Abstract: The method of the invention includes making dimethyinaphthalenes by first contacting, in an alkylation zone, at alkylation conditions, a toluene-containing stream with a pentene-containing stream in the presence of an acid alkylation catalyst. At least a portion of the toluene and pentenes react to form pentyltoluenes. At least a portion of the pentyltoluenes is then contacting in a reforming zone with reforming catalyst, at reforming conditions. At least a portion of the pentyltoluenes is converted to dimethylnaphthalenes.

Abstract: The present invention relates to a catalyst composition, its methods of preparation and its use in aromatic alkylation processes. The composition comprises a heteropoly compound selected from the group consisting of heteropoly salts and heteropolyacid salts deposited in the interior of a porous support selected from the group consisting of silica, titania, and zirconia, wherein said salt of said heteropoly salt and said heteropolyacid salt is selected from the group consisting of ammonium, cesium, potassium, and rubidium salts and mixtures thereof, and wherein said heteropoly salt and said heteropolyacid salt are formed with a heteropolyacid selected from the group consisting of 12-tungstophosphoric, 12-tungstosilicic, 12-molybdophosphoric, and 12-molybdosilicic acid.

Abstract: Described are novel processes which employ reusable aluminum catalysts in Friedel-Crafts reactions.

Abstract: A catalyst composition and a process for converting a C.sub.9 + aromatic compound such as, for example, 1,2,4-trimethylbenzene to a C.sub.6 to C.sub.8 aromatic hydrocarbon such as a xylene are disclosed. The composition comprises a zeolite, a metal oxide, and optionally a selectivity modifier selected from the group consisting of silicon, sulfur, phosphorus, boron, magnesium, tin, titanium, zirconium, germanium, indium, lanthanum, cesium, oxides thereof and combinations of any two or more thereof. The process comprises contacting a fluid which comprises a C.sub.9 + aromatic compound with the catalyst composition under a condition sufficient to effect the conversion of a C.sub.9 + aromatic compound to a C.sub.6 to C.sub.8 aromatic hydrocarbon.

Abstract: A process for preparing 1,2,4,5-dimethyldiisopropylbenzene includes conducting alkylation of p-xylene with propylene to produce an alkylation product, and crystallizing the alkylation product. A heteropolyacid-supported catalyst can be used as an alkylation catalyst for the reaction. The reaction solution produced from the alkylation reaction can be distilled before crystallization to improve yield and purity even more.

Abstract: A process is disclosed for alkylating a volatile aromatic compound with a light aliphatic mono-olefinic alkylating agent and concurrently condensing the alkylating agent in the presence of a solid alkylation- and condensation-promoting catalyst and at a temperature of at least the critical temperature of the reactant mixture and at a total pressure that is above the critical pressure of the reactant mixture.

Abstract: A process wherein an FCCU off gas is treated by first subjecting the off gas to an alkylation with a heavy reformat to remove the propylene and contaminants after which the gas is separated from the reformat and alkylated products by distillation to produce an ethylene feed suitable for the reaction with benzene to produce ethyl benzene.

Abstract: A process is disclosed for the production of alkylaromatic compounds employing olefinic liquid from thermally or catalytically cracked plastics as alkylating agent. The process comprises contacting a feedstream comprising alkylatable aromatics and the olefinic liquid with acidic alkylation catalyst under alkylation conditions in an alkylation zone; and recovering an effluent stream comprising alkylaromatic compounds. The alkylation can be performed with the product of plastics pyrolysis or with non-degraded plastic feedstock in-situ with thermal/catalytic degradation of the plastic.

Abstract: A process is provided comprising: (a) contacting a hydrocarbyl lithium with an alkali metal hydrocarbyloxide in the presence of an aromatic compound; and thereafter (b) recovering an aromatic alkali metal compound; and thereafter (c) contacting said aromatic alkali metal compound with an alpha-olefin. Optionally, a catalytic support is also present during steps a, b, and c.

Abstract: The invention relates to a process for preparing monofunctional, bifunctional or polyfunctional aromatic olefins of the formula (I) ##STR1## by reaction of haloaromatics of the formula (II) ##STR2## with olefins of the formula (III) ##STR3## , wherein a palladium compound of the formula (IV) ##STR4## is used as the catalyst.

Abstract: This invention provides a process for the selective production of cumene comprising reacting benzene with propylene in the presence of a type-Y zeolite modified by treatment with a phosphorous compound. This invention also provides a process for the transalkylation of a polyalkylated benzene which comprises reacting the polyalkylated benzene in the presence of benzene and a type-Y zeolite modified by treatment with a phosphorous compound.

Abstract: In the preparation of 1,1'-binaphthyls substituted in the 2,2'-positions (and optionally substituted in one or more of positions 3 to 7 and/or 3' to 7'), a 1-halo-2-substituted naphthalene is reacted with a 2-substituted-1-naphthyl-magnesium halide in the presence of a catalyst. The catalyst comprises palladium and a phosphine ligand. Typical phosphine ligands include triphenylphosphine, 1,4-bis(diphenylphosphino)butane, 2,2'-bis(diphenylphosphinomethoxy)-1,1'-binaphthyl, and tetrakis(triphonylphosphine).

Abstract: Alkyl alcohols are added to the effluent from hydrocarbon reactions using phosphoric acid based catalysts to prevent corrosion in metallic pipes and vessels downstream of the reactor. The alcohol is believed to react with phosphoric acid present in the hydrocarbon stream to produce a mixture of phosphate esters which act as corrosion filmers to prevent corrosion. The high boiling points of the phosphate esters allow for the separation of useful product from the phosphate ester corrosion inhibitors.

Abstract: A process for reducing the mutagenicity of a polynuclear aromatic containing material containing from three to seven fused aromatic rings, especially a hydrocarbon refinery stream. The process reduces the initial mutagenicity index to a lower value by alkylating the compound with an alkylating agent which introduces an alkyl substituent having from three to five carbon atoms into the aromatic compound in the presence of an acid catalyst under alkylation conditions.

Abstract: Hydrocarbon conversion processes are described which use novel microporous compositions. These compositions have a three-dimensional microporous framework structure of ZnO.sub.2, PO.sub.2 and M'O.sub.2 tetrahedral units, and an intracrystalline pore system. The M' metal is selected from the group consisting of magnesium, copper, gallium, aluminum, germanium, cobalt, chromium, iron, manganese, titanium and mixtures thereof. Examples of the hydrocarbon conversion processes include hydrocracking, hydrotreating and hydrogenation.

Abstract: This invention presents a novel MgAPSO molecular sieve, containing a critical range of magnesium in the sieve framework and having a small crystallite size, which is particularly active for hydrocarbon conversion. The sieve advantageously is incorporated, along with a refractory inorganic oxide, into a catalyst formulation which is useful for alkylation. When utilized in a process for alkylating an aromatic with an olefin, for example in the production of cumene or ethylbenzene, the sieve catalyst shows favorable selectivity.

Abstract: A method of preparing alkylnaphthalene compounds by reaction of a compound of naphthalene or monoalkylnaphthalene with olefin in the presence of a heteropoly acid catalyst. The method enables to produce highly valuable 2-monosubstituted alkylnaphthalene compounds or 2,6-disubstituted alkylnaphthalene compounds, in a high selectivity and a high yield. The used catalyst may be readily recovered and re-utilized.

Abstract: In a multi-step process, dixylylpropane is obtained inter alia via the hitherto unknown 1,2-dimethyl-4-(.alpha.-chloroisopropyl)benzene, the readily accessible compounds o-xylene and propene being employed as starting compounds. The process yields the desired compound in high yield and isomer purity and is distinguished by a small amount of by-products. It is therefore particularly suitable for further processing without problems. The process involves the sequence of (a) Friedel-Crafts alkylation of ortho-xylene with propylene, (b) dehydrogenation of the isoproplyxlene into isopropenylxylene, (c) which is then hydrochlorinated into chloroisopropylxylene, (d) and then alkylated with a second ortho-xylene modecule to obtain the final product dixylylpropane.

Abstract: A process for producing an alkyl-substituted aromatic hydrocarbon, which comprises alkylating an aromatic hydrocarbon with an alkylating agent in the presence of a heteropoly-acid or a salt thereof such as phosphorus tungstate and silicon tungstate as a catalyst. The process is particularly useful for preparing alkyl-substituted naphthalene or naphthalene derivatives.

Abstract: It is disclosed that aromatic compounds can be alkylated with mono-olefinic HVI-PAO dimer in contact with an acidic catalyst to produce novel alkylated aromatic compositions. It has been found that the novel HVI-PAO dimer alkylated aromatic compositions exhibit an extraordinary combination of properties relating to low viscosity with high viscosity index and low pour point which renders them very useful as lubricant basestock. Further, it has been found that the novel alkylaromatic compositions of the present invention show improved oxidative stability. Depending upon the substituent groups on the aromatic nucleus, useful lubricant additives can be prepared for improved antiwear, antioxidant and other properties. HVI-PAO dimer is prepared as a product or by-product from 1-alkene oligomerization using reduced chromium oxide on solid support.

Abstract: 1-Aminoanthraquinone (1-AAQ) is synthesized by the reaction of 2-chlorobenzyl chloride and xylene in the presence of a solid acid catalyst to yield 2-chloro dimethyldiphenylmethane, subsequent oxidation of the methyl groups, ring closure to form a 1-chloroanthraquinone carboxylic acid, replacement of the 1-chloro group with ammonia, and decarboxylation.

Abstract: Ethylbenzene is produced by the alkylation of benzene with ethylene in the presence of an alkylation catalyst which comprises an inorganic, non-layered, porous, crystalline phase aluminosilicate material whcih exhibits a benzene adsorption capacity of greater than about 15 grams benzene per 100 grams at 50 torr and 25.degree. C. In its preferred catalytic form, the crystalline material has a uniform, hexagonal arrangement of pores with diameters of at least about 13 .ANG. and exhibiting, after calcination, an X-ray diffraction pattern with at least one d-spacing greater than about 18 A and a hexagonal electron diffraction pattern that can be indexed with a d.sub.100 value greater than about 18 .ANG. which corresponds to at least one peak in the X-ray diffraction pattern. The process is typically carried out at a temperatue of 200.degree. to 1000.degree. F. but the catalyst provides sufficient activity for the reaction to be carried out at temperatures below 700.degree. F.

Abstract: A method for preparing .alpha.-(4-isobutylphenyl)propionic acid or its precursor is here disclosed which comprises a step A of forming p-isobutylstyrene from p-isobutylethylbenzene and a step B of forming .alpha.-(4-isobutylphenyl)propionaldehyde from p-isobutylstyrene or a step C of forming .alpha.-(4-isobutylphenyl)propionic acid or its alkyl ester from p-isobutylstyrene.Furthermore, a method for preparing said p-isobutylethylbenzene is also disclosed which comprises alkylating isobutylbenzene or 4-ethyltoluene with ethylene or propylene.

Abstract: A hydrocarbon conversion process which utilizes a solid phosphoric acid catalyst having a total X-ray intensity of at least 40 percent relative to alpha-alumina. The solid phosphoric acid catalyst is produced by crystallizing an amorphous mixture of an acid oxide of phosphorus and a siliceous material at a temperature of from 350.degree. to 450.degree. C. and in the presence of from 10 to 50 mole percent water vapor based upon the total vapor rate to the crystallizing means. Embodiments of the new hydrocarbon conversion process include alkylation, oligomerization, and hydration, of hydrocarbons and oxygenated hydrocarbons.

Abstract: Catalyst particles which are employed in reactions involving the conversion of organic compounds should possess a desired configuration in order to maintain a desired voidage which will permit passage of the feedstock through the catalyst bed during the conversion reaction. Solid phosphoric acid catalysts which comprise an admixture of an acid of phosphorus and a solid binder such as a siliceous material may be formed into polylobular, tubular, ridged, fluted, or channeled cylindrical particles which will permit a sufficient amount of voidage in the catalyst bed to be maintained even though the catalyst particles will swell during the reaction due to the formation of coke on the surface thereof.

Abstract: This invention relates to a process for alkylation at carbon and phosphorus sites in an aqueous medium using precious metal catalysts containing sulfonated triarylphosphines (STP) of the generic formula P(C.sub.6 H.sub.4 SO.sub.3 --)X(C.sub.6 H.sub.5)Y (X+Y=3).

Abstract: The selective isopropylation of a naphthyl compound to diisopropylnaphthalene enhanced in the 2,6-diisopropylnaphthalene isomer is obtained in the presence of an acidic crystalline molecular sieve catalyst having twelve membered oxygen rings. The catalyst pore aperture dimension range from 5.5 .ANG. to 7.0 .ANG.. The user of these shape selective catalysts results in a diisopropylnephthalene stream which is enhanced in .beta. isomers and enhanced in the desired 2,6-diisopropylnaphthalene isomer. A particularly preferred catalyst is synthetic Mordenite having a specific Si/Al ratio and NMR characteristics. Specific catalyst modifications are also described to improve selectivity to the desired 2,6-diisopropylnaphthalene isomer.

Abstract: The selective isopropylation of biphenyl or 4-isopropylbiphenyl to diisopropylbiphenyl while maximizing the yield of the 4,4'-diisopropoylbiphenyl isomer is achieved by carrying out the reaction in the presence of an acidic crystalline molecular sieve with pore aperture 5.7-6.1 .ANG., preferably SAPO-11 or ZSM-12.

Abstract: The selective isopropylation of a naphthyl compound to diisopropylnaphthalene enhanced in the 2,6-diisopropylnaphthalene isomer is obtained in the presence of an acidic crystalline molecular sieve catalyst having twelve membered oxygen rings. The catalyst pore aperture dimension ranges from 5.5 .ANG. to 7.0 .ANG.. The use of these shape selective catalysts results in a diisopropylnaphthalene stream which is enhanced in .beta. isomers and enhanced in the desired 2,6-diisopropylnaphthalene isomer. A particularly preferred catalyst is synthetic Mordenite. Specific catalyst modifications are also described to improve selectivity to the desired 2,6-diisopropylnaphthalene isomer.

Abstract: A process for the selective manufacture of 2,6-diisopropylnaphthalene from naphthalene advantageously combines an equilibration reactor to enhance the amount of monoisopropylnaphthalene fed to the alkylation reactor, and the use of a shape selective catalyst in the alkylation reactor, to obtain an alkylation reaction product in which the 2,6-diisopropylnaphthalene isomer comprises greater than 39 mole percent of the total diisopropylnaphthalene obtained. Further, this combination of reaction steps and conditions produces a reaction product in which the ratio of 2,6-diisopropylnaphthalene to 2,7-diisopropylnaphthalene is greater than 1.0, preferably greater than 1.2. Recycled process components are fed to the equilibration reactor where they are combined with fresh naphthalene feed to provide a monoisopropylnaphthalene enriched feed to the alkylation reactor.

Abstract: A process for the production of 2,6-diisopropylnaphthalene is disclosed wherein an isopropylation reaction mixture containing isopropylated naphthalenes is subjected to transalkylation with a triisopropylnaphthalene-containing mixture to obtain a mixture containing mono-, di- and tri-isopropylnaphthalenes which is then separated into a first fraction containing monisopropylnaphthalenes, a second fraction containing diisopropylnaphthalenes and a third fraction containing triisopropylnaphthalenes. The first and third fractions are recycled to the above system, while the second fraction is subjected to separation treatments for the recovery of 2,6-diisopropylnaphthalene. The second fraction from which 2,6-diisopropylnaphthalene has been removed is subjected to transalkylation with naphthalene to obtain a monoisopropylnaphthalene-rich mixture which is to be fed to the isopropylation step.

Abstract: A solid phosphoric acid catalyst having a total X-ray intensity of at least 30 percent relative to alpha-alumina. The solid phosphoric acid catalyst is produced by crystallizing an amorphous mixture of an acid oxide of phosphorus and a siliceous material at a temperature of from 250.degree. to 450.degree. C. and in the presence of from 3 to 50 mole percent water vapor based upon the total vapor rate to the crystallizing means.

Abstract: A novel solid phosphoric acid catalyst composition, and process for using the catalyst is disclosed. The composite comprises solid phosphoric acid and a refractory oxide binder. The composite is characterized in that 25.0 volume percent or less of the total catalyst pore volume consists of pores having a diameter of 10,000 .ANG. or greater. An improvement in catalyst stability is observed when such a catalyst is utilized in a hydrocarbon conversion process.

Abstract: A method for regenerating a spent porous crystalline catalyst, optionally associated with a metal component such as noble and/or base metal(s), is described. The method comprises contacting the spent catalyst which has become deactivated by accumulation of carbonaceous residue with one or more light aromatic compounds under conditions resulting in reactivation of said catalyst. The light aromatic compounds employed are ones which have the capability of penetrating the catalyst, so as to contact the carbonaceous residue contained therein, undergoing alkylation by alkyl fragments contributed by components of the carbonaceous residue and diffusing from or otherwise escaping the catalyst.

Abstract: Crystalline molecular sieves having three-dimensional microporous framework structures of TiO.sub.2, AlO.sub.2, SiO.sub.2 and PO.sub.2 tetrahedral units are disclosed. These molecular sieves have an empirical chemical composition on an anhydrous basis expressed by the formula:mR: (Ti.sub.w Al.sub.x P.sub.y Si.sub.z)O.sub.2wherein "R" represents at least one organic templating agent present in the intracrystalline pore system; "m" represents the molar amount of "R" present per mole of (Ti.sub.w Al.sub.x P.sub.y Si.sub.z)O.sub.2 ; and "w", "x", "y" and "z" represent the mole fractions of titanium, aluminum, phosphorus and silicon, respectively, present as tetrahedral oxides. Their use as adsorbents, catalysts, etc. is also disclosed.

Abstract: A novel family of crystalline, microporous gallophosphate compositions is synthesized by hydrothermal crystallization at elevated temperatures from gallophosphate gels containing a molecular structure-forming template. The family comprises distinct species, each with a unique crystal structure. Calcination removed volatile extraneous matter from the intracrystalline void space and yields microporous crystalline adsorbents with pores, the dimensions of which vary, among the individual species, from about 3A to 10A in diameter. The compositions represent a new class of adsorbents of the molecular sieve type, and also exhibit properties somewhat analogous to zeolitic molecular sieves which render them useful as catalysts or catalyst based in chemical reactions such as hydrocarbon conversion.

Abstract: An alkylation-transalkylation process for the production of a monoalkylated aromatic compound is disclosed which maximizes the production of desirable monoalkylaromatic compounds, while limiting transalkylation catalyst deactivation. The process entails the combination of an alkylation reaction zone, a first seperation zone, a second separation zone, and a transalkylation reaction zone wherein the alkylation catalyst and transalkylation catalyst are dissimilar and where the alkylation catalyst is comprised of phosphoric acid material and the transalkylation catalyst is comprised of a crystalline aluminosilicate material. The transalkylation catalyst deactivation is reduced by transalkylating only dialkylated aromatic compounds. Additionally, the transalkylation catalyst is regenerable utilizing a hot liquid hydrocarbon wash.

Abstract: Molecular sieve compositions having three-dimensional microporous framework structures of CrO.sub.2, AlO.sub.2 and PO.sub.2 tetrahedral oxide units are disclosed. These molecular sieves have an empirical chemical composition on an anhydrous basis expressed by the formula:mR: (Cr.sub.x Al.sub.Y P.sub.z)O.sub.2wherein "R" represents at least one organic templating agent present in the intracrystalline pore system; "m" represents the molar amount of "R" present per mole of (Cr.sub.x Al.sub.y P.sub.z)O.sub.2 ; and "x", "y" and "z" represents the mole fractions of chromium, aluminum and phosphorus, respectively, present as tetrahedral oxides. Their use as adsorbents, catalysts, etc. is also disclosed.

Abstract: Crystalline molecular sieves having three-dimensional microporous framework structures of MnO.sub.2, AlO.sub.2, SiO.sub.2 and PO.sub.2 tetrahedral oxide units are disclosed. These molecular sieves have an empirical chemical composition on an anhydrous basis expressed by the formula:mR: (Mn.sub.w Al.sub.x P.sub.y Si.sub.z)O.sub.2wherein "R" represents at least one organic templating agent present in the intracrystalline pore system; "m" represents the molar amount of "R" present per mole of (Mn.sub.w Al.sub.x P.sub.y Si.sub.z)O.sub.2 ; and "w", "x", "y" and "z" represent the mole fractions of manganese, aluminum, phosphorus and silicon, respectively, present as tetrahedral oxides. Their use as adsorbents, catalysts, etc. is also disclosed.

Abstract: Crystalline molecular sieves having three-dimensional microporous framework structures of CoO.sub.2, AlO.sub.2, SiO.sub.2, PO.sub.2 and tetrahedral units are disclosed. These molecular sieves have an empirical chemical composition on an anhydrous basis expressed by the formula:mR: (Co.sub.w Al.sub.x P.sub.y Si.sub.z)O.sub.2wherein "R" represents at least one organic templating agent present in the intracrystalline pore system; "m" represents the molar amount of "R" present per mole of (Co.sub.w Al.sub.x P.sub.y Si.sub.z)O.sub.2 ; and "w", "x", "y" and "z" represent the mole fractions of cobalt, aluminum, phosphorus and silicon, respectively, present as tetrahedral oxides. Their use as adsorbents, catalysts, etc. is also disclosed.

Abstract: Molecular sieve compositions having three-dimensional microporous framework structures of LiO.sub.2, AlO.sub.2 and PO.sub.2 tetrahedral oxide units are disclosed. These molecular sieves have an empirical chemical composition on an anhydrous basis expressed by the formula:mR: (Li.sub.x Al.sub.y P.sub.z)O.sub.2wherein "R" represents at least one organic templating agent present in the intracrystalline pore system; "m" represents the molar amount of "R" present per mole of (Li.sub.x Al.sub.y P.sub.z)O.sub.2 ; and "x", "y" and "z" represent the mole fractions of lithium, aluminum and phosphorus, respectively, present as tetrahedral oxides. Their use as adsorbents, catalysts, etc. is also disclosed.

Abstract: A hydrocarbon conversion process is disclosed which extends the useful life of a regenerable zeolite-containing hydrocarbon conversion catalyst. In one aspect of this process, a hydrocarbon feed containing fluorides is passed through a fluoride removal system which reduces the fluoride concentration of the feed to below 100 ppb. The hydrocarbon feed containing less than 100 ppb fluorine is then converted over a regenerable zeolite-containing hydrocarbon conversion catalyst. The zeolite-containing hydrocarbon conversion catalyst is regenerated with an oxygen-containing gas stream as necessary to burn off carbonaceous deposits on the catalyst so as to return the zeolite catalyst to a high level of activity.

Abstract: Crystalline molecular sieves having three-dimensional microporous framework structure of MO.sub.2, AlO.sub.2, and PO.sub.2 tetrahedral oxide units are disclosed. These molecular sieves have an empirical chemical composition on an anhydrous basis are expressed by the formula:mR: (M.sub.x Al.sub.y P.sub.z)O.sub.2wherein "R" represents at least one organic templating agent present in the intracrystalline pore system; "m" represents the molar amount of "R" present per mole of (M.sub.x Al.sub.y P.sub.z)O.sub.2 ; "M" represents at least two elements capable of forming framework tetrahedral oxides and selected from the group consisting of arsenic, beryllium, boron, chromium, gallium, germanium, lithium and vanadium; and "x", "y" and "z" represent the mole fractions of "M", aluminum and phosphorus, respectively, present as tetrahedral oxides. Their use as adsorbents, catalysts, etc. is disclosed. The catalyst is useful in the cracking and hydrocracking of various hydrocarbonaceous feeds.

Abstract: An alkylation-transalkylation process for the production of a monoalkylated aromatic compound is disclosed which maximizes the production of desirable monoalkylaromatic compounds, while limiting transalkylation catalyst deactivation. The process entails the combination of an alkylation reaction zone, a first separation zone, a second separation zone, and a transalkylation reaction zone wherein the alkylation catalyst and transalkylation catalyst are dissimilar and where the alkylation catalyst is comprised of phosphoric acid material and the transalkylation catalyst is comprised of a crystalline aluminosilicate material. The transalkylation catalyst deactivation is reduced by transalkylating only dialkylated aromatic compounds.

Abstract: Novel class of crystalline microporous ferroaluminophosphate compositions containing as lattice constituents in addition to AlO.sub.2 and PO.sub.2 structural units, ferric and/or ferrous iron in tetrahedral coordination with oxygen atoms. These compositions are prepared hydrothermally using organic templating agents and are suitably employed as catalysts or adsorbents.

Abstract: Hydrocarbon conversion processes including hydrocracking and hydrotreating are performed utilizing a novel phosphorus-modified alumina composite comprising a hydrogel having a molar ratio on an elemental basis of phosphorus to aluminum of from 1:1 to 1:100 together with a surface area of about 140 to 450 m.sup.2 /gm. The composite is prepared by admixing an alumina hydrosol with a phosphorus-containing compound to form a phosphorus-modified sol and gelling said admixture.

Abstract: A process flow is presented for a hydrocarbon conversion process in which a relatively volatile hydrocarbon is separated from less volatile feed and product hydrocarbons present in a reaction zone effluent stream. The preferred usage is in the alkylation of benzene with propylene. The reaction zone effluent stream is passed into a lower portion of a rectified separation zone. Recycle aromatic hydrocarbon is passed into a contact exchanger/absorber present in the top portion of the rectified separation zone. The liquid collected at the bottom of the contact exchanger is removed as a sidecut stream and passed into the reaction zone.

Abstract: Alkenyl-aromatic hydrocarbon derivatives are prepared by reaction of an aromatic hydrocarbon with an alkenyl-aromatic hydrocarbon in the presence of a heteropoly acid and/or a salt thereof.

Abstract: Porous crystalline magnesium silicates modified by addition of phosphorus in an amount from about 0.25 percent to about 30 percent by weight.

Abstract: Titanium-containing molecular sieves are disclosed having use as molecular sieves and as catalyst compositions in hydrocarbon conversion and other processes the instant invention employs novel titanium-containing molecular sieves comprising titanium, aluminum, phosphorus and oxygen and are generally employable in separation and hydrocarbon conversion processes.