|
Match
|
Document |
Document Title |
|
|
7399727 |
Zeolite catalyst and method
A catalyst is formed from a phosphorus-containing ZSM-5-type zeolite. The ZSM-5-type zeolite has a silica/alumina molar ratio of at least 200. The phosphorus-containing ZSM-5-type zeolite also has...
|
|
|
7368410 |
Zeolite catalyst and method of preparing and use of zeolite catalyst
A zeolite catalyst is prepared by treating a zeolite with a phosphorus compound to form a phosphorus-treated zeolite. The phosphorus-treated zeolite is heated to a temperature of about 300° C. or...
|
|
|
7304194 |
Hydrothermal treatment of phosphorus-modified zeolite catalysts
A method of treating a ZSM-5-type zeolite catalyst is carried out by treating a ZSM-5 zeolite catalyst having a silica/alumina mole ratio of at least about 200 with a phosphorus compound. The...
|
|
|
7285511 |
Method of modifying zeolite catalyst
A method of modifying a zeolite catalyst to increase para-xylene selectivity of the zeolite catalyst in toluene methylation reactions is provided. The method includes forming a slurry of a...
|
|
|
7279608 |
Toluene methylation process with increased methanol selectivity
A method of converting methanol to a xylene product is achieved by providing a reactor containing a non-steamed, phosphorus-treated ZSM-5-type zeolite catalyst. The catalyst is contacted with a...
|
|
|
7244869 |
Method of aromatic alkylation
A catalyst for use in aromatic alkylation, such as toluene alkylation with methanol, is comprised of a zeolite with pore size from about 5.0 to about 7.0 Å containing a hydrogenating metal. The...
|
|
|
7196237 |
Method of preparing an alkyl aromatic product
A method of modifying a zeolite catalyst to increase selectivity of the catalyst is achieved by dissolving alumina in a phosphorus-containing acid solution, and treating the zeolite catalyst with...
|
|
|
7105713 |
Preparation of alkyl-aromatic products
A method of modifying a ZSM-5-type zeolite catalyst to increase selectivity of the catalyst for para-isomers in aromatic alkylation reactions is provided. The method includes contacting a...
|
|
|
7084318 |
Toluene methylation process
A method of preparing a xylene product is carried out in a reactor containing a phosphorus-treated ZSM-5-type zeolite catalyst. The method includes initiating a unique start-up of a toluene...
|
|
|
7060864 |
Toluene methylation process
A method of preparing a xylene product is carried out by providing a reactor containing a non-steamed, phosphorus-treated ZSM-5-type zeolite catalyst. The catalyst is contacted with a...
|
|
|
7060644 |
Aromatic alkylation catalyst and method
A catalyst for use in aromatic alkylation, such as toluene alkylation with methanol, is comprised of a zeolite with pore size from about 5.0 to about 7.0 Å containing a hydrogenating metal. The...
|
|
|
6943131 |
Selective zeolite catalyst modification
A method of modifying a zeolite catalyst to increase selectivity of the catalyst is achieved by dissolving alumina in a phosphorus-containing acid solution, and treating the zeolite catalyst with...
|
|
|
6552093 |
Compositions containing particles of highly fluorinated ion exchange polymer
Liquid compositions containing particles of highly fluorinated ion-exchange polymer having sulfonate functional groups with an ion exchange ratio of less than about 33. The compositions contain at...
|
|
|
6160190 |
Alkylation of aromatic compounds using a sol-gel derived porous microcomposite of perfluorinated ion-exchange polymer and metal oxide
Porous microcomposites have been prepared from perfluorinated ion-exchange polymer and metal oxides such as silica using the sol-gel process. Such microcomposites possess high surface area and...
|
|
|
6150426 |
Compositions containing particles of highly fluorinated ion exchange polymer
Solid and liquid compositions containing particles of highly fluorinated ion-exchange polymer having sulfonate functional groups with an ion exchange ratio of less than about 33. The compositions...
|
|
|
6034290 |
Porous microcomposite of metal cation exchanged perfluorinated ion-exchange polymer and network of metal oxide, silica, or metal oxide and silica
Porous microcomposites comprising a perfluorinated ion-exchange polymer (PFIEP) containing pendant metal cation exchanged sulfonate groups, metal cation exchanged carboxylate groups, or metal...
|
|
|
5916837 |
Porous microcomposite of metal cation exchanged perfluorinated ion-exchanged polymer and network of metal oxide, silica or metal oxide and silica
Porous microcomposites comprising a perfluorinated ion-exchange polymer (PFIEP) containing pendant metal cation exchanged sulfonate groups, metal cation exchanged carboxylate groups, or metal...
|
|
|
5824622 |
Porous microcomposite of perfluorinated ion-exchange polymer and metal oxide, a network of silica, or a network of metal oxide and silica derived via a sol-gel process
Porous microcomposites comprising a perfluorinated ion-exchange polymer (PFIEP) containing pendant sulfonic acid and/or carboxylic acid groups entrapped within and highly dispersed throughout a...
|