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| Number | Title | Issue Date |
| 6566300 | Titania photocatalyst and its preparing method The present invention relates to a novel titania photocatalyst and its manufacturing method. More specifically, the present invention is to provide the quantum-sized novel titania photocatalyst prepared the steps comprising: (a) titanium tetraisopropoxide... | 05/20/2003 |
| 6565826 | Method of preparing zeolite single crystals Method of preparing zeolite single crystals comprising the step of: applying a synthesis gel with zeolite precursor composition within pore system and on surface of a particulate matrix material having a predetermined pore structure and particle size; sub... | 05/20/2003 |
| 6566293 | Catalyst composition with high efficiency for the production of light olefins The present invention is directed to a catalyst composition for FCC which has high efficiency in the production of light olefins while maintaining the bottoms conversion. The catalyst composition is prepared by: a) ex situ activating an olefin-selective zeolit... | 05/20/2003 |
| 6562748 | Process for the manufacture of chemical absorbents and chemical absorbent formulations A soda lime formulation comprises calcium hydroxide in admixture with sodium hydroxide and potassium hydroxide and water, and further comprises a zeolite such as sodium aluminium silicate. The formulation has improved mechanical strength and may be prepar... | 05/13/2003 |
| 6558647 | Microporous and mesoporous silicoaluminate solid, process for preparation, use as a catalyst and for hydrocarbon conversion The invention relates to an acidic silicoaluminate solid that has a microporous zeolitic phase that is characterized by at least one infrared band between 400-1600 cm-1, an organized mesoporosity that is characterized by the presence of at least one X-dif... | 05/06/2003 |
| 6555492 | Zeolite/alumina catalyst support compositions and method of making the same A catalyst for purifying an exhaust gas to remove nitrogen oxides, carbon monoxide and hydrocarbons from exhaust gas comprising a zeolite having a silica/alumina molar ratio of greater than 55, and at least 1.5%, by weight, each of nickel and cobalt incor... | 04/29/2003 |
| 6548440 | Synthesis of attrition-resistant heterogeneous catalysts using templated mesoporous silica The present invention relates to catalysts in mesoporous structures. In a preferred embodiment, the invention comprises a method for encapsulating a dispersed insoluble compound in a mesoporous structure comprising combining a soluble oxide precursor, a s... | 04/15/2003 |
| 6548439 | High strength and high surface area catalyst, catalyst support or adsorber compositions Zeolite based material and a method for making the zeolite, comprising a zeolite having a silica/alumina ratio of at least 300 and a surface area of 250 m2 /g and no greater than about 20 parts, by weight, of a silica binder. The combination of... | 04/15/2003 |
| 6541408 | Zeolite catalysts having stabilized hydrogenation-dehydrogenation function A zeolite catalyst suitable for use in shape-selective hydrocarbon conversion processes. The catalyst is modified by incorporation therein of a hydrogenation-dehydrogenation functional metal, followed by gradient selectivation with an organosilicon compou... | 04/01/2003 |
| 6537946 | Exhaust gas purifying catalyst In an exhaust gas purifying catalyst, an acid material with a high affinity with respect to an absorbing agent is dispersed and mixed in a catalyst layer, to which the absorbing agent is added, or a layer of the acid material is formed inside the catalyst... | 03/25/2003 |
| 6534661 | Integrated process and dual-function catalyst for olefin epoxidation The invention discloses a dual-functional catalyst composition and an integrated process for production of olefin epoxides including propylene oxide by catalytic reaction of hydrogen peroxide from hydrogen and oxygen with olefin feeds such as propylene. T... | 03/18/2003 |
| 6534439 | Catalyst for reducing nitrogen oxides in oxidizing and reducing atmospheres A catalyst for reducing nitrogen oxides in oxidizing and reducing atmospheres which contains iridium on a support material. Silicon dioxide or a dealuminized zeolite in the acid H form with a modulus of more than 20, preferably more than 100, or mixtures ... | 03/18/2003 |
| 6531106 | Selective removing method of carbon monoxide According to the present invention, provided is a method of selectively removing carbon monoxide, comprising the steps of preparing a catalyst bed capable of selectively oxidizing carbon monoxide and including a plurality of catalyst layers arranged in se... | 03/11/2003 |
| 6531051 | Catalyst that contains a zeolite that is high in an element of group VB and its use in hydrorefining and hydrocracking of hydrocarbon fractions The invention relates to a catalyst that contains at least one matrix, at least one zeolite and at least one element that is deposited on the catalyst or contained in the matrix and selected from the group that is formed by the elements of groups VIB, VII... | 03/11/2003 |
| 6530974 | Method for the separation of molecules in the gas phase by adsorption by means of agglomerated solid inorganic adsorbents with a narrow and calibrated mesopore distribution The present invention relates to a novel family of inorganic solids with a narrow and calibrated mesopore distribution which are agglomerated with a binder; these solids can advantageously be used as adsorbents for the industrial separation of gas-phase c... | 03/11/2003 |
| 6531601 | Molded catalyst for production of triethylenediamine, method for its production, and method for producing triethylenediamine A molded catalyst for production of triethylenediamine, wherein (1) the main components are silica and crystalline aluminosilicate, (2) the silica is amorphous, and the content of the silica is from 5 to 70 wt %, (3) the molar ratio of silica to alumina i... | 03/11/2003 |
| 6528032 | Selective removing method of carbon monoxide According to the present invention, provided is a method of selectively removing carbon monoxide, comprising the step of preparing a catalyst bed capable of selectively oxidizing carbon monoxide and including a plurality of catalyst layers arranged in ser... | 03/04/2003 |
| 6528031 | Method for preparing noble metal-supported zeolite catalyst for catalytic reduction of nitrogen oxide The present invention provides a method for preparing a catalyst for the reduction of nitrogen oxides by the use of natural gas as a reducing agent in an excess oxygen atmosphere, which comprises of filling zeolite with an organic compound having molecula... | 03/04/2003 |
| 6528447 | Process for the preparation of a catalyst composite A process for preparing a hydrocarbon conversion catalyst for use in a Fluid Catalyst Cracking (FCC) unit includes the steps of preparing a modified alumina-silica composite by reacting alumina with an acid to obtain an acidified alumina, aging the acidif... | 03/04/2003 |
| 6524991 | Process for the direct oxidation of olefins to olefin oxides A process and catalyst for the direct oxidation of an olefin having three or more carbon atoms, such as propylene, by oxygen to the corresponding olefin oxide, such as propylene oxide. The process involves contacting the olefin with oxygen under reaction ... | 02/25/2003 |
| 6524984 | Process for preparing bound zeolites A process is described for the preparation of zeolitic catalysts in the form of microspheres, comprising zeolite and oligomeric silica, characterized by a high mechanical resistance. The process consists in subjecting to rapid drying the suspension, to wh... | 02/25/2003 |
| 6524470 | Catalyst comprising beta zeolite and promoter element for hydrocracking A catalyst comprising, in weight % with respect to the total catalyst weight 0.1% to 60% (expressed as the % by weight of oxide) of at least one hydro-dehydrogenating metal selected from the group formed by group VIB and VIII metals; 0.1% to 99% of at lea... | 02/25/2003 |
| 6521562 | Preparation of molecular sieve catalysts micro-filtration A method of making a molecular sieve catalyst by preparing a catalyst slurry containing molecular sieve, binder and a matrix material and directing the slurry to a forming unit. The catalyst slurry is prepared by using a microfiltration process whereby th... | 02/18/2003 |
| 6518470 | Halogen-containing catalyst and process for the preparation thereof The present invention is directed to a halogen-containing catalyst which contains one or more halogen components and in which the halogen amount distribution in the catalyst is uniform, and a process for preparing a halogen-containing catalyst which compr... | 02/11/2003 |
| 6518213 | Exhaust gas purifying catalyst and process for preparing the catalyst An exhaust gas purifying catalyst comprises a hydrocarbon adsorbent layer and a metal-based catalyst layer on a monolithic support. The catalyst contains zeolite in the underlying hydrocarbon adsorbent layer and contains noble metals such as palladium, pl... | 02/11/2003 |
| 6514896 | Catalyst composition and a process of using thereof A process for making an improved zeolite catalyst composition comprising acid-treating a zeolite to provide an acid-treated zeolite, ion-exchanging the ions of such acid-treated zeolite with ions of zinc and at least one other metal in the presence of an ... | 02/04/2003 |
| 6511933 | Catalyst for cracking heavy oil A catalyst composition for the cracking of heavy oil, which has high cracking activity for heavy components in the heavy oil and features reduced deposition of coke. The catalyst composition is comprised of a zeolite, a mixed metal oxide, clay and a metal... | 01/28/2003 |
| 6506703 | Method for depositing catalyst metals into zeolite to produce hydrocarbon processing catalyst An ion exchange method is provided for loading and uniformly distributing noble metals into a catalyst substrate comprising a zeolite to make a monofunctional, non-acidic reforming catalyst. The catalyst substrate is contacted with an aqueous loading solu... | 01/14/2003 |
| 6503862 | Exhaust gas purifying catalyst An exhaust gas purifying catalyst is constructed by laminating sequentially a first layer containing alumina, a second layer containing hydrocarbon adsorbent, and a third layer containing catalytic components on a monolithic support in which a cell sectio... | 01/07/2003 |
| 6503863 | Heat treating a molecular sieve and catalyst Disclosed is a method of heat treating a molecular sieve. The method comprises providing a template-containing molecular sieve, heating the molecular sieve under conditions effective to remove a portion of the template from the molecular sieve, and coolin... | 01/07/2003 |
| 6500997 | Catalysts and processes for the conversion of aromatic hydrocarbons and uses thereof in the production of aromatic hydrocarbons The present invention relates a catalyst for the conversion of aromatic hydrocarbons, comprising by weight 20 to 90 parts of a crystalline aluminosilicate zeolite with a SiO2 /Al2 O3 molar ratio of 10 to 100, 0.05 to 10 pa... | 12/31/2002 |
| 6500233 | Purification of p-xylene using composite mixed matrix membranes Composite membranes capable of separating p-xylene from mixtures including p-xylene and m-xylene, and processes for purifying p-xylene using the membranes, are disclosed. The membranes are polymer membranes with a thickness of between about 10 and 1000 mi... | 12/31/2002 |
| 6500992 | Synthesis of methyl tertiary butyl ether from methanol and isobutene using aluminum-fluoride-modified zeolite catalysts This invention concerns an improved and novel catalyst for preparing methyl tertiary butyl ether (MTBE). This invention is advantageous in that the reaction of methanol and isobutene takes place such that the catalysts exhibit levels of isobutene conversi... | 12/31/2002 |
| 6498279 | Ultrastable zeolite Y-containing hydrogenation catalyst and process for hydrogenating aromatic and/or heterocyclic aromatic compound-containing feed A hydrogenation catalyst including a carrier of ultrastable zeolite Y modified with at least one heavy rare earth element selected from ytterbium, gadolinium, terbium and dysprosium. At least one catalytic metal selected from palladium and platinum is sup... | 12/24/2002 |
| 6489259 | Mixed zeolite NOx catalyst A multiple zeolite catalyst mixture for purifying exhaust gases from an internal combustion engine, comprising: a first NO2 to N2 to conversion catalyst component; a second O3 conversion catalyst component; a third HC conv... | 12/03/2002 |
| 6489258 | Synthesis and application of vapor grafted porous materials This invention provides an article, compositions, methods of making and uses of vapor-deposited metal compounds immobilized on porous substrates. The substrate is a porous substrate having an average pore size of at least about 8 Å and a surface area of ... | 12/03/2002 |
| 6486086 | Simplified methods of manufacturing titanium silicate membranes A simplified method of forming a porous crystalline titanium silicate membrane comprises preforming a mass of titanium dioxide particles into a consolidated preform such as by pressing into a thin film, and contacting the thin film of titanium dioxide wit... | 11/26/2002 |
| 6486372 | Catalyst based on dealuminated mordenite containing at least one metal from groups VI, VII or VIII, and its use for dismutation and/or transalkylation of aromatic hydrocarbons A catalyst for transforming aromatic hydrocarbons, preferably for dismutation of toluene to produce benzene and xylenes and transalkylation of toluene and aromatic compounds containing at least 9 carbon atoms per molecule to produce xylenes, contains 40% ... | 11/26/2002 |
| 6486373 | Shape selective zeolite catalyst and its use in aromatic compound conversion A shape-selective catalyst comprises a synthetic porous crystalline material having the structure of ZSM-5 and a composition involving the molar relationship: X2 O3 :(n)YO2, wherein X is a trivalent element, such as alumin... | 11/26/2002 |
| 6472016 | Membrane comprising a porous carrier and a layer of a molecular sieve and its preparation The invention is directed to a method for preparing a membrane comprising a homogeneous porous carrier, on which a layer of a molecular sieve is deposited, comprising the following steps (i) preparing an inert solution and a precursor solution of the mole... | 10/29/2002 |
