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8883668 Phosphorus modified molecular sieves, their use in conversion of organics to olefins  
The present invention is a phosphorous modified zeolite (A) made by a process comprising in that order: selecting a zeolite with low Si/Al ratio (advantageously lower than 30) among H+ or...
8710271 Process for the production of an acylation catalyst  
The present invention relates to a process for the preparation of a zeolitic material having a BEA framework structure comprising the steps of: (i) providing one or more zeolitic materials having...
8652437 Method of manufacturing artificial zeolite  
A method of manufacturing an artificial zeolite. The method includes the steps of: heating a waste insulator to form a molten insulator; quenching and pulverizing the molten insulator; and heat...
8568687 Method of manufacturing solid acid catalyst  
A method of manufacturing a solid acid catalyst using industrial waste such as an insulator, optical fiber, and tip material is provided. The raw material contains a template agent, a compound...
8529869 Catalysts and method for the hydroamination of olefins  
The present invention relates to a hydroamination catalyst comprising boron beta zeolites, wherein the hydroamination catalyst is doped with lithium, and also a process for producing it. The...
8524625 Compositions and methods for improving the hydrothermal stability of mesostructured zeolites by rare earth ion exchange  
Compositions and methods for preparing mesostructured zeolites having improved hydrothermal stability. Such mesostructured zeolites can be prepared by subjecting a zeolite to rare earth ion...
8440166 Method of synthesizing a novel absorbent titanosilicate material (UPRM-5)  
A titanium silicate variant named UPRM-5 was prepared using tetraethylammonium hydroxide as a structure-directing agent (SDA). Successful detemplation was achieved via ion exchange with NH4Cl....
8105548 Manufacturing device for zeolite membrane  
A zeolite membrane production apparatus is provided having a reaction container having a support insertion opening for insertion of tubular supports and which houses a reaction solution for...
7892510 Silicon dioxide dispersion  
Stable, aqueous dispersion containing silicon dioxide powder having a hydroxyl group density of 2.5 to 4.7 OH/nm2, which is obtained from a silicon dioxide powder produced by a flame hydrolysis...
7858069 Enhancement of alkylation catalysts for improved supercritical fluid regeneration  
A method of modifying an alkylation catalyst to reduce the formation of condensed hydrocarbon species thereon. The method comprises providing an alkylation catalyst comprising a plurality of...
7794679 Catalyst and method for purification of diesel engine exhaust gas  
The invention provides a catalyst for catalytically reducing nitrogen oxides in diesel engine exhaust gas by use of unburnt carbon contained in the diesel engine exhaust gas as a reducing agent,...
7713513 High silica zeolites: UZM-8HS  
A family of crystalline aluminosilicate zeolites designated UZM-8HS and derived from UZM-8 have been synthesized. The aluminum content of the UZM-8HS is lower than that of the starting UZM-8 thus...
7326401 MWW type zeolite substance, precursor substance therefor, and process for producing these substances  
A process for easily synthesizing a zeolite substance containing an element having a large ionic radius in the framework at a high ratio. This process comprises the following first to fourth...
7323154 Titanosilicate, process for its production, and its use in producing oxidized compound  
A titanosilicate represented by the following compositional formula (1), wherein in the infrared absorption spectrum measured in the dehydrated state, the absorption spectrum has an absorption...
6982074 High silica zeolites: UZM-5HS  
A family of crystalline aluminosilicate zeolites designated UZM-5HS and derived from UZM-5 have been synthesized. The aluminum content of the UZM-5HS is lower than that of the starting UZM-5 thus...
6790433 Methods to improve heteroatom lattice substitution in large and extra-large pore borosilicate zeolites  
The invention, in one embodiment, is a method for preparing crystalline zeolites by (a) contacting a calcined essentially aluminum free borosilicate zeolite with an aqueous acid solution, thereby...
6653396 Process for the preparation of zeolite A for use in formulations based on two-component polyurthane resins  
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...
6521206 Molecular sieve CIT-6  
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...
6475465 Titanium-silicalite molecular sieve and the method for its preparation  
The present invention relates to a titanium-silicalite (TS-1) molecular sieve and the method for preparation of the same, wherein each crystallite of said titanium-silicalite molecular sieve has a...
6468501 Method for heteroatom lattice substitution in large and extra-large pore borosilicate zeolites  
The present invention provides a method for preparing a zeolite having lattice substituted heteroatoms. The method includes: (a) contacting a calcined borosilicate zeolite with an acid, thereby...
6440886 Zeolite beta and its use in aromatic alkylation  
There is disclosed a new form of zeolite beta which shows substantially greater stability and greater catalyst lifetime when used in the alkylation and transalkylation of aromatic compounds. The...
6221835 High density zeolites and their production  
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...
6191323 Process for the reduction of ketones and aldehydes to alcohols using a tin substituted zeolite beta  
A process for the reduction of ketones or aldehydes to alcohols has been developed. The process involves contacting the ketone or aldehyde with a primary or secondary alcohol and a catalyst at...
6165439 Dealuminated NU-86 zeolite and its use for the conversion of hydrocarbons  
The invention concerns a NU-86 zeolite comprising silicon and at least one element T selected from the group formed by aluminium, iron, gallium and boron, preferably aluminium, characterized in...
6063944 Method for preparing lattice-inserted titanium zeolites, and use thereof  
PCT No. PCT/FR96/01209 Sec. 371 Date May 4, 1998 Sec. 102(e) Date May 4, 1998 PCT Filed Jul. 31, 1996 PCT Pub. No. WO97/05060 PCT Pub. Date Feb. 13, 1997A method is provided for preparing fully...
6054113 Method for preparing high silica faujacitic zeolites  
A method for preparing novel zeolitic catalyst compositions having a high Si/Al ratio and a crystallinity of at least about 70%. The method involves cation exchanging an as synthesized faujasite...
6017508 Process of modifying the porosity of aluminosilicates and silicas, and mesoporous compositions derived therefrom  
PCT No. PCT/US96/16104 Sec. 371 Date Apr. 20, 1998 Sec. 102(e) Date Apr. 20, 1998 PCT Filed Oct. 8, 1996 PCT Pub. No. WO97/15528 PCT Pub. Date May 1, 1997A process of modifying the porosity of an...
5968341 Activated silica enriched mazzite, production method and application thereof  
The invention provides an activated silica enriched mazzite having a chemical formula in the anhydrous state, expressed in molar ratios of:a M2/n O; Al2 O3 ; b SiO2 ;with a variation from 0 to...
5968475 Dealuminated IM-5 zeolite  
The present invention relates to a dealuminated IM-5 zeolite and to any catalyst comprising that zeolite which is at least partially in its acid form. The invention also relates to the preparation...
5932361 Ceramic based membranes  
A method of preparing a membrane is disclosed, which includes the step of impregnating an inorganic proton-conductive material into matrices of porous ceramic membranes. The inorganic...
5880053 Method of producing zeolite y  
Y zeolites with an SiO2 /Al2 O3 ratio in the framework of>100 with a high hydrothermal stability and resistance to aqueous, alkaline solutions are produced by treating a Y zeolite with a SiO2 /Al2...
5695736 Tiatanium containing molecular sieve having a zelite beta structure  
A crystalline molecular sieve having a framework structure isomorphous with zeolite beta and containing Si and Ti, but essentially no framework Al, usefully catalyzes olefin epoxidation wherein...
5688484 Non-hydrothermal method of making a titanium-containing zeolite  
A process for producing a titanium-containing zeolite such as TS-1 titanium silicalite is disclosed. A precursor mixture comprising a silica source such as tetraalkylorthosilicate, a titanium...
5601798 Process for preparing zeolite Y with increased mesopore volume  
The mesopore volume in pores of diameters ranging from 2 to 60 nm of zeolite Y materials is increased by the hydrothermal treatment of such zeolites at temperatures above the atmospheric boiling...
5534135 Synthesis of zeolites  
A novel zeolite characterized by a large number of secondary pores, a substantially decreased Lattice Constant of below about 24.19 Å, and a substantially decreased Acid Site Density is attained...
5508019 Dealumination of aluminosilicates  
Crystalline aluminosilicates such as zeolite beta may be readily dealuminated using organic sulfonic acids such as methanesulfonic acid to provide useful catalysts or catalyst precursors. A high...
5451391 Process for the synthesis of a crystalline aluminosilicate enriched in silica, having the structure of mazzite, the aluminosilicate obtained and its use as catalyst for the conversion of hycrocarbons  
Process for the preparation of a crystalline aluminosilicate enriched in silica, having the structure of mazzite, by hydrothermal crystallization of a gel containing sources of silicon, aluminum...
5425934 Dealumination and selective removal of organic material from zeolites  
Disclosed is a method for treating synthetic zeolite to remove organic template material therefrom and concurrently therewith effect dealumination of the zeolite. The method comprises the steps of...
5389357 Modified crystalline aluminosilicate zeolites and process for their preparation  
A process for the manufacture of a modified aluminosilicate zeolite is disclosed which includes contacting a starting zeolite in an aqueous phase with a dealuminating agent at a pH value of lower...
5354719 Method of manufacturing metallosilicates  
A process for preparing a metallosilicate catalyst includes the steps of: forming a mixture of at least one non-alkali metal, a templating agent, and an organic base; adding a silicon additive to...
5310534 Process for dealuminization of the synthetic zeolites of large pores, catalysts and selective organophilic adsorbents containing the dealuminized zeolites obtained according to the process and essentially silicic beta zeolite  
A process is provided for dealuminization of zeolites having large pores, the diameter of the aperture of the pores being greater than or equal to about 0.7 nm and the silica/alumina ratio greater...
5298234 Alumina-silica resin additive  
Disclosed is an alumina-silica resin additive consisting of amorphous alumina-silica particles in which a definite cubic or spherical shape is retained in primary particles and the particle sizes...
5292990 Zeolite composition for use in olefinic separations  
Basically, the present invention is predicated on the discovery that zeolites that have a high silica to alumina ratio, e.g., a ratio of 20 and above, pore diameters of greater than about 5.0Å,...
5268107 Modified clinoptilolite as an ion exchange material  
An ion exchange material for the removal of radioisotope cations such as the cations of caesium and strontium from an aqueous environment containing the radioisotope cation comprises a modified...
5262141 Insertion of silicon into the crystal framework of a zeolite  
Silicon is inserted into the crystal lattice of zeolites containing defect sites by reaction with SiCl4 in the presence of oxygen. It has been found that by initially dehydrating the starting...
5242677 Stable zeolite of low unit cell constant and method of making same  
Y-type zeolites with unit cell constants of less than 24.14 Å are prepared by improving the method of dealumination and aluminum ion exchange. Zeolites with such low unit cell constants have not...
5242676 Selective surface dealumination of zeolites using dicarboxylic acid  
A process for the selective surface dealumination of a zeolite having a Constraint Index greater than 1 by contacting the zeolite with dicarboxylic acid, such as oxalic acid.
5238677 Process for the dealumination of mordenite  
A process for the dealumination of a zeolite having the structure of mordenite by contacting the zeolite with dicarboxylic acid, such as oxalic acid, and steaming. The process is useful for the...
5200168 Process for the dealumination of zeolite Beta  
A process for the dealumination of a zeolite having the structure of zeolite Beta by contacting the zeolite with dicarboxylic acid, such as oxalic acid.
5141737 Iron-containing aluminosilicate  
An iron-containing aluminosilicate and a process for producing the iron-containing aluminosilicate. The iron-containing aluminosilicate has a composition of the formula expressed as oxides: aFe2...

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