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- Inventor(s):
- Mark Muldoon, Joan F. Brennecke, Edward J. Maginn, Eric F. V. Scriven, Colin H. McAteer
- Patent Number:
- US 7687513 B2
- Description:
Disclosed herein are aminopyridinium cations and compositions containing these cations. Piperidino pyridinium cations and compositions containing these cations are also described. Ionic compositions, particularly liquid ionic compositions that contain the aminopyridinium cation or piperidino pyridinium cation are also described. Methods of enhancing the thermal stability of a compound, particularly an ionic compound, using the aminopyridinium or piperidino pyridinium cations, are also present…
- Date Issued:
- 2010-03-30
- Record Visibility:
- Public
- Title
- Aminopyridinium ionic liquids
- Description
- Disclosed herein are aminopyridinium cations and compositions containing these cations. Piperidino pyridinium cations and compositions containing these cations are also described. Ionic compositions, particularly liquid ionic compositions that contain the aminopyridinium cation or piperidino pyridinium cation are also described. Methods of enhancing the thermal stability of a compound, particularly an ionic compound, using the aminopyridinium or piperidino pyridinium cations, are also presented. Compositions having an expanded liquidus range of from about -73.degree. C. to about 444.degree. C. are also described. Solvents, heat transfer fluids, and lubricants having improved thermal stability characteristics and an expanded and improved liquidus range are also disclosed.
- Creator
- Mark Muldoon, Joan F. Brennecke, Edward J. Maginn, Eric F. V. Scriven, Colin H. McAteer
- Publisher
- United States Patent and Trademark Office
- Language
- eng
- Rights
- http://creativecommons.org/publicdomain/zero/1.0/
- Resource Type
- Patent
-
- Inventor(s):
- Allen H. Simpson, Slawomir T. Fryska, Mark L. La Forest, Roger L. Klinedinst, Alexander Mukasyan
- Patent Number:
- US 7922845 B2
- Description:
An apparatus for bonding a first carbon composite to a second carbon composite through a reactant layer includes a housing, and a pair of conductive press plates electrically isolated from the housing. The press plates are adapted to position the two parts to be bonded with a reactant layer therebetween. The press plates are subjected to an electrical potential and a clamping force, sufficient to initiate a combustion reaction that creates a molten ceramic to bond together the carbon-carbon c…
- Date Issued:
- 2011-04-12
- Record Visibility:
- Public
- Title
- Apparatus and methods for bonding carbon-carbon composites through a reactant layer
- Description
- An apparatus for bonding a first carbon composite to a second carbon composite through a reactant layer includes a housing, and a pair of conductive press plates electrically isolated from the housing. The press plates are adapted to position the two parts to be bonded with a reactant layer therebetween. The press plates are subjected to an electrical potential and a clamping force, sufficient to initiate a combustion reaction that creates a molten ceramic to bond together the carbon-carbon composites.
- Creator
- Allen H. Simpson, Slawomir T. Fryska, Mark L. La Forest, Roger L. Klinedinst, Alexander Mukasyan
- Publisher
- United States Patent and Trademark Office
- Language
- eng
- Rights
- http://creativecommons.org/publicdomain/zero/1.0/
- Resource Type
- Patent
-
- Inventor(s):
- Eduardo E. Wolf
- Patent Number:
- US 7659227 B2
- Description:
Embodiments of the present invention provide catalysts for production of hydrogen from methanol. In an embodiment, a Cu/Zn catalyst may be promoted by Zr and/or Ce, in addition to, in embodiments, Pd or another noble metal. In an embodiment, a chemical composition may have a Cu/Zn base catalyst with a promoter element of Ce, Zr, and/or Pd or another noble metal. Methods of producing hydrogen using such catalysts are also provided.
- Date Issued:
- 2010-02-09
- Record Visibility:
- Public
- Title
- Catalysts for hydrogen production
- Description
- Embodiments of the present invention provide catalysts for production of hydrogen from methanol. In an embodiment, a Cu/Zn catalyst may be promoted by Zr and/or Ce, in addition to, in embodiments, Pd or another noble metal. In an embodiment, a chemical composition may have a Cu/Zn base catalyst with a promoter element of Ce, Zr, and/or Pd or another noble metal. Methods of producing hydrogen using such catalysts are also provided.
- Creator
- Eduardo E. Wolf
- Publisher
- United States Patent and Trademark Office
- Language
- eng
- Rights
- http://creativecommons.org/publicdomain/zero/1.0/
- Resource Type
- Patent
-
- Inventor(s):
- Joan F. Brennecke, Edward J. Maginn
- Patent Number:
- US 6579343 B2
- Description:
The present invention provides a method for purifying a gas by contacting the gas with a liquid ionic compound. Natural gas may be purified, removing water and carbon dioxide, by contacting the natural gas with a liquid ionic compound.
- Date Issued:
- 2003-06-17
- Record Visibility:
- Public
- Title
- Purification of gas with liquid ionic compounds
- Description
- The present invention provides a method for purifying a gas by contacting the gas with a liquid ionic compound. Natural gas may be purified, removing water and carbon dioxide, by contacting the natural gas with a liquid ionic compound.
- Creator
- Joan F. Brennecke, Edward J. Maginn
- Publisher
- United States Patent and Trademark Office
- Language
- eng
- Rights
- http://creativecommons.org/publicdomain/zero/1.0/
- Resource Type
- Patent
-
- Inventor(s):
- Hsueh-Chia Chang, David T. Leighton
- Patent Number:
- US 6428754 B2
- Description:
An exhaust gas treatment system and method for treating the exhaust gas of an internal combustion engine includes a catalytic converter and a catalytic preheater or igniter upstream of the catalytic converter. A bypass passage extends around the igniter such that during the ignition period about two-thirds of the exhaust gas is bypassed around the igniter and one-third passes through the igniter. The igniter raises the temperature of the exhaust gases passing therethrough to an adiabatic temp…
- Date Issued:
- 2002-08-06
- Record Visibility:
- Public
- Title
- Method and Apparatus for treating exhaust gases
- Description
- An exhaust gas treatment system and method for treating the exhaust gas of an internal combustion engine includes a catalytic converter and a catalytic preheater or igniter upstream of the catalytic converter. A bypass passage extends around the igniter such that during the ignition period about two-thirds of the exhaust gas is bypassed around the igniter and one-third passes through the igniter. The igniter raises the temperature of the exhaust gases passing therethrough to an adiabatic temperature of about 900.degree. K. Accordingly, the flow through the igniter combined with the flow through the bypass passage raises the average temperature of the combined exhaust gases to approximately 700.degree. K., which is sufficient to ignite the catalytic converter at substantially the leading edge thereof. Accordingly, normal convective flow of the exhaust gases through the catalytic converter assists in propagating ignition of the converter. A temperature sensor in the catalytic converter causes a controller to operate a valve to divert substantially all of the exhaust gas flow through the bypass passage after the catalytic converter has ignited.
- Creator
- Hsueh-Chia Chang, David T. Leighton
- Publisher
- United States Patent and Trademark Office
- Language
- eng
- Rights
- http://creativecommons.org/publicdomain/zero/1.0/
- Resource Type
- Patent
-
- Inventor(s):
- Eduardo E. Wolf, Paul McAllister
- Patent Number:
- US 5312679 B2
- Description:
A catalytic carbon formation technique in a carbon fiber substrate is disclosed. The carbon fiber substrate is first impregnated with a catalyst and is thereafter heated in an atmosphere rich in carbon and hydrogen. The catalyst is typically a Group VIII metal and may be selected from the group consisting of iron, nickel and cobalt. An incipient wetness technique for impregnating the substrate is also disclosed. A salt of the catalyst is provided in solution and void volume of the substrate i…
- Date Issued:
- 1994-05-17
- Record Visibility:
- Public
- Title
- Nickel catalyzed carbon infiltration of carbon fiber substrates
- Description
- A catalytic carbon formation technique in a carbon fiber substrate is disclosed. The carbon fiber substrate is first impregnated with a catalyst and is thereafter heated in an atmosphere rich in carbon and hydrogen. The catalyst is typically a Group VIII metal and may be selected from the group consisting of iron, nickel and cobalt. An incipient wetness technique for impregnating the substrate is also disclosed. A salt of the catalyst is provided in solution and void volume of the substrate is determined. The carbon fiber is then impregnated with a volume of the solution which is incrementally less that the determined void volume.
- Creator
- Eduardo E. Wolf, Paul McAllister
- Publisher
- United States Patent and Trademark Office
- Language
- eng
- Rights
- http://creativecommons.org/publicdomain/zero/1.0/
- Resource Type
- Patent
-
- Inventor(s):
- James J. Carberry, Charles Benjamin Alcock
- Patent Number:
- US 5286698 B2
- Description:
Solid oxide solutions of the formula La.sub.1-x Sr.sub.x CrO.sub.3-.differential. have been found to exhibit surprisingly high specific activity as catalysts for oxidation and hydrogenation reactions. The oxide solutions can be utilized in particulate form or applied as films to the surfaces of refractory substrates. The oxide solution catalysts are expected to be a viable alternative to the noble metal catalysts now used commercially for treatment of combustion chamber exhaust gases to reduc…
- Date Issued:
- 1994-02-15
- Record Visibility:
- Public
- Title
- Metal oxide catalysts
- Description
- Solid oxide solutions of the formula La.sub.1-x Sr.sub.x CrO.sub.3-.differential. have been found to exhibit surprisingly high specific activity as catalysts for oxidation and hydrogenation reactions. The oxide solutions can be utilized in particulate form or applied as films to the surfaces of refractory substrates. The oxide solution catalysts are expected to be a viable alternative to the noble metal catalysts now used commercially for treatment of combustion chamber exhaust gases to reduce environmental pollutants.
- Creator
- James J. Carberry, Charles Benjamin Alcock
- Publisher
- United States Patent and Trademark Office
- Language
- eng
- Rights
- http://creativecommons.org/publicdomain/zero/1.0/
- Resource Type
- Patent
-
- Inventor(s):
- Paul J. McGinn, Hongmei An
- Patent Number:
- US 8356475 B2
- Description:
Described is a method of slowly releasing a catalyst for, inter alia, the purpose of soot oxidation in a particulate filter. An example method includes incorporating an alkali metal oxide in a glass. Slow leaching of the alkali from the glass provides a means to gradually deliver the catalyst over extended periods. Additionally, the example method includes increasing the amount of alkaline metal ions that may be leached from the glass.
- Date Issued:
- 2013-01-22
- Record Visibility:
- Public
- Title
- Catalysts with slow, passive release of alkali ions
- Description
- Described is a method of slowly releasing a catalyst for, inter alia, the purpose of soot oxidation in a particulate filter. An example method includes incorporating an alkali metal oxide in a glass. Slow leaching of the alkali from the glass provides a means to gradually deliver the catalyst over extended periods. Additionally, the example method includes increasing the amount of alkaline metal ions that may be leached from the glass.
- Creator
- Paul J. McGinn, Hongmei An
- Publisher
- United States Patent and Trademark Office
- Language
- eng
- Rights
- http://creativecommons.org/publicdomain/zero/1.0/
- Resource Type
- Patent
-
- Inventor(s):
- Murlin T. Howerton
- Patent Number:
- US 2670393 B2
- Description:
This invention relates to a novel method for the production of polyisobutenes, and more particularly to the catalytic polymerization of isobutene to form low molecular weight polyisobutenes.
- Date Issued:
- 1954-02-23
- Record Visibility:
- Public
- Title
- Polymerization of isobutene with anhydrous sulfur trioxide catalyst
- Description
- This invention relates to a novel method for the production of polyisobutenes, and more particularly to the catalytic polymerization of isobutene to form low molecular weight polyisobutenes.
- Creator
- Murlin T. Howerton
- Publisher
- United States Patent and Trademark Office
- Language
- eng
- Rights
- http://creativecommons.org/publicdomain/zero/1.0/
- Resource Type
- Patent
-
- Inventor(s):
- Hsueh-Chia Chang, Shau-Chun Paul Wang, Dmitri Lastochkin, Leslie Yeo, Zachary Gagnon
- Patent Number:
- US 8267914 B1
- Description:
The present invention provides an electrospray device using a high frequency alternating current (AC) above 10 kHz to generate fine micron sized drops. The apparatus generally functions by applying a high frequency alternating current electric field across one or more micro-needles and one or more conducting elements. The present invention may be used to generate aerosol drops for respiratory drug delivery or as a microencapsulation technique for the encapsulation of drugs, DNA, protein, oste…
- Date Issued:
- 2012-09-18
- Record Visibility:
- Public
- Title
- Method and apparatus for AC electrospray
- Description
- The present invention provides an electrospray device using a high frequency alternating current (AC) above 10 kHz to generate fine micron sized drops. The apparatus generally functions by applying a high frequency alternating current electric field across one or more micro-needles and one or more conducting elements. The present invention may be used to generate aerosol drops for respiratory drug delivery or as a microencapsulation technique for the encapsulation of drugs, DNA, protein, osteogenic or dermatological growth factors, bacteria, viruses, immobilized enzyme receptors and fluorescent particles for controlled release drug delivery, tissue or bone engineering, clinical or environmental field testing and as biosensors for clinical or drug monitoring. In addition, the present invention may be used to synthesize biodegradable fibers as bioscaffolds for tissue engineering, surgical sutures or medical gauze that enhance blood coagulation, and further may be encapsulated by other agents.
- Creator
- Hsueh-Chia Chang, Shau-Chun Paul Wang, Dmitri Lastochkin, Leslie Yeo, Zachary Gagnon
- Publisher
- United States Patent and Trademark Office
- Language
- eng
- Rights
- http://creativecommons.org/publicdomain/zero/1.0/
- Resource Type
- Patent
-
- Inventor(s):
- Allen H. Simpson, Mark L. La Forest, Alexander Mukasyan
- Patent Number:
- US 8178212 B2
- Description:
Method for chemical bonding of fiberglass fibers to steel surfaces to prepare the steel for bonding with carbon composite material. This fiber-bonding step greatly increases the strength of the subsequent metal-composite bond. The fiberglass fibers which are chemically bonded to the steel provide a high surface area interface to entangle with carbon fibers in the composite component, and thereby inhibit crack formation on the boundary surface between the steel and composite components when th…
- Date Issued:
- 2012-05-15
- Record Visibility:
- Public
- Title
- Functionally graded high temperature bonding of fiberglass fibers to steel
- Description
- Method for chemical bonding of fiberglass fibers to steel surfaces to prepare the steel for bonding with carbon composite material. This fiber-bonding step greatly increases the strength of the subsequent metal-composite bond. The fiberglass fibers which are chemically bonded to the steel provide a high surface area interface to entangle with carbon fibers in the composite component, and thereby inhibit crack formation on the boundary surface between the steel and composite components when they are bonded together.
- Creator
- Allen H. Simpson, Mark L. La Forest, Alexander Mukasyan
- Publisher
- United States Patent and Trademark Office
- Language
- eng
- Rights
- http://creativecommons.org/publicdomain/zero/1.0/
- Resource Type
- Patent
-
- Inventor(s):
- Allen H. Simpson, Mark L. La Forest, Alexander Mukasyan, Douglas J. Steinke
- Patent Number:
- US 7588179 B2
- Description:
Resin-impregnated carbon fiber composites containing metal inserts. Carbon fibers or a carbon fiber preform are bonded to a metal structural member. Once the carbon fiber-metal bond is established, the fiber-metal assembly or hybrid preform is impregnated with resin, to form an article in which bonding between the metal structural member and the composite remainder of the article is greatly enhanced. In a process embodiment, a metal insert, e.g. a steel insert, is provided in contact with par…
- Date Issued:
- 2009-09-15
- Record Visibility:
- Public
- Title
- Bonding of carbon fibers to metal inserts for use in composites
- Description
- Resin-impregnated carbon fiber composites containing metal inserts. Carbon fibers or a carbon fiber preform are bonded to a metal structural member. Once the carbon fiber-metal bond is established, the fiber-metal assembly or hybrid preform is impregnated with resin, to form an article in which bonding between the metal structural member and the composite remainder of the article is greatly enhanced. In a process embodiment, a metal insert, e.g. a steel insert, is provided in contact with particulate carbide-forming metal, e.g. titanium, and with carbon fiber segments. Then an electric current is passed through the carbide-forming metal particles and carbon fibers to heat them to a temperature above the melting point of the carbide-forming metal. This initiates an exothermic reaction, which forms liquid phase metal carbide. Subsequently the liquid phase metal carbide is cooled and solidified, thereby bonding the carbon fiber segments to the metal insert.
- Creator
- Allen H. Simpson, Mark L. La Forest, Alexander Mukasyan, Douglas J. Steinke
- Publisher
- United States Patent and Trademark Office
- Language
- eng
- Rights
- http://creativecommons.org/publicdomain/zero/1.0/
- Resource Type
- Patent