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7955498 |
Reduction of organic halide contamination in hydrocarbon products
A method for reducing halide concentration in a hydrocarbon product having an organic halide content which is made by a hydrocarbon conversion process using a halogen-containing acidic ionic liquid...
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7772336 |
Method for producing α-methylstyrene and heat-resistant styrene-based copolymer using the α-methylstyrene
An object of the present invention is to provide highly pure α-methylstyrene by efficiently removing polar substances present in the α-methylstyrene. The present invention discloses a method for p...
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7399891 |
Process for alcohol production by selective ether decomposition
This invention relates to a process for the production of an alcohol, the process comprising (a) reacting an olefin and water in the presence of a catalyst under conditions sufficient to form a...
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7357902 |
Process for the removal of oxygen from olefin-containing process streams
Process for the removal of oxygen from a gas mixture comprising oxygen, at least one olefin, hydrogen, carbon monoxide and optionally at least one alkyne, the ratio of oxygen:hydrogen in the gas...
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6797846 |
Fibrous crystal aggregates, preparation method thereof and use thereof
A crystal substance formed by precipitating as fibrous aggregates by making a metal aliphatic carboxylate dissolve completely in pure water, stirring, and gradually cooling the resulting solution....
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6570045 |
Methods of solidifying low-boiling-point hydrocarbon and handling the same, and regeneration thereof
Disclosed are a method of solidifying a low-boiling-point hydrocarbon, wherein the low-boiling-point hydrocarbon (including hydrocarbons which are gaseous at ordinary temperature) is brought into...
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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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5744685 |
Unsaturated hydrocarbon separation and recovery process
A process is disclosed for the separation and recovery of an unsaturated hydrocarbon from its mixture with at least one other material by the selective and reversible complexation of the...
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5674379 |
Process for removing carbonyl-sulfide from liquid hydrocarbon feedstocks
The present invention relates to a process for removing carbonyl sulfide from a liquid hydrocarbon feedstock, said process comprising the steps of (a) passing said hydrocarbon feedstock over an...
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5639934 |
Process for the desulfurization of sulfur-containing compositions by hydrothermal reaction
A process for the desulfurization of a sulfur-containing composition is described. The process comprises providing a sulfur-containing composition, adding an aqueous medium and a sulfur absorbent...
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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 C2-4 saturated hydrocarbons, is removed, by contacting such α-olefins and saturated hy...
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5463168 |
Process for the removal of hydrogen cyanide from FCC hydrocarbon product gas streams
A process is described wherein the HCN in FCC hydrocarbon gas streams is converted to NH3 over a catalyst. This conversion has the desirable result of decreasing the amount of CN- in the water...
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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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5430225 |
Methods of production of novel molybdenum-sulfide dimers and reactions of the same
Derivatized molybdenum-sulfide dimers of the general formula [(C5 R5 Mo)2 (μ-S)4-x (μ-SR)x ]n are utilized in the solid state, incorporated in permselective membranes and in aqueous solution as c...
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5414194 |
Method of production of novel molybdenum-sulfide dimers and reactions of the same
Derivatized molybdenum-sulfide dimers of the general formula [(C5 R5 Mo)2 (μ-S)4-x (μ-SR)x ]n are utilized in the solid state, incorporated in permselective membranes and in aqueous solution as c...
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5378783 |
Dicyclopentadiene activation method and polymerization composition
A highly polymerizable dicyclopentadiene (DCPD) monomer composition is obtained. The dicyclopentadiene so obtained is highly suitable for ring-opening polymerization by metathesis catalysts. The...
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5371313 |
Purification of hydrocarbon streams
A process is provided for the removal of tertiary butyl chloride from a hydrocarbon stream, wherein the hydrocarbon stream is contacted at a temperature of from about 130° to about 170° C. with a p...
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5268091 |
Method for removing arsenic and phosphorus contained in liquid hydrocarbon cuts, nickel based retaining material
A method for removing arsenic and/or phosphorus from a petroleum charge with a retaining material comprising: (a) from 60 to 97% of a carrier containing, by weight, from 1.5 to 60% of oxide of at...
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5220105 |
Process for purifying d-limonene
A process is provided for the purification of d-Limonene, particularly to remove odorous impurities. The process includes the step of mixing d-Limonene with an oxidizer and separating the oxidizer...
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5177297 |
Method of removing a polymerization catalyst
A process for separating lithium from a conjugated diolefin polymer wherein a solution containing said conjugated diolefin polymer and a lithium compound is contacted with magnesium phosphate,...
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5177301 |
Method of separating isobutylene from a C-4 hydrocarbon fraction using a heteropoly acid on an inert support
Disclosed is a two-step method for separating isobutylene from a C-4 hydrocarbon fraction comprising: a) Reacting the C-4 fraction with a glycol in the presence of a catalyst comprising heteropoly...
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5162597 |
Olefin disproportionation and application thereof
A disproportionation catalyst comprising an ammonium or an alkali metal tungsten oxide and a process for forming disproportionation product using the disproportionation catalyst are disclosed. The...
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5159131 |
Zeolitic para-xylene separation with indan and indan derivatives as heavy desorbent
A chromatographic process able to separate para-xylene from C8 isomers and C9 aromatics. In the process, the para-xylene-containing feed mixture is contacted with an X zeolite adsorbent having...
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5157204 |
Removal of impurities from hydrocarbon feeds
A process for removing carbon monoxide and free oxygen from hydrocarbon-containing fluids comprises contacting the fluid feed with at least one of several supported platinum-containing catalyst...
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5130109 |
Catalyst composition containing segregated platinum and rhodium components
A catalyst composition suitable for three-way conversion of internal combustion engine, e.g., automobile gasoline engine, exhaust gases, includes a catalytic material disposed in two discrete coats...
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5057644 |
Process for the purification of alpha olefins
This invention relates to a process for the purification of an alpha olefinic feedstock contaminated with internal olefins which process comprises contacting said alpha olefinic feedstock with...
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4861939 |
Process for removing arsine from light olefin containing hydrocarbon feedstocks
The present invention relates to a process for removing arsine from a light olefin to containing hydrocarbon feedstock, said process comprising the steps of (a) passing said feedstock over an...
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4849577 |
Process for eliminating jointly arsenic and carbon oxysulfide from an unsaturated hydrocarbon cut in the liquid phase
Process for eliminating jointly arsenic and carbon oxysulfide from an unsaturated hydrocarbon cut, wherein said hydrocarbon cut is contacted with an absorbing mass containing a support and lead...
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4683033 |
Purification of iodine-containing mixtures and compositions useful therefor
Hydrocarbon solutions containing iodine or iodine-containing impurities are rendered essentially color-free by distillation in the presence of small amounts of a hydrocarbon soluble organometallic...
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4435609 |
Isomerization of butene-1 to butene-2 in isobutylene
Isobutylene containing a minor amount, e.g. 0.06-0.10 wt %, of n-butene-1 is subjected to gas phase isomerization using hydrogen and Group VIII metal catalyst to convert the butene-1 to butene-2...
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4419266 |
Corrosion inhibitors containing 3-dialkyl-3-(1-ethylpentyl)-prop-1-yne
An aqueous composition for inhibiting the corrosion of metals is described. The composition comprises a non-oxidizing acid, and, as a corrosion inhibitor, an effective amount of a...
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4393249 |
Process for removing alkynes from C4 hydrocarbon mixtures
A process for removing alkynes from hydrocarbon mixtures, particularly those containing butadiene by reacting the alkynes with hydroxyl group containing organic compounds in the presence of a...
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4191615 |
Process for operating extraction or extractive distillation _apparatus
In order to prevent corrosion of the apparatus in extraction and extractive distillation processes where N-substituted morpholine is employed as the selective solvent an additive is added to the...
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4150063 |
Purification of unsaturated compounds
Gaseous streams containing unsaturated hydrocarbons and carbonyl compounds are contacted with a catalyst comprising at least one metal of group 8, 1b, 2b, 4b, 6b and at least one element from group...
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4147735 |
Separation of organic compounds from mixtures by clathration
A method for the separation of organic compounds by clathration in which there is used as a host a compound of formula I: ##STR1## wherein: Ar1 Ar2 and Ar3 and Ar4, which may be identical or...
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4112009 |
Method for removing acetylenic compounds from saturated, olefinic and dienic hydrocarbons or mixtures thereof
The present invention provides a novel process for the separation of acetylenic compounds from saturated, olefinic and dienic hydrocarbons by etherifying the acetylenic compounds with an acyl...
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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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4083887 |
Carbonyl removal from gaseous streams using ZnS
Gaseous streams containing carbonyl compounds have the carbonyl content reduced by contacting the gaseous streams with a catalyst of ZnS. Reactor effluent from an oxidative dehydrogenation reaction...
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4081354 |
Liquid-liquid extraction process
High efficiency in liquid-liquid extraction operations, such as extracting mercaptans from hydrocarbons with caustic, is obtained over a wide range of flow rates through a single extraction column...
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4066713 |
Process for the addition of organic acids to acetylenic compounds contained in inorganic or organic hydrocarbon streams
A method is disclosed for removing the small fractions of acetylenic compounds from a mixed hydrocarbon stream, the improvement consisting in that said stream is treated with an organic acid in the...
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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'Xn 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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4028223 |
Guard beds in hydrocarbon conversion with an acidic multimetallic catalytic composite
Hydrocarbons are converted by contacting a hydrocarbon charge stock and a hydrogen stream at hydrocarbon conversion conditions, in a reaction zone maintained in a substantially sulfur- and...
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3965206 |
Production of stilbene and styrene
Toluene and toluene derivatives are dehydrocoupled to stilbene and stilbene derivatives in a vapor phase reaction in the presence of a metal oxide. The stilbene products are purified of by-product...
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3927056 |
Hydrido(nitrile)tris(triaryl phosphite)cobalt complexes
Novel cobalt monohydride complexes with triaryl phosphites and organonitriles, e.g., hydridoacetonitriletris(tri-o-tolyl phosphite)cobalt, formed by reducing π-cyclooctenyl-π-cycloocta-1,5-diene c...
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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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3527829 |
PROCESS FOR PRODUCING HIGH-PURITY ISOBUTYLENE
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3510535 |
PROCESS AND PLANT FOR THE PURIFICATION OF TERPHENYL AND/OR ANALOGOUS ORGANIC MATERIALS
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3506732 |
CYCLIC DIENE ADSORPTION WITH ACTIVATED ZINC OXIDE-SILICA-ALUMINA ADSORBENTS
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3504049 |
PURIFICATION OF DETERGENT ALKYLATES
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3819738 |
ALKYNES REMOVAL FROM HYDROCARBON STREAMS
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