| Patent Number |
Title Of Patent |
Date Issued |
| 5516959 |
Highly selective n-olefin isomerization process using ZSM-35 |
May 14, 1996 |
| A process is disclosed for the highly selective skeletal isomerization of linear olefin-containing organic feeds to iso-olefins at high levels of feed conversion wherein linear olefins, e.g., n-butenes, are contacted with catalyst comprising ZSM-35 under skeletal isomerization conditions |
| 5449851 |
Highly selective n-olefin isomerization process using ZSM-35 |
September 12, 1995 |
| A process is disclosed for the highly selective skeletal isomerization of linear olefin-containing organic feeds wherein linear olefins, e.g., n-butenes, are contacted with catalyst comprising ZSM-35 under isomerization conditions to produce iso-olefins of corresponding carbon number |
| 5304695 |
Double bond isomerization of olefin-containing feeds with minimal oligomerization using permanen |
April 19, 1994 |
| A method is disclosed for the double bond isomerization of alpha olefin-containing feeds, e.g., conversion of 1-butene-containing hydrocarbon streams to 2-butene-rich product streams, wherein oligomer by-products are minimized. The process uses a catalyst composition comprising a zeo |
| 5292880 |
Synthesis of caprolactam using catalysts |
March 8, 1994 |
| A process for catalytically converting cyclohexanone oxime to epsilon caprolactam. The conversion catalyst is a crystalline aluminosilicate zeolite having a Constraint Index greater than 1 and a reduced surface acidity. The surface acidity is reduced by selective surface dealumination |
| 5243090 |
Conversion of normal alkenes to tertiary alkyl ethers |
September 7, 1993 |
| A process is disclosed for the production of tertiary alkyl ethers wherein linear olefins, particularly n-butene, are isomerized in the vapor phase at high temperature in contact with shape selective metallosilicate catalyst to produce iso-olefin vapor, particularly isobutene. The vaporo |
| 5237120 |
Double bond isomerization of olefin-containing feeds with minimal oligomertization using surface |
August 17, 1993 |
| A method is disclosed for the double bond isomerization of alpha olefin-containing feeds, e.g., conversion of 1-butene-containing hydrocarbon streams to 2-butene-rich product streams, wherein oligomer by-products are minimized. The process uses a catalyst composition comprising a zeo |
| 5234576 |
Iso-olefin production |
August 10, 1993 |
| The present invention discloses a process for increasing the selectivity of the production of isobutylene in an admixture of C.sub.4 olefins, in a process comprising producing isobutylene, with high selectivity, comprising catalytically producing a first composition comprising at least |
| 5234575 |
Catalytic cracking process utilizing an iso-olefin enhancer catalyst additive |
August 10, 1993 |
| The invention relates to improving the selectivity of the production of isobutylene or 2-methylpropene during fluid catalytic cracking of heavy C.sub.9 + aromatic containing feeds including resids and/or gas oils by employing two catalyst components, one of which comprises ZSM-23, ZSM-22 |
| 5225609 |
Production of tertiary alkyl ether using improved zeolite catalyst |
July 6, 1993 |
| A process is disclosed for the production of alkyl tertiary alkyl ether from alkanol and iso-olefin employing zeolite catalyst, particularly zeolite Beta, that results is a high ether selectivity and a significant reduction in the formation of olefin oligomer by-product. The improvement |
| 5177281 |
Double bond isomerization of 1-olefin containing feeds using ZSM-22, ZSM-23 or ZSM-35 |
January 5, 1993 |
| A method for isomerizing a 1-olefin-containing organic feedstock having an average carbon number of about 4 to 5, e.g., 1-butene, to convert 1-olefin to 2-olefin at temperatures less than 200.degree. C., with a double bond isomerization catalyst comprising a zeolite sorbing 30 to 55 mg n |
| 5144086 |
Ether production |
September 1, 1992 |
| A process for synthesizing di-isopropyl ether (DIPE) by etherification of isopropanol. A multi-stage process can employ propene in mixture with other feedstock materials, such as propane from refinery gas, in a primary hydration stage to produce isopropanol. The isopropanol is enriched |
| 5132467 |
Process for the conversion of normal alkenes to tertiary alkyl ethers |
July 21, 1992 |
| A process is disclosed for the production of tertiary alkyl ethers wherein linear olefins, particularly n-butene, are isomerized in the vapor phase at high temperature in contact with shape selective metallosilicate catalyst to produce iso-olefin vapor, particularly isobutene. The vaporo |
| 5110478 |
Catalytic conversion over membrane composed of a pure molecular sieve |
May 5, 1992 |
| A process is provided for catalytic conversion of organic compounds in a conversion zone containing a synthetic, non-composited microporous membrane comprising a continuous array of crystalline molecular sieve material. |
| 5100596 |
Synthesis of membrane composed of a pure molecular sieve |
March 31, 1992 |
| A method is provided for the preparation of a synthetic, non-composited microporous membrane comprising a continuous array of crystalline molecular sieve material. A non-porous forming surface is contacted, under crystallization conditions, with a chemical mixture capable of forming the |
| 5069794 |
Separation of mixture components over membrane composed of a pure molecular sieve |
December 3, 1991 |
| A process is provided for separation of components of a gaseous or liquid mixture which comprises contacting the mixture with a synthetic, non-composited microporous membrane comprising a continuous array of crystalline molecular sieve material. |
| 5019263 |
Membrane composed of a pure molecular sieve |
May 28, 1991 |
| A synthetic, non-composited microporous membrane comprises a continuous array of crystalline molecular sieve material. A method is also provided for the preparation of the membrane, and methods are provided for using the membrane as a catalyst, or as a non-catalytic separation membrane f |
| 5013329 |
Conversion of light hydrocarbons to ether rich gasoline |
May 7, 1991 |
| A process is disclosed for converting a light hydrocarbon feedstock that contains a mixture of linear and branched olefins to ether-rich high octane gasoline streams that include tertiary alkyl and isoalkyl ethers such as MTBE, TAME, methyl isopropyl ether (MIPE), and methyl sec-buty |
| 5008482 |
Direct production of styrenes by reaction of aromatics with aldehydes |
April 16, 1991 |
| There is provided a process for producing a styrenic compound by reacting an aromatic compound with an aldehyde over an intermediate pore size molecular sieve catalyst. Such styrenic compounds include unsubstituted styrene and substituted styrene. Examples of such aromatic compounds |
| 4994428 |
Method for preparing a promoted iron catalyst and catalyst prepared by the method for conversion |
February 19, 1991 |
| A novel Fischer Tropsch iron catalyst that has unusually high selectivity for liquid hydrocarbons (low selectivity for methane) is provided. The catalyst is prepared by treatment of the usual inactive catalyst precursor with water vapor at elevated temperature either after conventional |
| 4978689 |
Conversion of synthesis gas to liquid hydrocarbons |
December 18, 1990 |
| The medium pressure Fischer-Tropsch synthesis of liquid hydrocarbons conducted with an iron catalyst is made more efficient by temporarily suspending conventional synthesis and treating the catalyst with a high partial pressure of water vapor, after which conventional synthesis is re |
| 4962239 |
Process for preparing ethers |
October 9, 1990 |
| Olefin is etherified with alcohol to provide an ether or mixture of ethers employing catalyst comprising zeolite characterized by an X-ray diffraction pattern including interplanar d-spacings at 12.36+0.4, 11.03+0.2, 8.83.+-.0.14, 6.18.+-.0.12, 6.00.+-.0.10, 4.06.+-.0.07, 3.91.+-.0.0 |
| 4927924 |
Synthesis of caprolactam |
May 22, 1990 |
| A process is provided for catalytically converting cyclohexanone oxime to epsilon caprolactam. The conversion is characterized by exceptionally high selectivity and reduced rate of catalyst aging, even at single pass conversion above 90 percent. The conversion catalyst is a medium pore s |
| 4906671 |
Fischer-tropsch process |
March 6, 1990 |
| An improved Fischer-Tropsch process for hydrocarbon synthesis operated in the fluid mode of the Sasol's Synthol Process provides increased diesel and heavier hydrocarbon yield wherein a Fischer-Tropsch synthesis catalyst modified by a minor amount of a zeolite catalyst selectively conver |
| 4900462 |
Polar lubricating fluid and a method for its synthesis |
February 13, 1990 |
| A polar lubricating fluid comprising aliphatic molecules having hydroxy or ester functional groups. The alcohol lubricant molecules have at least 20 carbon atoms and the ester molecule comprises between 26 and 100 carbon atoms. The oxygenate content of both molecules is at least 0.2 mmol |
| 4714787 |
Production of ethers from linear olefins |
December 22, 1987 |
| A catalytic process is provided for the manufacture of ethers by reacting a linear monoolefin with a primary or secondary alcohol having up to 4 carbon atoms. The process selectively forms methyl isopropyl ether from a propylene feed and methanol by contact with a zeolite such as Zeolite |
| 4686313 |
Low nitrogen iron-containing Fischer-Tropsch catalyst and conversion of synthesis gas therewith |
August 11, 1987 |
| Synthesis gas (a mixture of hydrogen gas and carbon monoxide) is converted to hydrocarbons by flowing the gas first over iron-containing Fischer-Tropsch catalyst and then over a zeolite. The Fischer-Tropsch catalyst contains relatively little nitrogen as a result of its preparation b |
| 4617288 |
Low nitrogen iron-containing Fischer-Tropsch catalyst for conversion of synthesis gas and proces |
October 14, 1986 |
| Synthesis gas (a mixture of hydrogen gas and carbon monoxide) is converted to hydrocarbons by flowing the gas first over iron-containing Fischer-Tropsch catalyst and then over a zeolite. The Fischer-Tropsch catalyst contains relatively little nitrogen as a result of its preparation b |
| 4508836 |
Catalytic conversion process for aromatic feedstocks with hydrogen regeneration of coke-selectiv |
April 2, 1985 |
| In the process of converting an aromatic feedstock to an alkyl-substituted mono-nuclear aromatic product by contacting the feedstock with a coke-selectivated ZSM-5 type catalyst at elevated temperature under conversion process coking conditions to produce said alkyl-1-substituted mon |
| 4500417 |
Conversion of Fischer-Tropsch products |
February 19, 1985 |
| The high boiling fraction of Fischer-Tropsch synthesis is upgraded by contact with a catalyst comprising a high-silica, large pore zeolite and a hydrogenation component. The products are a distillate fraction characterized by low sulfur and nitrogen content, high isoparaffin content |
| 4487972 |
Production of oxygenated compounds |
December 11, 1984 |
| This specification discloses a process for the production of oxygenated compounds, more specifically aldehydes and alcohols, by reacting an olefin with hydrogen and carbon monoxide in the presence of, as a ctalyst, an insoluble polymer containing a functional group, which may be an amine |
| 4442210 |
Process for the production of fermentation ethanol |
April 10, 1984 |
| Ethanol is recovered from a fermentation mixture by contact with a crystalline zeolite sorbent exemplified by ZSM-5, followed by desorption of concentrated ethanol. In one embodiment of this invention, the sorption step is conducted during fermentation to maintain the ethanol concent |
| 4418235 |
Hydrocarbon conversion with zeolite having enhanced catalytic activity |
November 29, 1983 |
| A method is provided for increasing the catalytic activity of acid zeolite catalysts characterized by a silica to alumina mole ratio of at least 12 and a constraint index within the approximate range of 1 to 12, comprising contacting said zeolite catalysts with water for a sufficient tre |
| 4409412 |
Process for producing alkyl aromatic compounds |
October 11, 1983 |
| A process for alkylating aromatic compounds wherein the product aromatics are provided with one or more alkyl groups possessing at least two carbon atoms is disclosed wherein starting aromatic compound(s) and an alkylating atent which is a mixture of hydrogen and/or a hydrogen-containing |
| 4374296 |
Isomerization of paraffin hydrocarbons using zeolites with high steam-enhanced acidity |
February 15, 1983 |
| A process is provided for effecting hydroisomerization of a C.sub.4 -C.sub.8 paraffin by contacting the same under hydroisomerization conditions with a catalyst comprising a porous crystalline zeolite characterized by a silica/aluminum mole ratio of greater than 12 and a constraint i |
| 4358395 |
Hydrogen regeneration of coke-selectivated crystalline aluminosilicate catalyst |
November 9, 1982 |
| A method is provided for regeneration of a catalyst comprising a crystalline aluminosilicate zeolite characterized by a silica to alumina mole ratio of at least about 12, a constraint index, as hereinafter defined, within the approximate range of 1 to 12, which catalyst has undergone |
| 4339606 |
Conversion of ketones over metal-containing zeolite catalysts |
July 13, 1982 |
| Ketones are converted in one step to saturated dimeric ketones by passing them over a zeolite having a silica to alumina ratio of at least 12 and a Constraint Index of from 1 to 12 and containing a Group VIII metal. |
| 4329509 |
Co-production of 2-alkanones and phenols |
May 11, 1982 |
| A process for the co-production of 2-alkanones having at least five carbon atoms and phenol or a substituted phenol. In the first step, benzene or a substituted benzene is alkylated with an alkyl moiety of at least five carbon atoms to selectively produce the 2-arylalkane isomer. Subsequ |
| 4326994 |
Enhancement of zeolite catalytic activity |
April 27, 1982 |
| A method is provided for increasing the catalytic activity of acid zeolite catalysts characterized by a silica to alumina mole ratio of at least 12 and a constraint index within the approximate range of 1 to 12, comprising contacting said zeolite catalysts with water for a sufficient tre |
| 4323698 |
Resin-metal compound complex for catalyzing chemical reactions |
April 6, 1982 |
| This specification discloses an insoluble resin-metal compound complex, the method for its preparation, and its use in carrying out a catalyzed reaction. The complex is a weak base anion exchange resin which has been contacted with a solution of a coordination compound having at least tw |
| 4300009 |
Conversion of biological material to liquid fuels |
November 10, 1981 |
| Living plants and animals synthesize and often accumulate a wide variety of organic materials having a molecular weight greater than 150. These include different chemical types such as natural hydrocarbons including rubbery substances, natural resins, and natural glycerides such as oils |
| 4279830 |
Conversion of synthesis gas to hydrocarbon mixtures utilizing dual reactors |
July 21, 1981 |
| The conversion of less than 1 H.sub.2 /CO ratio syngas to high yield of C.sub.3 plus product is accomplished with a CO reducing catalyst comprising shift characteristics and the product of Fischer-Tropsch synthesis is converted to premium gasoline and distillate fuels by contact with |
| 4260839 |
Ethane conversion process |
April 7, 1981 |
| A process for effecting an endothermic and an exothermic reaction, under conversion conditions, in a single reaction zone wherein ethane is endothermically converted to C.sub.3 + hydrocarbons, and wherein an unconverted portion of ethane is simultaneously exothermically hydrogenated |
| 4252736 |
Conversion of synthesis gas to hydrocarbon mixtures utilizing dual reactors |
February 24, 1981 |
| In the conversion of coal to gaseous and liquid products, the heat value of the coal is more completely retained by the products through the selective high efficiency conversion of coal to a low ratio syngas utilizing a portion of the Fischer-Tropsch generated heat recovered as steam, |
| 4229608 |
Heat balanced cyclic process for manufacture of light olefins |
October 21, 1980 |
| A catalytic heat balanced cyclic process is provided for converting a charge consisting essentially of methanol, dimethyl ether or mixtures thereof to a hydrocarbon product rich in ethylene and propylene by contact, under specified conditions of temperature and contact time, with a c |
| 4211880 |
Resin-metal compound complex |
July 8, 1980 |
| This specification discloses an insoluble resin-metal compound complex, the method for its preparation, and its use in carrying out a catalyzed reaction. The complex is a weak base anion exchange resin which has been contacted with a solution of a coordination compound having at least tw |
| 4159995 |
Conversion of synthesis gas to hydrocarbon mixtures utilizing dual reactors |
July 3, 1979 |
| A gaseous mixture of carbon monoxide and hydrogen is contacted in a first reactor with an iron Fischer-Tropsch catalyst such as potassium promoted iron under special conditions and the total products from said contact are then converted in a second reactor containing HZSM-5 to obtain eit |
| 4157338 |
Conversion of synthesis gas to hydrocarbon mixtures |
June 5, 1979 |
| A mixture of carbon monoxide and hydrogen is contacted with a mixture comprising an element selected from the group consisting of ruthenium, rhodium and osmium carbon monoxide reduction catalyst and a crystalline alumino-silicate providing a pore dimension greater than about 5 Angstroms |
| 4117026 |
Selective production of para dialkyl substituted benzenes |
September 26, 1978 |
| A catalytic process is provided for the selective production of para dialkyl substituted benzenes containing alkyl groups of 1 to 4 carbon atoms, typified by para-xylene, by contacting, under conversion conditions, a hydrocarbon precursor selected from the group consisting of mono al |
| 4100218 |
Ethane conversion process |
July 11, 1978 |
| Ethane is converted to LPG and gasoline and/or aromatics concentrate in a combination process which comprises directly passing olefin effluent from the thermal cracking of ethane over a special crystalline aluminosilicate zeolite of the ZSM-5 type and recovering aromatics and C.sub.3 + |
| 4097543 |
Selective disproportionation of toluene |
June 27, 1978 |
| A catalytic process is provided for the selective production of para-xylene by disproportionation of toluene in the presence of a catalyst comprising a crystalline aluminosilicate zeolite having a silica to alumina ratio of at least about 12 and a constraint index within the approximate |
