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7462277 Continuous method for separating a C4 cut  
In a continuous process for fractionating a C 4 fraction (C 4 ) by extractive distillation using a selective solvent (LM) in an extractive distillation column (EDK), it is proposed that a dividing...
7405339 Catalyst composition comprising a heteropoly acid, zinc, and a support component and processes therefor and therewith  
A process of contacting at least one isoparaffin and at least one C 5 olefin in the presence of a catalyst composition under conversion conditions to provide for converting the at least one...
7355087 Production of 1-alkenes from mixed olefin streams using catalytic distillation  
A catalytic distillation process for isomerizing and separating 1-alkenes from a mixed alkene stream. The process comprises contacting a mixed alkene stream comprising the 1-alkene and homologs...
7332637 Isomerization of olefins with carboxylic acid  
A method of modifying the activity of a solid acid catalyst by contact with a carboxylic acid is presented. The modified catalyst is exposed to a feed mixture including olefins in a reaction zone,...
7132582 Catalytic process for the preparation of isolongifolene  
The present invention relates to a catalytic process for preparation of isolongifolene using nanocrystalline solid super acid. This process is an eco-friendly, single step, solvent free catalytic...
6875901 Olefin isomerization process  
An olefin isomerization process employs a basic metal oxide catalyst, such as magnesium oxide, which retains at least about 85 percent of its initial activity for at least about 168 hours of...
6841713 Process for preparing bicylo[2.2.1] heptane derivatives  
The invention relates to economical and efficient methods for producing 2-methylene-3-methylbicyclo[2,2,1]heptane, 2,3-dimethylbicyclo[2.2.1]hept-2-ene and the like that are useful for materials of...
6768038 Alpha olefin production  
A method for making alpha olefins from internal olefins using catalytic distillation techniques and an olefin double bond isomerization catalyst, and separately recovering said alpha olefins.
6593505 Catalyst of mixed fluorosulfonic acids  
A catalyst comprising A) a stationary acid component selected from the group consisting of a perfluorinated ion exchange polymer on an inert support, a silane modified perfluorosulfonic acid, and a...
6420305 Solid acid catalyst, method for producing the same and reaction method using the same  
A method for producting a solid acid catalyst is provided which produces a shaped material of a solid acid catalyst containing a sulfureous component but have a high activity and having a...
6281400 Process for preparation of a catalytic microcomposite from a silicate and a highly fluorinated ion exchange resin  
The present invention relates to a process for preparing a microcomposite comprising a highly fluorinated ion-exchange polymer containing pendant sulfonate functional groups, said polymer existing...
6215036 Method for producing high purity isobutylene from a butane plus fraction containing isobutylene and butylene-1  
A process for processing a feedstock comprising a major amount of olefinic hydrocarbons having 4 carbon atoms per molecule, including isobutene as well as but-1-ene and but-2-enes, wherein the...
6137023 Process for the production of high purity isobutene combining reactive distillation with hydroisomerisation and skeletal isomerisation  
The invention relates to a process for producing high purity isobutene from a hydrocarbon cut essentially comprising olefinic hydrocarbons containing 4 carbon atoms per molecule including...
5990368 Isomerization of allenes to alkynes with an alkaline-earth metal hydride containing catalyst  
Providing an isomerization process which can isomerize allenes to alkynes less expensively and stably is an assignment to be solved by the present invention and given thereto. The present invention...
5969205 Process for preparing C.sub.4 --C.sub.6 --alkenes having an internal double bond comprising recycling a portion of a product stream  
C 4 -C 6 -alkenes having an internal double bond can be produced by hydroisomerization of C 4 -C 6 -alkenes having a terminal double bond in the presence of H 2 on a catalyst having a content...
5910618 Process for preparing 2,3-dimethyl-2-butene  
2,3-Dimethyl-2-butene is prepared by isomerizing 2,3-dimethyl-1-butene using at least one acid selected from the group consisting of sulfuric acid and sulfonic acids. By this process,...
5877379 Olefin conversion process involving coke suppressor impregnated catalyst  
A composition and an olefin conversion process are disclosed. The composition comprises a zeolite having incorporated therein a coke-suppressing amount of a coke suppressor selected from the group...
5849974 Olefin isomerization process  
Described is a process for isomerizing α-olefin to produce olefinic oil having a viscosity at 100° C. of no more than about 1.6 cSt, a viscosity at 40° C. of no more than about 3.8 cSt, and a...
5569806 Olefin isomerisation process using metallic catalysts impregnated with organic sulphur-containing compounds before loading into the reactor  
The invention concerns a process for the isomerisation of less substituted olefins to more substituted external olefins and/or internal olefins in the absence of diolefins, in the presence of a...
5502269 Process for the isomerization of external olefins to internal olefins concomitantly with diolefin hydrogenation  
The present invention concerns a process for the isomerization of external olefins to internal olefins, the feedstock also containing diolefins, using a palladium based catalyst which contains...
5352846 Process for the production of an olefin-free tert, amyl alkyl ether-rich fraction and a n-pentane rich paraffin fraction  
The simultaneous production of an olefin-free, tert.amyl alkyl, ether-rich fraction an n-pentane-rich paraffin fraction, wherein a charge based on isopentenes is hydrogenated (1) under appropriate...
5304696 Process for olefin isomerization  
A process for the double bond isomerization of olefinic compounds is provided comprising contacting an olefinic compound and a sulfated zirconia catalyst.
5120898 Process for isomerizing hydrocarbons  
A solid strong acid catalyst useful for hydrocarbon reactions, especially for the skeletal isomerization of paraffinic hydrocarbons is provided by supporting sulfate (SO 4 ) and at least one member...
5105043 Sulfuric acid catalysis and methods of use for isomerization of hydrocarbons  
Compositions containing sulfuric acid and one or more of certain chalcogen-containing compounds in which the chalcogen compound/H 2 SO 4 molar ratio is below 2 contain the mono-adduct of sulfuric...
5082986 Process for producing lube oil from olefins by isomerization over a silicoaluminophosphate catalyst  
The present invention relates to a process for producing a C 20 + lube oil from olefins or reducing the pour point of a lube oil comprising isomerizing the olefins over a catalyst comprising an...
5073663 Increasing the level of 2-methyl-2-butene in isoamylene  
A method for increasing the ratio of 2-methyl-2-butene (2MB2) to 2-methyl-1-butene (2MB1) in isoamylenes involves fractionating a feedstream containing tertiary amyl methyl ether (TAME) and...
5008466 Process for the isomerization of alkenes having a terminal double bond to give alkenes having an internal double bond  
Alkenes having a terminal double bond can be isomerized to give alkenes having an internal double bond if alkenes having a terminal double bond or hydrocarbon feedstock having a content of alkenes...
4835328 Process for the production of 2,3-dimethylbutene-1 from propene  
2,3-dimethylbutene-1 (2,3-DMB1) is produced from propene by a process comprising the steps of: (A) converting propene in one or more stages to a product comprising 2,3-dimethylbutene-2...
4724274 Process for producing 2-methyl-2-butene from a 5 carbon atom olefins cut containing 2-methyl-1-butene and at least one n-pentene  
Process for producing 2-methyl-2-butene from a charge containing olefins of 5 carbon atoms, including 2-methyl-1-butene and at least one n-pentene, wherein a mixture of said charge with hydrogen...
4672147 Method for isomerizing olefins using acidic composite catalysts  
This invention provides a method for isomerizing olefins using a catalyst product which is a composite of a perfluorinated polymersulfonic acid and an anion-stabilizing agent such as...
4544780 Catalytic isomerization of tertiary olefins  
A process for the isomerization of a tertiary double bonded olefin having a hydrogen atom attached to a carbon atom vicinal to the tertiary carbon of the double bond comprises treating the olefin...
4482775 Isomerization of C.sub.4 alkenes  
A method for isomerizing isobutene or n-butene to produce a mixture of isobutene and normal butene, and polymerizing at least a portion thereof to produce isobutene/n-butene codimer, which...
4396790 Light olefinic hydrocarbon isomerization process  
A hydrocarbon conversion process for light olefin isomerization is disclosed. The feed stream is admixed with the overhead vapor stream of a fractionation column, which also acts as a feed stream...
4367362 Process for the isomerization of N-alkenes  
A process for the catalytic skeleton isomerization of n-alkenes to isoalkenes comprises contacting the n-alkene with a fluorinated aluminum oxide as the catalyst at temperatures of 250°-550° C.,...
4288643 Process for preparing 2,3-dimethyl-butene-2  
A process for the preparation of 2,3-dimethylbutene-2 is disclosed, which comprises the steps of converting isovaleraldehyde to isopropylacrolein, hydrogenating α-isopropylacrolein to form...
4236037 Process for the separation of olefins  
A butene mixture is separated to yield a n-butene rich product and an isobutylane rich product in a fractionator system. Other suitable olefins may be separated in a similar manner.
4217461 Olefinic hydrocarbon isomerization process  
A process for the isomerization of normal olefinic hydrocarbons is disclosed. The feed stream is passed through a first reaction zone and is then cooled sufficiently to cause the condensation of...
4190612 Regioselective isomerization at carbon atom vicinal to doubly bonded tertiary carbon atom by sulfur dioxide catalysis  
Beta pinene is converted to alpha pinene in liquid sulfur dioxide. The process is a regioselective isomerization of organic compounds having a carbon-carbon double bond at a tertiary carbon atom,...
4168284 Alpha olefin isomerization in preparing alkane phosphonic acids and intermediates  
Preparation of long chain alkane phosphonic acids involves reacting alpha olefin with macroreticular strong acid cation exchange resin to isomerize the olefin, reacting resulting internally...
4132745 Process for isomerizing 1-butene to 2-butene  
Process for isomerizing 1-butene to 2-butene by contacting 1-butene, at a temperature from 50 to 140° C, in the presence of hydrogen, with an isomerization catalyst containing a noble metal from...
4104321 Process for the separation of olefins  
A butene mixture is separated to yield an n-butene rich product and an isobutylene rich product in a fractionator system. The fractionator reflux is isomerized before introduction into the...
4048243 Method for the production of ethylbenzene  
Method for the production of ethylbenzene by the dehydrogenation of cycloolefins containing 8 carbon atoms and two double bonds in the presence of aromatization catalysts. The cycloolefin ring...
3962367 Olefin isomerization using a cobalt-sulfur catalyst  
Double bond isomerization of olefins utilizing a catalyst comprising cobalt and sulfur on a porous carrier; the catalyst being prepared by forming an initial composite of the cobalt with the...
3956413 Hydrocarbon isomerization catalyst and process  
A hydrocarbon isomerization catalyst composition, comprising a combination of catalytically effective amounts of a platinum or palladium component, an iridium component, a germanium component, a...
3920765 Inhibition of polymerization during the isomerization of olefins  
There is disclosed an improved process for the isomerization of 1-olefins containing tertiary carbon atoms by means of a catalyst comprising sulfonated ion-exchange resins. The improvement...
3919341 Olefin isomerization process  
Double bond isomerization of olefins utilizing a catalyst comprising nickel and sulfur on a porous carrier; the catalyst being prepared by forming an initial composite of the nickel with the...
3919340 Hydrocarbon isomerization process  
Isomerizable hydrocarbons are isomerized using a catalytic composite comprising a combination of a platinum or palladium component, an iridium component, a germanium component and a halogen...
3898179 Cobalt-and sulfur-containing olefin isomerization process catalyst  
Double bond isomerization of olefins utilizing a catalyst comprising cobalt and sulfur on a porous carrier; the catalyst being prepared by forming an initial composite of the cobalt with the...
3619408 HYDROISOMERIZATION OF MOTOR FUEL STOCKS  
A method of obtaining an improved octane rating by hydroisomerization which involves separating a stock into two portions, individually hydroisomerizing the portions for olefin conversion and...
3531545 ISOMERIZATION OF 1-OLEFINS TO 2-OLEFINS  
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