Al Oxide, E.g., Aluminosilicate, Etc. Patents (Class 585/533)
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Patent number: 7678953Abstract: A process for producing a hydrocarbon composition that comprises contacting a feed stream, that comprises at least one C3 to C8 olefin, and an olefinic recycle stream, that comprises a first olefinic recycle stream and no more than 10 wt % of C10+ non-normal olefins, with a molecular sieve catalyst in a reaction zone under olefin oligomerization conditions producing an oligomerization effluent stream; separating the oligomerization effluent stream to produce a first olefinic stream, that has a weight ratio of C4?/(C5-C8) molecules from about 0.8 to about 1.2 times the weight ratio of C4?/(C5-C8) molecules found in the oligomerization effluent stream, and a first hydrocarbon product stream, that comprises at least 1 wt % and no more than 30 wt % of C9 non-normal olefin; and splitting the first olefinic stream to produce the first olefinic recycle stream and a first purge stream.Type: GrantFiled: January 27, 2006Date of Patent: March 16, 2010Assignee: ExxonMobil Chemical Patents Inc.Inventors: Keith H. Kuechler, Stephen Harold Brown, An Amandine Verberckmoes, Marc P. Puttemans, Steven E. Silverberg
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Patent number: 7667086Abstract: A hydrocarbon fluid composition that comprises species of at least two different carbon numbers, an aerobic biodegradability of greater than 40% at 28 days, a cetane number of less than 60, and a certain boiling point range; and a process for making the hydrocarbon fluid composition.Type: GrantFiled: January 27, 2006Date of Patent: February 23, 2010Assignee: ExxonMobil Chemical Patents Inc.Inventors: Ralph M. Kowalik, Thomas A. Gribschaw, Keith H. Kuechler, Ronald R. Hill, Jr.
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Patent number: 7663011Abstract: A process for treating organic compounds includes providing a composition which includes a substantially mesoporous structure of refractory oxide containing at least 97% by volume of pores having a pore size ranging from about 15 ? to about 30 ? and having a micropore volume of at least about 0.01 cc/g, wherein the mesoporous structure has incorporated therewith at least about 0.02% by weight of at least one catalytically and/or chemically active heteroatom selected from the group consisting of Al, Ti, V, Cr, Zn, Fe, Sn, Mo, Ga, Ni, Co, In, Zr, Mn, Cu, Mg, Pd, Pt and W, and the catalyst has an X-ray diffraction pattern with one peak at 0.3° to about 3.5° at 2 theta (?). The catalyst is contacted with an organic feed under reaction conditions wherein the treating process is selected from alkylation, acylation, oligomerization, selective oxidation, hydrotreating, isomerization, demetalation, catalytic dewaxing, hydroxylation, hydrogenation, ammoximation, isomerization, dehydrogenation, cracking and adsorption.Type: GrantFiled: August 5, 2005Date of Patent: February 16, 2010Assignee: Lummus Technology Inc.Inventors: Zhiping Shan, Jacobus Cornelis Jansen, Chuen Y. Yeh, Philip J. Angevine, Thomas Maschmeyer, Mohamed S. Hamdy
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Patent number: 7632976Abstract: This invention covers a process for making Octene from nix C4 Feed by a low cost highly selective multistage process. The multi staging of reactors essentially provides lower cost than conventional processes. Two options are provided in FIGS. 1 and 2 as regards to configuration based on the same catalyst but as can be seen that FIG. 1 configuration is low cost option with very high selectivity. The process provides conversion of butene to Octene >95% and product purity >96%. Product can be fractionated and can have a high purity Octene product by removing the trimers/polymers from the octene product. As mentioned due to the nature of the process configuration, one achieves high yield and selectivity with low cost.Type: GrantFiled: September 29, 2006Date of Patent: December 15, 2009Inventor: Amarjit Singh Bakshi
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Patent number: 7626066Abstract: An oligomerization process in which hydrocarbon feedstocks are contacted with a hydrotreating catalyst in the absence of hydrogen and in the liquid phase. The catalyst is a heterogeneous catalyst selected from supported reduced metals, metals oxides, metal sulfides and combinations thereof. Preferred catalysts include mixed nickel and molybdenum oxides or mixed cobalt and molybdenum oxides. The process also oligomerizes sulfur compounds so that sulfur containing feedstocks can be treated without deactivating the catalysts.Type: GrantFiled: March 9, 2007Date of Patent: December 1, 2009Assignee: ExxonMobil Oil CorporationInventors: Stephen H. Brown, Robert A. Crane, Jr., Robert J. Saxton, William A. Weber
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Patent number: 7622621Abstract: In a process for preparing an alkylaromatic hydrocarbon composition an olefinic hydrocarbon mixture and an aromatic compound are contacted under alkylation conditions with an aromatic alkylation catalyst selected from a homogeneous acid catalyst and heterogeneous acid catalyst comprising a molecular sieve having an X-ray diffraction pattern including d-spacing maxima at 12.4±0.25, 6.9±0.15, 3.57±0.07 and 3.42±0.07 Angstroms. The olefinic hydrocarbon mixture comprises at least 5 wt % by weight of mono-olefin oligomers of the empirical formula: CnH2n wherein n is greater than or equal to 10, the mono-olefin oligomers comprising at least 20 percent by weight of olefins having at least 12 carbon atoms, and the olefins having at least 12 carbon atoms having an average of from 0.8 to 2.0 C1-C3 alkyl branches per carbon chain.Type: GrantFiled: March 28, 2003Date of Patent: November 24, 2009Assignee: ExxonMobil Chemical Patents Inc.Inventors: Carolyn B. Duncan, David Wayne Turner, Jane C. Cheng, Charles M. Yarbrough, Raphael Frans Caers, Ramzi Y. Saleh, James L. Propp
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Patent number: 7622032Abstract: The present invention relates to new crystalline molecular sieve SSZ-74 prepared using an hexamethylene-1,6-bis-(N-methyl-N-pyrrolidinium) dication as a structure-directing agent, and processes employing SSZ-74 in a catalyst.Type: GrantFiled: December 21, 2006Date of Patent: November 24, 2009Assignee: Chevron U.S.A. Inc.Inventors: Stacey I. Zones, Allen W. Burton, Jr.
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Publication number: 20090281361Abstract: The present invention provides a process for conversion of feedstock comprising organic compounds to desirable conversion product at organic compound conversion conditions in the presence of catalyst comprising an acidic, porous crystalline material and having a Proton Density Index of greater than 1.0, for example, from greater than 1.0 to about 2.0, e.g. from about 1.01 to about 1.85. The acidic, porous crystalline material of the catalyst may comprise a porous, crystalline material or molecular sieve having the structure of zeolite Beta, an MWW structure type material, e.g. MCM-22, MCM-36, MCM-49, MCM-56, or a mixture thereof.Type: ApplicationFiled: May 8, 2006Publication date: November 12, 2009Inventors: Michael C. Clark, Teng Xu, Matthew J. Vincent
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Patent number: 7615673Abstract: A process for the oligomerization of propylene is disclosed wherein MCM-22 zeolite prepared as a distillation structure is used in a reaction distillation zone under conditions of temperature and pressure to concurrently react the propylene to produce oligomers thereof and separate the oligomer products from unreacted propylene by fractional distillation in a distillation column reactor. Compared to the prior art tubular or plug flow reactors, lower temperatures and pressures are used to produce higher conversions and selectivities to preferred isomeric forms.Type: GrantFiled: September 8, 2006Date of Patent: November 10, 2009Assignees: Catalytic Distillation Technologies, ExxonMobil Chemical Patents Inc.Inventors: Mitchell E. Loescher, Christopher C. Boyer, Michael J. Keenan, Jon E. R. Stanat
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Patent number: 7572946Abstract: An olefin oligomerization process employs a particular silica-alumina catalyst which comprises a non zeolitic support based on silica-alumina containing a quantity of more than 5% by weight and 95% by weight or less of silica (SiO2) and has the following characteristics: a mean pore diameter, measured by mercury porosimetry, in the range 20 to 140 ?; a total pore volume, measured by mercury porosimetry, in the range 0.1 ml/g to 0.6 ml/g; a total pore volume, measured by nitrogen porosimetry, in the range 0.1 ml/g to 0.6 ml/g; a BET specific surface area in the range 100 to 550 m2/g; a pore volume, measured by mercury porosimetry, included in pores with a diameter of more than 140 ?, of less than 0.1 ml/g; a pore volume, measured by mercury porosimetry, included in pores with a diameter of more than 160 ?, of less than 0.1 ml/g; a pore volume, measured by mercury porosimetry, included in pores with a diameter of more than 200 ?, of less than 0.Type: GrantFiled: July 15, 2005Date of Patent: August 11, 2009Assignee: Institut Francais du PetroleInventors: Sylvie Lacombe, Renaud Revel, Patrick Briot, Eric Llido, Patrick Euzen, Carole Bobin
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Patent number: 7572947Abstract: The invention is directed to a method of selectively oligomerizing olefin monomers by controlling feedstock composition and reaction conditions. Reaction conditions are chosen to include at least one of: (a) dimer recycle; (b) staged injection of monomer; and (c) utilization of a two catalyst system.Type: GrantFiled: August 7, 2006Date of Patent: August 11, 2009Assignee: ExxonMobil Chemical Patents Inc.Inventors: Stephen Harold Brown, Georges Marie Karel Mathys, Paul Hamilton
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Publication number: 20090192342Abstract: A process for oligomerizing an olefinic hydrocarbon feed is described which consists of bringing said feed into contact with a catalyst comprising a silica-alumina, the silica content of said catalyst being in the range 5% to 95% by weight, said catalyst being prepared using a process comprising at least: a) mixing at least one alumina compound which is partially soluble in an acid medium with either at least one silica compound which is completely soluble in the reaction mixture or a combination formed by at least one silica compound and at least one alumina compound, said silica and alumina compounds being completely soluble in the reaction mixture, in order to form a solid precursor of said catalyst; b) hydrothermal treatment of the solid derived from step a) by calcining in moist air for a period in the range 4 to 7 hours.Type: ApplicationFiled: January 27, 2009Publication date: July 30, 2009Applicant: IFPInventors: Vincent COUPARD, Alexandra Chaumonnot, Laurent Simon
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Patent number: 7541507Abstract: Sulphur-containing olefinic feedstocks are oligomerized over zeolite catalysts.Type: GrantFiled: January 9, 2007Date of Patent: June 2, 2009Assignee: Exxonmobil Chemical Patents Inc.Inventors: Jihad Mohammed Dakka, Hans K. T. Goris, Georges M. K. Mathys, Roger Eijkhoudt, Marc P. H. Puttemans, Stephen Harold Brown
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Publication number: 20090112036Abstract: A process for oligomerizing isobutene includes contacting a feedstock including isobutene with a catalyst comprising an EMM-10 molecular sieve under conditions effective to oligomerize said isobutene and produce an effluent containing less isobutene than the feedstock.Type: ApplicationFiled: October 26, 2007Publication date: April 30, 2009Inventors: Jane C. Cheng, Ivy D. Johnson, Wieslaw J. Roth, Michael C. Kerby
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Patent number: 7525002Abstract: A process for the production of high octane number gasoline from light refinery olefins, typically from the catalytic cracking unit, and benzene-containing aromatic streams such as reformate. A portion of the light olefins including ethylene and propylene is polymerized to form a gasoline boiling range product and another portion is used to alkylate the light aromatic stream. The alkylation step may be carried out in successive stages with an initial low temperature stage using a catalyst comprising an MWW zeolite followed by a higher temperature stage using a catalyst comprising an intermediate pore size zeolite such as ZSM-5. Using this staged approach, the alkylation may be carried out in the vapor phase. Alternatively, the alkylation may be carried out in the liquid phase using the heavier olefins (propylene, butene) dissolved into the aromatic stream by selective countercurrent extraction; a separate alkylation step using the ethylene not taken up in the extraction is carried out at a higher temperature.Type: GrantFiled: February 27, 2006Date of Patent: April 28, 2009Assignee: ExxonMobil Research and Engineering CompanyInventors: Benjamin S. Umansky, Michael C. Clark, Ajit B. Dandekar
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Publication number: 20090093663Abstract: A substantially surface-deactivated catalyst composition that is stable at least to 300° C. The catalyst includes a zeolite catalyst (e.g., ZSM-22, ZSM-23, or ZSM-57) having active internal Brönsted acid sites and a surface-deactivating amount of a rare earth or yttrium oxide (e.g., chosen from lanthanum oxide or lanthanides oxide). This catalyst is preferably used in a process for producing a higher olefin by oligomerizing a light olefin, wherein the process includes contacting a light olefin under oligomerization conditions with the substantially surface-deactivated catalyst composition.Type: ApplicationFiled: October 5, 2007Publication date: April 9, 2009Inventors: Jane C. Cheng, Sal Miseo, Stuart L. Soled, John S. Buchanan, Jennifer S. Feeley
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Patent number: 7507868Abstract: In a process for oligomerizing a C2 to C6 n-olefin feedstock over surface deactivated ZSM-23, the feedstock contains from about 0.1 wt % to about 25 wt % of an iso-olefin and the C12+ fraction of the oligomerized olefin product contains less than 0.5 atom % of quaternary carbon atoms.Type: GrantFiled: March 28, 2003Date of Patent: March 24, 2009Assignee: ExxonMobil Chemical Patents Inc.Inventors: Carolyn B. Duncan, Raphael Frans Caers, David W. Turner, Michael J. Keenan, Ernest E. Green, Ramzi Y. Saleh
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Patent number: 7501548Abstract: The invention relates to the use of isobutene-containing olefin feedstock in oligomerization reactions, particularly in the production of octenes as feedstock for the manufacture of plasticizer alcohols, the process comprising contacting a feed comprising isobutene with a molecular sieve at a temperature in excess of 240° C. to produce a product low in triple-branched octenes.Type: GrantFiled: March 10, 2006Date of Patent: March 10, 2009Assignee: ExxonMobil Chemical Patents Inc.Inventors: Stephen Harold Brown, Georges Marie Mathys
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Patent number: 7459073Abstract: The present invention relates to new crystalline molecular sieve SSZ-47B prepared using a N-cyclopentyl-1,4-diazabicyclo[2.2.2] octane cation as a structure-directing agent and an amine too large to fit in the pores of the molecular sieve nonasil, methods for synthesizing SSZ-47B and processing employing SSZ-47B in a catalyst.Type: GrantFiled: December 23, 2003Date of Patent: December 2, 2008Assignee: Chevron U.S.A. Inc.Inventors: Allen W. Burton, Jr., Stacey I. Zones
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Patent number: 7425662Abstract: A selectivated molecular sieve, e.g., ZSM-22 or ZSM-23, is used as olefin oligomerization catalyst to provide product, e.g., octenes and dodecenes from butene, having a low degree of branching and hindered double bonds.Type: GrantFiled: March 28, 2003Date of Patent: September 16, 2008Assignee: ExxonMobil Chemical Patents Inc.Inventors: Jon E. Stanat, Georges M. K. Mathys, David Wayne Turner, Jane C. Cheng, Stephen W. Beadle, Cesar M. Cheng Guajardo, Roger Eijkhoudt, Allen D. Godwin, Ernest E. Green, Charles M. Yarbrough, Raphael Frans Caers, Carolyn B. Duncan, Ramzi Y. Saleh
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Patent number: 7420096Abstract: Limiting the sulphur level in olefin feedstocks to zeolite-catalysed oligomerization enhances selectivity to trimer and catalyst life and activity.Type: GrantFiled: June 18, 2007Date of Patent: September 2, 2008Assignee: ExxonMobil Chemical Patents Inc.Inventors: Jihad Mohammed Dakka, Georges M. K. Mathys, Marc P. H. Puttemans
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Patent number: 7414165Abstract: In a process for oligomerizing an olefinic hydrocarbon feedstock comprising sulfur-containing molecules, the feedstock is contacted in the absence of hydrogen with a first metal oxide catalyst at a temperature in excess of 150° C. and then is contacted under olefin oligomerization conditions with a second catalyst comprising a crystalline molecular sieve, such as ZSM-22 or ZSM-57.Type: GrantFiled: June 29, 2007Date of Patent: August 19, 2008Assignee: ExxonMobil Chemical Patents Inc.Inventors: Jihad Mohammed Dakka, Hans K. T. Goris, Georges M. K. Mathys, Stephen Harold Brown, Bruce R. Cook
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Patent number: 7411108Abstract: A method for removing conjugated olefins from a composition comprising contacting the composition with a Diels-Alder dienophile to convert conjugated olefins to a Diels-Alder adduct and arresting the Diels-Alder adduct. A method comprising confining a Diels-Alder dienophile to a first side of a selectively permeable barrier wherein the barrier is more permeable to conjugated olefins and less permeable to Diels-Alder dienophile and Diels-Alder adduct, and contacting a composition comprising mono-olefins and conjugated olefins with the Diels-Alder dienophile to form Diels-Alder adduct, wherein the contacting reduces the concentration of conjugated olefins in the composition. A method for removing conjugated olefins from a composition comprising bubbling the composition through a liquid comprising Diels-Alder dienophile to form a liquid comprising Diels-Alder adduct.Type: GrantFiled: April 12, 2004Date of Patent: August 12, 2008Assignee: Chevron Phillips Chemical Company LPInventors: Saleh A. Elomari, Richard N. Reynolds, Jr., Steven J. Herron, Eduardo J. Baralt
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Patent number: 7351871Abstract: Process for producing poly-?-olefins are described wherein the processes comprise: (a) providing a primary alcohol; and (b) polymerizing the primary alcohol in the presence of an acidic alumino layer silicate to form a poly-?-olefin. Water formed during the polymerization can be removed, optionally during the polymerization, and subsequent hydrogenation may be performed.Type: GrantFiled: October 11, 2002Date of Patent: April 1, 2008Assignee: Cognis Deutschland GmbH & Co. KGInventors: Lars Zander, Alfred Westfechtel, Elke Grundt, Markus Dierker
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Patent number: 7345212Abstract: A process for preparing a substantially linear olefinic hydrocarbon mixture is described in which a lower olefin feed comprising one or more C3 to C6 lower olefins is contacted in the presence of water and under olefin oligomerization conditions with a catalyst comprising surface-deactivated ZSM-23.Type: GrantFiled: March 28, 2003Date of Patent: March 18, 2008Assignee: ExxonMobil Chemical Patents Inc.Inventors: Stephen W. Beadle, Georges M. K. Mathys, Cesar M. Cheng-Guajardo
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Publication number: 20070284284Abstract: The present invention relates to new crystalline molecular sieve SSZ-75 prepared using a tetramethylene-1,4-bis-(N-methylpyrrolidinium)dication as a structure-directing agent, and its use in catalysts for hydrocarbon conversion reactions.Type: ApplicationFiled: June 1, 2007Publication date: December 13, 2007Inventors: Stacey I. Zones, Allen W. Burton, Theodorus Ludovicus Michael Maesen, Berend Smit, Edith Beerdsen
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Publication number: 20070213575Abstract: Nitrogen-containing Lewis bases act as poisons for molecular sieve catalysts used in oligomerisation reactions. A lowering of their presence in the feed prior to the contacting thereof with the molecular sieve brings a significant extension of catalyst life. Excessive elimination of these poisons may be disadvantageous. Lowering the levels of these catalyst poisons to more manageable concentrations is therefore preferred.Type: ApplicationFiled: February 1, 2007Publication date: September 13, 2007Inventors: John Stephen Godsmark, Georges Marie Karel Mathys, Hubertus Joseph Beckers, Charles Morris Yarbrough, Stephen Harold Brown, Yeo-Meng Lim
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Patent number: 7259285Abstract: An oligomerization catalyst for olefins having from 2 to 6 carbon atoms is produced by treating aluminum oxide with a nickel compound and a sulfur compound, either simultaneously or firstly with the nickel compound an then with the sulfur compound, and subsequently drying and calcining the resulting catalyst, wherein a molar ratio of sulfur to nickel in the finished catalyst of from 0.25:1 to 0.38:1 is set in this way. The catalyst and its use are also described.Type: GrantFiled: November 16, 2000Date of Patent: August 21, 2007Assignee: BASF AktiengesellschaftInventors: Marc Walter, Thomas Heidemann
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Publication number: 20070191663Abstract: A method of making a crystalline molecular sieve of MFS framework type, said method comprising the steps of (a) adding at least one source of ions of tetravalent element (Y), at least one source of ions of trivalent element (X), at least one hydroxide source (OH?), at least one structure-directing-agent (R), at least one seed source (Seed), and water (H2O) to form a mixture having the following mole composition (expressed in term of oxide): YO2:(n)X2O3:(x)OH?:(y)R:(z)H2O+(m)Seed wherein the m is in the range of from about 10 wtppm to about 2 wt. % (based on total weight of the synthesis mixture), the n is in the range of from about 0.005 to 0.05, the x is in the range of from about 0.01 to about 0.3, the y is in the range of from about 0.Type: ApplicationFiled: January 29, 2007Publication date: August 16, 2007Inventors: Ivy D. Johnson, Machteld M. Mertens, An Verberckmoes
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Patent number: 7253330Abstract: In a process for oligomerizing an olefinic hydrocarbon feedstock comprising sulfur-containing molecules, the feedstock is contacted in the absence of hydrogen with a first metal oxide catalyst at a temperature in excess of 150° C. and then is contacted under olefin oligomerization conditions with a second catalyst comprising a crystalline molecular sieve, such as ZSM-22 or ZSM-57.Type: GrantFiled: April 29, 2003Date of Patent: August 7, 2007Assignee: ExxonMobil Chemical Patents Inc.Inventors: Jihad Mohammed Dakka, Hans K. T. Goris, Georges M. K. Mathys, Stephen Harold Brown, Bruce R. Cook
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Patent number: 7247763Abstract: Limiting the sulphur level in olefin feedstocks to zeolite-catalysed oligomerization enhances selectivity to trimmer and catalyst life and activity.Type: GrantFiled: October 23, 2002Date of Patent: July 24, 2007Assignee: ExxonMobil Chemical Patents Inc.Inventors: Jihad Mohammed Dakka, Georges M. K. Mathys, Marc P. H. Puttemans
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Patent number: 7205446Abstract: An oligomerization process in which hydrocarbon feedstocks are contacted with a hydrotreating catalyst in the absence of hydrogen and in the liquid phase. The catalyst is a heterogeneous catalyst selected from supported reduced metals, metals oxides, metal sulfides and combinations thereof. Preferred catalysts include mixed nickel and molybdenum oxides or mixed cobalt and molybdenum oxides. The process also oligomerizes sulfur compounds so that sulfur containing feedstocks can be treated without deactivating the catalysts.Type: GrantFiled: December 22, 2004Date of Patent: April 17, 2007Assignee: ExxonMobil Chemical Patents Inc.Inventors: Stephen H. Brown, Robert A. Crane, Jr., Robert J. Saxton, William A. Weber
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Patent number: 7186874Abstract: Sulphur-containing olefinic feedstocks are oligomerized over zeolite catalysts.Type: GrantFiled: October 23, 2002Date of Patent: March 6, 2007Assignee: ExxonMobil Chemical Patents Inc.Inventors: Jihad Mohammed Dakka, Hans K. T. Goris, Georges M. K. Mathys, Roger Eijkhoudt, Marc P. H. Puttemans, Stephen Harold Brown
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Patent number: 7151199Abstract: Hydrocarbon or oxygenate conversion process in which a feedstock is contacted with a non zeolitic molecular sieve which has been treated to remove most, if not all, of the halogen contained in the catalyst. The halogen may be removed by one of several methods. One method includes heating the catalyst in a low moisture environment, followed by contacting the heated catalyst with air and/or steam. Another method includes steam-treating the catalyst at a temperature from 400° C. to 1000° C. The hydrocarbon or oxygenate conversion processes include the conversion of oxygenates to olefins, the conversion of oxygenates and ammonia to alkylamines, the conversion of oxygenates and aromatic compounds to alkylated aromatic compounds, cracking and dewaxing.Type: GrantFiled: June 10, 2002Date of Patent: December 19, 2006Assignee: ExxonMobil Chemical Patents Inc.Inventors: Luc Roger Marc Martens, Stephen N. Vaughn, Albert Edward Schweizer, John K. Pierce, Shun Chong Fung
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Patent number: 7148388Abstract: In a process for preparing an olefinic hydrocarbon mixture comprising at least 5% by weight of mono-olefin oligomers of the empirical formula: CnH2n where n is greater than or equal to 6, a feedstock comprising n-butene and propylene in a molar ratio of about 1:0.01 to about 1:0.49 is contacted under oligomerization conditions with surface deactivated ZSM-23. The resultant mono-olefin oligomers comprise at least 20 percent by weight of olefins having at least 12 carbon atoms, wherein said olefins having at least 12 carbon atoms have an average of from about 0.8 to about 2.0 C1–C3 alkyl branches per carbon chain.Type: GrantFiled: March 28, 2003Date of Patent: December 12, 2006Assignee: ExxonMobil Chemical Patents Inc.Inventors: Stephen W. Beadle, Cesar M. Cheng-Guajardo, Carolyn B. Duncan, David Wayne Turner, Ramzi Y. Saleh
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Patent number: 7145049Abstract: Alkenes, such as normal butenes in a mixed C4 stream are oligomerized, preferably to dimers, which are dimerized in a distillation column reactor over ZSM-57 zeolite catalyst at high conversions and high selectivity to octenes. Prior to oligomerization the mixed C4 stream is pretreated to remove dimethyl ether, butadienes and sulfur compounds.Type: GrantFiled: July 23, 2004Date of Patent: December 5, 2006Assignees: Catalytic Distillation Technologies, Exxonmobil Chemical Patents, Inc.Inventors: Mitchell E. Loescher, David G. Woods, Michael J. Keenan, Steven E. Silverberg, Paul W. Allen
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Patent number: 7115198Abstract: A novel crystalline aluminophosphate and metalloaluminophosphate of the molecular sieve type, denominated SSZ-51, is prepared by hydrothermal synthesis from reactive sources of aluminum and phosphorus, fluorine and an organic templating agent, 4-dimethylaminopyridine. SSZ-51 is useful in catalysts for, e.g., hydrocarbon conversion reactions.Type: GrantFiled: October 22, 2003Date of Patent: October 3, 2006Assignee: Chevron U.S.A. Inc.Inventors: Stacey I. Zones, Thomas V. Harris
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Patent number: 7112711Abstract: A process for oligomerising alkenes having from 3 to 6 carbon atoms which comprises contacting a feedstock comprising a) one or several alkenes having x carbon atoms, and, b) optionally, one or several alkenes having y carbon atoms, x and y being different, with a catalyst containing a zeolite of the MFS structure type, under conditions to obtain selectively oligomeric product containing predominant amounts of certain oligomers. The process is carried out at a temperature comprised between 125 and 175° C. when the feedstock contains only alkenes with 3 carbon atoms and between 140 and 240° C., preferably between 140 and 200° C. when the feedstock contains comprises at least one alkene with 4 or more carbon atoms.Type: GrantFiled: April 20, 2001Date of Patent: September 26, 2006Assignee: ExxonMobil Chemical Patents Inc.Inventors: Georges Marie Karel Mathys, Jihad Mohammed Dakka, Machteld Maria Mertens, Johan A. Martens, Igor V. Mishin, Raman Ravishankar, Roger Eijkhoudt
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Patent number: 7074384Abstract: A new family of crystalline molecular sieves is described having a characteristic XRD pattern as illustrated in FIG. 1, and having three sharp peaks at 2? (CuK?) of 8.82, 12.44, and 23.01.Type: GrantFiled: December 7, 2001Date of Patent: July 11, 2006Assignee: ExxonMobil Chemical Patents Inc.Inventors: Machteld Maria Mertens, Johan Adriaan Martens, Raman Rayishankar, Christine Eva Antiona Kirschhock, Pierre August Jacobs, Antonie Jan Bons, Wilfried J. Mortier
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Patent number: 7011810Abstract: MFS structure type zeolite manufacture is facilitated by using a second organic molecule in addition to the usual hexaethylpentane diammonium salt.Type: GrantFiled: September 27, 2002Date of Patent: March 14, 2006Assignee: ExxonMobil Chemical Patents Inc.Inventors: Jihad Mohammed Dakka, Machteld M. Mertens, Daria Nowakiwska Lissy
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Patent number: 6930219Abstract: A process for treating organic compounds includes providing a composition which includes a substantially mesoporous structure of silica containing at least 97% by volume of pores having a pore size ranging from about 15 ? to about 30 ? and having a micropore volume of at least about 0.01 cc/g, wherein the mesoporous structure has incorporated therewith at least about 0.02% by weight of at least one catalytically and/or chemically active heteroatom selected from the group consisting of Al, Ti, V, Cr, Zn, Fe, Sn, Mo, Ga, Ni, Co, In, Zr, Mn, Cu, Mg, Pd, Pt and W, and the catalyst has an X-ray diffraction pattern with one peak at 0.3° to about 3.5° at 2?. The catalyst is contacted with an organic feed under reaction conditions wherein the treating process is selected from alkylation, acylation, oligomerization, selective oxidation, hydrotreating, isomerization, demetalation, catalytic dewaxing, hydroxylation, hydrogenation, ammoximation, isomerization, dehydrogenation, cracking and adsorption.Type: GrantFiled: December 6, 2002Date of Patent: August 16, 2005Assignee: ABB Lummus Global Inc.Inventors: Zhiping Shan, Jacobus Cornelius Jansen, Chuen Y. Yeh, Philip J. Angevine, Thomas Maschmeyer, Mohamed S. Hamdy
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Patent number: 6914165Abstract: Process for obtaining a “diesel cut” fuel having a CN cetane number equal to or greater than 48 and a content of aromatics lower than 0.4% by weight starting from olefins or their mixtures, characterized in that it comprises oligomerizing said olefins having from 2 to 10 carbon, distilling the stream obtained from the oligomerization, and hydrogenating the separated C12-C24 hydrocarbon stream.Type: GrantFiled: April 1, 2002Date of Patent: July 5, 2005Assignees: Snamprogetti S.p.A., Enitecnologie S.p.A.Inventors: Cristina Flego, Carlo Perego, Mario Marchionna
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Patent number: 6914166Abstract: The present invention relates to processes for making a reaction product comprising trimethylpentene(s) which comprises contacting a C4 olefinic feedstock containing isobutene and n-butene(s) with a catalyst comprising zeolite beta under conditions allowing selective dimerization of isobutene to trimethylpentene(s). It also relates to the products obtained by these processes.Type: GrantFiled: December 20, 2000Date of Patent: July 5, 2005Assignee: ExxonMobil Chemical Patents Inc.Inventors: Jihad Mohammed Dakka, Marc O. J. Geelen, Georges Marie Mathys, Paul William Allen
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Patent number: 6884916Abstract: An oligomerization process in which hydrocarbon feedstocks are contacted with a hydrotreating catalyst in the absence of hydrogen and in the liquid phase. The catalyst is a heterogeneous catalyst selected from supported reduced metals, metals oxides, metal sulfides and combinations thereof. Preferred catalysts include mixed nickel and molybdenum oxides or mixed cobalt and molybdenum oxides. The process also oligomerizes sulfur compounds so that sulfur containing feedstocks can be treated without deactivating the catalysts.Type: GrantFiled: October 28, 1999Date of Patent: April 26, 2005Assignee: Exxon Mobil Chemical Patents Inc.Inventors: Stephen H. Brown, Robert A. Crane, Jr., Robert J. Saxton, William A. Weber
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Patent number: 6841711Abstract: A process for making a lube base stock wherein an olefinic feedstock is contacted with an oligomerization catalyst in a catalytic distillation unit to produce a product having a higher number average molecular weight than the olefinic feedstock. That product is separated zone in the catalytic distillation unit into a light byproduct fraction and a heavy product fraction that includes hydrocarbons in a lube base stock range.Type: GrantFiled: January 11, 2001Date of Patent: January 11, 2005Assignee: Chevron U.S.A. Inc.Inventors: Russell R. Krug, Dennis J. O'Rear
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Patent number: 6841063Abstract: The present invention relates to a new crystalline zeolite SSZ-53 prepared by using phenylcycloalkylmethyl ammonium cations as structure directing agents.Type: GrantFiled: July 10, 2003Date of Patent: January 11, 2005Assignee: Chevron U.S.A. Inc.Inventor: Saleh Elomari
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Publication number: 20040267073Abstract: Process for producing poly-&agr;-olefins are described wherein the processes comprise: (a) providing a primary alcohol; and (b) polymerizing the primary alcohol in the presence of an acidic alumino layer silicate to form a poly-&agr;-olefin. Water formed during the polymerization can be removed, optionally during the polymerization, and subsequent hydrogenation may be performed.Type: ApplicationFiled: April 20, 2004Publication date: December 30, 2004Inventors: Lars Zander, Alfred Westfechtel, Elke Grundt, Markus Dierker
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Patent number: 6827843Abstract: The present invention relates to new crystalline molecular sieve SSZ-63 prepared using N-cyclodecyl-N-methyl-pyrrolidinium cation as a structure-directing agent, methods for synthesizing SSZ-63 and processes employing SSZ-63 in a catalyst.Type: GrantFiled: December 26, 2002Date of Patent: December 7, 2004Assignee: Chevron U.S.A., Inc.Inventor: Saleh Elomari
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Publication number: 20040242948Abstract: This invention is to a method of oligomerizing an olefin feed stream. The olefin feed stream contains at least one C2 to C12 olefin to obtain an olefin feed stream and has less than 1,000 ppm by weight oxygenated hydrocarbon. The olefin is oligomerized by contacting with an acid based oligomerization catalyst.Type: ApplicationFiled: March 22, 2004Publication date: December 2, 2004Inventors: Georges M.K. Mathys, Stephen H. Brown, Hubertus Joseph Beckers, Raphael Frans Caers, John Stephen Godsmark, Luc R.M. Martens, John Richard Shutt, Eddy T. Van Driessche
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Patent number: 6808620Abstract: The present invention relates to new crystalline molecular sieve SSZ-64 prepared using a N-cyclobutylmethyl-N-ethylhexamethyleneiminium cation or N-cyclobutylmethyl-N-ethylheptamethyleneiminium cation structure directing agent, and processes employing SSZ-64 in a catalyst.Type: GrantFiled: August 1, 2002Date of Patent: October 26, 2004Assignee: Chevron U.S.A. Inc.Inventor: Saleh Elomari