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11093 results about "Alkane" patented technology
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In organic chemistry, an alkane, or paraffin (a historical name that also has other meanings), is an acyclic saturated hydrocarbon. In other words, an alkane consists of hydrogen and carbon atoms arranged in a tree structure in which all the carbon–carbon bonds are single. Alkanes have the general chemical formula CₙH₂ₙ₊₂. The alkanes range in complexity from the simplest case of methane (CH₄), where n = 1 (sometimes called the parent molecule), to arbitrarily large and complex molecules, like pentacontane (C₅₀H₁₀₂) or 6-ethyl-2-methyl-5-(1-methylethyl) octane, an isomer of tetradecane (C₁₄H₃₀).
Premium synthetic lubricant base stock having at least 95% non-cyclic isoparaffins
InactiveUS6080301ARefining to change hydrocarbon structural skeletonHydrocarbon purification/separationParaffin waxAlkane
A premium synthetic lubricating oil base stock having a high VI and low pour point is made by hydroisomerizing a Fischer-Tropsch synthesized waxy, paraffinic feed wax and then dewaxing the hydroisomerate to form a 650-750 DEG F.+ dewaxate. The waxy feed has an initial boiling point in the range of about 650-750 DEG F., from which it continuously boils up to at least 1050 DEG F. and has a T90-T10 temperature difference of at least 350 DEG F. The feed is preferably hydroisomerized without any pretreatment, other than optional fractionation. The 650-750 DEG F.+ dewaxate is fractionated into two or more base stocks of different viscosity.
Owner:EXXON RES & ENG CO
Production of diesel fuel from vegetable and animal oils
A process for producing a fuel composition from vegetable and / or animal oil comprises hydrodeoxygenating and hydroisomerizing the oil in a single step. The fuel composition has acceptable lubricity and comprises a mixture of C14 to C18 paraffins having a ratio of iso to normal paraffins of 2 to 8 and less than 5 ppm sulfur.
Owner:BEN GURION UNIVERSITY OF THE NEGEV
Method for manufacturing alkylate oil with composite ionic liquid used as catalyst
ActiveUS20040133056A1Increase contentRaise the ratioOrganic chemistry methodsLiquid hydrocarbon mixtures productionAlkaneIonic liquid
The present invention pertains to a method for manufacturing alkylate oil using a composite ionic liquid as catalyst. A mixture of isobutane and C4 olefins is used as the raw material, and a composite ionic liquid is used as catalyst to carry out an alkylation reaction. The alkane / olefin ratio in the raw material is higher than 1:1. In the composition of the aforementioned composite ionic liquid catalyst, the cations come from a hydrohalide of an alkyl-containing amine or pyridine, while the anions are composite coordinate anions coming from two or more metal compounds. One of the metal compounds is an aluminum compound, while other metal compounds are compounds of Group IB and Group IIB elements of the Periodic Table and the transition metals. The present invention also provides a design of static mixer reaction apparatus that can realize the aforementioned manufacturing method. The method of the present invention increases the selectivity of the alkylation reaction to give the alkylation product a relatively high octane number and further increase the product yield. Also, the manufacturing operation is simplified, and the cost can be reduced. This method is an environmentally friendly method that will not pollute the environment.
Owner:CHINA UNIV OF PETROLEUM (BEIJING)
Synthesis of liquid fuels from biomass
ActiveUS20100076233A1Hydrocarbon by metathesis reactionLiquid hydrocarbon mixture productionFuranAlkane
Processes and reactor systems are provided for the conversion of oxygenated hydrocarbons to paraffins useful as liquid fuels. The process involves the conversion of water soluble oxygenated hydrocarbons to oxygenates, such as alcohols, furans, ketones, aldehydes, carboxylic acids, diols, triols, and / or other polyols, followed by the subsequent conversion of the oxygenates to paraffins by dehydration and alkylation. The oxygenated hydrocarbons may originate from any source, but are preferably derived from biomass.
Owner:VIRENT
Low-temperature hydrogen production from oxygenated hydrocarbons
InactiveUS6964757B2Reduce riskWeaken energyHydrogen productionHydrogen/synthetic gas productionSteam reformingAlkane
Disclosed is a method of producing hydrogen from oxygenated hydrocarbon reactants, such as methanol, glycerol, sugars (e.g. glucose and xylose), or sugar alcohols (e.g. sorbitol). The method takes place in the condensed liquid phase. The method includes the steps of reacting water and a water-soluble oxygenated hydrocarbon in the presence of a metal-containing catalyst. The catalyst contains a metal selected from the group consisting of Group VIIIB transitional metals, alloys thereof, and mixtures thereof. The disclosed method can be run at lower temperatures than those used in the conventional steam reforming of alkanes.
Owner:WISCONSIN ALUMNI RES FOUND
Topologically segregated, encoded solid phase libraries comprising linkers having an enzymatically susceptible bond
The invention relates to libraries of synthetic test compound attached to separate phase synthesis supports. In particular, the invention relates to libraries of synthetic test compound attached to separate phase synthesis supports that also contain coding molecules that encode the structure of the synthetic test compound. The molecules may be polymers or multiple nonpolymeric molecules. Each of the solid phase synthesis support beads contains a single type of synthetic test compound. The synthetic test compound can have backbone structures with linkages such as amide, urea, carbamate (i.e., urethane), ester, amino, sulfide, disulfide, or carbon-carbon, such as alkane and alkene, or any combination thereof. Examples of subunits suited for the different linkage chemistries are provided. The synthetic test compound can also be molecular scaffolds, such as derivatives of monocyclic of bicyclic carbohydrates, steroids, sugars, heterocyclic structures, polyaromatic structures, or other structures capable of acting as a scaffolding. Examples of suitable molecular scaffolds are provided. The invention also relates to methods of synthesizing such libraries and the use of such libraries to identify and characterize molecules of interest from among the library of synthetic test compound.
Owner:AVENTIS PHARMA INC
Process for manufacturing lubricating base oil with high monocycloparaffins and low multicycloparaffins
InactiveUS20050133409A1Improve Oxidation StabilityHigh viscosity indexTreatment with hydrotreatment processesAdditivesSyngasMolecular sieve
A process for manufacturing a lubricating base oil by: a) performing Fischer-Tropsch synthesis on syngas to provide a product stream; b) isolating from said product stream a substantially paraffinic wax feed having less than about 30 ppm total nitrogen and sulfur, and less than about 1 wt % oxygen; c) dewaxing said feed by hydroisomerization dewaxing using a shape selective intermediate pore size molecular sieve comprising a noble metal hydrogenation component, wherein the hydroisomerization temperature is between about 600° F. (315° C.) and about 750° F. (399° C.), to produce an is dimerized oil; and d) hydrofinishing said isomerized oil to produce a lubricating base oil having specific desired properties.
Owner:CHEVROU USA INC
Method for manufacturing alkylate oil with composite ionic liquid used as catalyst
ActiveUS7285698B2High selectivityImprove production yieldOrganic chemistry methodsLiquid hydrocarbon mixtures productionAlkaneIonic liquid
Owner:CHINA UNIV OF PETROLEUM (BEIJING)
Low-temperature hydrogen production from oxygenated hydrocarbons
InactiveUS6964758B2High energy costWeaken energyHydrogen productionHydrogen/synthetic gas productionSteam reformingAlkane
Disclosed is a method of producing hydrogen from oxygenated hydrocarbon reactants, such as glycerol, glucose, or sorbitol. The method can take place in the vapor phase or in the condensed liquid phase. The method includes the steps of reacting water and a water-soluble oxygenated hydrocarbon having at least two carbon atoms, in the presence of a metal-containing catalyst. The catalyst contains a metal selected from the group consisting of Group VIII transitional metals, alloys thereof, and mixtures thereof. The disclosed method can be run at lower temperatures than those used in the conventional steam reforming of alkanes.
Owner:WISCONSIN ALUMNI RES FOUND
Finished lubricating comprising lubricating base oil with high monocycloparaffins and low multicycloparaffins
ActiveUS20050133407A1Improve Oxidation StabilityReduce wearRefining to change hydrocarbon structural skeletonLiquid hydrocarbon mixture productionMolecular sieveWax
A process for manufacturing a finished lubricant by: a) performing Fischer-Tropsch synthesis on syngas to provide a product stream; b) isolating from said product stream a substantially paraffinic wax feed having less than about 30 ppm total nitrogen and sulfur, and less than about 1 wt % oxygen; c) dewaxing said feed by hydroisomerization dewaxing using a shape selective intermediate pore size molecular sieve comprising a noble metal hydrogenation component, wherein the hydroisomerization temperature is between about 600° F. (315° C.) and about 750° F. (399° C.), to produce an isomerized oil; and d) hydrofinishing said isomerized oil, whereby a lubricating base oil is produced having specific desired properties; and e) blending the lubricating base oil with at least one lubricant additive.
Owner:CHEVROU USA INC
Catalyst and process of paraffin hydrocarbon conversion
InactiveUS20040077914A1Improve solubilityEasy to useHydrocarbon by isomerisationHydrocarbon by hydrogenationAlkanePtru catalyst
A catalyst composition and process for the conversion of linear and / or branched paraffin hydrocarbons based on the use of an ionic liquid catalyst in combination with a Brønsted Acid, which provides a catalytic composition with an increased activity compared with said ionic liquid. Under suitable reaction conditions this conversion is leading to paraffin hydrocarbon fraction with higher octane number.
Owner:HALDOR TOPSOE AS
Process for the manufacture of diesel range hydro-carbons
ActiveUS20070006523A1Improve low temperature performanceBig ratioBiofuelsLiquid carbonaceous fuelsChemical industryAlkane
The invention relates to chemical industry and is directed to the production of middle distillate from vegetable oils. In the first step of the production method, the fatty acids or triglycerides of said vegetable oils are hydrogenated to give n-paraffins, and in the second step, the n-paraffins are catalytically converted to paraffins with branched chains. Using this process having two steps, a high-quality middle distillate useful as a component of diesel fuels without any particular specifications may be produced.
Owner:NESTE OIL OY
Process for conversion of biomass to fuel
ActiveUS7816570B2Meet growth needsEasy to processFatty acid esterificationRefining to change hydrocarbon structural skeletonAlkaneChain length
Owner:NORTH CAROLINA STATE UNIV
Low-carbon alkane dehydrogenation catalyst and preparation method thereof
ActiveCN101940922AEvenly distributedEnhanced charcoal capacityCatalyst activation/preparationHydrocarbonsAlkaneDehydrogenation
The invention discloses a low-carbon alkane dehydrogenation catalyst and a preparation method thereof. The catalyst is prepared from chromium serving as an active metal ingredient, alkali metal serving as an auxiliary catalytic ingredient and chromium-containing aluminum oxide serving as a carrier, wherein the weight content of the chromium oxide in the carrier is 2.0 to 15.0 percent. In the method, the active metal ingredient, namely chromium, is introduced into the aluminum oxide carrier by partially using a kneading method and partially using an immersion method; pseudo-boehmite mixed with chromium is processed by adopting a three-step roasting method and a hydrothermal method; and thus, the porous structure and the surface character of the carrier can be improved, the content and the distribution of the active metal chromium in the carrier and the mutual effect between the active metal and the aluminum oxide are further modulated, the activity and the stability of the catalyst are improved, the carbon depositing resistance of the catalyst is enhanced, and the service life of the catalyst is prolonged.
Owner:CHINA PETROLEUM & CHEM CORP +1
Process for producing bio-derived fuel with alkyl ester and iso-paraffin components
InactiveUS20080163543A1Improve low temperature performanceImprove the lubrication effectBiofuelsLiquid carbonaceous fuelsAlkaneParaffin oils
A process for producing a diesel fuel of biological origin. The process includes a biological component to be trans-esterified into a fatty acid alkyl ester. A fraction of the fatty acid alkyl ester is hydrodeoxygenated and hydroisomerized to produce an iso-paraffinic hydrocarbon. The fatty acid alkyl ester and the iso-paraffin components are combined into a middle distillate product suitable for direct use as diesel or jet fuel.
Owner:REG SYNTHETIC FUELS LLC
Medical aerosol formulations
InactiveUS6461591B1Improve dosage accuracyIncrease doseBiocideDispersion deliveryAlkaneAerosol spray
A pressure-liquefied propellant mixture for aerosols, comprising a fluorinated alkane, in particular 1,1,1,2-tetrafluoroethane and / or 1,1,1,2,3,3,3-heptafluoropropane, and carbon dioxide, makes possible an improvement of the wetting properties of pharmaceutically active compounds, with which the formulation problems existing with hydrofluoroalkanes in relation to suspension as well as solution aerosols can be overcome and thus improved medicinal aerosol formulations can be obtained. With the aid of carbon dioxide, it is also possible to specifically influence the pressure and thus the particle size distribution and also by displacement of oxygen from the hydrofluoroalkanes to improve the storage stability of oxidation-sensitive active compounds.
Owner:JAGOTEC AG
Production of Aviation Fuel from Biorenewable Feedstocks
ActiveUS20090158637A1Refining to change hydrocarbon structural skeletonHydrocarbon purification/separationAlkaneVegetable oil
A process has been developed for producing aviation fuel from renewable feedstocks such as plant oils and animal fats and oils. The process involves treating a renewable feedstock by hydrogenating and deoxygenating to provide n-paraffins having from about 8 to about 24 carbon atoms. At least some of the n-paraffins are isomerized to improve cold flow properties. At least a portion of the paraffins are selectively cracked to provide paraffins meeting specifications for different aviation fuels such as JP-8.
Owner:UOP LLC
Alcohol-free transdermal analgesic composition and processes for manufacture and use thereof
InactiveUS7052715B2Reduced shelf lifeImprove permeabilityOrganic active ingredientsBiocideAlkaneAlcohol free
Owner:ALL NATURAL FMG
Isoparaffinic base stocks by dewaxing fischer-tropsch wax hydroisomerate over Pt/H-mordenite
A high VI and low pour point lubricant base stock is made by hydroisomerizing a high purity, waxy, paraffinic Fischer-Tropsch synthesized hydrocarbon fraction having an initial boiling point in the range of 650-750° F., followed by catalytically dewaxing the hydroisomerate using a dewaxing catalyst comprising a catalytic platinum component and an H-mordenite component. The hydrocarbon fraction is preferably synthesized by a slurry Fischer-Tropsch using a catalyst containing a catalytic cobalt component. This combination of the process, high purity, waxy paraffinic feed and the Pt / H-mordenite dewaxing catalyst, produce a relatively high yield of premium lubricant base stock.
Owner:EXXON RES & ENG CO
Process of paraffin hydrocarbon isomerisation catalysed by an ionic liquid in the presence of a cyclic hydrocarbon additive
InactiveUS6797853B2High selectivityHigh degree of branchingHydrocarbon by isomerisationCatalytic crackingAlkaneIonic liquid
Owner:HALDOR TOPSOE AS
Production of liquid alkanes in the jet fuel range (c8-c15) from biomass-derived carbohydrates
Described is a method for making a composition comprising alkanes. The composition is suitable for use as a liquid transportation fuel in general, and jet fuel in particular. The method includes dehydrating a feedstock solution comprising a carbohydrate, in the presence of an acid catalyst, to yield at least one furan derivative compound, in a reaction vessel containing a biphasic reaction medium: an aqueous reaction solution and a substantially immiscible organic extraction solution. The furan derivative compound is then subjected to a self-aldol condensation reaction or a crossed-aldol condensation reaction with another carbonyl compound to yield a beta-hydroxy carbonyl compound and / or an alpha-beta unsaturated carbonyl compound. The beta-hydroxy carbonyl and / or alpha-beta unsaturated compounds are then hydrogenated to yield a saturated or partially saturated compound, followed by hydrodeoxygenation (e.g., dehydrating and hydrogenating) of the saturated or partially saturated compound to yield a composition of matter comprising alkanes.
Owner:WISCONSIN ALUMNI RES FOUND
Process for conversion of biomass to fuel
ActiveUS20090069610A1Meet growth needsEasy to processFatty acid esterificationRefining to change hydrocarbon structural skeletonAlkaneChain length
The present invention is directed to processes for the direct conversion of lipidic biomass fuelstock to combustible fuels. In particular, the invention provides a process for the direct conversion of animal fats to transportations fuels suitable as replacement for petroleum-derived transportation fuels. In one embodiment, the method comprises the steps of hydrolyzing a lipidic biomass to form free fatty acids, catalytically deoxygenating the free fatty acids to form n-alkanes, and reforming at least a portion of the n-alkanes into a mixture of compounds in the correct chain length, conformations, and ratio to be useful transportation fuels. Particularly, the product prepared according to the invention comprises mixtures of hydrocarbon compounds selected from the group consisting of n-alkanes, isoalkanes, aromatics, cycloalkanes, and combinations thereof.
Owner:NORTH CAROLINA STATE UNIV
Complex comprising oxidative dehydrogenation unit
ActiveUS20140249339A1Consumes lotThermal non-catalytic crackingSequential/parallel process reactionsAlkaneDehydrogenation
Oxidative dehydrogenation of paraffins to olefins provides a lower energy route to produce olefins. Oxidative dehydrogenation processes may be integrated with a number of processes in a chemical plant such as polymerization processes, manufacture of glycols, and carboxylic acids and esters. Additionally, oxidative dehydrogenation processes can be integrated with the back end separation process of a conventional steam cracker to increase capacity at reduced cost.
Owner:NOVA CHEM (INT) SA
Steam methane reforming method
ActiveUS7037485B1Reduce fuel usageReduce firing rateHydrocarbon from carbon oxidesHydrogen separation using solid contactMethane reformerAlkane
A steam methane reforming method in which a feed stream is treated in a reactor containing a catalyst that is capable of promoting both hydrogenation and partial oxidation reactions. The reactor is either operated in a catalytic hydrogenation mode to convert olefins into saturated hydrocarbons and / or to chemically reduce sulfur species to hydrogen sulfide or a catalytic oxidative mode utilizing oxygen and steam to prereform the feed and thus, increase the hydrogen content of a synthesis gas produced by a steam methane reformer. The method is applicable to the treatment of feed streams containing at least 15% by volume of hydrocarbons with two or more carbon atoms and / or 3% by volume of olefins, such as a refinery off-gas. In such case, the catalytic oxidative mode is conducted with a steam to carbon ratio of less than 0.5, an oxygen to carbon ratio of less than 0.25 and a reaction temperature of between about 500° C. and about 860° C. to limit the feed to the steam methane reformer to volumetric dry concentrations of less than about 0.5% for the olefins and less than about 10% for alkanes with two or more carbon atoms.
Owner:PRAXAIR TECH INC
Double function catalyst for synthesizing polycarbonate
ActiveCN101020747AMild reaction conditionsThe process is simple and convenientAlkaneQuaternary ammonium cation
The present invention relates to one kind of high activity catalyst for catalyzing and activating CO2 to react with alkane epoxide to synthesize polycarbonate. The high activity catalyst is tetradentate Schiff base metal complex with double function, i. e., it has both electrophlic center originated from the metal ion in the complex and nucleophilic center originated from the quaternary ammonium salt or quaternary phosphonium salt connected to the benzene ring in the complex. The catalyst can catalyze the reaction of CO2 and alkane epoxide effectively to prepare polycarbonate.
Owner:DALIAN UNIV OF TECH
Antimicrobial coating compositions
ActiveUS20100137472A1Reduce complicationsSuitable for useAntifouling/underwater paintsPretreated surfacesAlkaneCetrimide
Antimicrobial compositions and methods are disclosed. The antimicrobial compositions are particularly useful in providing antimicrobial capability to a wide-range of medical devices. In one aspect, the invention relates to a mild solvent coating using acrylate-type mild solution coating. These compositions include rheological modifiers as necessary. The compositions also include antimicrobial agents, which may be selected from a wide array of agents. Representative antimicrobial agents include cetyl pyridium chloride, cetrimide, alexidine, chlorexidine diacetate, benzalkonium chloride, and o-phthalaldehyde. Additionally, the compositions comprise one or more suitable mild solvents, such as a low molecular weight alcohol, alkane, ketone, and combinations thereof.
Owner:BECTON DICKINSON & CO
Surface-modified wick for diagnostic test strip
InactiveUS6967105B2Improve accuracyGood precisionAnalysis using chemical indicatorsMaterial analysis by observing effect on chemical indicatorAlkaneBlood sugar
A wicking material is disclosed that exhibits a horizontal wicking velocity of at least about 1.0 millimeter per second when contacted with a physiological fluid such as blood, lymph or cellular interstitial fluid. This high wicking rate is achieved by means of treatment of a fibrous wicking material candidate with a low temperature gas plasma, particularly a glow discharge gas plasma formed in a gaseous blend made up predominantly of a mixture of oxygen with a saturated alkane chosen from the group consisting of methane, ethane and propane. Diagnostic test strips made with the surface-modified wicking material, and containing an immobilized reagent means for analysis of an analyte in a physiological fluid, show improved performance in terms of increased accuracy, finer precision of analyses, reduced time of analysis, a smaller fluid sample size requirement, and improved compliance with manufacturing standards resulting in lower manufacturing costs blood sugar determinations.
Owner:QUESTSTAR MEDICAL
Catalytic process for converting renewable resources into paraffins for use as diesel blending stocks
A process for converting renewable resources such as vegetable oil and animal fat into paraffins in a single step which comprises contacting a feed which is a renewable resources with hydrogen and a catalyst which comprises a non-precious metal and an oxide to produce a hydrocarbon product having a ratio of odd-numbered hydrocarbons to even-numbered hydrocarbons of at least 2:1.
Owner:REFINING TECH SOLUTIONS LLC
Premium synthetic lubricant base stock (Law734) having at least 95% noncyclic isoparaffins
Owner:EXXON RES & ENG CO
Condensing mode operation of gas-phase polymerization reactor
A continuous gas fluidized bed polymerization process for the production of a polymer from a monomer including continuously passing a gaseous stream comprising the monomer through a fluidized bed reactor in the presence of a catalyst under reactive conditions; withdrawing a polymeric product and a stream comprising unreacted monomer gases; cooling said stream comprising unreacted monomer gases to form a mixture comprising a gas phase and a liquid phase and reintroducing said mixture into said reactor with sufficient additional monomer to replace that monomer polymerized and withdrawn as the product, wherein said liquid phase is vaporized, and wherein the stream comprises an induced condensing agent selected from the group consisting of alkanes, cycloalkanes, and mixtures thereof, the induced condensing agent having a normal boiling point less than 25° C.
Owner:UNIVATION TECH LLC
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