Abstract: A family of crystalline aluminosilicate zeolites designated UZM-5HS and derived from UZM-5 have been synthesized. The aluminum content of the UZM-5HS is lower than that of the starting UZM-5 thus changing its ion exchange capacity and acidity.

Abstract: Applicants have synthesized a new crystalline aluminosilicate zeolite identified as UZM-4M. This new zeolite is obtained by treating a UZM-4 zeolite with a fluorosilicate salt to obtain a zeolite having the empirical formula: M1an+Al1-xExSiyOz where M1 is an alkali metal, alkaline earth metal, rare earth metal, hydronium ion or ammonium ion, E can be gallium, iron, boron, indium and mixtures thereof and has a Si/Al ratio of 1.5 to about 10.

Abstract: Applicants have synthesized a family of microporous aluminosilicate zeolites and substituted versions thereof which are identified as UZM-8. These new compositions can be prepared using either only one or more organoammonium cations, such as diethyldimethylammonium or ethyltrimethylammonium cations and optionally an alkali and/or an alkaline earth cation as structure directing agents. The UZM-8 compositions are described by an empirical formula of Mmn+Rrp+Al1-xExSiyOz and have a unique x-ray diffraction pattern.

Abstract: An aluminosilicate zeolite and substituted version designated UZM-16 have been synthesized. These zeolites are prepared using benzyltrimethyl-ammonium (BzTMA) cation or a combination of BzTMA and at least one other quaternary ammonium cation These zeolites have a structure that is related to offretite, but shows structurally different and distinct features. The UZM-16 zeolites can be dealuminated to form UZM-16HS zeolites which have different acidity, porosity and ion-exchange properties. Both UZM-16 and UZM-16HS are useful in various hydrocarbon conversion processes.

Abstract: A layered catalyst composition is disclosed where the composition is prepared by bonding an outer layer comprising a bound zeolite (e.g. zeolite beta) to an inner core material (e.g. cordierite). The use of an organic bonding agent in the catalyst preparation procedure provides a composition that is sufficiently resistant to mechanical attrition to be used commercially in aromatic alkylation processes (e.g. benzene alkylation to ethylbenzene). Advantages associated with the use of layered compositions include a significant reduction in the amount of zeolite used for a given reactor loading and improved selectivity to desired alkylated aromatic products. Further benefits are realized when the layered composition is formed into shapes having a sufficiently high void volume to reduce pressure drop across the alkylation catalyst bed. This is especially relevant for operation involving high recycle rates and consequently low alkylating agent concentrations in the reaction zone.

Abstract: A new family of crystalline alumino-silicate zeolites has been synthesized. These zeolites are represented by the empirical formula. Mmn+Rrp+Al(1−x)ExSiyOz where M is an alkali or alkaline earth metal such as lithium and strontium, R is a nitrogen containing organic cation such as tetramethyl ammonium and E is a framework element such as gallium. They are also characterized by unique x-ray diffraction patterns and have catalytic properties for carrying out various hydrocarbon conversion processes.

Abstract: A process for selectively hydrogenating C4-acetylenes in a liquid hydrocarbon stream containing largely butadiene has been developed. Hydrogen and the hydrocarbon stream are contacted with a catalytic composite comprising an inorganic oxide support having dispersed thereon finely divided copper metal and an activator metal of nickel, cobalt, platinum, palladium, manganese, or a combination thereof where 1) the catalytic composite has an average diameter of up to about {fraction (1/32)} inch (800 microns) and/or 2) at least 50 and preferably 70 weight percent of the copper metal and the activator metal are dispersed on the outer 200 micron layer of the support.

Abstract: A process for transalkylating a polyalkylated aromatic compound with a non-alkylated aromatic compound using a new family of related crystalline aluminosilicate zeolites has been developed. These zeolites are represented by the empirical formula: Mmn+Rrp+Al(1−x)ExSiyOz where M is an alkali or alkaline earth metal such as lithium and strontium, R is a nitrogen containing organic cation such as tetramethyl-ammonium and E is a framework element such as gallium.

Abstract: A process for selectively hydrogenating C4-acetylenes in a liquid hydrocarbon stream containing largely butadiene has been developed. Hydrogen and the hydrocarbon stream are contacted with a catalytic composite comprising an inorganic oxide support having dispersed thereon finely divided copper metal and an activator metal of nickel, cobalt, platinum, palladium, manganese, or a combination thereof where 1) the catalytic composite has an average diameter of up to about {fraction (1/32)} inch (800 microns) and/or 2) at least 70 weight percent of the copper metal and the activator metal are dispersed on the outer 200 micron layer of the support.

Abstract: A process for isomerising xylene using a new family of related crystalline aluminosilicate zeolites has been developed. These zeolites are represented by the empirical formula: Mmn+Rrp+Al(1−x)ExSiyOz where M is an alkali or alkaline earth metal such as lithium and strontium, R is a nitrogen containing organic cation such as tetramethyl-ammonium and E is a framework element such as gallium.

Abstract: A process for alkylation of aromatic compounds using a new family of related crystalline aluminosilicate zeolites has been developed. These zeolites are represented by the empirical formula: Mmn+Rrp+Al(1−x)ExSiyOz where M is an alkali or alkaline earth metal such as lithium and strontium, R is a nitrogen containing organic cation such as tetramethyl-ammonium and E is a framework element such as gallium.

Abstract: A layered catalyst composition is disclosed where the composition is prepared by bonding an outer layer comprising a bound zeolite (e.g. zeolite beta) to an inner core material (e.g. cordierite). The use of an organic bonding agent in the catalyst preparation procedure provides a composition that is sufficiently resistant to mechanical attrition to be used commercially in aromatic alkylation processes (e.g. benzene alkylation to ethylbenzene). Advantages associated with the use of layered compositions include a significant reduction in the amount of zeolite used for a given reactor loading and improved selectivity to desired alkylated aromatic products. Further benefits are realized when the layered composition is formed into shapes having a sufficiently high void volume to reduce pressure drop across the alkylation catalyst bed. This is especially relevant for operation involving high recycle rates and consequently low alkylating agent concentrations in the reaction zone.

Abstract: A layered catalyst composition is disclosed where the composition is prepared by bonding an outer layer comprising a bound zeolite (e.g. zeolite beta) to an inner core material (e.g. cordierite). The use of an organic bonding agent in the catalyst preparation procedure provides a composition that is sufficiently resistant to mechanical attrition to be used commercially in aromatic alkylation processes (e.g. benzene alkylation to ethylbenzene). Advantages associated with the use of layered compositions include a significant reduction in the amount of zeolite used for a given reactor loading and improved selectivity to desired alkylated aromatic products. Further benefits are realized when the layered composition is formed into shapes having a sufficiently high void volume to reduce pressure drop across the alkylation catalyst bed. This is especially relevant for operation involving high recycle rates and consequently low alkylating agent concentrations in the reaction zone.

Abstract: Applicants have prepared a novel zeolite identified as LZ-281. This zeolite has the framework topology of zeolite EMT. The LZ-281 zeolite is prepared by removing framework aluminum atoms from EMC-2 zeolite while simultaneously replacing the aluminum atoms with extraneous silicon atoms. This increases the SiO2/Al2O3 ratio versus the starting EMC-2 zeolite and results in the LZ-281 zeolite having increased thermal stability, increased number and/or strength of acid sites and increased activity in hydrocarbon processes requiring strong acid sites.

Abstract: Applicants have prepared a novel zeolite identified as LZ-281. This zeolite has the framework topology of zeolite EMT. The LZ-281 zeolite is prepared by removing framework aluminum atoms from EMC-2 zeolite while simultaneously replacing the aluminum atoms with extraneous silicon atoms. This increases the SiO.sub.2 /Al.sub.2 O.sub.3 ratio versus the starting EMC-2 zeolite and results in the LZ-281 zeolite having increased thermal stability, increased number and/or strength of acid sites and increased activity in hydrocarbon processes requiring strong acid sites.

Abstract: Molecular sieve compositions have been synthesized which are resistant to the loss of framework atoms. Specifically, the molecular sieves of the invention have the empirical formulamA: (M.sub.w Al.sub.x Si.sub.y)O.sub.2where A is at least one rare earth metal, M is chromium or titanium and "m", "w", "x" and "y" are the mole fractions of A, M, Al and Si respectively. Applicants have discovered that the rare earth metals prevent loss of chromium and titanium from the framework and degradation of the molecular sieve. Along with the composition, a process for preparing the composition and processes using the composition are disclosed and claimed.

Abstract: The invention is a hydrocracking process which produces an increased amount of hydrocarbons useable as diesel fuel by isomerization of high boiling paraffins using a dewaxing catalyst. The process is characterized by the use of a dewaxing catalyst containing a very small amount of a non-noble metal hydrogenation component such as nickel on an intermediate pore nonzeolitic molecular sieve (NZMS) material. This dewaxing catalyst has been found to be very effective in reducing the pour point of a diesel boiling range distillates even in the presence of sulfur levels which adversely affect catalysts containing higher amounts of the same metal component.

Abstract: A hydrocracking catalyst and a process using it are described. The catalyst comprises a dealuminated zeolite bound into a highly porous amorphous support matrix. The catalyst is characterized by its low piece density and a bimodal pore distribution, with the unfinished catalyst having a sizeable amount of macropores having diameters between 5,000 and 9,000 Angstroms. A high amount of mesopores between about 56 and about 297 Angstroms is also desired. The presence of pores between 300 to 500 Angstroms and greater than 10,000 Angstroms in diameter is minimized.

Abstract: A process for the steam dehydrogenation of hydrocarbons which utilizes a novel catalytic composition is disclosed. The catalyst composite comprises a Group VIII noble metal component, a Group IA or IIA metal component, and a component selected from the group consisting of tin, germanium, lead, indium, gallium thallium, or mixtures thereof, all on an essentially theta-alumina support having a surface area of from about 50 to 120 m2/g, and an Apparent Bulk Density of 0.5 g/cm3 or more. The process is performed at a water to hydrocarbon molar ratio of 0.25:1 to 10:1.

Abstract: A novel catalytic composition is disclosed. Also disclosed is a use for the novel composite. The catalyst composite comprises a Group VIII noble metal component, a Group IA or IIA metal component, and a component selected from the group consisting of tin, germanium, lead, indium, gallium, thallium, or mixtures thereof, all on an alumina support having a low surface area of 120 m.sup.2 /g or less, and an ABD of 0.5 g/cm.sup.3 or more. The novel catalytic composite has particular utility as a hydrocarbon dehydrogenation catalyst.