage
A porous wall hollow glass microsphere is provided having a diameter range of between 1 to 200 microns, a density of between 1.0 to 2.0 gm/cc, a porous-wall structure having wall openings defining...
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7592291 |
Method of fabricating a catalytic structure
A precursor to a catalytic structure comprising zinc oxide and copper oxide. The zinc oxide has a sheet-like morphology or a spherical morphology and the copper oxide comprises particles of copper...
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7537746 |
Process and apparatus for producing inorganic spheres
A process for producing inorganic spheres, which comprises injecting an aqueous liquid containing an inorganic compound into a laminar flow of an organic liquid which runs at a flow rate of from...
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7538069 |
Spherical active carbon
The invention relates to spherical active carbon having the following pore size distribution: a) 1.2 1.7 nm: 20-50%, b) 1.7 2.1 nm: 20-50%, c) 2.1 2.5 nm: 10-25%, d) 2.5 2.9 nm: 3-15%, e) 2.9 3.3...
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7442365 |
Process for preparing molecular sieve beads
A process for preparing beads of various compositions has been developed. The process involves preparing a reaction mixture of sources of framework elements of a molecular sieve. The reaction...
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7211233 |
Method of preparing granules
A method of preparing spherical pellets from a slurry comprising a ceramic powder, a solvent, and any desired additives, by means of a drop-generating orifice to which said slurry is fed is...
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7160830 |
Process for the preparation of catalyst microspheres
The present invention relates to a process for the preparation of catalyst particles with a particle diameter in the range 20–2000 microns involving the steps of agitating at least two dry c...
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6878668 |
Process for manufacture of an attrition resistant catalyst
A method for manufacturing of an attrition resistant vanadium/phosphorous oxide catalyst involving forming an aqueous slurry comprising; vanadium/phosphorous oxide catalyst or vanadium/phosphorous...
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6747180 |
Metal catalysts
Metal catalysts comprising hollow forms or spheres are made of metal alloy and optionally activated. The metal catalysts can be used for the hydrogenation, dehydrogenation, isomerization reductive...
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6495488 |
Production of spherical catalyst carrier
The present invention provides a process for producing spherical catalyst carrier of silica, silica-alumina composition, zirconia-alumina composition, titania-alumina composition, boria-alumina...
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6388028 |
Components and catalysts for the polymerization of olefins
The present invention relates to spherical solid catalyst components for the polymerization of olefins, comprising a titanium compound, supported on a magnesium halide, containing more than one...
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6350422 |
Sorbent compositions
A process for removing hydrogen sulfide from a fluid stream by contacting a hydrogen sulfide-containing stream with a sorbent composition wherein said sorbent composition is produced by mixing at...
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6268443 |
Process for producing a solid catalyst component for olefin polymerization and a process for producing an olefin polymer
A solid catalyst component for olefin polymerization superior in shatter resistance and narrowness of particle size distribution, is provided, which component is prepared by spraying a mixture of...
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6107238 |
Process for manufacture and use of improved attrition resistant catalyst
A method for manufacturing of an improved attrition resistant catalyst having an oxide-rich surface layer involving forming a slurry comprising; catalyst, catalyst precursor or catalyst support...
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6106798 |
Vanadium oxide nanoparticles
Vanadium oxide nanoparticles were produced with vanadium in a variety of oxidation states and with different crystalline lattice structures. These particles preferably have an average diameter of...
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6074983 |
Method for making spherical adsorbent particles
The invention is directed to an unsintered spherical adsorbent particle composition having high mechanical strength and controlled pore size distribution, comprising finely divided silica hydrogel...
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5965476 |
Silica/zeolite composite materials in spherical form and process for their preparation
The present invention relates to silica/zeolite composite materials in spherical form and the process for their preparation which occurs by the dispersion of submicronic particles of titanium...
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5939351 |
Catalysts and catalyst carriers obtained by tableting
Catalysts and catalyst carriers, in the form of granules having a definite geometric form, characterized by porosity values such that at least 70% of the volume of the pores have a radius...
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5935889 |
Catalyst and method of preparation
Catalyst particles are prepared by coating a core particle, which is usually catalytically inert with respect to the intended chemical reaction, in a fluidized bed coating apparatus. The coating...
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5879647 |
Method for the preparation of fine globular particles of yttrium oxide
An improvement is proposed in the so-called urea method for the preparation of fine particles of yttrium oxide, according to which, while an aqueous reaction mixture containing a water-soluble...
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5821186 |
Method for preparing hydrous titanium oxide spherules and other gel forms thereof
The present invention are methods for preparing hydrous titanium oxide spherules, hydrous titanium oxide gels such as gel slabs, films, capillary and electrophoresis gels, titanium monohydrogen...
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5798309 |
Process for preparing a poly-1-olefin
Process for preparing a poly-1-olefinBy means of a highly active spherical Ziegler catalyst based on a dialkylmagnesium, spherical polymers can be obtained in the polymerization of alpha-olefins. A...
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5750459 |
Sol-gel process for obtaining pure and mixed oxide zirconia spheres, microspheres and washcoats, useful as catalysts or catalyst supports
This invention relates to a process for obtaining pure or mixed oxide zirconia spheres, microspheres or washcoats consisting of: preparing a zirconium solution in water at a concentration, formally...
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5731261 |
Process for the preparation of mixed porous silica-alumina oxides in a spherical form
The present invention relates to a process for the preparation of mixed porous oxides with a spherical morphology and the oxides themselves thus obtained.This process consists in emulsifying, in an...
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5618770 |
Process for the production of powder catalysts
Magnesium chloride, titanium chloride and at least an electron donor are introduced in a plasma torch. These chlorides being in solution or in suspension in a liquid that can be an electron donor....
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5523500 |
Mass catalysts based on chromium and nickel oxides and their application to the fluorination of halogenated hydrocarbons
The invention relates to mass catalysts based on chromium and nickel oxides, obtained from a sol of chromium and nickel hydroxides.These catalysts, in which the Ni/Cr atomic ratio is between 0.05...
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5507956 |
Abrasion-resistant carrier catalyst
The description relates to an abrasion-resistant carrier catalyst for removing the nitrite and/or nitrate content of polluted water with selective nitrogen formation. The catalytically active metal...
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5500396 |
Process to make small, discrete, spherical adducts
A process to make a small, discrete, spherical magnesium dihalide alcohol adduct is provided. This process comprises: contacting a magnesium dihalide and an alcohol in a high-viscosity liquid that...
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5468558 |
Process for preparing fracture-resistant sol/gel particles
A process for preparing fracture-resistant sol/gel particles which contain silicon dioxide, in which a highly disperse filler is added to the aqueous alkali metal silicate solution and/or the...
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5464593 |
Process for producing spherical zeolite catalyst and apparatus for producing the same
A process for producing a spherical zeolite catalyst is disclosed, which comprises dropping a zeolite-containing alumina sol into a surfactant-containing oil phase from a dropping opening directly...
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5453260 |
Amorphous silica or silica-alumina spherical particles and process for preparation thereof
Disclosed are amorphous silica or silica-alumina spherical particles composed of X-ray diffractometrically substantially amorphous silica or silica-alumina, wherein individual particles have a...
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5403804 |
Initiator suspension, their preparation and use
An initiator suspension for use in the suspension polymerization of ethylenically unsaturated monomers is prepared by (a) heating the initiator to its melting point; (b) finely dividing the...
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5358920 |
Dehydrogenating catalyst for saturate hydrocarbons
A dehydrogenating catalyst for saturated hydrocarbons comprising platinum, tin, sodium and τ-alumina. The support of the catalyst is a large pore diameter τ-Al2 O3 with dual pore diameter d...
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5302566 |
Process for preparing attrition resistant catalysts
A process is described for preparing attrition resistant catalyst, particularly vanadium/phosphorus oxide catalyst, having an oxide rich surface layer. The oxide rich surface layer is obtained from...
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5256386 |
Method for preparation of silica particles
Silica particles which are substantially spherical, have a particle size of 1 to 100 μm, a very narrow pore size distribution and a low alkali metal content. The particles can be prepared by ...
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5236683 |
Amorphous silica spherical particles
Disclosed are amorphous silica or silica-alumina spherical particles composed of X-ray diffractometrically substantially amorphous silica or silica-alumina, wherein individual particles have a...
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5232883 |
Process for obtaining monodisperse microspheroidal particles, microspheroidal silica particles of high specific surface, and catalysts supported on these particles
Process for obtaining monodisperse microspheroidal particles, comprising spraying an electrostatically charged gellable liquid material through a spraying orifice and into a chamber, so as to...
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5227239 |
Production of hollow aerogel microspheres
A method is described for making hollow aerogel microspheres of 800-1200 μ diameter and 100-300 μ wall thickness by forming hollow alcogel microspheres during the sol/gel process in a catalytic a...
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5196267 |
Process for coating silica spheres
Silica microspheres formed by hydrolysis of a silica precursor having a mean diameter in the range of about 0.1 to 10 μm are provided with a thin surface layer, often a monolayer, of a metal to ...
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5139980 |
Method for production of inorganic oxide particles
A method for the production of inorganic oxide particles by a procedure comprising the steps of dispersing inorganic oxide particles as seed particles in a water-containing alcohol solution thereby...
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5134103 |
Process for making magnesium oxide spheres
A method to prepare spherical particles comprising magnesium oxide and magnesium hydroxide, wherein said magnesium hydroxide acts as a binder and no extraneous binder is present.
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5128291 |
Porous titania or zirconia spheres
Porous titania or zirconia spheres having a particle diameter of about 1 to 100 microns, a pore volume of about 0.1 to 1 cc/g, and a pore diameter in the range of about 10 to 5,000 Angstrom units...
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5114895 |
Alumina clay compositions
This invention relates to a composition, a method of preparing the composition and a catalyst using the composition. The composition consists essentially of a layered clay homogeneously dispersed...
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5104632 |
Method of making thin silica flakes
Hydrated sodium silicate particles can be expanded by heat to form thin-walled bubbles that can be broken, neutralized, washed and dried to provide hydrated silica flakes. These flakes can be mixed...
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