Abstract: There is provided a hydrocracking process with a catalyst comprising MCM-36.

Abstract: A hydrocracking catalyst with improved distillate selectivity comprises, in addition to a metal component, a mesoporous crystalline material together with a molecular sieve component of relatively smaller pore size. The metal component of the catalyst is preferably associated with the high-surface area mesoporous component and high-metal loadings can be achieved in order to give good hydrogenation activity to the catalyst. The relatively smaller pore size component is preferably a large pore size zeolite such as zeolite Y or an intermediate pore size zeolite such as ZSM-5; this component provides a higher level of acidic functionality than the mesoporous component, achieving a functional separation in the hydrocracking process, permitting the metals loading and acidic activities to be optimized for good catalyst selectivity and activity. The catalysts enable the distillate selectivities comparable to amorphous catalyst to be achieved with improved conversion activity.

Abstract: Petroleum wax feeds are converted to high viscosity index lubricants by a two-step hydrocracking-hydroisomerization process in which the wax feed is initially subjected to hydrocracking under mild conditions with a conversion to non-lube range products of no more than about 40 weight percent of the feed. The hydrocracking is carried out at a hydrogen pressure of at least 1,000 psig (7,000 kPa) using an amorphous or mesoporous crystalline catalyst which preferentially removes the aromatic components present in the initial feed. The hydrocracked effluent is then subjected to hydroisomerization in a second step using a low acidity hydroisomerization catalyst which effects a preferential isomerization on the paraffin components to less waxy, high VI isoparaffins. The second stage, which is carried out at relatively low temperature, typically from 600.degree. to 650.degree. F. with a 650.degree. F.

Abstract: A hydrocracking process uses a catalyst which is based on an ultra-large pore crystalline material. The crystalline material has pores of at least 13 .ANG. diameter arranged in a uniform manner and exhibits unusually large sorption capacity demonstrated by its benzene adsorption capacity of greater than about 15 grams benzene/100 grams (50 torr and 25.degree. C.). A preferred form of the catalyst has a hexagonal structure which exhibits a hexagonal electron diffraction pattern that can be indexed with a d.sub.100 value greater than about 18 .ANG.. The hydrocracking catalysts based on these materials are capable of producing hydrocracked products of improved quality with lower nitrogen and aromatic content.

Abstract: A lube hydrocracking process uses a catalyst which is based on an ultra-large pore crystalline material. The crystalline material exhibits unusually large pores of at least 13 .ANG. diameter and a high sorption capacity demonstrated by its benzene adsorption capacity of greater than about 15 grams benzene/100 grams at 50 torr and 25.degree. C. The crystalline material is characterized by an X-ray diffraction pattern with at least one d-spacing greater than about 18 .ANG. and in a particularly preferred form, a hexagonal arrangement of pores of at least 13 .ANG. diameter which can be indexed with a d.sub.100 value greater than about 18 .ANG.. The hydrocracking catalysts based on these materials are capable of producing hydrocracked lube products of good viscosity index in high yields without the use of fluorine or other promoters.

Abstract: A process for producing high quality lubricants by the hydrocracking and hydroisomerization of petroleum waxes uses a catalyst which is based on an ultra-large pore crystalline material. The crystalline material exhibits unusually large pores of at least 13 .ANG. diameter and a high sorption capacity demonstrated by its benzene adsorption capacity of greater than about 15 grams benzene/100 grams at 50 torr and 25.degree. C. The crystalline material is characterized by an X-ray diffraction pattern with at least one d-spacing greater than about 18 .ANG. and in a particularly preferred form, a hexagonal arrangement of pores of at least 13 .ANG. diameter which can be indexed with a d.sub.100 value greater than about 18 .ANG.. The hydrocracking catalysts based on these materials are capable of producing lube products with a high VI of at least 120 and usually higher, values of 135 and higher e.g. 143.

Abstract: A method is provided for reducing NO.sub.x for high flow applications such as NO.sub.x abatement in an exhaust gas from an internal combustion engine operating under lean burn conditions wherein NO.sub.x is reduced by hydrocarbon reductants. The method employs a hydrothermally stable catalyst comprising transition metal-containing ZSM-5 which is prepared by in-situ crystallization of an aggregate comprising ZSM-5 seeds, silica, and a crystalline silicate.

Abstract: This invention relates to catalytic conversion of feedstock organic compounds to conversion product by contacting the feedstock at conversion conditions with catalyst comprising a new form of crystalline porous chalcogenide, e.g., silicate or like material, synthesized by a particular method.

Abstract: Hydroprocessing catalysts of high metal content and surface area are based on a support material comprising a non-layered, ultra-large pore crystalline material. The crystalline material exhibits unusually large pores of at least 13 .ANG. diameter and a high sorption capacity demonstrated by its benzene adsorption capacity of greater than about 15 grams benzene/100 grams at 50 torr and 25.degree. C. and may be characterized by an X-ray diffraction pattern with at least one d-spacing greater than about 18 .ANG.. In a particularly preferred form, the crystalline material has a hexagonal arrangement of pores of at least 13 .ANG. diameter which has an electron diffraction pattern with one line at a d.sub.100 value greater than about 18 .ANG.. The catalysts based on these materials are capable of accommodating high metal loadings while retaining a high surface area with high pore volume and low density.

Abstract: A hydrocracking catalyst with improved distillate selectivity comprises, in addition to a metal component, a mesoporous crystalline material together with a molecular sieve component of relatively smaller pore size. The metal component of the catalyst is preferably associated with the high-surface area mesoporous component and high-metal loadings can be achieved in order to give good hydrogenation activity to the catalyst. The relatively smaller pore size component is preferably a large pore size zeolite such as zeolite Y or an intermediate pore size zeolite such as ZSM-5; this component provides a higher level of acidic functionality than the mesoporous component, achieving a functional separation in the hydrocracking process, permitting the metals loading and acidic activities to be optimized for good catalyst selectivity and activity. The catalysts enable the distillate selectivities comparable to amorphous catalyst to be achieved with improved conversion activity.

Abstract: Low acidity refractory oxide-bound molecular sieve, e.g., zeolite, compositions, for example, zirconia-bound zeolite Beta, possessing superior physical properties, e.g., crush strength, and the method for their manufacture are described. Since low acidity refractory oxide-bound catalysts are less active than alumina-bound zeolite catalysts, the former are particularly useful in hydrocarbon conversion processes in which reduced coke make increases catalyst cycle length. Due to their stability in acid environments, the low acidity refractory oxide-bound molecular sieve extrudate herein can be acid treated without unduly compromising its structural integrity.

Abstract: A flue gas that contains small amounts of both HCN and NO.sub.x, produced, for example, by catalyst regeneration in the fluid catalytic cracking of a petroleum gas oil, is readily denitrified by the catalyzed reaction that proceeds approximately according to:HCN+NO.fwdarw.N.sub.2 (gas)+CO+CO.sub.2 +H.sub.2 OIf the molar ratio of HCN to NO in the flue gas is about 1.0, e.g. in the range of about 0.8 to 1.2, effective denitrification is achieved without first changing the composition of the flue gas by contacting it with catalyst under conversion conditions including elevated temperature. If the molar ratio of HCN to NO exceeds 1.2, the ratio may be adjusted to about 1.0 to 1.1 by thermal or catalytic oxidation in the presence of oxygen gas, followed by catalytic denitrification. If the molar ratio is less than about 0.8, the effective molar ratio is adjusted to about 1.0 to 1.1 by adding NH.sub.3 gas, followed by denitirification.

Abstract: 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.sup.-1 .times.10.sup.-6 is particularly useful for vapor-phase disproportionation of toluene.

Abstract: There is provided a method for preparing a zeolite other than ZSM-5 from a reaction mixture comprising a mixed organic directing agent which is a combination of (a) an organic nitrogen containing compound such as an amine or a quaternary ammonium compound and (b) an alcohol and/or diol. Particular zeolites synthesized by this method include ZSM-22 and ZSM-23. The use of an alcohol or a diol may inhibit the coformation of ZSM-5. Especially when used to prepare ZSM-23, this method enables the preparation of more catalytically active ZSM-23 of reduced crystallite size and also enables the use of lower crystallization temperatures. Particular mixed organic directing agents for the preparation of ZSM-23 are combinations of (a) pyrrolidine and (b) ethanol or ethylene glycol.

Abstract: Alkylation of aromatics, e.g. ethylbenzene preparation, with minimized o-xylene make by contacting with olefin alkylating agent in the presence of ZSM-5 crystals having a diffusion rate constant of at least about 100 sec.sup.-1 .times.10.sup.-6 and an alpha value of less than about 100 prepared from a non-organic forming mixture comprising a silica source of precipitated silica having a particle size of 1 to 500 microns.

Abstract: This invention relates to a new form of crystalline porous chalcogenide, e.g. silicate or like material, to a new and useful improvement in synthesizing said crystalline material and to use of said crystalline material prepared in accordance herewith as a catalyst for organic compound, e.g. hydrocarbon compound, conversion.

Abstract: Olefins are converted to alcohols and/or ethers employing, as catalyst, an acidic zeolite which has been bound with an essentially non-acidic refractory oxide of at least one metal of Group IVA and/or IVB of the Period Table of the Elements, e.g., silica, titania, zirconia and/or germania.

Abstract: A low acidity Group VIII metal-containing zeolite MCM-22 catalyst, said zeolite exhibiting an Alpha value of not greater than about 150, is provided for conversion of aliphatic C.sub.2 to C.sub.12 hydrocarbon(s) to olefin(s) and/or aromatic(s).

Abstract: A process for converting light olefin to alcohol(s), ether(s) or mixtures of alcohol(s) and ether(s) which comprises contacting a feed containing at least one light olefin with water in the vapor and/or liquid phase under olefin hydration conditions in the presence of acidic zeolite MCM-22 as olefin hydration catalyst to produce said alcohol(s) and/or ether(s).

Abstract: Emission of noxious nitrogen oxides with the flue gas from the regenerator of a fluid catalytic cracking plant are reduced by incorporating into the circulating inventory of cracking catalyst separate additive particles that contain a copper-loaded zeolite material having a characteristic structure with a defined X-ray diffraction pattern. The preferred material of this type is zeolite MCM-22. The copper may be exchanged onto the zeolite or impregnated into the catalyst. In addition, the catalyst may include titanium or zirconium to provide stability and further improvements in stability may be obtained with the addition of rareearth metal cations, especially cerium or yttrium. NOX and CO emissions from the regenerator are reduced, and the gasoline produced in the unit may have an improved octane number.