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7488859 |
Method for producing adamantane
A method for producing adamantane includes isomerizing exo-tetrahydrodicyclopentadiene into adamantane in an acidic chloroaluminate ionic liquid composed of aluminum(III) trichloride and a...
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7384538 |
Catalyst combination for the hydroisomerization of waxy feeds at low pressure
A process for the hydroisomerization of a waxy feed having a major portion boiling above 650° F. to produce a lubricating base oil having a lower pour point, said process comprising (a) passing...
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6855857 |
Isomerisation process
A process for the production of triptane, said process comprising: isomerising a hydrocarbon feedstock by containing said feedstock with an isomerisation catalyst at a reaction temperature of −50...
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6822130 |
Isomerization catalyst with a specific pore size distribution
A catalyst composition comprising an alumina carrier, a Group VIII noble metal, and a halogen compound wherein the catalyst composition has total pore volume of more than 0.48 ml/g and wherein at...
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6797853 |
Process of paraffin hydrocarbon isomerisation catalysed by an ionic liquid in the presence of a cyclic hydrocarbon additive
A process for the conversion of linear and/or branched paraffins hydrocarbons, catalysed by an ionic liquid catalyst, in the presence of a cyclic hydrocarbon additive containing a tertiary carbon...
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6673977 |
Procedure and device for the alkylation of isobutane by light olefins
A procedure for the alkylation of isobutane by olefinic hydrocarbons, in which a first hydrocarbon charge ( 3 ) rich in isobutane is put in contact with a second hydrocarbon charge rich in light...
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6573417 |
Fractionation of paraffin isomerization process effluent
The fractional distillation performed as part of the isomerization of C 5 -C 6 paraffins is heat integrated. A portion of a sidedraw recycle stream is employed to cool the feed to a deisohexanizer...
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6503465 |
Two-stage isomerization of saturated C6 hydrocarbons
A process and/or system is provided for isomerizing a hydrocarbon feedstock comprising saturated C 6 hydrocarbons by contacting the hydrocarbon feedstock, in the presence of hydrogen and...
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6320089 |
Paraffin-isomerization catalyst and process
An improved catalyst is disclosed for the conversion of hydrocarbons. The catalyst comprises an alumina support, a Friedel-Crafts metal halide, and a platinum-group metal component, wherein the...
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6297418 |
Catalyst based on a halogenated alumina, its preparation and use for the isomerization of normal C4-C6 paraffins
The invention concerns a catalyst containing at least one halogen, at least one metal from group VIII and a formed support comprising gamma alumina and optionally eta alumina, the catalyst being...
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6191333 |
Process for isomerization of normal C5-C10 paraffins using bridged long-reticulate-distance dioctahedral phyllosilicate 2:1
This invention pertains to the use of a catalyst that contains at least one dioctahedral phyllosilicate 2:1, which is preferably synthesized in a fluoride medium in the presence of HF acid and/or...
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6140547 |
Isomerization of hydrocarbons
An isomerization process for converting an isomerization feed stream containing alkanes having about 4 carbon atoms to about 10 carbon atoms per molecule and cycloalkanes having about 5 carbon...
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6133496 |
Two-stage isomerization of saturated C.sub. 6 hydrocarbons
A process and/or system is provided for isomerizing a hydrocarbon feedstock comprising saturated C 6 hydrocarbons by contacting the hydrocarbon feedstock, in the presence of hydrogen and...
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6110859 |
Hybrid catalyst system for converting hydrocarbons and a method of making and using such catalyst system
A catalyst system comprising a first solid material comprising activated carbon and at least one carburized transition metal; and a second solid material comprising at least one halogen component...
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6090992 |
Isomerization catalyst system, method of making and method of using such catalyst system in the isomerization of saturated hydrocarbons
A catalyst system comprising alumina, at least one carburized transition metal, and at least one halogen component, and a method of preparing such catalyst system which comprises incorporating at...
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5811630 |
PSA process with reaction for reversible reactions
A process is disclosed for the production of a high octane product from a feed mixture comprising C 5 -C 6 normal paraffins in which an equilibrium reaction to produce mono and dimethyl branched...
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5770783 |
Alkane isomerization using reversible flow reactive chromatography
A process to isomerize at least one normal or mono-methyl-branched alkane containing from about 6 to about 8 carbon atoms to form at least one multi-methyl-branched alkane has been developed. The...
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5763730 |
Process for alkane isomerization using reactive chromatography
A process for the continuous isomerization of an alkane to produce an isomerized product through contacting the alkane with a simulated moving bed acting as a catalyst for isomerization and an...
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5763732 |
Method of isomerizing N-paraffins into isoparaffins
A method of isomerizing n-paraffins into isoparaffins in a cut of hydrocarbons with four carbon atoms or of hydrocarbons with five and/or six carbon atoms. The cut being processed enters at least...
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5744684 |
Process for alkane isomerization using reactive chromatography and reactive desorbent
A process for isomerizing a mixture of alkanes containing pentanes and at least one alkane having from 6 to about 8 carbon atoms and no more than one methyl branch has been developed. The process...
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5744683 |
Process for continuous reaction and deparation using reactive chromatography
A process for the continuous isomerization of an alkane to produce an isomerized product through contacting the alkane with a simulated moving bed acting as a catalyst for isomerization and an...
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5705730 |
Isomerization process with improved chloride recovery
A process for the isomerization of hydrocarbons using a chloride promoted catalyst wherein an adsorption zone arrangement operates to maintain chloride compounds in the reaction zone and to prevent...
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5705731 |
Reactivation of hydrocarbon isomerization catalysts
In a process for isomerizing C 4 -C 7 alkanes and/or C 6 -C 7 cycloalkanes which is carried out in the presence of hydrogen gas, a chloride additive (e.g., CCl 4 or C 2 Cl 4 ) and a supported...
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5654247 |
Method for the reactivation of a deactivated hydrocarbon isomerization catalyst
Described is a novel method by which the activity of a deactivated or partially deactivated paraffin isomerization catalyst is enhanced or reactivated. The isomerization catalyst undergoes a...
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5639933 |
Isomerization catalyst and use thereof in alkane/cycloalkane isomerization
A catalyst composition is prepared by a method comprising impregnating alumina with at least one platinum compound, followed by calcining, reducing treatment, and heating with gaseous aluminum...
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5578196 |
Process for reducing the benzene content of petrols
The invention concerns a process for reducing the benzene content of petrol fractions, in which hydrogenation is carried out on a feed with the following composition by weight: 40% to 80% of...
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5530173 |
Process for alkane isomerization using reactive chromatography and reactive desorbent
A process for isomerizing a mixture of alkanes containing pentanes and at least one alkane having from 6 to about 8 carbon atoms and no more than one methyl branch has been developed. The process...
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5516963 |
Hydrocarbon conversion with additive loss prevention
An adsorption arrangement in combination with a catalytic hydrocarbon conversion process suspends non-hydrocarbon materials that act to enhance the operation of the conversion zone by using an...
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5474964 |
Hydrocarbon isomerization catalyst and use thereof
A catalyst composition is prepared by a method comprising impregnating alumina with at least one dissolved titanium compound (preferably a triethanolamine titanate) and at least one platinum...
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5463166 |
Reactivation of alkane isomerization catalysts
A process for reactivating a used n-alkane (preferably n-butane) isomerization catalyst comprising platinum, chlorine and a support material comprises contacting the catalyst with flowing hydrogen...
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5446230 |
Chlorinated, alumina-based, bimetallic catalyst and its use in the isomerization of C.sub.4 -C.sub.6 paraffins
A catalyst is provided based on chlorinated eta alumina incorporating platinum and germanium and tin, as well as chlorine. This catalyst can be used in a process for the isomerization of a charge...
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5382731 |
Combined paraffin isomerization/ring opening process
There is provided a process for ring opening of aromatics or cycloaliphatics, as well as isomerization of aliphatics. The feedstream to this process comprises hydrocarbons having 6 carbon atoms....
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5334792 |
Combined paraffin isomerization/ring opening process for c5+naphtha
There is provided a process for ring opening of aromatics and cycloaliphatics, as well as isomerization of aliphatics. The feedstream to this process comprises hydrocarbons having 6 carbon atoms....
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5326925 |
Isomerization process for 2,3-dimethylbutane production
An isomerization process maximizes the production of 2,3-dimethylbutane by using an arrangement of two reaction zones that operate at low conversion conditions to maximize the production of a...
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5326926 |
Isomerization with improved RVP and C4 recovery
A process for the isomerization of C 4 -C 6 paraffins that separates a low boiling or overhead fraction from a stabilizer in a stripping zone and provides a low RVP isomerization product and...
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5254794 |
Isomerization catalysts and preparation thereof
Isomerization catalyst compositions are prepared by heating aluminum chloride, at least one of several metal salts (preferably CuSO 4 ), at least one of several inorganic support materials...
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5245102 |
Isomerization with distillation and PSA recycle streams
An isomerization zone process is disclosed that combines a deisohexanizer with a PSA separation section to provide a product stream comprising methylbutane and dimethylbutane. The process combines...
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5245103 |
Isomerization processes and catalysts therefor
In one embodiment, C 4 -C 10 alkanes and/or C 5 -C 10 cycloalkanes are isomerized in the presence of a catalyst which has been prepared by heating AlCl 3 , at least one aluminum...
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5138112 |
Process for converting a C.sub.2 -C.sub.6 aliphatic hydrocarbon to high octane transportable fuel
A combination process for the conversion of C 2 -C 6 aliphatic hydrocarbons into easily transportable hydrocarbons of greater molecular weight. The combination process comprises converting the C...
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5082989 |
Integrated process for C.sub.4, C.sub.5 and C.sub.6 isomerization
A process is disclosed for the isomerization of a C 4 feedstock and a C 5 -C 6 feedstock that reduces equipment and operating expenses by utilizing a process flow scheme that provides beneficial...
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5043525 |
Paraffin isomerization and liquid phase adsorptive product separation
A combination isomerization and liquid phase adsorptive separation process is given increased efficiency and cost effectiveness while also improving the product quality by eliminating the columns...
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5026950 |
Hydrotreatment-isomerization without hydrogen recycle
A combined process for hydrotreating and isomerizing a C 4 -C 7 feedstock is simplified and made more efficient by the use of a common hydrogen source and low hydrogen to hydrocarbon ratio in...
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5026951 |
Process for paraffin isomerization with liquid phase adsorptive product separation
A combination isomerization and liquid phase adsorptive separation process is given increased efficiency and cost effectiveness by the elimination of a column for the separation of desorbent...
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4992159 |
Upgrading waxy distillates and raffinates by the process of hydrotreating and hydroisomerization
Waxy distillates, or raffinates containing from as little as 10% wax but more typically about 30% wax or more are upgraded by a process comprising the steps of hydrotreating the waxy oil under...
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4943672 |
Process for the hydroisomerization of Fischer-Tropsch wax to produce lubricating oil (OP-3403)
Fischer-Tropsch wax is converted to a lubricating oil having a high viscosity index and a low pour point by first hydrotreating the wax under relatively severe conditions and thereafter...
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4877919 |
Butane isomerization in the presence of C.sub.5 and C.sub.6 hydrocarbons
Butane is isomerized in the presence of substantial quantities of C 5 and C 6 hydrocarbons using an alumina catalyst having from 0.01 to 0.25 wt. % platinum and 2 to 10 wt. % of a chloride...
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4832819 |
Process for the hydroisomerization and hydrocracking of Fisher-Tropsch waxes to produce a syncrude and upgraded hydrocarbon products
A process for producing a pumpable syncrude from a Fischer-Tropsch wax by fractionating the wax into relatively low boiling fraction containing oxygenate compounds and a relatively high boiling...
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4804803 |
Isomerization with once-through hydrogen
A process for the isomerization of C 4 -C 6 paraffins that uses a highly active catalyst to isomerize the feed in the presence of very little hydrogen. The process is characterized by good...
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4783575 |
Isomerization with cyclic hydrocarbon conversion
A C 4 -C 6 feed to an isomerization zone containing substantial amounts of cyclic hydrocarbons is contacted with a high chloride, platinum alumina catalyst to simultaneously open cyclic...
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4367137 |
Hydrocarbon conversion with an acidic multimetallic catalytic composite
Hydrocarbons are converted by contacting them at hydrocarbon conversion conditions with an acidic multimetallic catalytic composite comprising a combination of catalytically effective amounts of a...
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