|
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...
|
|
|
7241930 |
Transalkylation of aromatic fluids
A process for making an ethylated polycyclic aromatic compound in a mixed aromatic fluid, the process comprising contacting the mixed aromatic fluid containing a polycyclic aromatic compound and a...
|
|
|
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...
|
|
|
7148391 |
Heavy aromatics processing
In a process for converting C 9 + aromatic hydrocarbons to lighter aromatic products a feed comprising C 9 + aromatic hydrocarbons is contacted under transalkylation reaction conditions with a...
|
|
|
7119245 |
Synthesis of an un-supported, high-flow ZSM-22 zeolite membrane
Novel methods for synthesizing wholly un-supported, high-flow catalytic membranes consisting of 100% crystalline ZSM-22 crystals with no binder phase, having sufficient porosity to allow high...
|
|
|
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...
|
|
|
6949181 |
Method for impregnation of molecular sieve—binder extrudates
Method for impregnating a Group VIII metal on a molecular sieve—binder extrudate wherein the binder comprises a low acidity refractory oxide binder material, which is essentially free of alumina,...
|
|
|
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...
|
|
|
6667266 |
Method for impregnation of molecular sieve-binder extrudates
Method for impregnating a Group VIII metal on a molecular sieve-binder extrudate wherein the binder comprises a low acidity refractory oxide binder material, which is essentially free of alumina,...
|