Abstract: We provide a method for making hydrocarbon products with reduced organic halide contamination, comprising: a. separating an effluent from an ionic liquid catalyzed hydrocarbon conversion reaction into: i. a hydrocarbon fraction comprising an organic halide contaminant and from greater than zero to less than 5000 wppm olefins; and ii. a used ionic liquid catalyst fraction comprising a used ionic liquid catalyst; and b. contacting the hydrocarbon fraction with an aromatic hydrocarbon reagent and an ionic liquid catalyst to reduce a level of the organic halide contaminant to from greater than zero to 20 wppm in a finished hydrocarbon product.

Abstract: Described is an apparatus for, and a method of, recovering linear butenes from a mixed feed comprising providing a first mixed feed comprising linear butenes and isobutene; contacting the first mixed feed with an oligomerization catalyst such as an MWW family zeolite in a first oligomerization reactor to produce a second mixed feed comprising the linear butenes, C8 olefins and higher oligomers, and a reduced amount of isobutene relative to the first mixed feed; and separating the second mixed feed to produce a first effluent of first purified linear butenes, and a second effluent of C8 olefins and higher oligomers. The oligomerization reactor may be a converted isobutene-to-methyl-t-butylether reactor.

Abstract: A method for reducing halide concentration in a hydrocarbon product made by a hydrocarbon conversion process using an ionic liquid catalyst comprising a halogen-containing an acidic ionic liquid comprising: (i) separating at least a portion of the hydrocarbon product from the ionic liquid catalyst used in the hydrocarbon conversion process from the hydrocarbon product; (ii) contacting at least a portion of the separated hydrocarbon product with an ionic liquid catalyst having the same formula as the ionic liquid catalyst used in the hydrocarbon conversion process; (iii) separating at least a portion of the hydrocarbon product from the ionic liquid catalyst of step (ii); and (iv) recovering at least a portion of the separated hydrocarbon product of step (iii) having a halide concentration less than the halide concentration of the hydrocarbon product of step (i) is disclosed.

Abstract: The polymerization process is carried out starting from a monomer that is introduced via pipe (1) and a comonomer that is introduced via pipe (2); the comonomer that is used, which is an alpha-olefin, is introduced into polymerization reactor P in the form of an approximately pure compound. The polymerization effluent is then separated in separator S1 into two fractions: a heavy fraction that is evacuated via pipe (5) and that contains at least one polymer, and a light fraction that is evacuated via pipe (4) and that comprises the monomer that has not reacted, the comonomer that has not reacted, as well as isomers of this comonomer. At least a portion of the light fraction is then treated during an ethenolysis stage E in the presence of an addition of fresh ethylene that is introduced via line (9). The effluent that is produced in the ethenolysis stage is subjected to at least two separations in separation train S2.

Abstract: Medium-chain olefins containing as impurities 2-alkyl substituted isomers having a close boiling point are purified by (i) passing over a solid acid catalyst under mild conditions to selectively double-bond isomerise said impurities, and (ii) separating said isomerised olefins by distillation.

Abstract: A highly polymerizable dicyclopentadiene (DCPD) monomer composition is obtained. The dicyclopentadiene so obtained is highly suitable for ring-opening polymerization by metathesis catalysts. The active DCPD yields articles with excellent physical properties upon in-mold polymerization.

Abstract: A process is provided for the removal of tertiary butyl chloride from a hydrocarbon stream, wherein the hydrocarbon stream is contacted at a temperature of from about 130.degree. to about 170.degree. C. with a particulate calcium oxide containing from 1 to 10 mole % of a Group 3 or 4 compound and the hydrocarbon stream is recovered containing a reduced level of tertiary butyl chloride.

Abstract: Polyolefins are produced by a process which includes the steps of: polymerizing an olefin in a reaction zone; removing unreacted olefin from the polymer in a flash chamber and recycling the unreacted olefin to the reaction zone; stripping unreacted olefin from the polymer by passing a stripping gas through the polymer in a stripping zone; passing the unreacted olefin from the stripping zone at superatmospheric pressure through an adsorbent which selectively adsorbs olefins; depressurizing the adsorbent to produce a substantially pure olefin and recycling the substantially pure olefin to the reaction zone; purging the adsorbent bed with a nonadsorbable gas to remove residual unreacted olefin from the adsorbent; and passing the purge gas-unreacted olefin to the stripping zone to be used as stripping gas.

Abstract: A process for separating an alkali metal or alkali metal compound from a polymer comprising a conjugated diolefin and/or an alkenyl aromatic hydrocarbon monomer wherein a polymer and one or more alkali metal compounds is contacted with a suitable solid adsorbent. Preferably, the solid adsorbent will be selected from the group consisting of alumina, silica-alumina, silica and mixtures thereof.

Abstract: A process for removing vinylidene olefin from an olefin mixture containing about 1 to 55 mole percent vinylidene olefin, 0 to 20 mole percent internal olefin and the balance vinyl olefin, said process comprising:(a) reacting said olefin mixture in the presence of a BF.sub.3 /phosphorus acid catalyst system so as to selectively dimerize vinylidene olefins, and(b) separating said vinyl olefin and internal olefin from the dimerized vinylidene olefin to produce an olefin product having a reduced vinylidene olefin content and an increased vinyl olefin content compared to said starting olefin mixture.

Abstract: Vinylidene olefin is removed from an olefin mixture containing about 1 to 55 mole percent vinylidene olefin, 0 to 20 mole percent internal olefin, and the balance vinyl olefin, by:(A) reacting the olefin mixture in the presence of a BF.sub.3 -water and/or organic promoter catalyst system so as to selectively dimerize said vinylidene olefin, and(B) separating said vinyl olefin and internal olefin from the dimerized vinylidene olefin to produce an olefin product having a reduced vinylidene olefin content compared to said olefin mixture.

Abstract: This invention relates to a process for the purification of an alpha olefinic feedstock contaminated with internal olefins which process comprises contacting said alpha olefinic feedstock with ethylene in the presence of a catalyst comprising an organoborane promoted alkali metal doped molybdenum and/or rhenium oxide supported on an inorganic oxide support.

Abstract: A process for purifying predominantly straight chain olefins having from 5 to 50 carbon atoms which comprises contacting the olefins with a liquid solution of boron trifluoride in an alcohol or mixture of alcohols.

Abstract: Carbonyl sulfide is removed from propylene by hydrolysis over a catalyst comprising platinum sulfide on alumina. Specifically, the propylene is passed through, successively, a C.sub.3 -splitter, a heater, the platinum sulfide catalyst bed, and a topping still where the resulting H.sub.2 S and CO.sub.2 are separated from the purified propylene.