Mobil Oil Corporation

Mobile Oil Corporation

Jocelyn A Kowalski

Robert P Absil

Thomas F Degnan

Girish K Chitnis

George H Hatzikos

Grant H Yokomizo

Thomas Mebrahtu

Arthur W Chester

David Lawrence Stern

Jeffrey S Beck

Joseph A Herbst

Mae K Rubin

Daria N Lissy

Mark F Mathias

Chaya R Venkat

Anthony S Fung

Robert A Crane, Jr

John Paul Mc Williams

Gordon J Kennedy

Yung-Yang Huang

A process is described for isomerizing a feed which contains ethylbenzene and xylene, which process comprises the steps of:

Xylene isomerization

A process is provided for producing pyridine and/or alkylpyridine compounds comprising reacting a feedstream of ammonia and at least one C.sub.1-5 carbonyl reactant under conversion conditions and in the presence of a phosphorus-modified molecular sieve containing catalyst to produce a product stream having a pyridine and/or a pyridine based compound selected from alkylpyridines or polyalkylpyridines. The catalyst has improved attrition resistance without affecting catalyst activity or selectivity.

Pyridine/picoline production process

There is provided a catalyst comprising yttrium containing zeolite Y. The zeolite Y is essentially free of rare earth ions. There is also provided a method for making this catalyst. There is further provided a process for using this catalyst for cracking gas oils. It has been discovered that when yttrium is incorporated into this zeolite Y, and when this catalyst is used to crack gas oils, these results improved gasoline selectivity and reduced dry gas make.

Yttrium containing zeolite Y cracking catalyst

A process for catalytic cracking of a hydrocarbon feedstock feeds to produce an enhanced yield of C.sub.3 to C.sub.5 olefins comprises contacting the feedstock with a catalyst composition comprising a large pore molecular sieve having a pore size greater than about 7 Angstrom and an additive component comprising a phosphorus-containing zeolite having a Constraint Index of about 1 to about 12 and a crystal size less than 0.2 micron.

Catalytic cracking process

A catalyst composition which comprises a crystalline metallosilicate having the structure of zeolite Beta, phosphor and a matrix that is substantially free of crystalline aluminum phosphate which has improved resistance to steam deactivation which has higher cracking activity than analogous catalysts prepared without phosphorus. The crystalline metallosilicate be used in the as-synthesized form or in the calcined form. included is the method to produce the catalyst composition and methods for the use of catalysts prepared by the present method in organic conversion processes. Specific embodiments of the invention involve various techniques for preparation of catalyst containing phosphorus and crystalline metallosilicates having the structure of zeolite Beta. Catalysts prepared according to the method of this invention are useful for organic compound, e.g., hydrocarbon compound, conversion processes. Organic compound conversion processes include cracking, hydrocracking, and transalkylation, among others.

Hydrocarbon coversion using improved zeolite Beta catalyst

Silicon-containing species which evolve from the calcination of silicone treated catalysts may be removed by the use of an alumina-containing guard bed. The method is particularly useful for the production of silicone treated ZSM-5 catalysts.

Use of an alumina containing bed for silicon species capture in the

This invention relates to the catalyst composition resulting from the addition of phosphorus, and optionally, a matrix material, to a porous crystalline material having the structure of MCM-22, along with the method for making the catalyst composition, and the method for using the catalyst composition in catalytic cracking. It is desirable to improve the hydrothermal stability of the catalysts which are based upon porous crystalline materials having the X-ray structure of MCM-22 to increase the activity that the catalyst maintains after repeated cycles of steaming such as is experienced in the FCC process. It has been found that phosphorus addition to a porous crystalline material having the structure of MCM-22 improves the hydrothermal stability of the resulting catalyst. This improved catalyst is useful in organic conversion processes, e.g., catalytic cracking processes.

Catalyst and method of manufacture

A process is provided for converting feedstock hydrocarbon compounds over a catalyst composition which comprises a large-pore molecular sieve component and an additive catalyst component, said additive catalyst component having been formulated in a special way to provide an improved catalyst and conversion process. An embodiment of the present invention comprises an improved catalytic cracking process to produce high octane gasoline, and increased lower olefins, especially propylene and butylene.

Catalytic conversion with improved catalyst

A catalyst composition which comprises a crystalline metallosilicate having the structure of zeolite Beta, phosphorus, and a matrix that is substantially free of crystalline aluminum phosphate which has improved resistance to steam deactivation and which has higher cracking activity than analogous catalysts prepared without phosphorus. The crystalline metallosilicate may be used in the as-synthesized form or in the calcined form. Also included is the method to produce the catalyst composition and methods for the use of catalysts prepared by the present method in organic conversion processes. Specific embodiments of the invention involve various techniques for preparation of catalysts containing phosphorus and crystalline metallosilicates having the structure of zeolite Beta. Catalysts prepared according to the method of this invention are useful for organic compound, e.g., hydrocarbon compound, conversion processes. Organic compound conversion processes include cracking, hydrocracking, and transalkylation, among others.

Manufacture of improved zeolite Beta catalyst

A catalyst composition is provided which comprises a large-pore molecular sieve component and an additive catalyst component, said additive catalyst component having been formulated in a special way to provide an improved catalyst and conversion process. An embodiment of the present invention comprises an improved catalytic cracking process to produce high octane gasoline, and increased lower olefins, especially propylene and butylene.

Catalyst and catalytic conversion therewith

A process is provided for converting feedstock hydrocarbon compounds over a catalyst composition which comprises a large-pore molecular sieve material and an additive catalyst composition comprising crystalline material having the structure of ZSM-5 and a silica/alumina mole ratio of less than about 30. An embodiment of the present invention comprises an improved catalytic cracking process to produce high octane gasoline, increased alkylate and potential alkylate, and increased lower olefins, especially propylene.

Catalytic conversion with improved catalyst catalytic cracking with a

A catalytic cracking process for converting a hydrocarbon fraction, preferably boiling in the range of a heavy gas oil, is disclosed in which the cracking catalyst is a large crystal fully crystalline zeolite Beta having a broad range of silica-to-alumina mole ratios, i.e. 20-&gt;1000. The zeolite Beta catalyst is synthesized with a nitrogenous organic chelating agent, such as a tertiary alkanolamine, preferably triethanolamine, in the synthesis mixture along with at least one source of organic directing agent such as tetraethylammonium hydroxide, tetraethylammonium bromide and tetraethylammonium fluoride. The zeolite Beta can be used as a stand alone catalyst or an additive catalyst for hydrocarbon cracking reactions along with another molecular seive type catalyst such as a faujasite catalyst or ZSM-5. The large crystal zeolite Beta can also be treated with a source of phosphorus to enhance the properties of the zeolite.

Catalytic cracking process utilizing a zeolite beta catalyst synthesized

The present invention is directed to a novel catalyst useful in the cracking of hydrocarbons. The catalyst of the present invention is formed with at least one zeolite, a first clay having a first average particle size and a second clay having a smaller average particle size than the first clay, wherein at least one of the clays or the zeolite is first treated with a source of phosphorus, such as phosphoric acid. These components are mixed in a slurry and spray dried at a low pH. Thus the present invention is also directed to a process for preparing a zeolite catalyst. The catalysts of the present invention advantageously do not require calcination in order to obtain low attritability.

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Clarksboro, NJ, United States of America

Jocelyn A Kowalski