Abstract: A process for manufacturing a synthetic porous crystalline molecular sieve requires an aqueous reaction mixture comprising a source of X2O3 (X is a trivalent element), a source of YO2 (Y is a tetravalent element) and a source of MOH (M is an alkali metal). The H2O/MOH molar ratio is within the range of 70 to 126 and the source of X2O3 and YO2 is an amorphous material containing both X2O3 and YO2 and having YO2/X2O3 molar ratio of 15 or less. The molecular sieve products are useful as catalysts and/or absorbents. Such molecular sieves having MFI structure type, TON structure type or the structure type of zeolite beta and a composition involving the molar relationship (n) YO2:X2O3 wherein n is from 2 to less than 15 are novel compositions of matter.

Abstract: In a synthetic porous crystalline material having the structure of ZSM-5 and a composition involving the molar relationship: X.sub.2 O.sub.3 :(n)YO.sub.2, wherein X is a trivalent element; Y is a tetravalent element; and n is greater than about 12, the crystals have a major dimension of at least about 0.5 micron and surface framework YO.sub.2 /X.sub.2 O.sub.3 ratio which is no more than 20% less than the bulk framework YO.sub.2 /X.sub.2 O.sub.3 ratio of the crystal. The material is synthesized using an amino-acid as a directing agent.

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, and an alpha value of not greater than 20, wherein the catalyst is prepared in the absence of boron. The catalyst further comprises a noble metal hydrogenation component. The feed may be hydrocracked prior to dewaxing with the large pore zeolite. The feed may be solvent dewaxed prior to isomerization. The effluent of the isomerization step may also be further dewaxed by either solvent or catalytic means in order to achieve target pour point.

Abstract: The specification discloses conversion of hydrocarbons using, as catalyst, a crystalline zeolite designated ZSM-12. The zeolite has the following composition:1,0 .+-. 0.4 M.sub.2 O . W.sub.2 O . 20-200 YO.sub.2 . ZH.sub.2 Owhere M is at least one cation and n is the valence thereof, W is aluminum or gallium, Y is silicon or germanium, and Z is a value ranging from 0 to 60. In a preferred synthesized form, M is a mixture of alkali metal cations, especially sodium, and tetraalkylammonium cations. These zeolites are characterized by a specified x-ray powder diffraction pattern. Catalytically-active forms of said zeolites are used in a wide variety of hydrocarbon conversion reactions.