Pq Corporation

Shell Oil Comapny

Chevron U.s.a. Inc.

Abb Lummus Global Inc.

William Edward Cormier

Hong-Xin Li

Bjorn Moden

David Allen Cooper

Stephen Joseph Miller

Elliot P Hertzenberg

Xingtao Gao

Wiebe Sjoerd Kijlstra

Bart Pelgrim

Gary M Pasquale

Anton Petushkov

Bonita K Marcus

Richard Hinchey

Roman W Wypart

Gayatri Sidart Rav

Gerald Martin Woltermann

Monique Van Der Zon

Chen Y Yeh

Vincent Rogers

There is disclosed an organic-free, metal-containing zeolite Beta with a silica-to-alumina ratio (SAR) ranging from 5 and 20, and a metal content of at least 0.5 wt. %. There is also disclosed a method of making such a zeolite Beta without organic structure directing agent (SDA). The metal, which may comprise Fe or Cu, can be found in amounts ranging from 1-10 wt. %. A method of selective catalytic reduction of nitrogen oxides in exhaust gases using the disclosed zeolite is also disclosed.

Metal-containing zeolite beta for NOreduction and methods of making the same

Paraffin isomerization catalyst comprising of from 0.01 to 5 wt. % of a Group VIII noble metal on a carrier containing alumina and zeolite beta having a silica to alumina molar ratio (SAR) of from 5 to 15 and process employing such catalyst for isomerization of a hydrocarbon feed containing paraffins having of from 4 to 8 carbon atoms.

Isomerization catalyst

There is disclosed a microporous crystalline material comprising a metal containing chabazite having a crystal size greater than 0.5 microns and a silica-to-alumina ratio (SAR) greater than 15, wherein the metal containing chabazite retains at least 80% of its initial surface area and micropore volume after exposure to temperatures of up to 900&#xb0; C. in the presence of up to 10 volume percent water vapor for up to 1 hour. Methods of using the disclosed crystalline material, such as in the SCR of NOin exhaust gas are also disclosed, as are methods of making such materials.

High silica chabazite for selective catalytic reduction, methods of making and using same

There is disclosed a microporous crystalline material comprising a crystal structure having building units of double-6-rings (d6r) and pore opening of 8-rings, wherein the material comprises a first metal chosen from alkali-earth group, rare-earth group, alkali group or mixtures thereof, and a second metal chosen from copper, iron or mixtures thereof, wherein the material has molar silica to alumina ratio (SAR) from 3 to 12, and is further steamed to enhance stability. Methods of making the crystalline material are also disclosed. There is also disclosed a method of selective catalytic reduction of nitrogen oxides in exhaust gas, comprising at least partially contacting the exhaust gases with an article comprising the disclosed microporous crystalline material.

Stabilized microporous crystalline material, the method of making the same, and the use for selective catalytic reduction of NO

There is disclosed a microporous crystalline material having pore opening ranging from 3 to 5 Angstroms, where the material comprises a first metal chosen from alkali earth group, rare earth group, alkali group, or mixtures thereof, and a second metal chosen from iron, copper or mixtures thereof; and has a molar silica to alumina ratio (SAR) from 3 to 10. The microporous crystalline material disclosed herein may comprise a crystal structure having building units of double-6-rings (d6r) and pore opening of 8-rings as exemplified with framework types defined by the Structure Commission of the International Zeolite Association having structural codes of CHA, LEV, AEI, AFT, AFX, EAB, ERI, KFI, SAT, TSC, and SAV. There is also disclosed a method of selective catalytic reduction of nitrogen oxides in exhaust gas, comprising at least partially contacting the exhaust gases with an article comprising the disclosed microporous crystalline material.

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There is disclosed a highly crystalline, small crystal, ferrierite zeolite prepared from a gel containing a source of silica, alumina, alkali metal and a combination of two templating agents. The resulting material includes ferrierite crystals having a particle size of about or less than about 200 nm. The desired crystal size can be achieved by using a specific composition of the gel. The purity of the material and the crystal size was determined by using X-ray powder diffraction and scanning electron microscopy. The material has excellent surface area and micropore volume as determined by nitrogen adsorption.

Small crystal ferrierite and method of making the same

There is disclosed iron-containing aluminosilicate zeolites having both framework iron and iron cations on the ion-exchange sites. There is also disclosed a direct synthesis method of making an iron-containing aluminosilicate zeolite, which does not require the use of an intermediate step, such as ion-exchange or impregnation. In addition, there is disclosed a method of using the iron-containing aluminosilicate zeolite disclosed herein in a selective catalytic reduction reaction, typically in the presence of ammonia, to reduce or remove nitric oxides from exhaust emissions.

Iron-containing aluminosilicate zeolites and methods of making and using same

There is disclosed a hydrothermally stable microporous crystalline material comprising a molecular sieve or zeolite having an 8-ring pore opening structure, such as SAPO-34 or aluminosilicate zeolite, able to retain a specific percentage of its surface area and micropore volume after treatment with heat and moisture, such as at least 80% of its surface area and micropore volume after exposure to temperatures of up to 900&#xb0; C. in the presence of up to 10 volume percent water vapor for a time ranging from 1 to 16 hours. Methods of using the disclosed crystalline material, such as in the SCR of NOin exhaust gas are also disclosed, as are methods of making such materials.

Microporous crystalline material comprising a molecular sieve or zeolite having an 8-ring pore opening structure and methods of making and using same

Molecular sieves are prepared by forming a reaction mixture slurry, spray drying the reaction mixture slurry to form particles, and heating the spray dried reaction mixture at a temperature and pressure sufficient to cause crystallization of the molecular sieve. The reaction mixture contains an organic templating agent capable of forming the molecular sieve. The template may be added to the reaction mixture either by adding all of the template prior to spray drying, or by adding a portion of the template prior to spray drying with the remainder being added after spray drying.

Preparation of molecular sieves involving spray drying

A method for treating zeolite particles to remove organic templating agent therefrom is accomplished by calcining the zeolite particles in a fluidized-bed at a temperature of no more than about 600&#xb0; C. for a period of time sufficient to remove at least about 50% of the organic templating agent.

Method of treating zeolite

A hydrophobic zeolite is prepared having high Hydrophobicity Index number by calcining a zeolite with steam under turbulent condition with respect to flow pattern of the zeolite and at a temperature within the range of 650-1000&deg; C.

Process for preparing a modified zeolite

The present invention describes halogenated polymer resins stabilized with one or more co-stabilizers, at least one co-stabilizer comprising a synthetic crystalline aluminosilicate of the formula M O.Al O .ySiO .wH O, in which M is a charge balancing cation, n is the valence of M and is 1 or 2, y is the number of moles of SiO per mole of Al O , and is 1.85 to 15 with a preferred range of about 2 to 5, and w is the moles of water of hydration per molecule of said aluminosilicate, wherein said aluminosilicate has a mean crystallite size in the range of about 0.01 &mgr;m to about 1 &mgr;m and a mean particle size in the range of about 0.1 to 10 &mgr;m. Also described is a method for stabilizing halogenated polymers such as PVC and CPVC by incorporating said aluminosilicate into a formulation thereof. A zeolite process improvement for creating a dehydrated zeolite that does not substantially rehydrate is also described. The zeolite created by such process is ideal for use as a co-stabilizer of halogenated polymer resins.

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Harleysville, PA, United States of America

William Edward Cormier