Patents by Inventor Louis D. Rollmann
Louis D. Rollmann has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 6419891Abstract: This invention relates to a new synthetic crystalline material comprising acidic surface silanol groups, designated MCM-69, a method for its preparation and use thereof in catalytic conversion of organic compounds.Type: GrantFiled: October 18, 1999Date of Patent: July 16, 2002Assignee: ExxonMobil Oil CorporationInventors: Carrie L. Kennedy, Gordon J. Kennedy, Stephen L. Lawton, Louis D. Rollmann, John L. Schlenker
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Patent number: 6277355Abstract: High activity ZSM-5 and ZSM-11, with alpha values of 1000 to 3500, are produced by synthesis from a reaction mixture containing an organic directing agent selected from a non-cyclic amine having the formula (C2H6N)nNmHq wherein n is 1, 2 or 3; m is 0 or 1; q is 0, 1 or 2 and (n+m+q) is either 2 or 4.Type: GrantFiled: July 13, 1999Date of Patent: August 21, 2001Assignee: ExxonMobil Chemical Patents Inc.Inventors: Carrie L. Kennedy, Louis D. Rollmann, John L. Schlenker
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Patent number: 5961951Abstract: The present invention relates to a composition and a method for preparing ZSM-48 exhibiting an X-ray pattern having values as set forth in Table 1 of the specification. The method of the present invention includes (a) preparing a reaction mixture; and (b) maintaining the mixture under crystallization conditions until crystals of the ZSM-48 are formed. The mixture includes a source of silica, a source of trivalent metal oxide, an alkali metal oxide, ethylenediamine and water. The mixture, in terms of mole ratios of oxides, has the following composition ranges:SiO.sub.2 /Me.sub.2 O.sub.3 : 100 to 1500,M.sub.2/n O/SiO.sub.2 : 0 to 0.2,RN/SiO.sub.2 : 2.0 to 5.0,OH.sup.- /SiO.sub.2 : 0 to 0.3, andH.sub.2 O/SiO.sub.2 : 10 to 100,wherein Me is a trivalent metal, M is an alkali metal and RN is ethylenediamine.Type: GrantFiled: January 12, 1998Date of Patent: October 5, 1999Assignee: Mobil Oil CorporationInventors: Carrie L. Kennedy, Louis D. Rollmann, John L. Schlenker
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Patent number: 4785883Abstract: The permeability of subterranean oil-bearing formations is controlled by injection of an organic polysilicate ester. The ester may be derived from simple, monohydroxylic alcohols such as methanol, ethanol, propanol or butanol, from diols such as ethylene glycol, from polyols such as glycerol and alkylene oxide polymerization products and from other organic compounds containing functional hydroxy groups, for example, partial ethers and esters of glycols and polyols. The polysilicates are injected into a formation through injection wells, suitably in an amount from 10 to 100% of the pore volume of the zone to be treated. In the formation, the polysilicate esters form gels which selectively decrease the permeability of the high permeability regions of the formation, to divert the flow of flooding liquid used in flooding operations to the less permeable regions of the formation.Type: GrantFiled: December 10, 1986Date of Patent: November 22, 1988Assignee: Mobil Oil CorporationInventors: Dennis H. Hoskin, Louis D. Rollmann
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Patent number: 4660640Abstract: The permeability of subterranean oil-bearing formations is controlled by injection of an organic polysilicate ester. The ester may be derived from simple, monohydroxylic alcohols such as methanol, ethanol, propanol or butanol, from diols such as ethylene glycol, from polyols such as glycerol and alkylene oxide polymerization products and from other organic compounds containing function hydroxy groups, for example, partial ethers and esters of glycols and polyols. The polysilicates are injected into a formation through injection wells, suitably in an amount from 10 to 100% of the pore volume of the zone to be treated. In the formation, the polysilicate esters form gels which selectively plug the high permeability regions of the formation, to divert the flow of flooding liquid used in flooding operations to the less permeable regions of the formation.Type: GrantFiled: February 1, 1985Date of Patent: April 28, 1987Assignee: Mobil Oil CorporationInventors: Dennis H. Hoskin, Louis D. Rollmann
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Patent number: 4536282Abstract: This invention provides a process for upgrading a variety of hydrocarbon oils including low-grade crudes and fractions thereof. In this process, a hydrocarbon oil having an ASTM 50% temperature not higher than 550.degree. F. is converted at low temperature and pressure to more volatile products by a dispersion of crystalline zeolite catalysts having a silica: alumina ratio of at least 12 and a C.I. within 1-12. Initially, 0.02-10 wt % of the catalyst is dispersed in the feed until the catalyst inventory in the reactor stage accumulates. Thereafter, catalyst is added and removed to maintain a total catalyst content not greater than about 35 wt % of the feed in the reactor.Type: GrantFiled: June 4, 1984Date of Patent: August 20, 1985Assignee: Mobil Oil CorporationInventor: Louis D. Rollmann
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Patent number: 4495166Abstract: A novel process for the preparation of ZSM-5 and ZSM-11 utilizing a mixture of both quaternary ammonium ions and amines in the forming solution is disclosed in order to enhance the rate of crystallization.Type: GrantFiled: July 19, 1982Date of Patent: January 22, 1985Assignee: Mobil Oil CorporationInventors: Robert B. Calvert, Louis D. Rollmann
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Patent number: 4431746Abstract: Highly siliceous porous crystalline zeolite materials having a mole ratio of silica to alumina of at least 20 are metal-impregnated by contacting the zeolite with a solution (aqueous or inorganic) of a metal complex having a zero or uncommon low ion charge.Type: GrantFiled: June 26, 1981Date of Patent: February 14, 1984Assignee: Mobil Oil CorporationInventor: Louis D. Rollmann
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Patent number: 4423021Abstract: A new porous silico-crystal, a method of making same and the use thereof in catalytic conversion of organic compounds. The new product has a composition, expressed in terms of moles of anhydrous oxides per 100 moles of silica as follows:(0 to 15)RN : (0 to 1.5)M.sub.2/n O : (0-2)Al.sub.2 O.sub.3 : (100)SiO.sub.2wherein M is at least one cation having a valence n, RN is a C.sub.1 -C.sub.20 organic compound, having at least one amine functional group of pK.sub.a .gtoreq.7 and wherein the zeolite is characterized by the distinctive X-ray powder diffraction pattern shown in Table I. The new silico-crystal is prepared from a reaction mixture comprising a source of silica, C.sub.1 -C.sub.20 organic compounds, as defined above, with or without a source of alumina, and water.Type: GrantFiled: November 18, 1980Date of Patent: December 27, 1983Assignee: Mobil Oil CorporationInventors: Louis D. Rollmann, Ernest W. Valyocsik
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Patent number: 4379489Abstract: An enhanced recovery process in which liquid sulfur is burned in an oyxgen-containing gas underground to form SO.sub.2. The SO.sub.2 may itself act as a drive fluid for the recovery of oil or it may react with limestone in the formation to form CO.sub.2, an alternate drive fluid.Type: GrantFiled: November 24, 1980Date of Patent: April 12, 1983Assignee: Mobil Oil CorporationInventor: Louis D. Rollmann
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Patent number: 4374093Abstract: A continuous-stream zeolite crystallization apparatus comprising a combination of a tubular reactor, a central stirring element contained therein, ingress and egress means for the reactor for charging crystalline zeolite forming reactants therein and recovering crystallized zeolites therefrom, respectively, recovery vessels for collecting and processing crystallized zeolites continuously, the reactor and recovery vessels optionally being subjected to a controlled pressure system.Type: GrantFiled: August 26, 1981Date of Patent: February 15, 1983Assignee: Mobil Oil CorporationInventors: Louis D. Rollmann, Ernest W. Valyocsik
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Patent number: 4359595Abstract: A lower alcohol and/or ether feed is selectively converted to a mixture of light olefins, including ethylene and propylene, by catalytic contact of the feed material with a catalyst comprising one or more zeolites characterized by a silica to alumina mole ratio of at least 12 and a constraint index in the approximate range of 1 to 12. The catalytic conversion is carried out in the presence of bulky heterocyclic organic nitrogen compounds to suppress the formation of mononuclear aromatics. The process of this invention is particularly useful in the production of C.sub.2 -C.sub.3 olefins from methanol or dimethyl ether.Type: GrantFiled: February 2, 1981Date of Patent: November 16, 1982Assignee: Mobil Oil CorporationInventor: Louis D. Rollmann
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Patent number: 4354870Abstract: A process for settling sedimentary materials wherein aqueous suspensions thereof are treated with H.sub.2 S as a means for separating clays containing metals associated therewith.Type: GrantFiled: October 15, 1981Date of Patent: October 19, 1982Assignee: Mobil Oil CorporationInventors: Theodore P. Goldstein, Louis D. Rollmann
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Patent number: 4338288Abstract: This invention provides a sorbent composition, manganese nodules with occluded sulfur, effective for removing metal contaminants from gases or liquids. It is effective for removing lead contaminant from gasoline and mercury from water or natural gas. It may be used in the chlor-alkali process for cleaning by-product hydrogen. The sorbent also may be used for recovering valuable metals, for example from mine seepage waters.Type: GrantFiled: February 3, 1981Date of Patent: July 6, 1982Assignee: Mobil Oil CorporationInventor: Louis D. Rollmann
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Patent number: 4324651Abstract: An asphalt-containing mineral oil can be deasphalted at temperatures above about 80.degree. C. with methanol serving as the deasphalting solvent. Two liquid phases are produced, an asphalt-rich phase and a methanol-rich phase. By cooling the methanol-rich phase to a temperature below 80.degree. C., two additional liquid phases are produced, an oil-rich phase and a methanol-rich phase.Type: GrantFiled: December 9, 1980Date of Patent: April 13, 1982Assignee: Mobil Oil CorporationInventors: Louis D. Rollmann, Dennis E. Walsh
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Patent number: 4300011Abstract: Selective reactions of hydrocarbons and/or oxygenated hydrocarbons are conducted in the presence of catalysts comprising one or more zeolites characterized by a silica to alumina mole ratio of at least 12 and a constraint index in the approximate range of 1 to 12, said catalysts are contacted with bulky heterocyclic organic nitrogen compounds. Said nitrogen compounds have an effective critical dimension of greater than 6.2 Angstroms and a pKa of between about 3 and 9. The process of this invention is particularly useful in the production of dialkylbenzene derivatives low in the ortho-isomer.Type: GrantFiled: April 28, 1980Date of Patent: November 10, 1981Assignee: Mobil Oil CorporationInventor: Louis D. Rollmann
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Patent number: 4296083Abstract: An improved method for synthesizing improved crystalline zeolites characterized by an alumina to silica mole ratio of not greater than 0.083 and a constraint index within the approximate range of 1 to 12 is provided. The improved method comprises forming a reaction mixture containing one or more sources of alkali metal oxide, organic nitrogen-containing cations, hydrogen ions, an oxide of silicon, water, and optionally, an oxide of aluminum, wherein the mole ratio for hydroxide ions/silica in said reaction mixture is zero and the mole ratio of H.sup.+ (additional)/silica in said reaction is between 0 and 1.0, and wherein the pH of said reaction mixture is at least about 7, and maintaining the reaction mixture at a temperature and pressure for a time necessary to crystallize therefrom said crystalline zeolite. Improvement in the present synthesis method resides, for example, in reduced crystallization time and reduced organic nitrogen-containing cation source requirement.Type: GrantFiled: November 14, 1979Date of Patent: October 20, 1981Assignee: Mobil Oil CorporationInventor: Louis D. Rollmann
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Patent number: 4272357Abstract: A process for the desulfurization and demetalation of a nickel and sulfur containing heavy hydrocarbon charge stock comprises: admixing the feed with hydrogen; reacting the admixture in a reaction zone containing desulfurization catalyst at desulfurization conditions; injecting water into the reaction zone at H.sub.2 O/H.sub.2 molar ratios of about 0.05 to 0.5; separating and recycling both hydrogen and water from the reactor effluent; and recovering the substantially sulfur and nickel free product.Type: GrantFiled: November 13, 1979Date of Patent: June 9, 1981Assignee: Mobil Oil CorporationInventor: Louis D. Rollmann
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Patent number: 4263126Abstract: This invention provides a method for converting waxy or viscous hydrocarbon oils to lower pour point or less viscous oils. By this method, reactive dispersions of zeolites, such as HZSM-5 crystals, are prepared with the oil to be converted, and conversion is effected by heating the dispersion.Type: GrantFiled: October 22, 1979Date of Patent: April 21, 1981Assignee: Mobil Oil CorporationInventor: Louis D. Rollmann
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Patent number: 4233138Abstract: A process for suppressing the coking tendency of heavy crudes and resids in visbreaking operations comprising treating the charge stock with an inorganic sulfide.Type: GrantFiled: January 22, 1979Date of Patent: November 11, 1980Assignee: Mobil Oil CorporationInventors: Louis D. Rollmann, Dennis E. Walsh