Matches 1 - 50 out of 178 1 2 3 4 >
Match Document Document Title
7566680 High surface area iron material prepared from a low surface area iron metal precursor  
A method for producing a high surface area iron material starting with a low surface area iron metal is disclosed. The iron material of the present invention has a surface area of at least about...
7538060 Palladium-copper chromite hydrogenation catalysts  
Disclosed are catalysts comprising copper chromite, palladium and lanthanum having hydrogenation activity. The combination of copper chromite with palladium and lanthanum enhances catalyst activity...
7518023 Highly active spherical metal support catalysts  
The invention relates to highly active spherical metal support catalysts with a metal content of 10 to 70% by mass, and a process for their production with the use of a mixture of polysaccharides...
7514387 Reformer and method of making the same  
A reformer comprises a housing; a substrate disposed in the housing, wherein the substrate comprises a stabilized aluminate and a stabilized zirconate; and a catalyst disposed on the substrate.
7498289 Ni catalysts and methods for alkane dehydrogenation  
Catalysts and methods for alkane oxydehydrogenation are disclosed. The catalysts of the invention generally comprise (i) nickel or a nickel-containing compound and (ii) at least one or more of...
7384884 Catalyst preparation method  
This invention relates to a method to prepare a supported catalyst system comprising preparing a combination comprising 1) a first supported catalyst system comprising a support, an activator and a...
7335410 Composition and process for manufacturing polyester  
The invention relates to a composition suitable for catalysis in a process for the manufacture of polyester containing as Component I a carrier substance on which catalytically effective metal...
7271126 Catalyst for the dehydrogenation of ethyl benzene to STYRENE prepared with a high purity iron precursor  
A method for producing a catalyst for use in the dehydrogenation of ethylbenzene to styrene is disclosed. The catalyst of the present invention comprises a high purity metal and at least one...
7220696 Solid titanium catalyst component for olefin polymerization, catalyst for olefin polymerization, and process for olefin polymerization  
Disclosed is a catalyst for olefin polymerization comprising [I] a solid titanium catalyst component [S] comprising titanium, magnesium, halogen and an electron donor (b), which is obtained by...
7199077 Fischer-tropsch catalyst prepared with a high purity iron precursor  
A Fischer-Tropsch catalyst comprising iron and at least one promoter is prepared via a method which comprises the preparation of a high purity iron precursor and which uses a nominal amount of...
7169864 Metallocene catalysts, their synthesis and their use for the polymerization of olefins  
A process for the preparation of a catalyst system includes the steps of combining a support material with a first composition which includes at least one aluminoxane in a first solvent to provide...
7094724 Catalytic solid supported on calcined hydrotalcite for olefinic polymerisation  
Catalyst solid for olefin polymerization comprising A) at least one calcined hydrotalcite and B) at least one organic transition metal compound, and also a catalyst system comprising the...
7015169 Catalyst systems of the ziegler-natta type and their preparation  
The present invention relates to catalyst systems of the Ziegler-Natta type, to a process for preparing them, to their use for the polymerization of olefins and to ethylene copolymers which can be...
6989347 Catalysts for the oxidation of unsaturated aldehydes to produce carboxylic acids and methods of making the same  
A catalyst composition for the production of carboxylic acids by the oxidation of the corresponding unsaturated aldehydes, and methods for making and using the catalyst compositions. The catalysts...
6982236 Process to polymerize olefins  
This invention relates to a method to prepare a supported catalyst system comprising preparing a combination comprising 1) a first supported catalyst system comprising a support, an activator and a...
6964936 Method of making maximally dispersed heterogeneous catalysts  
A method of making a catalyst with monolayer or sub-monolayer metal by controlling the wetting characteristics on the support surface and increasing the adhesion between the catalytic metal and an...
6949489 Solid supported catalyst usable for the polymerization of conjugated dienes, process for the preparation thereof and a process for the polymerization of conjugated dienes using this catalyst  
The present invention relates to a solid supported catalyst usable for the polymerization of conjugated dienes, to a process for the preparation of said catalyst and to a process for the...
6936667 Polymerization catalyst compositions and processes to produce polymers and bimodal polymers  
A process to produce a first catalyst composition is provided. The process comprises contacting at least one first organometal compound and at least one activator to produce the first catalyst...
6924343 Olefin polymerization catalyst component, its preparation and use  
A process for polymerizing olefins using a high activity catalyst. The catalyst utilize in the present process has a good balance in activity and can be used to carry out ethylene polymerization at...
6924248 Catalyst system for carrying out olefin polymerization comprising a calcined hydro-talcite serving as a supporting material  
Catalyst system for olefin polymerization comprising A) at least one calcined hydrotalcite, B) at least one organic transition metal compound, C) optionally one or more cation-forming compounds...
6921734 Titanocene complexes and its catalyst for preparing syndiotactic polystyrene  
The present invention relates to a titanocene complex and a catalyst comprising the same and an alkylaluminoxane for preparing syndiotactic polystyrene. The catalyst is applicable to the industrial...
6861487 Catalyst precursor for the polymerization of olefins and polymerization process using the same  
The present invention relates to a catalyst precursor for homo- or copolymerization of olefins comprising a metallocene compound, a magnesium containing compound and a thermoplastic polymer...
6818584 Process for preparing a Ziegler-Natta catalyst  
Especially homogeneous supported Ziegler-Natta catalysts may be prepared in a simple one reaction vessel process from a magnesium hydrocarbyloxy starting material which is soluble in a hydrocarbon...
6803430 Polymerization process for improved reactor performance of metallocenes  
The present invention relates to a process for polymerizing olefin(s) in the presence of metallocene-type catalyst compound, an activator and an inorganic oxide support, a Group 13 containing...
6800580 Method for producing an improved catalyst for homo-and co-polymerization of olefin  
The present invention relates to a solid complex titanium catalyst for homo-polymerization and co-polymerization of α-olefin, obtained by (i) producing a solution of a magnesium compound by...
6797839 Multi-metal oxide materials with a two-phase structure  
Multimetal oxide materials containing molybdenum, vanadium, antimony, one or more of the elements W, Nb, Ta, Cr and Ce and nickel and, if required, one or more of the elements Cu, Zn, Co, Fe, Cd,...
6794539 Method for producing multiple-phase multi-metal oxide materials  
In a process for preparing a multiplephase multimetal oxide composition comprising Mo, V, Cu and, if desired, further elements, at least one phase is preformed separately and dispersed in a...
6777571 Mixed metal oxide catalyst  
A catalyst comprising a mixed metal oxide is useful for the vapor phase oxidation of an alkane or a mixture of an alkane and an alkene to an unsaturated carboxylic acid and for the vapor phase...
6762145 Method of making a catalyst for polymerization and co-polymerization of ethylene  
The present invention relates to a catalyst for polymerization and co-polymerization of ethylene. More particularly, the present invention relates to a solid titanium catalyst containing magnesium,...
6750373 One-step production of 1, 3-propanediol from ethylene oxide and syngas with a cobalt-iron catalyst  
Disclosed is a new catalyst composition comprising a bimetallic Co—Fe catalyst, optionally complexed with a ligand selected from a N-heterocycle, phosphine, or porphorine ligand, that provides a...
6740769 Molybdenum-bismuth-iron-containing metal oxide catalysts for fluidized layer, method for preparation thereof, and use thereof  
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...
6696379 Supported modified alumoxane catalyst activator  
A supported catalyst composition comprising: A1) a mixture of aluminum containing Lewis acids of the formulas: [(—AlQ 1 —O—) z (—AlAr f —O—) z′ ] and (Ar f z″ Al 2 Q 1 6−z″ ) ...
6696388 Gel catalysts and process for preparing thereof  
A gel composition substantially contained within the pores of a solid material for use as a catalyst or as a catalyst support in dehydrogenation and dehydrocyclization processes.
6632772 Method of coating a catalyst to a support for use in acrolein oxidation  
A method of coating a catalyst to a support for use in acrolein oxidation reaction. Metallic salt components of the catalyst including molybdate, vanadate and tungstate are dissolved in a liquid to...
6537942 Olefin polymerization catalyst and process for preparing polypropylene and propylene block copolymer  
Olefin polymerization catalyests are formed from: (I-2) a contact product obtained by contacting (A) a solid titanium catalyst component, (B) an organometallic compound catalyst component, and (D)...
H002060 Cyclobutyl silanes for catalysts useful for making highly isotactic olefin polymers  
One aspect of the present invention relates to a catalyst system for use in olefinic polymerization, containing a solid titanium catalyst component prepared by contacting a titanium compound and a...
6486274 Hydrogen response Ziegler-Natta catalyst for narrowing MWD of polyolefin, method of making, method of using, and polyolefins made therewith  
A Ziegler-Natta type catalyst having an improved hydrogen response provides for narrowing of the MWD of resulting polyolefins polymerized using such catalyst, with such catalyst generally made by...
6410475 Catalyst intended for the polymerization of olefins, process for its manufacture and use  
The olefin polymerization catalyst comprises a supported transition metal, magnesium and halogen; the support comprises aluminum phosphate and at least one oxide of silica or alumina. The catalyst...
6395669 Catalyst component and system  
A catalyst component formed by the steps of contacting a transition metal-containing metallocene of a transition metal of Group 4, 5 or 6 of the Periodic Table of the Elements with silica or an...
6384161 Method and catalyst system for producing polyolefins with broadened molecular weight distributions  
The present invention provides a process for preparing a supported metallocene catalyst system that can be used to catalyze formation of polyolefins having a wide molecular weight range. In...
6368995 Solid catalysts for the polymerization of olefins and process for the production of olefin polymers therewith  
A solid catalyst for olefin polymerization, obtained by reacting a least one of a hydropolysiloxane compound, having the formula R 1 a H b SiO (4−a−b)/2 , a silane compound of formula R 2 c...
6331501 Catalyst for α-olefin polymerization and process for producing α-olefin polymer  
A catalyst for α-olefin polymerization obtained by contacting (A) a solid catalyst component containing a titanium compound which is obtained by treating a solid product obtained by contacting an...
6291385 Catalyst for polymerization or copolymerization of olefin  
The present invention relates to a catalyst for polymerization or copolymerization of an olefin. The catalyst is produced by first reacting a mixture of a magnesium compound and an aluminum...
6239058 Process for activating a metallocene catalyst supported on silica  
The invention provides a process for commercial production of syndiotactic polyolefins using a metallocene catalyst supported on silica treated with MAO. The invention includes contacting the...
6235671 Heterogeneous metallocene catalyst  
A heterogeneous catalyst for olefin polymerization is prepared by spray drying a mixture of a metallocene catalyst, a cocatalyst and a hydrotalcite. It Preferred hydrotalcites are...
6221986 Process for converting ethylene to light alpha olefins  
A process for producing light alpha olefins by ethylene oligomerisation in contact with a catalyst produced by mixing a zirconium compound with an organic compound selected from the group formed by...
6177376 Process for preparing a metallocene catalyst system  
The present invention relates to a process for preparing a metallocene catalyst system, which comprises reacting a metallocene starting compound in a solvent with a compound capable of transferring...
6174971 Ziegler-natta catalysts for olefin polymerization  
A new synthesis of a Ziegler-Natta catalyst uses a multi-step preparation which includes treating a soluble magnesium compound with successively stronger chlorinating-titanating reagents. The...
6153551 Preparation of supported catalyst using trialkylaluminum-metallocene contact products  
The supported catalyst disclosed herein is a contact product of two components. One component is the contact product of silica containing hydroxyl groups and alumoxane. This second component is the...
6111038 Process for preparing solid titanium catalyst component for olefin polymerization and process for preparing polyolefin  
The present invention intends to provide a process for preparation of a solid titanium catalyst component for an olefin polymerization excellent in polymerization activity per unit catalyst, and a...
Matches 1 - 50 out of 178 1 2 3 4 >