EP2164932A1 - Nanoparticules de métal et d'oxyde métallique pour une combustion du carburant plus complète - Google Patents

Nanoparticules de métal et d'oxyde métallique pour une combustion du carburant plus complète

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Publication number
EP2164932A1
EP2164932A1 EP08770260A EP08770260A EP2164932A1 EP 2164932 A1 EP2164932 A1 EP 2164932A1 EP 08770260 A EP08770260 A EP 08770260A EP 08770260 A EP08770260 A EP 08770260A EP 2164932 A1 EP2164932 A1 EP 2164932A1
Authority
EP
European Patent Office
Prior art keywords
nano
oxides
sized metal
particles
oxide particles
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP08770260A
Other languages
German (de)
English (en)
Other versions
EP2164932A4 (fr
Inventor
James Kenneth Sanders
Richard Wilson Tock
Duck Joo Yang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
James K And Mary A Sanders Familly LLC
TOCK, RICHARD WILSON
Yang Duck Joo
Original Assignee
Yang Duck Joo
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Yang Duck Joo filed Critical Yang Duck Joo
Publication of EP2164932A1 publication Critical patent/EP2164932A1/fr
Publication of EP2164932A4 publication Critical patent/EP2164932A4/fr
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L10/00—Use of additives to fuels or fires for particular purposes
    • C10L10/10—Use of additives to fuels or fires for particular purposes for improving the octane number
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/02—Liquid carbonaceous fuels essentially based on components consisting of carbon, hydrogen, and oxygen only
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/04—Liquid carbonaceous fuels essentially based on blends of hydrocarbons
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/10—Liquid carbonaceous fuels containing additives
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/10—Liquid carbonaceous fuels containing additives
    • C10L1/103—Liquid carbonaceous fuels containing additives stabilisation of anti-knock agents
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/10—Liquid carbonaceous fuels containing additives
    • C10L1/12—Inorganic compounds
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/10—Liquid carbonaceous fuels containing additives
    • C10L1/12—Inorganic compounds
    • C10L1/1233—Inorganic compounds oxygen containing compounds, e.g. oxides, hydroxides, acids and salts thereof
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L10/00—Use of additives to fuels or fires for particular purposes
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L10/00—Use of additives to fuels or fires for particular purposes
    • C10L10/02—Use of additives to fuels or fires for particular purposes for reducing smoke development
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L10/00—Use of additives to fuels or fires for particular purposes
    • C10L10/12—Use of additives to fuels or fires for particular purposes for improving the cetane number
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/10—Liquid carbonaceous fuels containing additives
    • C10L1/12—Inorganic compounds
    • C10L1/1208—Inorganic compounds elements

Definitions

  • TECHNICAL FIELD Provided are nano-sized metal particles and metal oxide particles to facilitate fuel combustion and methods of improving fuel combustion.
  • BACKGROUND Engine manufacturers continue to seek improved fuel economy through engine design.
  • Alternative approaches in improving fuel economy include formulating new fuels and engine oils.
  • Combustion engines such as automobile engines typically require high octane gasoline for efficient operation.
  • lead was added to gasoline to increase the octane number. Due to health and environmental concerns, however, lead was removed from gasoline. Lead can also poison a catalytic converter dramatically reducing its lifetime.
  • Oxygenates such as methyl-t-butyl ether (MTBE) and ethanol, may be added to gasoline to increase the octane number. While generally less toxic than lead, some suggest MTBE can be linked to ground water contamination.
  • MTBE methyl-t-butyl ether
  • the subject invention provides nano-sized metal particles and nano-sized metal oxide particles that can be used to improve combustion, decrease harmful exhaust emissions, and increase catalytic chemical oxidation of fuel.
  • One aspect of the invention relates to a fuel composition containing a liquid fuel and at least one of nano-sized metal particles, or nano-sized metal oxide particles, or combination thereof.
  • Another aspect of the invention relates to a fuel additive composition containing a carrier/organic solvent and at least one of nano-sized metal particles, or nano-sized metal oxide particles or combination thereof.
  • Other aspects of the invention include methods of making fuel compositions, methods of improving combustion, and methods of increasing catalytic chemical oxidation of a fuel composition.
  • Figure 1 illustrates a bar graph demonstrating the hydrocarbon emissions from various fuels from various engines.
  • Figure 2 illustrates a bar graph demonstrating the octane ratings of various fuel compositions.
  • Nano-sized metal particles and/or nano-sized metal oxide particles are combined with fuel to improve fuel combustion.
  • the nano-sized metal particles may be present in a fuel additive composition which is combined (that is, either suspended or dispersed) with fuel to make a fuel composition, or present in a fuel composition.
  • nano-sized metal particles when nano-sized metal particles are present in a liquid fuel composition which is oxidized in the combustion process, an added energy source is provided.
  • the nano-sized metal particles may increase the catalytic chemical oxidation or combustion of hydrocarbon based fuels. Consequently, an increase in engine power is achieved.
  • nano- sized metal or metal oxide particles or combinations thereof present in a liquid fuel composition provide a catalytic surface capable of supplying oxygen to the combustion process during transient reducing atmospheric episodes generated by the combustion process. Since the combustion process is more complete, an environmentally friendly internal combustion engine fuel is provided.
  • the nano-sized metal or metal oxide particles or combination thereof may also be involved in other reactions that improve the combustion.
  • the nano-sized metal oxide particles can sequester low levels of water which otherwise can contaminate fuels, especially those fuels containing oxygenates such as alcohol. It is believed that this sequestration with the presence of ethanol provides an added benefit by decreasing the sensitivity or difference between the RON and the MON levels for ethanol. The decrease in sensitivity increases the fuels performance when the engine is under load and can give rise to an increased octane rating for the fuel.
  • the nano-sized metal or metal oxide particles may function to form a coating on metal parts within the internal combustion engine, thereby not only adding lubricity but also preventing carbon deposition on the internal engine parts. This reduces engine maintenance. Nano-sized metal or metal oxide particles or combination thereof are added to hydrocarbon based fuels to increase power output during combustion.
  • Combustion processes can occur an order of magnitude faster by a substantially heterogeneous reaction on solid catalytic surfaces (provided by the nano-sized metal and metal oxide particles) than do the same oxidation processes in homogeneous gas phase reactions without the metal and metal oxide particles.
  • the invention thus provides nano sized solid catalyst having a significantly increased surface area needed for more complete combustion.
  • the nano-sized metal particles and metal oxide particles have a size suitable to catalyze the combustion reaction of fuels, yet have 1) an ability to pass through fuel filters and 2) at least substantially combust themselves, or sublime, or otherwise be consumed so that particulate emissions are minimized and/or eliminated.
  • the nano-sized metal particles and metal oxide particles have a size where at least about 90% by weight of the particles have a size from about 1 nm to about 990 nm. In this connection, size refers to average cross-section of a particle, such as diameter.
  • the nano-sized metal particles and metal oxide particles have a size where at least about 90% by weight of the particles have a size from about 1 nm to about 75 nm.
  • the nano-sized metal particles and metal oxide particles have a size where at least about 90% by weight of the particles have a size from about 1.5 nm to about 40 nm. In still yet embodiment, the nano-sized metal particles and metal oxide particles have a size where at least about 90% by weight of the particles have a size from about 2 nm to about 20 nm. In still yet embodiment, the nano-sized metal particles and metal oxide particles have a size where at least about 90% by weight of the particles have a size from about 1 nm to about 10 nm. In another embodiment, about 100% by weight of the particles have any of the sizes described above, including a size of less than about 20 nm.
  • the nano-sized metal particles and metal oxide particles have a surface area suitable to catalyze the combustion reaction of fuels and to increase the rate of combustion compared to using the same amount of catalyst in bulk form. Increased surface area is often better achieved via small sized particles rather than particles with high porosity.
  • the nano-sized metal particles and metal oxide particles have a surface area from about 50 m 2 /g to about 1,000 m 2 /g.
  • the nano-sized metal particles and metal oxide particles have a surface area from about 100 m 2 /g to about 750 m 2 /g.
  • the nano-sized metal particles and metal oxide particles have a surface area from about 150 m 2 /g to about 600 m 2 /g.
  • the nano-sized metal particles and metal oxide particles have a morphology suitable to catalyze the combustion reaction of fuels, increase the rate of combustion compared to using the same amount of catalyst in bulk form, yet have an ability to pass through fuel filters.
  • Examples of the one or more morphologies the nano-sized metal particles and metal oxide particles may have include, spherical, substantially spherical, oval, popcorn-like, plate-like, cubic, pyramidal, cylindrical, and the like.
  • the nano-sized metal particles and metal oxide particles may be crystalline, partially crystalline, or amorphous.
  • the nano-sized metal particles and metal oxide particles contain any material suitable to catalyze the combustion reaction of fuels.
  • materials of metal particles and/or metal oxide particles include one or more of the following (referring to Groups of the Periodic Table of Elements): Group Ha metals, Group Na metal oxides, Group Ilia metals, Group Ilia metal oxides,
  • metal particles and/or metal oxide particles include one or more of the following: magnesium, calcium, strontium, barium, cerium, titanium, zirconium, iron, ruthenium, osmium, cobalt, rhodium, iridium, nickel, palladium, platinum, copper, silver, gold, tin, zinc, aluminum, mixed metal particles, alloy metal particles, calcium oxides, strontium oxides, barium oxides, cerium oxides, titanium oxides, zirconium oxides, iron oxides, ruthenium oxides, osmium oxides, cobalt oxides, rhodium oxides, iridium oxides, nickel oxides, palladium oxides, platinum oxides, copper oxides, silver oxides, gold oxides, tin oxides, zinc oxides, aluminum oxides, mixed metal oxide particles, and mixed metal-metal oxide particles.
  • the nano-sized metal particles and/or metal oxide particles do not contain health hazardous and environmentally non-friendly (by current or future standards) metals and metal oxides.
  • the nano-sized metal particles and/or metal oxide particles do not contain lead and/or lead oxide.
  • the nano-sized metal particles contains mixed metal particles and/or mixed metal oxide particles containing at least two metals/metal oxides, at least three metals/metal oxides, or at least four metals/ metal oxides.
  • mixed metal particles and mixed metal oxide particles include one or more of the following: aluminum-magnesium, aluminum-iron, aluminum-zinc, zinc-magnesium, zinc-magnesium-iron, calcium-magnesium, calcium- magnesium-zinc, calcium-magnesium-iron, nickel-magnesium, aluminum-nickel, nickel-magnesium-aluminum, aluminum-cerium, aluminum-magnesium oxides, aluminum-iron oxides, aluminum-zinc oxides, zinc-magnesium oxides, zinc- magnesium-iron oxides, calcium-magnesium oxides, calcium-magnesium-zinc oxides, calcium-magnesium-iron oxides, nickel-magnesium oxides, aluminum- nickel oxides, nickel-magnesium-aluminum oxides, aluminum-cerium oxides, and the like.
  • metal oxides can be made by converting a metal salt to its corresponding metal or metal oxide by methods known in the art. The conversion can take place in an inert atmosphere or in air via heating, such as calcining in an inert or atmospheric environment or heating in solution.
  • a metal salt is dissolved in a liquid and subjected to ultrasound irradiation followed by its conversion to metal or metal oxide.
  • Metal salts include metal carboxylates, metal halides, and metal acetylacetonates. That is, metal carboxylates, metal halides, and metal acetylacetonates may be used to make metal oxides.
  • Metal carboxylates include metal acetates, metal ethylhexanoates, metal gluconates, metal oxalates, metal propionates, metal pantothenates, metal cyclohexanebutyrates, metal bis(ammonium lacto)dihydroxides, metal citrates, and metal methacrylates.
  • metal carboxylates include aluminum lactate, calcium acetate, calcium ethylhexanoate, calcium gluconate, calcium oxalate, calcium propionate, calcium pantothenate, calcium cyclohexanebutyrate, cerium acetate, cerium oxalate, cesium acetate, cesium formate, iron acetate, iron citrate, iron oxalate, magnesium acetate, magnesium methylcarbonate, magnesium gluconate, nickel acetate, nickel ethylhexanoate, nickel octanoate, tin acetate, tin oxalate, titanium bis(ammonium lacto)dihydroxide, zinc acetate, zinc methacrylate, zinc stearate, zinc cyclohexanebutyrate, zirconium acetate, zirconium citrate.
  • Two or more metal salts may be used to form mixed metal oxides.
  • Mixed metal oxides contain at least two different metal oxides.
  • Mixed metal oxides contain at least three different metal oxides.
  • mixed metal oxides contain at least four different metal oxides.
  • Any suitable liquid can be used to convert a metal salt such as a metal carboxylate to a metal oxide.
  • liquids include water and organic solvents such as alcohols, ethers, esters, ketones, alkanes, aromatics, and the like.
  • an absolute alcohol such as absolute ethanol as the liquid, the alcohol complexes with water that may be liberated during the conversion process.
  • the nano-sized metal particles and/or metal oxide particles may contain or have coated thereon one or more surfactants.
  • Surfactants can facilitate one or more of suspending the particles within the fuel composition, preventing agglomeration, promoting compatibility between the particles and liquid fuel, and the like.
  • Any suitable surfactant can be employed including ionic surfactants, anionic surfactants, cationic surfactants, amphoteric surfactants, and nonionic surfactants.
  • anionic (typically based on sulfate, sulfonate or carboxylate anions) surfactants include sodium dodecyl sulfate (SDS), ammonium lauryl sulfate, and other alkyl sulfate salts, sodium laureth sulfate, also known as sodium lauryl ether sulfate (SLES), alkyl benzene sulfonate, soaps, or fatty acid salts (see acid salts).
  • cationic (typically based on quaternary ammonium cations) surfactants include cetyl trimethylammonium bromide (CTAB) a.k.a. hexadecyl trimethyl ammonium bromide, and other alkyltrimethylammonium salts, cetylpyridinium chloride (CPC), polyethoxylated tallow amine (POEA), benzalkonium chloride (BAC), and benzethonium chloride (BZT).
  • CPC cetyl trimethylammonium bromide
  • POEA polyethoxylated tallow amine
  • BAC benzalkonium chloride
  • BZT benzethonium chloride
  • Examples of zwitterionic surfactants or amphoteric surfactants include dodecyl betaine, dodecyl dimethylamine oxide, cocamidopropyl betaine, and coco ampho glycinate.
  • Examples of nonionic surfactants include alkyl poly(ethylene oxide); alkyl polyglucosides, such as octyl glucoside, and decyl maltoside; fatty alcohols such as cetyl alcohol and oleyl alcohol; cocamide MEA, cocamide DEA, and cocamide TEA.
  • the fuel composition contains from about 0.001% to about 1 % by weight of one or more surfactants. In another embodiment, the fuel composition contains from about 0.01 % to about 0.1% by weight of one or more surfactants.
  • the nano-sized metal particles and metal oxide particles can be at least partially suspended, but typically suspended, in a liquid fuel composition in any suitable manner.
  • the relatively small size of the nano-size particles contributes to the inherent ability to remain suspended over a longer period of time compared to relatively larger particles (larger than a micron), even though the density and/or specific gravity of the nano-size particles may be several times greater than the corresponding density and/or specific gravity of the liquid fuel.
  • the longer suspension times mean that the liquid fuel containing the nano-size particles entering the engine over time contains a more uniform and/or consistent dispersion of the nano-size particles.
  • a suspension contains the nano-sized metal particles and/or metal oxide particles and a carrier fluid that is compatible with the fuel.
  • a carrier fluid that is compatible with the fuel.
  • the resulting suspension can be added directly to pump gasoline.
  • another carrier fluid which is more of a cetane enhancer can be employed.
  • the use of one or more suitable surfactants with a carrier fluid that is compatible with the fuel can enhance the suspension of the nanoparticles.
  • the nano-sized metal particles and metal oxide particles can be in dry powder form.
  • the powdered form may be prepared by spray drying a suspension of the nano-sized metal particles and metal oxide particles.
  • An inert gas such as nitrogen can be used to spray dry the particles.
  • the coated powder can then be added to fuel or an engine as a powder or made into a fuel compatible paste.
  • the powder can be directly added into the air intake of an engine instead of adding the powder to the fuel.
  • the uniformity of dispersion and/or duration of suspension can also be established or facilitated by the use of one or more suitable surfactants.
  • surfactants include amphoteric surfactants, ionic surfactants, and non-ionic surfactants. In one embodiment, however, the surfactant does not contain sulfur atoms.
  • the surfactant does not contain halide atoms.
  • the surfactant can be added to the liquid fuel composition before, during, or after the nano-size particles are combined with the fuel.
  • the nano-size particles may be contacted or coated with the surfactant before addition to the fuel.
  • the powdered form can be prepared by spray drying a suspension of the nano-sized metal particles or metal oxide particles containing one or more suitable surfactants. Alternatively, oven drying or vacuum drying may be employed to form the surfactant coated particles. To be safe during spray drying, an inert gas such as nitrogen can be used to spray dry the particles with surfactant. The powder coated with surfactant can then be added to fuel.
  • the uniformity of dispersion and/or duration of suspension can also be established or facilitated by mixing, stirring, blending, shaking, sonicating, or otherwise agitating the liquid fuel composition containing the nano-size particles.
  • the liquid fuel composition contains a suitable amount of at least partially suspended nano-sized metal particles and/or metal oxide particles to catalyze the combustion reaction of fuels.
  • the liquid fuel composition contains a liquid fuel and from about 0.01 ppm to about 500 ppm of suspended nano-sized metal particles and/or metal oxide particles.
  • the liquid fuel composition contains a liquid fuel and from about 0.05 ppm to about 250 ppm of suspended nano-sized metal particles and/or metal oxide particles.
  • the liquid fuel composition contains a liquid fuel and from about 0.1 ppm to about 100 ppm of suspended nano-sized metal particles and/or metal oxide particles. In still yet another embodiment, the liquid fuel composition contains a liquid fuel and from about 1 ppm to about 75 ppm of suspended nano-sized metal particles and/or metal oxide particles.
  • a fuel additive composition provides an efficient means to store and transport the nano-sized metal particles and/or metal oxide particles prior to the addition with a liquid fuel.
  • the fuel additive composition is simply a dry powder coated with one or more suitable surfactants. Or in another embodiment, no surfactant is used.
  • the fuel additive composition is a paste containing from about 10% by weight to about 95% by weight of the nano-sized metal particles and/or metal oxide particles and from about 5% by weight to about 90% by weight of a fuel compatible organic solvent and from about 5% by weight to about 10% by weight of one or more suitable surfactants.
  • the fuel additive composition is a combination of a carrier liquid and the nano-sized metal particles and/or metal oxide particles and one or more suitable surfactants.
  • the fuel composition or fuel additive composition may optionally contain a bicyclic aromatic compound.
  • bicyclic aromatic compounds include naphthalene, substituted naphthalenes, biphenyl compounds, biphenyl compound derivatives, and mixtures thereof.
  • the fuel composition contains from about 0.01 ppm to about 1000 ppm while the fuel additive composition contains from about 0.1% by weight to about 10% by weight of one or more bicyclic aromatic compounds.
  • the fuel composition contains from about 0.1 ppm to about 500 ppm while the fuel additive composition contains from about 0.5% by weight to about 5% by weight of one or more bicyclic aromatic compounds.
  • the nano-sized metal and/or metal oxide particles and the optional bicyclic aromatic compound in the fuel additive composition can be dispersed in a carrier liquid to form a fuel additive composition.
  • a carrier liquid has a flash point of at least 100 0 F and an auto-ignition temperature of at least 400 0 F or is a C1 -C3 alcohol.
  • carrier liquids include one or more of toluene, xylenes, kerosene and C1 -C3 monohydric, dihydric or polyhydric aliphatic alcohols.
  • Examples of aliphatic alcohols include methanol, ethanol, n-propanol, isopropyl alcohol, ethylene glycol, propylene glycol, and the like.
  • the fuel additive composition contains at least 90% by weight of a carrier liquid and no more than 10% by weight of the nano-sized metal and/or metal oxide particles.
  • Some fuels and fuel additives contain relatively large or small quantities of ketones, such as acetone, or ethers, such MTBE.
  • a relatively large or small quantity of a ketone or ether is not necessary in the fuel compositions and fuel additive compositions.
  • a relatively large quantity (more than 5% by volume) of a ketone or ether is not present in the fuel compositions and/or fuel additive compositions because ketones and ethers may decrease the solubility of the nano-sized metal and/or metal oxide particles and undesirably reduce the flash point of the resultant fuel composition.
  • Fuel compositions are made by combining the nano-sized metal and/or metal oxide particles and a liquid fuel.
  • liquid fuels include hydrocarbon fuels such as gasoline, reformulated gasoline, diesel, jet fuel, marine fuel, kerosene, biofuels such as biodiesel, bioalcohols such as bioethanol, and the like.
  • Gasoline contains one or more of the following components that may, by themselves, constitute liquid fuel: straight-run products, reformate, cracked gasoline, high octant stock, isomerate, polymerization stock, alkylate stock, hydrotreated feedstocks, desulfurization feedstocks, alcohol, and the like.
  • the fuel additive composition or the nano-sized metal and/or metal oxide particles coated with or without one or more suitable surfactants is/are added to the liquid fuel in an amount sufficient to provide decrease of at least about 10% in hydrocarbon and/or carbon monoxide emissions from the exhaust system as compared to the corresponding emissions from use of the liquid fuel without inclusion of the nano-sized metal and/or metal oxide particles.
  • the fuel additive composition or the nano-sized metal and/or metal oxide particles coated with or without one or more suitable surfactants is/are added to the liquid fuel in an amount sufficient to provide decrease of at least about 25% in hydrocarbon and/or carbon monoxide and/or nitrogen oxides emissions from the exhaust system as compared to the corresponding emissions from use of the liquid fuel without inclusion of the nano- sized metal and/or metal oxide particles.
  • the fuel additive composition or the nano-sized metal and/or metal oxide particles coated with or without one or more suitable surfactants is/are added to the liquid fuel in an amount sufficient to provide a decrease of at least 5% in the amount of the liquid fuel consumed by the internal combustion engine when compared with the corresponding amount of liquid fuel consumed by the engine when the nano-sized metal and/or metal oxide particles are not included.
  • the fuel additive composition or the nano-sized metal and/or metal oxide particles is/are added to the liquid fuel in an amount sufficient to provide a decrease of at least 10% in the amount of the liquid fuel consumed by the internal combustion engine when compared with the corresponding amount of liquid fuel consumed by the engine when the nano- sized metal and/or metal oxide particles are not included.
  • the quality of a fuel such as gasoline can be determined by octane.
  • Octane is measured relative to a mixture of isooctane (2,2,4-trimethylpentane, an isomer of octane) and n-heptane.
  • an 87-octane gasoline has the same octane rating as a mixture of 87 vol-% isooctane and 13 vol-% n-heptane.
  • a low octane rating is undesirable in a gasoline engine.
  • the most common type of octane rating worldwide is the Research Octane Number (RON).
  • RON is determined by running the fuel through a specific test engine with a variable compression ratio under controlled conditions, and comparing these results with those for mixtures of isooctane and n-heptane.
  • RON can be determined using the procedure set forth in ASTM D 2699, which is hereby incorporated by reference in its entirety.
  • Another type of octane rating, called Motor Octane Number (MON) which is in some instances a better measure of how the fuel behaves when under load.
  • MON testing uses a similar test engine to that used in RON testing, but with a preheated fuel mixture, a higher engine speed, and variable ignition timing to further stress the fuel's knock resistance.
  • Cetane number or CN a measure of the combustion quality of diesel fuel under compression, one measure of fuel quality. CN is actually a measure of a diesel fuel's ignition delay; the time period between the start of injection and start of combustion (ignition) of the fuel.
  • a fuel composition containing a liquid fuel and the nano-sized metal and/or metal oxide particles has a higher RON, MON, and/or CN than a RON, MON, and/or CN for a fuel composition with the same ingredients except without the nano-sized metal and/or metal oxide particles.
  • a fuel composition containing a liquid fuel and the nano- sized metal and/or metal oxide particles can have less than about 5% higher RON, MON, and/or CN than a RON, MON, and/or CN for a fuel composition with the same ingredients except without the nano-sized metal and/or metal oxide particles.
  • a fuel composition containing a liquid fuel and the nano-sized metal and/or metal oxide particles has can have less than 10% higher RON, MON, and/or CN than a RON, MON, and/or CN for a fuel composition with the same ingredients except without the nano-sized metal and/or metal oxide particles.
  • the fuel composition can be effectively used in both fuel-injected and non fuel-injected engines.
  • the fuel composition can be effectively used in two-stroke engines, four-stroke engines, and vehicle engines such as automobile engines, motorcycle engines, jet engines, marine engines, truck/bus engines, and the like.
  • the fuel composition can be effectively used in any type of internal combustion engine including an Otto-cycle engine, a diesel engine, a rotary engine, and a gas turbine engine.
  • the fuel composition can be effectively used in an intermittent internal combustion engine or a continuous internal combustion engine.
  • the fuel composition can supply to the fuel chamber the liquid fuel and the nano-sized metal and/or metal oxide particles as a mixture, or the liquid fuel and the nano-sized metal and/or metal oxide particles can be supplied to the fuel chamber separately.
  • the fuel compositions are tailored to reduce the percentages of hydrocarbons, carbon monoxide, nitrogen oxides, and molecular oxygen in motor vehicle exhaust emissions. Use of the fuel compositions may also result in a desirable increase in the percentage of carbon dioxide in combustion exhaust emissions.
  • the fuel compositions when used to fuel internal combustion engines, lead to efficient operation and the resultant emissions meet or exceed E.P.A. standards.
  • the fuel compositions are also tailored to have more effective combustion thereby reducing little or less deposition of carbon residue in the internal chamber of the combustion engine.
  • Table 1 reports hydrocarbon emissions in parts per million (ppm) from three different engines at idle and at 2000 rpm using a fuel without the nano- sized metal and/or metal oxide particles and a fuel with the nano-sized metal and/or metal oxide particles.
  • the base fuel is regular unleaded gasoline having an octane rating of 87.
  • the nano-sized metal and/or metal oxide particles are present at a level of about 50 ppm and are zinc oxide particles having a size from 1 nm to 20 nm.
  • Engine 1 is a year 2002 Ford F-150 pick-up V-8; engine 2 is a year 2000 Dodge Ram pick-up V-8; and engine 3 is a 1999 Audi A8 V-8.
  • Hydrocarbon emissions are measured using a five gas analyzer with a tailpipe probe (Model 5002 Exhaust Gas Analyzer made by Emission Systems Inc.).
  • Figure 1 is a bar graph for hydrocarbon readings to facilitate visual comparisons of emissions reported in Table 1.
  • the first set of bars (idle w/o cat) shows the hydrocarbon emissions from three engines at idle using a fuel without the nano-sized metal and/or metal oxide particles.
  • the second set of bars (idle w cat) shows hydrocarbon emissions from the same three engines at idle using a fuel with the nano-sized metal and/or metal oxide particles.
  • the final two sets of bars shows the hydrocarbon emissions either without or with the nano-sized metal and/or metal oxide particles from the same three engines, but with the engine turning at 2000 rpm (a typical turn rate for highway travel). For both idle and cruising engine turning rates, the reduction in hydrocarbon emissions is substantial.
  • Table 2 reports nitrogen oxide (NOx) emissions in parts per million (ppm) from two different engines at idle and at 2000 rpm using a fuel without the nano- sized metal and/or metal oxide particles and a fuel with the nano-sized metal and/or metal oxide particles. For both idle and cruising engine turning rates, the reduction in nitrogen oxide emissions is substantial.
  • the base fuel is regular unleaded gasoline having an octane rating of 87.
  • the nano-sized metal and/or metal oxide particles are present at a level of about 50 ppm and are zinc oxide particles having a size from 1 nm to 20 nm.
  • Engine 1 is a year 2002 Ford F-150 pick-up V-8 and engine 3 is a 1999 Audi A8 V-8. Nitrogen oxide emissions are measured using a five gas analyzer with a tailpipe probe (Model 5002 Exhaust Gas Analyzer made by Emission Systems Inc.).
  • Table 3 reports carbon dioxide emissions in parts per million (ppm) from three different engines at idle and at 2000 rpm using a fuel without the nano- sized metal and/or metal oxide particles and a fuel with the nano-sized metal and/or metal oxide particles.
  • the base fuel is regular unleaded gasoline having an octane rating of 87.
  • the nano-sized metal and/or metal oxide particles are present at a level of about 50 ppm and are zinc oxide particles having a size from 1 nm to 20 nm.
  • Engine 1 is a year 2002 Ford F-150 pick-up V-8 and engine 2 is a year 2000 Dodge Ram pick-up V-8.
  • Carbon dioxide emissions are measured using a five gas analyzer with a tailpipe probe (Model 5002 Exhaust Gas Analyzer made by Emission Systems Inc.).
  • Table 4 reports octane ratings from five different fuel compositions; one without the nano-sized metal and/or metal oxide particles additive and four with varying amounts of the nano-sized metal and/or metal oxide particles additive.
  • Each of the five different fuel compositions contains Murphy's USA regular unleaded fuel having an octane rating of 87 with or without an additive.
  • the additive is a different amount of 1 nm to 20 nm zinc oxide particles.
  • the octane number is measured using an IR scanner (Model ZX-101XL portable octane and fuel analyzer made by Zeltex Inc.).
  • Figure 2 is a bar graph for octane readings to facilitate visual comparisons of the fuel compositions reported in Table 4.
  • the first bar shows the octane reading from a fuel composition without the nano-sized metal and/or metal oxide particles while the second to fifth bars show fuel compositions with varying amounts of the nano-sized metal and/or metal oxide particles. All of the fuel compositions with varying amounts of the nano-sized metal and/or metal oxide particles have higher octane readings than the fuel composition without the nano-sized metal and/or metal oxide particles.
  • Table 5 illustrates that NOx emissions from diesel fuel with catalyst were reduced from 125 ppm level to 58 ppm level: approximately a 53% reduction.
  • Each of the two different diesel fuel compositions contains Phillips's USA diesel fuel with or without an additive.
  • the additive is 1 nm to 20 nm zinc oxide particles.
  • Nitrogen oxide emissions are measured using a five gas analyzer with a tailpipe probe (Model 5002 Exhaust Gas Analyzer made by Emission Systems Inc.). TABLE 5 NOx Reduction Test Results using Diesel Fuel with/without catalyst
  • the data were calculated from averaged where multiple readings were taken at two engine speeds: 1) Idle and 2) 2,000 rpm. As shown in Table 5, a two different fuel compositions were used; 1) diesel fuel only and 2) diesel with catalyst. These two fuels were run sequentially with an initial pump diesel base line followed by testing with diesel/catalyst.
  • a figure or a parameter from one range may be combined with another figure or a parameter from a different range for the same characteristic to generate a numerical range.

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  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Inorganic Chemistry (AREA)
  • Liquid Carbonaceous Fuels (AREA)
  • Catalysts (AREA)
  • Oxygen, Ozone, And Oxides In General (AREA)

Abstract

La présente invention concerne une composition de carburant qui contient un carburant liquide et des nanoparticules de métal ou des nanoparticules d'oxyde métallique ou des combinaisons de celles-ci. Les nanoparticules de métal et les nanoparticules d'oxyde métallique peuvent être utilisées soit pour améliorer la combustion, soit pour augmenter l'oxydation chimique catalytique du carburant.
EP08770260A 2007-06-28 2008-06-06 Nanoparticules de métal et d'oxyde métallique pour une combustion du carburant plus complète Withdrawn EP2164932A4 (fr)

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US11/770,281 US20090000186A1 (en) 2007-06-28 2007-06-28 Nano-sized metal and metal oxide particles for more complete fuel combustion
PCT/US2008/066016 WO2009005944A1 (fr) 2007-06-28 2008-06-06 Nanoparticules de métal et d'oxyde métallique pour une combustion du carburant plus complète

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CA2691890A1 (fr) 2009-01-08
KR20090004601A (ko) 2009-01-12
MX2010000215A (es) 2010-07-06

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