Abstract: A process for producing high quality, high molecular weight microcrystalline wax from a hydrocracked, undewaxed bright stock, comprising hydrodenitrification, mild hydrofinishing, and solvent dewaxing.

Abstract: A two-stage process for preparing a C.sub.3 or C.sub.4 olefin tetramer using nickel-containing HZSM-5 zeolite catalyst is disclosed. The tetramer so formed may be used to make high quality middle distillates such as jet fuel or as a petrochemical feed for making detergents.

Abstract: A process for hydrotreating hydrocarbon feedstocks using shaped catalysts is disclosed. When the catalyst is used for diffusion limited reactions, and particularly when it is used for demetalation, shaped catalysts give longer catalyst lifetimes. Preferred shaped include oval and elliptical shapes, with and without bumps.

Abstract: An improved nickel-tin hydrogenation catalyst additionally comprising palladium provides a highly active catalyst more easily activated than conventional nickel hydrogenation catalysts, and a process employing the improved catalyst to stabilize lubricating oils to ultraviolet radiation is disclosed.

Abstract: A process for the reduction of Co.sup.III to Co.sup.II in an aqueous ammoniacal solution in the presence of a porous cathode is disclosed.

Abstract: A crystalline zeolite, SSZ-16, is prepared from organic nitrogen-containing species derived from 1,4-di(1-azoniabicyclo[2.2.2]octane) lower alkane compounds.

Abstract: A crystalline, silicaceous composition is prepared from bicyclic ammonium compounds.

Abstract: A method of forming a sulfur-resistant catalyst is disclosed wherein a zeolite is bound with an alumina containing either an alkali or alkaline earth component. In one embodiment of this method, a solution of an alkali metal aluminate or alkaline earth metal aluminate is formed, the pH of the alkali metal aluminate solution is adjusted to a pH of from 6 to 8, and the solution is aged and mulled with a large-pore zeolite to form a mixture. This mixture is extruded to form an extrudate, which is dried, calcined, and impregnated with a Group VIII metal to form a catalyst. Finally, the catalyst is dried and calcined.

Abstract: A fitting for safe on-stream addition of valve packing which comprises a housing enclosing a first and second chamber each chamber associated with a means for ejecting valve packing, the first chamber being accessible from the valve when the fitting is mounted and also accessible from the second chamber through sealable portals, and the second chamber having a sealable entrance to receive valve packing, thereby enabling safe addition of valve packing to a valve through the valve gland by: sealing the first chamber, adding valve packing to the second chamber and sealing the second chamber, opening the access portal between the chambers and ejecting the valve packing from the second chamber into the first chamber, sealing the access portal between the chambers and opening the portal between the first chamber and the valve, and ejecting the valve packing from the first chamber into the valve.

Abstract: Gaseous hydrocarbons, especially methane, may be oxidized with high selectivity and efficiency essentially only to carbon monoxide and hydrogen by contacting them with gallium oxide at a temperature above 900.degree. C.

Abstract: A process for the production of transportation fuels from heavy hydrocarbonaceous feedstock is provided comprising a two-stage, close-coupled process, wherein the first stage comprises a hydrothermal zone into which is introduced a mixture comprising the feedstock, dispersed demetalizing contact particles having coke-suppressing activity, and hydrogen; and the second, close-coupled stage comprises a hydrocatalytic zone into which substantially all the effluent from the first stage is directly passed and processed under hydrocatalytic conditions.

Abstract: A process for the production of transportation fuels from heavy hydrocarbonaceous feedstock is provided comprising a two-stage, close-coupled process, wherein the first stage comprises a hydrothermal zone into which is introduced a mixture comprising a feedstock and dispersed activated or presulfided red mud having demetalizing and coke-suppressing activity, and hydrogen; and the second, close-coupled stage comprises a hydrocatalytic zone into which substantially all the effluent from the first stage is directly passed and processed under hydrocatalytic conditions.

Abstract: A process for dealkylating alkylaromatic hydrocarbons using intermediate pore size zeolites substantially free of acidity is disclosed.

Abstract: A process for the production of transportation fuels from heavy hydrocarbonaceous feedstock is provided comprising a two-stage, close-coupled process, wherein the first stage comprises a hydrothermal zone into which is introduced a mixture comprising a feedstock and metals-impregnated red mud having coke-suppressing and demetalizing activity, and hydrogen; and the second, close-coupled stage comprises a hydrocatalytic zone into which substantially all the effluent from the first stage is directly passed and processed under hydrocatalytic conditions. The preferred metals for impregnation include transition metals, in particular, nickel and molybdenum.

Abstract: A process for the production of transportation fuels from heavy hydrocarbonaceous feedstock is provided comprising a two-stage, close-coupled process, wherein the first stage comprises a hydrothermal zone into which is introduced a mixture comprising a feedstock and red mud having coke-suppressing and demetalizing activity, and hydrogen; and the second, close-coupled stage comprises a hydrocatalytic zone into which substantially all the effluent from the first stage is directly passed and processed under hydrocracking conditions.

Abstract: A gas-liquid or a gas-liquid-solid feed is contacted in a vessel containing a packed bed of contact particles. At least a portion of the feed is passed upwardly through the packed bed and the mass flow rate of the feed is periodically increased sufficiently to cause a portion of the particles within the vessel to form an expanded region within the packed bed.

Abstract: A simplified method of manufacture of noble metal/zeolite catalysts involves impregnation of the formed catalyst base with a solution of the noble metal and an ammonium salt. Catalysts having a highly uniform radial distribution of the noble metal are prepared.

Abstract: A process for enhancing recovery of metals, especially cobalt, from spent hydroprocessing catalysts when the spent catalyst particles are first roasted at between 400.degree. C. and 600.degree. C. and then contacted with a first aqueous solution of ammonia and an ammonium salt to recover nickel, cobalt, molybdenum, tungsten, and vanadium. The once-leached spent hydroprocessing catalysts are again leached by contacting them with a second aqueous solution of ammonium sulfate at a pH of 1 to 4.

Abstract: Hydrocarbon feedstocks, especially those high in Ramsbottom carbon, are vaporized by contact with a relatively inactive coked cracking catalyst, separating the resulting intermediate into a high and low boiling fraction, and cracking the high boiling fraction in a fluid catalytic cracker containing active cracking catalyst.

Abstract: A process for oligomerizing olefins in the liquid phase using a catalyst composition comprising a nickel-containing silicaceous crystalline molecular sieve catalyst and an hydrocarbyl-aluminum halide.