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7411107 |
Alkene separation process
A process for the oxidation of a C 2 to C 4 alkane to produce the corresponding alkene and carboxylic acid which process comprises separation of the alkene from a mixture of the alkene, the...
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7361800 |
Process for the separation of olefins from paraffins using membranes
Chitosan membranes chelated with silver or cuprous material may be used to separate olefins from a mixture of olefins and paraffins. The feed stream is humidified, demisted, treated to remove...
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7019188 |
Use of ionic liquids to separate olefins, diolefins and aromatics
The present invention relates to the separation of olefins, diolefins and lower aromatics from mixed streams of hydrocarbons using ionic liquids in the absence of metal compounds. The present...
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6395952 |
Chemical absorption process for recovering olefins from cracked gases
The present invention provides a method for recovering high purity olefins from cracked gas effluents or other paraffin/olefin gaseous mixtures by use of a chemical absorption process.
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6042798 |
Method of desulfurization of hydrocarbons
A method for the desulfurization of hydrocarbons by desulfurizing unsaturated hydrocarbons or hydrocarbon materials containing unsaturated hydrocarbons, in the presence or absence of hydrogen,...
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5866749 |
Sulfur and thiol removal from reactive hydrocarbons
Sulfur and mercaptans in reactive hydrocarbon streams are removed by contacting the hydrocarbons at mild temperatures with a hydrogen reduced metal oxide such as a hydrogen reduced copper, zinc...
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5639935 |
Process for recovering olefins from gaseous mixtures
Ethylene and propylene are recovered from a mixture thereof with other hydrocarbons by: (a) feeding the mixture to a separation zone with a top and a bottom; (b) feeding to the top above the...
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5625116 |
Process for the removal of carbon monoxide from alpha-olefins and saturated hydrocarbons
The carbon monoxide contained in α-olefins and saturated hydrocarbons, in particular α-olefins and C 2 -4 saturated hydrocarbons, is removed, by contacting such α-olefins and saturated...
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5523512 |
Copper (I) carboxylate-containing olefin complexing reagents
Complexing reagents are provided which comprise Cu(I) carboxylates or Cu(I) sulfonates and high molecular weight olefins. The invention complexing reagents are useful for separating olefins from...
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5516966 |
Methods of preparing cuprous and cupric carboxylates
A method for preparing cuprous carboxylates (Cu(I) carboxylates) is provided wherein Cu(II) carboxylates are reacted with copper powder in an aromatic solvent under a reducing atmosphere,...
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5498824 |
Methods of preparing cuprous and cupric carboxylates
A method for preparing cuprous carboxylates (Cu(I) carboxylates) is provided wherein Cu(II) carboxylates are reacted with copper powder in an aromatic solvent under a reducing atmosphere,...
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5446232 |
Removing oxygen from hydrocarbon gases
Disclosed is a method and apparatus for removing oxygen from hydrogen, hydrocarbon, or halogenated hydrocarbon gas which contains about 0.01 to about 10 mole % oxygen. The oxygen removal is...
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5245106 |
Method of eliminating mercury or arsenic from a fluid in the presence of a mercury and/or arsenic recovery mass
The invention relates to a method of eliminating mercury or arsenic from a fluid in the presence of a solid mass for the recovery of mercury and/or arsenic. The said mass contains copper and...
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5202521 |
Monoolefin/paraffin separation by selective absorption
A selective absorption process for separating C 2 -C 4 alkenes (in particular ethylene) from C 1 -C 5 alkanes with a liquid extractant comprising dissolved copper(I) compound(s), in particular...
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5191153 |
Method for preparing olefin complexing reagents and use thereof
Olefin complexing reagents comprising Cu(I) carboxylate/BF, adducts in aromatic solvents and a method of preparation therefor, and use of said reagents in the separation of olefins from paraffins...
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4691074 |
Monochlorobiphenyl:cuprous aluminum tetrachloride
A compound, monochloro biphenyl: CuAlCl 4 , has been isolated and proven to exist. Monochloro biphenyl can be any one of the possible three isomers, ortho, meta and para or can be any mixture of...
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4605780 |
Reactivation of rhodium complex hydroformylation catalysts
Process for removing alkyl substituted phosphine from a hydroformylation medium and enhancing the rhodium complex catalyst contained therein via an oxygenation treatment.
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4525180 |
Process for recovery of ethylene from gaseous mixture
With application of new liquid absorbent, comprised of a compound selected from a group composed of silver halide and cuprous halide, an aluminium halide, a polymer selected from a group composed...
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4471152 |
Separation of olefin mixtures by Cu (I) complexation
A process for separating a gaseous alkene mixture into components thereof which comprises contacting the gaseous alkene mixture with a cuprous complex of the formula [Cu(facac)] x L y where facac...
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4458095 |
Use of zinc and copper (I) salts to reduce sulfur and nitrogen impurities during the pyrolysis of plastic and rubber waste to hydrocarbons
An improvement in a process for the pyrolytic conversion of rubber and plastic waste to hydrocarbon products which results in reduced levels of nitrogen and sulfur impurities in these products. The...
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4424121 |
Selective removal of nitrogen-containing compounds from hydrocarbon mixtures
A method is disclosed for reducing the nitrogen content of hydrocarbon liquids. The method comprises contacting the hydrocarbon liquid with a solid metal salt capable of selectively extracting...
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4400564 |
Separation of monoolefins from diolefins
A process and apparatus for separating monoolefins from diolefins comprising contacting a mixture of monoolefins and diolefins with a complexing agent selected from the group consisting of...
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4398052 |
Separation of monoolefins from other monoolefins
A process and apparatus for separating monoolefins from other monoolefins comprising contacting a mixture of different monoolefins with a complexing agent selected from the group consisting of...
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4387055 |
Copper oxalate complexes
A cuprous oxalate complex of the formula Cu 2 (CO) n L m C 2 O 4 wherein L is an unsaturated hydrocarbon containing at least one non-aromatic unsaturation and n and m are numbers from 0 to 2.
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4353840 |
Use of amine-aluminum chloride adducts as alkylation inhibitors in a ligand-complexing process
In processes in which liquid sorbents that are solutions in an aromatic hydrocarbon or halogenated aromatic hydrocarbon of a bimetallic salt complex having the generic formula M I M II X n...
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4307262 |
Use of zinc diphenyl as alkylation inhibitor in ligand-complexing process
In processes in which liquid sorbents that are solutions in an aromatic hydrocarbon or halogenated aromatic hydrocarbon of a bimetallic salt complex having the generic formula M I M II X n...
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4304952 |
Use of triphenylboron as alkylation inhibitor in a ligand-complexing process
In processes in which liquid sorbents that are solutions in an aromatic hydrocarbon or halogenated aromatic hydrocarbon of a bimetallic salt complex having the generic formula M I M II X n...
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4185039 |
Selective catalytic oxidation of carbon monoxide in the presence of olefin monomer
Process for the selective catalytic oxidation of carbon monoxide in the presence of olefin monomers without appreciable oxidation of such monomers. According to this process, a gaseous waste stream...
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4141925 |
Separating unequally saturated hydrocarbons with monovalent copper salt solutions in β-methoxypropionitrile
A method of separating proximate boiling-point hydrocarbons using solutions of monovalent copper salts in solvents, said solvents being alkyl-substituted amides and alkyl esters of...
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4132744 |
Process for separating liquid olefin-paraffin mixtures
This invention relates to a process for selectively separating olefins from liquid, aliphatic olefin-paraffin mixtures, said olefins and paraffins each containing from 6 to 20 carbon atoms....
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4129605 |
Recovering styrene by complexing with copper(I) sulfonates
Styrene is recovered from a styrene-rich stream by complexing with a copper(I) sulfonate. The complex is treated to displace the styrene from the complex.
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4108916 |
Purification of saturated hydrocarbons
Aerosol propellants from the class n-butane, isobutane and propane cause increased amounts of corrosion with greater than 5 parts per million unsaturates as impurities. Unsaturate levels are...
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4091045 |
Process for the purification of liquid sorbents that comprise bimetallic salt complexes
Liquid sorbents that are solutions in an aromatic hydrocarbon or a halogenated aromatic hydrocarbon of a bimetallic salt complex having the generic formula M I M II X n Aromatic, wherein M I ...
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4066679 |
Bimetallic salts and derivatives thereof, their preparation and use in the complexing of ligands
Bimetallic salts, having the generic formula MM'X n wherein M is a Group IB metal, M' is a Group IIIA metal, X is a halide and n is equal to the sum of the valences of M and M', are prepared by...
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4064190 |
Removal of acetylenic contaminants by copper-tin and/or lead zinc aluminate
Acetylenic compounds are selectively removed by conversion to innocuous materials by contacting hydrocarbon mixtures containing same with a copper-tin and/or lead-zinc aluminate catalyst. In one...
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4053533 |
Oxidation of acetylenic impurities with copper manganite catalyst
Acetylenic compounds are selectively removed from hydrocarbon mixtures containing same by oxidation in the presence of a solid copper-manganese-oxygen catalyst. In one embodiment, acetylenic...
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4049743 |
Selective oxidation of acetylenes
Acetylenic compounds are selectively removed from hydrocarbon mixtures containing same by oxidation in the presence of a copper-manganese-rare earth metal-zinc aluminate catalyst. In one...
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4025574 |
Hydrocarbon separations
A process for the separation and recovery of unsaturated aliphatic hydrocarbons from admixture with saturated aliphatic hydrocarbons which comprises contacting such a mixture with a complexing...
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4014950 |
Process for the purification of liquid sorbents comprising bimetallic salt complexes
Liquid sorbents that are solutions in an aromatic hydrocarbon or halogenated aromatic hydrocarbon of a bimetallic salt complex having the generic formula M I M II X n .Aromatic, wherein M I is a...
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3960976 |
Method for the separation of hydrocarbons
Hydrocarbons are reacted with a tri-halogenoacetate of the formula ##EQU1## wherein X, Y and Z each represents a halogen atom and M represents a mono valent metal of group Ib to form the...
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3933878 |
Ligand complexes of cu(1)salts
Novel compositions of matter herein are claimed and may be represented by the general formula CuA.L, where CuA is a Cu(I) salt of medium to strong Bronsted acids and L is a ligand chosen from a...
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3927176 |
Process for the removal of water from gas streams
Water and certain other impurities are removed from gas streams by contacting the gas streams with a liquid sorbent that comprises a bimetallic salt complex having the generic formula Wherein M I ...
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3923958 |
Method of removing aromatic compounds olefins, acetylenes and carbon monoxide from feed streams
Normal paraffinic hydrocarbons having from 5 to 25 carbon atoms are used to prevent or minimize the foaming that occurs when liquid sorbents that comprise bimetallic salt complexes having the...
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3897511 |
Removal of α-acetylenes from gas streams
Lower alpha-alkynes such as acetylene, methylacetylene, vinylacetylene, and ethylacetylene are effectively removed from hydrocarbon and other gas streams by contacting the contaminated gas with a...
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3875251 |
2-(1-PROPENYL-5-NORBORNENE SEPARATION FROM PIPERYLENE DIMERS BY COMPLEXING WITH COPPER, SILVER, GOLD OR MERCURY COMPOUND
2-(1-PROPENYL)-5-NORBORNENE IS SEPARATED FROM PIPERYLENE DIMERS BY COMPLEX FORMATION WITH A COMPOUND OF COPPER, SILVER, GOLD OR MERCURY.
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3758607 |
INHIBITORS FOR OLEFIN COMPLEXING PROCESS
Combinations of organic phosphines and organic nitrogen bases help stabilize complexing solutions containing cuprous and silver salts whose anionic components are Lewis acids, said salts being...
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3758606 |
CORROSION INHIBITORS FOR CUPROUS TETRACHLOROALUMINATE COMPLEXES
A method is described wherein soluble compounds of antimony, arsenic, and bismuth are dissolved in aromatic hydrocarbon solutions containing cuprous halide-Lewis acid combinations such as cuprous...
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3755153 |
OLEFIN SEPARATION PROCESS USING COPPER-EXCHANGED TYPE X ZEOLITE
An improved process for the separation of olefins from a hydrocarbon feed mixture containing olefins, saturates and contaminant aromatics. The improvement basically comprises employing as an...
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3720604 |
ADSORBING OLEFINS WITH A COPPER-EXCHANGED TYPE Y ZEOLITE
A new composition of matter, a method for the preparation of a copper-exchanged Type Y structured zeolite and a separation process employing the same. The zeolite adsorbent is prepared by a...
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3676516 |
PURIFICATION OF ETHYLENE OR PROPYLENE STREAMS CONTAINING CARBON MONOXIDE
A propylene or ethylene stream containing small quantities of carbon monoxide is contacted with a supported copper oxide catalyst wherein 20 to 95 weight percent of the copper is in the cupric...
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