Abstract: An integrated process for the production of a refinery gasoline pool with enhanced octane value from a pentane and hexane containing feedstock by first contacting with an isomerization catalyst; fractionating the resulting product into an iC.sub.5 product stream forming part of said refinery gasoline pool and a bottom stream containing nC.sub.5, nC.sub.6, mono-branched C.sub.6 and dibranched C.sub.6 ; passing said bottom stream through an adsorption bed with dibranched C.sub.6 passing thru unabsorbed; desorbing nC.sub.5, nC.sub.6 and monobranched C.sub.6 from the absorption bed; and recycling the desorbed nC.sub.5, nC.sub.6 and monobranched C.sub.6 to the isomerization zone.

Abstract: Recarburizer coke containing not more than 0.1 weight percent sulfur and not more than 0.1 weight percent nitrogen is prepared by severe catalytic hydrotreating, followed by thermal cracking, and delayed coking of vacuum gas oil obtained from the vacuum distillation of FCC decant oil.

Abstract: Disclosed is a process for preparing C.sub.5 to C.sub.18 straight chain .alpha.-olefins from the corresponding internal olefins. The process comprises reacting a C.sub.5 to C.sub.18 straight chain olefin reactant with an electrophilic compound containing hydrogen followed by selectively cracking the resulting product.

Abstract: A substantially hydrogen chloride-free active catalyst system for dimerization and codimerization of alpha-olefins. The catalyst system includes, as one catalyst, a complex of a tungsten salt and an aniline, and, as a second catalyst, an alkyl aluminum halide.

Abstract: A process for separating 2,6-dimethylnaphthalene form a 2,6-dimethylnaphthalene-containing mixture which comprises mixing said mixture with 2,4,7-trinitro-9-fluorenone to thereby form a complex, separating a solid matter containing said complex and decomposing the solid matter containing the same to thereby separate and collect an oil rich in the 2,6-dimethylnaphthalene. According to this process, 2,6-dimethylnaphthalene can be readily separated at a high selectivity. Further, the 2,4,7-trinitro-9-fluorenone can be readily recovered and reused as such.

Abstract: In the removal of pure aromatics from aromatic-containing hydrocarbon mixtures by liquid-phase extraction or extractive distillation using a selective solvent, the specific cost of separation can be reduced at the same yield of aromatics or the yield of aromatics can be increased at the same specific cost of separation if the liquid-phase extraction or the extractive distillation is carried out in the presence of a reactive solid. At the same time, substantially aromatic-free raffinates are obtained.

Abstract: A chromatographic process able to separate para-xylene frpm C.sub.8 isomers and C.sub.9 aromatics. In the process, the para-xylene-containing feed mixture is contacted with an X or Y zeolite adsorbent having Group IA or IIA cations, e.g., barium and/or potassium, at exchangeable cationic sites. The para-xylene components are selectively adsorbed onto the adsorbent. The non-adsorbed feed is then removed from the adsorbent and the para-xylene recovered by desorption with tetralin or alkyl derivatives of tetralin. The C.sub.9 's and the other xylene isomers in the raffinate, can be separated from this heavy desorbent by fractionation of the raffinate and the desorbent recycled to the process.

Abstract: A white oil product is produced by hydrogenating a hydrocarbon stream produced from an aromatic alkylation process. The hydrogenation occurs at hydrogenation conditions in the presence of a catalyst comprising a platinum group metal component surface impregnated on a refractory oxide catalyst support. The platinum group metal component is surface impregnated such that the platinum group metal is essentially all located with a 100 micron layer of the surface of the catalyst support.

Abstract: The invention relates to framework gallium containing ultrastable Y having a framework (silica:alumina+gallium oxide) SiO.sub.2 /(Al.sub.2 O.sub.3 +Ga.sub.2 O.sub.3) mole ratio of 18:1 which contains at least 2.2% framework gallium. Moreover, the invention includes use of the framework gallium containing ultrastable Y in hydrocarbon conversion processes, such as reforming, catalytic cracking and aromatization.

Abstract: Disclosed is a process for preparing 1-hexene from 1-butene. The 1-butene is metathesized to produce 3-hexene which is then subjected to, e.g., an hydration/dehydration procedure to produce a mixture of n-hexenes containing 1-hexene.

Abstract: The subject invention relates to a process for the selective separation of at least one component of a gaseous feedstream comprising passing the feedstream containing the component through a separation unit, the separation unit containing a porous membrane having a feed side and a permeate side, and a pore size of from about 10 Angstroms to about 200 Angstroms, and having disposed in the pores of the porous membrane a facilitator liquid comprising a carrier dissolved in a suitable solvent, including:a) dissolving the component in the facilitator liquid on the feed side of the porous membrane at the feed gas/membrane interface;b) forming a component-carrier complex;c) diffusing the complex to the permeate side of the porous membrane; andd) releasing the component from the carrier.

Abstract: Processes are disclosed for recovering n-hexenes from a mixture comprising n-hexenes and at least one branched-chain C.sub.6 olefin isomer by oligomerizing the branched-chain C.sub.6 olefin isomers, but not the n-hexenes, and recovering the n-hexenes from the resulting mixture.

Abstract: An improved process is disclosed for the isomerization of olefins in gasoline streams using a medium-pore molecular-sieve catalyst. The process features high yields of C.sub.5 + isomerized product and avoids conversion of highly branched paraffins to equilibrium values.

Abstract: A catalyst for the asymmetric cyanohydrination of m-phenoxybenzaldehyde, comprises a catalytically effective amount of enantiomeric cyclo (phenylalanyl-histidine) adsorbed on a solid support comprising a non-ionic polymer resin.The catalyst is particularly useful as a catalyst in a process for the preparation of (s)-m-phenoxybenzaldehyde cyanohydrin, in which m-phenoxybenzaldehyde is reacted in a cyanohydrination solvent.

Abstract: Disclosed is a process for preparing C.sub.5 to C.sub.18 straight chain .alpha.-olefins from the corresponding internal olefins. The process comprises reacting a C.sub.5 C.sub.18 straight chain olefin reactant with an electrophilic compound containing hydrogen followed by cracking the resulting product.

Abstract: Process for isomerizing hydrocarbons at elevated temperature and pressure in the presence of hydrogen by contacting said hydrocarbons with a catalyst comprising zeolite beta and a hydrogenating-dehydrogenating metal and/or a compound of a hydrogenating-dehydrogenating metal, which zeolite beta has been treated with a solution having a pH of at least 9 and which catalyst has been calcined.

Abstract: Alpha-olefin is prepared from internal and/or vinylidene olefin by reacting the internal and/or vinylidene olefin with ethylene in the presence of a catalyst consisting essentially of Re.sub.2 O.sub.7 and B.sub.2 O.sub.3 on Al.sub.2 O.sub.3.

Abstract: A new membrane for the separation of aromatic hydrocarbons from mixtures of said aromatic hydrocarbons and non-aromatic hydrocarbons has been prepared comprising a highly aromatic polyurea/urethane membrane. These highly aromatic polyurea/urethane membranes are symmetric, dense film membranes made from the corresponding polyurea/urethane copolymers by standard membrane casting techniques. The polyurea/urethane copolymers are produced by reacting dihydroxy or polyhydroxy compounds, such as polyethers or polyesters having molecular weights in the range of about 500 to 5000 with aliphatic, alkylaromatic or aromatic diisocyanates or polyisocyanates and low molecular weight chain extenders, such as diamines, polyamines or amino alcohols.

Abstract: Alkylaromatic lubricant products are produced by the reaction of a long chain alkyne such as octyne, decyne or dodecyne over a reduced Group VIB metal oxide catalyst, preferably reduced chromium on silica. The products, which are predominantly n-alkyl substituted, possess excellent thermal and oxidative stability and may be used as lubricant base stocks and viscosity improvers.

Abstract: A catalytic cracking catalyst and process are disclosed using a catalyst containing: a matrix, a large pore molecular sieve, a shape selective paraffin cracking/isomerization zeolite and a shape selective aliphatic aromatization zeolite. An exemplary catalyst comprises dealuminized zeolite Y, optionally containing rare earth elements, HZSM-5, and gallium ZSM-5 in a matrix. The matrix contains and protects the relatively fragile zeolite components and acts as a sodium and metals sink. The large pore molecular sieve cracks large hydrocarbons to lighter paraffins and olefins. The shape selective paraffin cracking/isomerization component cracks/isomerizes the paraffins produced by the large pore molecular sieve. The shape selective aliphatic aromatization catalyst converts light paraffins and olefins into aromatics. A single shape selective zeolite, e.g., ZSM-5 with a controlled amount of an aromatization component such as gallium, may promote both paraffin cracking/isomerization and aromatization.