A method of converting nitrogen oxides in a gas to nitrogen by contacting the nitrogen oxides with a nitrogenous reducing agent in the presence of a zeolite catalyst containing at least one transition metal, wherein the zeolite is a small pore zeolite containing a maximum ring size of eight tetrahedral atoms, wherein the at least one transition metal is selected from the group consisting of Cr, Mn, Fe, Co, Ce, Ni, Cu, Zn, Ga, Mo, Ru, Rh, Pd, Ag, In, Sn, Re, Ir and Pt.

Transition metal/zeolite scr catalysts

A catalyst composition and a process for using of the catalyst composition in a hydrocarbon conversion process are disclosed. The composition comprises an inorganic support, a Group VA metal or metal oxide, and optionally a Group IVA metal or metal oxide and a Group VIII metal or metal oxide. The process comprises contacting a fluid which comprises at least one saturated hydrocarbon with the catalyst composition under a condition sufficient to effect the conversion of the hydrocarbon to an olefin. Also disclosed is a process for producing the catalyst composition.

Hydrocarbon conversion catalyst composition and processes therefor and therewith

This invention discloses a process for producing a high Viscosity Index lubricant having a VI of at least 125 from a waxy hydrocarbon feed having a wax content of at least 40 wt.%. The process comprises catalytically dewaxing waxy paraffins present in the feed by isomerization in the presence of hydrogen and in the presence of a low acidity large pore zeolite isomerization catalyst. This catalyst has a ratio of SiO2/Al2O3, as synthesized, of at least 200:1, wherein the catalyst is prepared in the absence of boron. The feed may be hydrocracked prior to dewaxing with the large pore zeolite. The effluent of the process may also be further dewaxed by either solvent or catalytic means in order to achieve target pour point.

Wax hydroisomerization process

Lithium/alkaline earth metal X zeolites in which the lithium:alkaline earth metal equivalent ratio is from about 95:5 to about 50:50 and lithium/alkaline earth metal A zeolites in which the lithium:alkaline earth metal equivalent ratio is from about 10:90 to about 70:30 are useful for separating oxygen and nitrogen from mixtures because they combine high adsorption capacity with high thermal stability.

Mixed ion-exchanged zeolites and processes for the use thereof in gas separations

The invention relates to a molecular sieve catalyst composition, to a method of making or forming the molecular sieve catalyst composition, and to a conversion process using the catalyst composition. In particular, the invention is directed to making a formulated molecular sieve catalyst composition from a slurry of formulation composition of a synthesized molecular sieve that has not been fully dried, a binder and an optional matrix material. In a more preferred embodiment, the weight ratio of the binder to the molecular sieve and/or the solid content of the slurry is controlled to provide an improved attrition resistant catalyst composition, particularly useful in a conversion process for producing olefin(s), preferably ethylene and/or propylene, from a feedstock, preferably an oxygenate containing feedstock.

Molecular sieve catalyst composition, its making and use in conversion processes

A process is provided for converting feedstock hydrocarbon compounds over a catalyst composition which comprises clay and a zeolite component, at least one of which has been treated with a phosphorus-containing compound, for example, ammonium dihydrogen phosphate or phosphoric acid, and which is spray dried at a low pH, preferably lower than about 3. 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

In a method for preparing a low acidity refractory oxide-bound zeolite catalyst, there is provided a substantially homogenous mixture of zeolite, water and a low acidity refractory oxide binder containing at least an extrusion-facilitating amount of said binder in a colloidal state to provide an extrudable mass, the mixture being substantially free of added alkali metal base and/or basic salt. The extrudable mass is then extruded, dried and calcined to produce a product of similar crush strength to an alumina-bound material.

Method for preparing a zeolite catalyst bound with a refractory oxide of low acidity

The present invention is directed to a phosphorus containing catalyst which is formed by spray drying at a pH preferably less than 3. The present invention also comprises methods for preparing catalysts comprising phosphoric acid treated clay, as well as methods for cracking hydrocarbons utilizing the novel catalysts disclosed herein. The catalysts of the present invention advantageously exhibit low attritability.

Cracking catalysts comprising phosphorus and method of preparing and using the same

A catalyst comprising a molecular sieve having a lattice aluminum content in which the silica/alumina framework mole ratio is less than 55, and having a diffusion rate constant of less than about 150 sec-1 ×10-6 is particularly useful for vapor-phase disproportionation of toluene.

Toluene disproportionation 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.

Robert P. L. Absil

Papers

Catalytic conversion with improved catalyst

Method for preparing a zeolite catalyst bound with a refractory oxide of low acidity

Cracking catalysts comprising phosphorus and method of preparing and using the same

Toluene disproportionation catalyst

Catalyst and catalytic conversion therewith