Abstract: Disclosed is a two-step method for separating isobutylene from a C-4 hydrocarbon fraction comprising:a) Reacting the C-4 fraction with a glycol in the presence of a catalyst comprising heteropoly acid on an inert support at a temperature of about 60.degree. to 160.degree. C. to yield the corresponding glycol mono-t-butyl ether, and subsequentlyb) reacting the intermediate glycol ether product over the same class of catalyst at a temperature of about 100.degree. to 220.degree. C. to regenerate the isolatable isobutylene.

Abstract: A process for separating lithium from a conjugated diolefin polymer wherein a solution containing said conjugated diolefin polymer and a lithium compound is contacted with magnesium phosphate, magnesium phosphate dibasic, magnesium dihydrogen phosphate or a mixture thereof. Preferably, the magnesium phosphate compound is selected from the group consisting of mono- and dihydrogen phosphates. Most preferably, the magnesium phosphate is magnesium phosphate dibasic. The magnesium phosphate, magnesium phosphate dibasic, magnesium phosphate or mixture thereof may be used in combination with water and/or methanol with relatively good results. The lithium, which is a polymerization catalyst, can be removed immediately after the conjugated diolefin polymer is prepared by contacting the polymer solution with the magnesium phosphate compound.

Abstract: A disproportionation catalyst comprising an ammonium or an alkali metal tungsten oxide and a process for forming disproportionation product using the disproportionation catalyst are disclosed. The disproportionation process is used to facilitate the separation of at least one 1-olefin from a mixture of olefins that have close boiling points by contacting the mixture of olefins with another 1-olefin under disproportionation conditions to produce disproportionation products which have significantly different boiling points among themselves and can be easily separated by conventional means.

Abstract: Solutions of caustic and sulfite are used in a single step process to remove aldehydes and vinyl esters from gaseous and liquid process streams.

Abstract: A process for the preparation of a cumene feed for cumene oxidation from a fresh cumene stream and a recycle cumene stream containing trace quantities of at least one organic acid compound by means of introducing the fresh cumene stream and the recycle cumene stream containing trace quantities of an organic acid compound into a lower zone of a generally vertical elongated countercurrent contacting zone having a caustic/hydrocarbon contacting section in a lower portion of the countercurrent contacting zone and a water/hydrocarbon contacting section in an upper portion of the countercurrent contacting zone; introducing a water stream to provide water to the water/hydrocarbon contacting section; including an aqueous caustic scrubbing solution to provide caustic solution to the caustic/hydrocarbon contacting section; removing spent aqueous caustic solution from the countercurrent contacting zone; and removing and recovering a cumene feed from the countercurrent contacting zone.

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: What is disclosed is a method of oxygen removal employing at least one solid bed of oxygen removal chemical; for example, Fe.sub.2 S.sub.3 on wood chips. Also disclosed are preferred embodiments in which are employed within the at least one bed a temperature sensor, a controller is connected with the temperature sensor and a gas operated control valve is connected with the controller such that the valve is operated to shut off the valve to the sales line if the temperature sensed is greater than a preset temperature; e.g. 150 degrees Fahrenheit.

Abstract: A process for recovering BF.sub.3 from a BF.sub.3 -promoter catalyzed .alpha.-olefin oligomerization process is disclosed wherein the oligomer reaction product is water washed to extract BF.sub.3 as its hydrate and any water soluble promoter and the water extract is distilled to remove components boiling below BF.sub.3 hydrate overhead leaving a residual product which is at least 50 weight percent BF.sub.3 in the form of BF.sub.3 hydrate.

Abstract: Olefin monomer is recovered from a liquid polymerization reaction mixture comprising olefin monomer, catalyst residue, and catalyst deactivation compounds by washing the mixture with water and then separating the organic phase and aqueous phase. The liquid mixture can also comprise soluble olefin polymer.

Abstract: A method for purifying a cis-olefin formed by alkylating a sulfonate ester comprising mixing the reaction formed by alkylating a sulfonate ester with an acid solution, separating said acid solution, and mixing the resultant purification product with a C.sub.1 -C.sub.4 alcohol and optionally a base followed by separation and distillation, or passing said reaction mixture through a silica gel and collecting the cis-olefin fraction.

Abstract: The hydrocarbon solvent contained in a solution of an organoaluminum compound is recovered by a process comprising contacting the solution with water at a volume ration of from about 3:1 to about 8:1. Preferably, the solvent is n-hexane, the organoaluminum compound is triethylaluminum sesquichloride, and the solution has been used in a process for preparing olefin polymerization catalysts.

Abstract: A method is disclosed for the purification of methane and/or ethane which comprises oxidizing the higher hydrocarbon impurities in gas with oxygen at 175.degree. C. to 375.degree. C. in the presence of a catalyst which contains silver as the active component.

Abstract: This invention relates to an improved more energy efficient process for the separation of aromatic and non-aromatic hydrocarbons from a mixed carbon feed which comprises the following steps:(a) contacting said feed in an extraction zone with an extraction solvent to provide an aromatic-rich solvent phase and a raffinate phase;(b) cooling said aromatic-rich solvent and raffinate phases;(c) introducing said cooled aromatic-rich solvent phase to a separation zone containing aromatic hydrocarbons and a solvent-rich phase containing mixed extraction solvent and water;(d) introducing said cooled raffinate phase to a separation zone in the presence of water as based on the total weight of water and the raffinate phase to provide a raffinate phase containing non-aromatic hydrocarbons and a solvent/water phase;(e) adjusting the water present in the solvent-rich phase of step (c) and the solvent/water phase of step (d);(f) recycling at least or portion the phases in step (e) to step (a);(g) separately contacting the ra

Abstract: A method is provided for reducing the level of polychlorinated aromatic hydrocarbons dissolved in an organic solvent which avoids the accumulation of sticky residues on the equipment utilized.

Abstract: The separation of homozeotropic mixtures of a paraffin or paraffins of 6-14 carbon atoms and an alcohol or alcohols of 4-8 carbon atoms is conducted in two rectification steps. In a first step, rectification is carried out in the presence of water as the azeotropic agent, and the resultant distillate, after condensation, is separated into two liquid phases. The thus-obtained organic phase is rectified in a further step without the addition of water, and the head product consisting of an alcohol/paraffin mixture is recycled into the first step. The paraffin or paraffins and the alcohol or alcohols are obtained in the lower section of the individual rectifying step or steps. The water which may be present in the starting mixture is removed from the cycle. Low-boiling paraffins and/or low-boiling alcohols are suitable as additional azeotropic agents.

Abstract: Nickel, aluminum and chlorine derivatives which remain dissolved in olefin oligomers after oligomerization in the presence of a catalyst comprising nickel, aluminum and chlorine compounds, are removed from the crude product by treatment with:oxygen or a gas containing oxygen,anhydrous ammonia, anda solution of an alkali metal hydroxide.

Abstract: Arsines are removed from gaseous stream, e.g., hydrocarbon or inert gas streams, comprising arsine impurities and also hydrogen sulfide, by contacting these gas streams with a sorbent material comprising copper oxide and zinc oxide. Preferably, the sorbent material is prepared by coprecipitating of hydroxides of copper and zinc and subsequent heating the hydroxides so as to convert the hydroxides to CuO and ZnO. Optionally, aluminum oxide is also present in the sorbent material.

Abstract: A method is disclosed for the purification of methane and/or ethane which comprises oxidizing acetylene and/or carbon monoxide in the gas with oxygen at 200.degree. C. to 375.degree. C. in the presence of a catalyst which contains silver as the active component.

Abstract: A process for removing a halogen component from a halogen-containing organic compound, which comprises contacting an organic compound in the liquid state which is produced by using a halogen containing catalyst selected from the group consisting of Friedel-Crafts catalysts and Ziegler catalysts and contains the halogen component derived from said catalyst, with a hydrotalcite compound represented by the formulaM.sub.1-x.sup.2+ M.sub.x.sup.3+ (OH).sub.2+x-ny A.sub.y.sup.n-.mH.sub.2 OwhereinM.sup.2+ represents a divalent metal ion selected from the group consisting of Mg.sup.2+, Zn.sup.2+, Ca.sup.2+, Ni.sup.2+, Co.sup.2+, Mn.sup.2+ and Cu.sup.2+,M.sup.3+ represents a trivalent metal ion selected from the group consisting of Al.sup.3+, Fe.sup.3+ and Cr.sup.3+,A.sup.n- represents an anion having a valence of n selected from the group consisting of HCO.sub.3.sup.-, OH.sup.- and CO.sub.3.sup.2-, andx, y and m are each a positive number and satisfy the following conditions 0.1<x<0.5, 0.1<y<0.4, 0.ltoreq.

Abstract: A method is disclosed for reducing the nitrogen content of hydrocarbon liquids. The method comprises contacting the hydrocarbon liquid with a solid metal salt capable of selectively extracting nitrogen-containing compounds from the hydrocarbon liquid to thereby form a nitrogen-rich solid extract. Nitrogen-lean hydrocarbon liquid is then separated from the solid extract. The solid extract is washed with a solvent capable of selectively dissolving non-nitrogen-containing compounds entrained in the solid extract. The solid extract is then treated with a release agent for selectively dissolving nitrogen-containing compounds to thereby recover the metal salt. The presently preferred metal salt is cupric chloride.

Abstract: Color may be removed from colored polyphenylated alkane by contacting this material with certain adsorbants. The adsorbants provided comprise certain crystalline zeolites in a silica alumina matrix and bauxite clay having at least one material selected from the group consisting of ferric oxide, titanium oxide, and zirconium oxide, which is activated by sulfuric acid and then calcined to provide the effective adsorbant.

Abstract: Fluorinated impurities are removed from olefin oligomers by extraction with a solid adsorbent; the oligomers have been obtained from monoolefins having 2-4 carbon atoms, in the presence of a catalyst obtained by contacting a bivalent nickel compound with a hydrocarbyl aluminum halide and a trifluoroacetic acid.

Abstract: Aromatic hydrocarbons are selectively alkylated using an alkylating mixture containing both ethylene and propylene. By employing a zeolite ZSM-12 based alkylation catalyst, essentially only the propylene from the olefin-containing alkylation mixture will react with the aromatic hydrocarbon to thereby form both an alkylaromatic product enriched in propylated alkylaromatic and a propylene-free residual olefin-containing mixture enriched in the unreacted ethylene.

Abstract: The meta isomer content of ethyl toluene or methyl styrene isomer mixtures containing predominately meta isomer and para isomer is increased by subjecting the mixture to oxidation with an oxygen containing gas, e.g. air in the presence of a zeolite modified with a transition metal oxidation catalyst, e.g. Co or Cu ZSM-5. The para isomer is selectively oxidized and the meta isomer is easily separated from the product to give isomer mixtures containing greater than 90 percent meta from mixtures containing 60-65 percent meta and not separable by conventional means.

Abstract: Olefins are oxidized to carbonyl compounds, for example, 2-hexene to a mixture of 2-hexanone and 3-hexanone, with a palladium/copper/boric acid catalyst and a suitable surfactant or phase transfer agent. The reaction takes place in a diluent system comprising at least two liquid phases, wherein at least one liquid phase is an aqueous phase, and in the presence of free oxygen. The catalyst system can be used to oxidize internal olefins, as well as terminal olefins, at reasonable rates. The catalyst system can also be used for the selective oxidation of linear olefins in a mixed stream containing linear and branched olefins.

Abstract: Petroleum fractions may be separated into aromatic rich and paraffinic-rich hydrocarbon streams by the use of methanol/water mixtures having at least 10% water by volume. The paraffinic-rich stream is recovered as raffinate and the aromatic-rich as extract. After the extraction step additional water is added to the extract and raffinate streams where it acts as an anti-solvent to effect separation of the hydrocarbon from the solvent. The water and methanol are then separated for example by flash distillation or by using super critical CO.sub.2 as an extraction solvent.

Abstract: Hot gases containing naphthalene and tar together with the possible inclusion of solids are contacted in a spray tower with water to cool the gases. A naphthalene extraction agent, such as tar, is vigorously admixed with water withdrawn from the spray tower. The admixture is separated in a settling tank from which water is obtained and recycled to the spray tower for cooling further quantities of gases. Solids, gas condensate and tar enriched with naphthalene are separately removed from the settling tank.