Matches 101 - 150 out of 674 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 >
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6692723 MTT zeolite comprising crystals and crystal aggregates with specific granulometries, and its use as a catalyst for isomerizing straight chain paraffins  
The invention concerns a zeolite with structure type MTT comprising MTT zeolite crystals with a size of less than 5 μm, at least a portion of the MTT zeolite crystals being in the form of MTT...
6689708 Preparation procedure for a zeolite type monometallic catalyst to obtain high octane gasolines through naphtha reforming process  
A process for preparing a reforming catalyst comprises incorporating a group IA alkali metal from an aqueous alkaline solution into a zeolitic material by means of ion exchange to form an alkali...
6685900 Catalyst for purifying the exhaust gases of diesel engines, and process for the preparation thereof  
A catalyst for purifying the exhaust gases of diesel engines, which catalyst contains at least one zeolite and, additionally, at least one of the support oxides aluminum oxide, silicon dioxide,...
6682650 Zeolite catalyst carrier and hydrogenation catalyst using same  
A catalyst support including a zeolite having an Al/Si atomic ratio of 0.01-0.1 and mesopores having a pore diameter in the range of 5-30 nm, and ultrafine particles composited to inside walls of...
6677264 Catalyst for cleaning up the exhaust gases of a diesel engine  
A catalyst for purifying exhaust gases of a diesel engine. The catalyst contains two functional layers superimposed on an inert supporting body, whereby the first layer, which is situated directly...
6670295 Highly active midbarrel hydrocracking catalyst and the preparation thereof  
The present invention relates to a highly active midbarrel hydrocracking catalyst and a process for the preparation thereof. The support of the catalyst comprises a modified zeolite-Y, a modified...
6667018 Catalyst-adsorbent for purification of exhaust gases and method for purification of exhaust gases  
A catalyst-adsorbent for purification of exhaust gases, including a monolithic carrier and a catalyst-adsorbent layer formed thereon, the catalyst-adsorbent layer including a catalyst for reduction...
6667267 Hydrocracking processing using a catalyst comprising an IM-5 zeolite and a catalyst comprising an IM-5 zeolite and a promoter element  
The invention concerns a hydrocracking process using a catalyst comprising at least one matrix, an IM-5 zeolite, at least one metal selected from the group formed by metals from group VIB and group...
6660240 Gas processing agent and manufacturing method therefor, gas purification method, gas purifier and gas purification apparatus  
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...
6660675 Noble metal containing hydrogenation catalyst for selective hydrogenation of 1, 4 butynediol to 1, 4 butenediol, and a process for the preparation thereof  
A hydrogenation catalyst of the general formula AB(y)C(z) wherein A is a support comprising of a salt of a Group II A metal or zeolite, B is a noble metal selected from Pt or Pd, y=0.2 to 10%, C is...
6649556 Process for the preparation of agglomerated zeolites X and LSX exchanged with lithium  
Process for preparing zeolites of X type having an Si/Al atomic ratio of ≦1.5 and having exchangeable cations including lithium, trivalent and/or divalent ions, and optionally sodium, potassium,...
6645898 Method for purification of lens gases used in photolithography  
A method and composition for the removal of contaminants in a gas stream used in the contamination sensitive processes of photolithography and metrology are described. The synergistic effect of a...
6635168 Gasoline sulfur reduction catalyst for fluid catalytic cracking process  
The present invention is directed to certain catalyst compositions and processes that are capable of reducing sulfur compounds normally found as part of the gasoline fraction streams of fluid...
6635791 Process for pretreating a catalyst based on an EUO zeolite under severe conditions  
The present invention concerns a process for pretreating a catalyst used in hydrocarbon conversion processes, comprising the following steps: a) pretreating a catalyst containing at least one...
6632964 Process for production of aliphatic aldehyde-acid and/or aliphatic dicarboxylic acid and catalyst for the production  
A process of producing an aliphatic aldehyde-acid (e.g., adipaldehyde-acid) and/or an aliphatic dicarboxylic acid (e.g., adipic acid) comprising oxidizing a cyclic ketone (e.g., cyclohexanone) with...
6632767 Stabilization of molecular sieves by salt addition  
The low stability of some molecular sieves can be overcome during calcination by a solid state reaction between the molecular sieve and a salt. Molecular sieves including zeolites, metal...
6627167 Catalyst for automotive lean-burn engine and process for preparing the same  
The present invention relates to a catalyst for automotive lean-burn engine comprising platinum impregnated on a zeolite support and a process for preparing the same. In accordance with the...
6617276 Hydrocarbon trap/catalyst for reducing cold-start emissions from internal combustion engines  
An active metal, particularly cesium, impregnated hydrocarbon adsorbent, such as zeolite, comprises an improved hydrocarbon trap/oxidizing catalyst for use in effectively adsorbing hydrocarbons...
6613708 Catalyst selectivation  
It has been discovered that catalysts may be modified by depositing an agent derivative from an agent such as an organometallic compound upon them. Such a modification gives a catalyst useful in...
6589901 Exhaust gas purifying catalyst and method of producing same  
An exhaust gas purifying catalyst for exhaust gas discharged from an automotive internal combustion engine. The catalyst comprises a substrate over which a hydrocarbons adsorbing material layer is...
6583081 Method of manufacture of molecular sieves  
Zeolites exchanged with lithium, rubidium, cesium cations and trivalent cations are prepared by first partially, fully or excessively ion-exchanging a sodium-containing zeolite, a...
6576581 Aromatics isomerization using a dual-catalyst system  
This invention is drawn to a catalyst system comprising two or more molecular sieves, including at least one non-zeolitic molecular sieve and one zeolitic aluminosilicate, having specified...
6562749 Process for the preparation of a catalyst or catalyst precursor  
A process for the preparation of a ceramic foam supporting one or more catalytically active components or precursors thereof, which component is active in a form other than an inorganic oxide, the...
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...
6555493 Solid epoxidation catalyst and preparation  
The stability of a noble metal/titanium zeolite catalyst is improved by elevated temperature calcination with an oxygen containing gas; the catalyst is useful in epoxidation involving the reaction...
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...
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...
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...
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...
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...
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...
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...
6514479 EUO zeolite comprising crystals and aggregates of crystals with specific granulometrys and its use as a catalyst in the isomerisation of C8 aromatic compounds  
The invention concerns a zeolite with structure type EUO comprising EUO zeolite crystals with a size of less than 5 μm, at least a portion of the EUO zeolite crystals being in the form of EUO...
6508852 Honeycomb particulate filters  
A honeycomb structure for a diesel engine or an automotive engine where the wall thickness is varied in a controlled manner from the front surface to the back of the honeycomb. One example is...
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...
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...
6492298 Ordinary-temperature purifying catalyst  
An ordinary-temperature purifying catalyst includes an oxide having an oxygen defect introduced by a reduction treatment, and a noble metal loaded on the oxide. For example, the oxide can be at...
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...
6476085 Fischer-Tropsch processes using catalysts on mesoporous supports  
This invention provides a process for producing hydrocarbons. The process involves contacting a feed stream comprising hydrogen and carbon monoxide with a catalyst in a reaction zone maintained at...
6432859 Method of producing exhaust gas purifying catalyst and catalyst produced thereby  
An exhaust gas purifying catalyst contains a NOx absorbing component which comprises at least one kind of element selected from a group of alkaline earth metals, a group of alkaline metals and a...
6433122 method for producing organopolysiloxane  
A method for producing organopolysiloxane comprising (A) polymerizing or increasing the viscosity of straight-chain or cyclic organo(poly)siloxane using an acid-active solid catalyst, (B) adding at...
6423658 Adsorbent with a high macroporosity, usable in a gas adsorption process, especially a PSA process  
A macroporous adsorbent comprising pores having a pore volume (V m ) and a mean pore diameter (d m ) such that: V m ≧1 cc.g −1 and d m ≧1 μm, V m and d m being determined by mercury...
6406614 Method for zeolite platinization  
A catalyst composition containing a zeolite and platinum, and a method of preparing such catalyst composition, are disclosed. The thus-obtained catalyst composition is employed in the conversion of...
6399530 Amorphous silica-alumina, a carrier combination and a hydrocracking catalyst containing the same, and processes for the preparation thereof  
An acidic amorphous silica-amumina has a large specific surface area and a large pore volume. A carrier complex and a hydrotreating catalyst containing acidic amorphous silica-alumina, in...
6362123 Noble metal containing low acidic hydrocracking catalysts  
A hydrocracking catalyst is provided that includes a crystalline molecular sieve material component having a faujasite structure and an alpha acidity of less than 1, preferably 0.3 or less, and a...
6346498 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,...
6333289 Process for activating catalysts for isomerizing aromatic compounds containing eight carbon atoms  
The present invention relates to a process for activating catalysts for isomerizing aromatic compounds containing 8 carbon atoms, the catalysts containing at least one group VIII metal, comprising...
6303530 Preparation of uniformly impregnated extrudate catalyst  
A method for preparing a catalyst having one or more noble metals disposed in a relatively homogeneous distribution on a base which includes an inorganic refractory binder and a zeolite. The method...
6303368 Device for liquid or gas process streams and method of making and using same  
A device for use in processing of a liquid and/or gas stream. The device is made up of a monolithic structure having active powder for treating streams. The structure has an inlet end and an outlet...
6300270 Method of making a zeolite material  
A catalyst composition prepared by a method which comprises incorporating at least one transition metal into a calcined zeolite-silica material, calcining the resulting transition...
Matches 101 - 150 out of 674 < 1 2 3 4 5 6 7 8 9 10 11 12 13 14 >