Abstract: A shape-selective catalyst comprises a synthetic porous crystalline material having the structure of ZSM-5 and a composition involving the molar relationship: X2O3:(n)YO2, wherein X is a trivalent element, such as aluminum, boron, iron and/or gallium, preferably aluminum; Y is a tetravalent element such as silicon and/or germanium, preferably silicon; and n is greater than about 12, and wherein the crystals have a major dimension of at least about 0.5 micron and a surface YO2/X2O3 ratio which is no more than 20% less than the bulk YO2/X2O3 ratio of the crystal. The crystals have a diffusion-modifying surface coating of a refractory material such as silica or coke. The catalyst is useful in a wide variety of selective hydrocarbon conversion processes, particularly the selective disproportionation of toluene to para-xylene.

Abstract: 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 SiO.sub.2 /Al.sub.2 O.sub.3, as synthesized, of at least 50:1, wherein the catalyst is prepared in the absence of boron. The alpha value of the catalyst is no greater than 20. The catalyst comprises a noble metal hydroisomerization catalyst such as Pt. 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.

Abstract: This invention relates the use of a catalyst composition having the structure of ZSM-5 and a matrix material, which has been manufactured by a new and useful method, for organic compound, e.g., hydrocarbon compound, conversion. The organic compound conversion processes described include catalytic cracking, gasoline hydrofinishing, toluene disproportionation, xylene isomerization, and ethylbenzene production.

Abstract: There is provided a gallium-containing MCM-22 zeolite. There are also provided methods for making this zeolite and processes for using this zeolite as a catalyst for the conversion of organic molecules. Particular conversions are reforming and the dehydrogenation of methylcyclohexane to form toluene.

Abstract: Relatively short chain alkyl aromatic compounds are prepared by alkylating or transalkylating an alkylatable aromatic compound with a relatively short chain alkylating or transalkylating agent under sufficient reaction conditions in the presence of catalyst comprising zeolite MCM-49.

Abstract: This invention relates to a new and useful method for manufacturing a catalyst composition comprising a crystalline molecular sieve having the structure of ZSM-5 and a matrix material, the new catalyst composition, and use of the new catalyst composition in accordance herewith as a catalyst component for organic compound, e.g., hydrocarbon compound, conversion.

Abstract: This invention relates to a new synthetic porous zeolite, characterize as ZSM-45, a method for its preparation and use thereof in catalytic conversion of organic compounds. This crystalline material may have a ratio of XO.sub.2 :Y.sub.2 O.sub.3 of at least 8, wherein X represents silicon and/or germanium and Y represents aluminum, boron, chromium, iron and/or gallium. When X is silicon and Y is aluminum, the new, synthetic zeolite is analogous, in some respects, to the naturally occuring zeolite, levynite. The silica/alumina form of this new crystalline material has a silica to alumina ratio of at least 8 and may be prepared with directing agents which are 2-(hydroxyalkyl) trialkylammonium compounds, dimethyldiethylammonium compounds or cobalticinium compounds. The new crystalline material exhibits a characteristic X-ray diffraction pattern.

Abstract: There is provided a gallium-containing MCM-22 zeolite. There are also provided methods for making this zeolite and processes for using this zeolite as a catalyst for the conversion of organic molecules. Particular conversions are reforming and the dehydrogenation of methylcyclohexane to form toluene.

Abstract: This invention relates to a new synthetic porous crystalline material, a method for its preparation and use thereof in catalytic conversion of organic compounds. The new crystalline material exhibits a distinctive X-ray diffraction pattern.

Abstract: 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->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.

Abstract: A large crystal zeolite Beta having a broad range of silica-to-alumina ratios, i.e. 20.fwdarw.1000, is synthesized with a chelating agent, exemplified by a tertiary alkanolamine such as triethanolamine in the synthesis mixture along with organic directing agents such as tetraethylammonium hydroxide, tetraethylammonium bromide and tetraethylammonium fluoride. The highly silicious zeolite Beta is produced from a silica source comprising precipitated silica and high purity, high silica starter seeds.

Abstract: A large crystal zeolite Beta having a broad range of silica-to-alumina ratios, i.e. 20-.fwdarw.1000, is synthesized with triethanolamine in the synthesis mixture along with organic directing agents such as tertraethylammonium hydroxide, tetraethylammonium bromide and tetraethylammonium fluoride. The highly silicious zeolite Beta is produced from a silica source comprising precipitated silica and high purity, high silica starter seeds.

Abstract: A method of producing zeolites particularly ZSM-5 and ZSM-11 by strictly controlling the composition of the forming bath such that no organic is required. In a preferred embodiment the forming bath can contain seeds, lower aliphatic alcohols and/or ammonium hydroxide. The as-crystallized product has no organic in its pore structures and has a relatively low silica to alumina ratio.

Abstract: There is provided a boron-containing aluminosilicate zeolite corresponding to the substantially aluminum and boron free silicate zeolite described in the Hinnenkamp et al. U.S. Pat. No. 4,376,757. Also provided are methods for making this borosilicate zeolite and methods for the catalytic conversion of organic charges to desired products with this borosilicate zeolite.

Abstract: A novel catalyst composition is provided for catalytic cracking of a hydrocarbon oil to provide a product of increased octane number and increased C.sub.5 + gasoline content. The catalyst composition contains a large pore crystalline molecular sieve component and an MCM-22 zeolite component.

Abstract: This invention relates to catalytic conversion of organic compounds over MCM-35, a new crystalline material exhibiting a distinctive X-ray diffraction pattern. The conversion process includes the mechanisms of cracking, hydrocracking, dewaxing, dehydrogenation and aromatic alkylation.

Abstract: This invention relates to a new form of crystalline material identified as ZSM-12 type, to a new and useful improvement in sunthesizing 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: As synthesized by previous methods, ZSM-5 or ZSM-11 zeolites are crystallized in the presence of substantial amounts of a nitrogen-containing compound. When synthesized in this way, they contain an organic ammonium cation as well as a metal cation such as sodium. To obtain a more active form, the sodium ion must be exchanged out. Such exchange, especially with ZSM-5 and ZSM-11, is difficult unless there is calcination of the zeolite to remove the obstructing organo compounds. By making these zeolites in the presence of (1) seeds of the desired zeolite, (2) mixtures of them with ammonium hydroxide and/or alcohol, (3) the alcohol per se or (4) mixtures of the alcohol with ammonium hydroxide, a product substantially deficient in organic ammonium cation is obtained. These products can be exchanged directly without any calcination.

Abstract: A process for dewaxing waxy hydrocarbon feedstocks to produce distillate fuels or lubricant stocks having improved pour point properties. The process comprises catalytic hydroisomerization of the feedstock over catalyst comprising a synthetic porous crystalline material characterized in its calcined form by an X-ray diffraction pattern including interplanar d-spacings at 12.36.+-.0.4, 11.03.+-.0.2, 8.83.+-.0.14, 6.18.+-.0.12, 6.00.+-.0.10, 4.06.+-.0.07, 3.91.+-.0.07 and 3.42.+-.0.06 Angstroms, and an Alpha Value of 10 or less.

Abstract: This invention relates to use of a new improved form of crystalline silicate identified as zeolite ZSM-11 as a catalyst component for organic compound, e.g. hydrocarbon compound, conversion.