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6395070 Methods for removal of impurity metals from gases using low metal zeolites  
A method for removing trace moisture from a gas is disclosed. The method involves heating a zeolite having a high silica-to-alumina ratio to about 400° C. to remove physically adsorbed water from...
5932512 Fluorination of synthesized molecular sieve catalysts for increased selectivity to ethylene during conversion of oxygenates to olefins  
A method for fluorinating molecular sieve catalysts to increase selectivity to ethylene during conversion of oxygenates to olefins, fluorinated catalysts produced by such method, and methods of...
5411724 Method for substitution of alumina in the framework of zeolites by silicon  
Aluminum can be removed from tetrahedral framework sites of zeolite frameworks and substituted with elements such as silicon, gallium, titanium or zirconium. The process involves three steps: (a)...
5254337 Deodorizing compositions for animal grooming  
Animal's coats are deodorized and optionally treated in other manners by the application thereto of a composition comprising a crystalline siliceous molecular sieve which has been at least...
5202175 Thin films of metal phosphates and the method of their formation  
The invention is generally accomplished by mixing non-phosphorous containing metal resinates and phosphorous resinates, forming a coating of the mixture on a substrate and heating the mixture to...
5073410 Thin films of metal phosphates and the method of their formation  
The invention is generally accomplished by mixing non-phosphorous containing metal coordination complexes and phosphorous coordination complexes, forming a coating of the mixture on a substrate and...
5023066 Process for introduction of silicon atoms instead of aluminum atoms in the crystal lattice of a zeolite of the faujasite type  
Process for introduction of silicon atoms instead of aluminum atoms in the crystal lattice of a zeolite of the faujasite type with a halosilane at temperatures lower than 150° C., then washing....
5013535 Stabilized aluminophosphate compositions and process for preparing same  
Aluminophosphate-based molecular sieve compositions having the crystal structure of AlPO 4 -54 are stabilized against framework collapse or conversion to other crystal structures by treatment in...
5000931 Halogen modification of aluminophosphate molecular sieves  
A process for treating crystalline aluminophosphates to provide aluminophosphates having modified catalytic properties. The crystalline aluminophosphates are contacted with a halogen-derived...
4992160 Conversion of crude oil feeds by catalytic cracking  
The process for conversion of crude oil feeds in the presence of a silicoaluminophosphate molecular sieve of U.S. Pat. No. 4,440,871 and/or an aluminophosphate molecular sieve of U.S. Pat. No....
4976846 Conversion of crude oil feeds  
The process for conversion of crude oil feeds with catalysts comprising a Y zeolite-based cracking catalyst and at least one silicoaluminophosphate molecular sieve of U.S. Pat. No. 4,440,871,...
4870792 Passage of pressurized fluids through masonry work  
Disclosed is an improvement to the passage of pressurized liquids through masonry work using hollow plastic material boxes (17) embedded in pairs in a masonry work (2) and connected together by...
4844792 Hydroprocessing with a specific pore sized catalyst containing non-hydrolyzable halogen  
A catalyst containing a non-hydrolyzable halogen component and an amorphous refractory oxide having controlled pore sizes is employed to hydroprocess a hydrocarbon oil.
4844791 Hydroprocessing with a catalyst containing non-hydrolyzable halogen  
A catalyst containing a non-hydrolyzable halogen component is employed to hydroprocess a hydrocarbon oil.
4839025 Mild hydrocracking with a catalyst containing non-hydrolyzable halogen  
A catalyst containing a non-hydrolyzable halogen component is employed to mildly hydrocrack a hydrocarbon oil.
4803184 Conversion of crude oil feeds  
The process for conversion of crude oil feeds in the presence of a silicoaluminophosphate molecular sieve of U.S. Pat. No. 4,440,871 and/or an aluminophosphate molecular sieve of U.S. Pat. No....
4788378 Dewaxing by isomerization  
A process is provided for dewaxing hydrocarbon feedstock by isomerizing the waxy components of the feedstock over catalyst comprising a siliceous zeolite having been prepared by the method...
4788370 Catalytic conversion  
A process is provided for converting feedstock comprising C 2 + olefins, C 2 -C 7 paraffins or mixtures thereof to product comprising C 5 + hydrocarbons over a catalyst comprising a siliceous...
4784749 Cracking/dewaxing  
A process is provided for converting feedstock comprising hydrocarbon compounds to product comprising hydrocarbon compounds of lower molecular weight than feedstock hydrocarbon compounds over a...
4753910 Dealumination of aluminosilicate zeolites  
In a method of removing tetrahedral aluminum from a aluminosilicate zeolite, the zeolite is treated with an aqueous fluorosilicate solution which reacts with tetrahedral aluminum in said zeolite to...
4713227 Method for the synthesis of metallophosphoaluminates  
Crystalline metallophosphoaluminates are prepared by hydrothermal crystallization utilizing a reaction mixture containing a substantially water-immiscible organic solvent wherein one of the...
4701313 Replacing boron with silicon in zeolite beta using SiCl.sub.4  
The present invention relates to siliceous zeolite catalysts produced by a method which includes selecting an amount of aluminum framework species to be retained in a zeolite catalyst product, and...
4684511 Process for the halogen modification of aluminophosphate molecular sieves and a product so produced  
A process for treating crystalline aluminophosphates to provide aluminophosphates having modified catalytic properties. The crystalline aluminophosphates are contacted with a halogen-derived...
4683125 Method for purifying an industrial raw material gas and a purifier for use in said method and a method of manufacturing said purifier  
The invention relates to a purifier for purifying an industrial raw material gas, formed by depositing a hydrogenated or a fluorinated amorphous substance of an element selected from a group...
Matches 1 - 24 out of 24