Alkali Metal, Alkaline Earth Metal, Or Magnesium Containing Patents (Class 502/427)
  • Patent number: 9457338
    Abstract: A mesoporous material is derived from a polysaccharide by thermally assisted partial carbonisation after expansion. The polysaccharide is an acid containing polysaccharide or mixture of polysaccharides.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: October 4, 2016
    Assignee: THE UNIVERSITY OF YORK
    Inventors: Robin Jeremy White, James Hanley Clark, Vitaliy L'vovich Budarin, Duncan James MacQuarrie
  • Patent number: 9249166
    Abstract: A hydrothermal synthesis method of making a delaminated titanate is disclosed. The delaminated titanate has a unique structure or morphology. The delaminated titanate is first formed by forming at a low temperature a layered sodium nonatitanate (SNT), which may be referred to as layered sodium titanate. The layered SNT has a unique morphology. The layered SNT is then synthesized into a delaminated titanate having a unique morphology.
    Type: Grant
    Filed: June 24, 2014
    Date of Patent: February 2, 2016
    Assignee: Sandia Corporation
    Inventor: May D. Nyman
  • Patent number: 8999876
    Abstract: Catalyst compositions comprising molybdenum, sulfur and an alkali metal ion supported on a nanofibrous, mesoporous carbon molecular sieve are useful for converting syngas to higher alcohols. The compositions are produced via impregnation and may enhance selectivity to ethanol in particular.
    Type: Grant
    Filed: December 1, 2011
    Date of Patent: April 7, 2015
    Assignee: Georgia Tech Research Corporation
    Inventors: Christopher W. Jones, Pradeep K. Agrawal, Tien Thao Nguyen
  • Patent number: 8993478
    Abstract: The present invention provides a method for producing an activated carbon for an electric double layer capacitor, with which the wettability of a carbon material with an alkali activator is improved, thereby improving contact efficiency between the carbon material and the alkali activator and efficiently promoting reaction between the carbon material, which is a starting material and the activator. The method comprises adjusting a carbon material as it is or after having been calcined to produce a carbon powder having an average particle diameter of 0.5 to 15 ?m, oxidizing the carbon powder to contain 3 percent by mass or more of oxygen, and activating the oxidized product with an alkali activator.
    Type: Grant
    Filed: December 24, 2010
    Date of Patent: March 31, 2015
    Assignee: JX Nippon Oil & Energy Corporation
    Inventors: Masaki Fujii, Noriyuki Kiuchi, Shinya Taguchi, Keizo Ikai
  • Patent number: 8980788
    Abstract: The invention provides a hydrogen storage material comprising a porous carbon material having oxygen-containing functional groups on the surface, and Li bonded to the surface of the porous carbon material. The hydrogen storage material of the invention has more excellent hydrogen storage capacity than the prior art.
    Type: Grant
    Filed: September 14, 2010
    Date of Patent: March 17, 2015
    Assignee: JX Nippon Oil & Energy Corporation
    Inventors: Ai Minoda, Shinji Oshima, Daisuke Watanabe
  • Publication number: 20150041397
    Abstract: Mesoporous activated carbon is disclosed. In at least some embodiments, virgin activated carbon to be processed may be coconut shell-based. The enhanced activated carbon may have a mesopore structure of at least about 10%. The enhanced activated carbon may be produced through a calcium-catalyzed activation process. A chelator may also be used. Catalyzed thermal activation may be carried out until a desired mass loss is achieved.
    Type: Application
    Filed: October 28, 2014
    Publication date: February 12, 2015
    Inventor: Adam M. Redding
  • Patent number: 8927103
    Abstract: A method produces activated carbon, suitable in particular for use in double-layer condensers. The method includes a) producing a mixture of a preferably pulverulent carbon material, a base and a hydrophilic polymer chemically inert to the base, b) pressing the mixture produced in step a) to form a pressing and c) activating the pressed body produced in step b).
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: January 6, 2015
    Assignee: SGL Carbon SE
    Inventors: Thomas Kirschbaum, Astrid Rota
  • Publication number: 20140274659
    Abstract: Adsorbed natural gas (ANG) technology is an energy efficient approach for storing NG at room temperature and low pressure. ANG technology can be applied to several aspects of the NG industry. The usage of an adsorbent material in natural gas storage and transport may provide increased storage density of NG at a given pressure and decreased pressure of gaseous fuel at a given gas density. Such adsorbent materials have been shown to store substantial quantities of natural gas at relatively modest pressures. Because lower-pressure vessels can be far less expensive than comparable sized high-pressure vessels, ANG based storage can be used to lower the cost of storing natural gas in various applications.
    Type: Application
    Filed: March 14, 2014
    Publication date: September 18, 2014
    Applicant: OSCOMP SYSTEMS INC.
    Inventors: Jimmy ROMANOS, Pedro T. SANTOS, Scott RACKEY
  • Patent number: 8809231
    Abstract: A method for activating carbon via alkali activation processes includes the introduction of water vapor during the activation phase to control the formation of highly reactive by-products. The method includes heating the mixture of a carbon-containing first material and a alkali-containing second material, introducing water vapor at a first threshold temperature and stopping water vapor introduction at a second threshold temperature. The activated carbon material is suitable for carbon-based electrodes and for use in high energy density devices.
    Type: Grant
    Filed: September 28, 2011
    Date of Patent: August 19, 2014
    Assignee: Corning Incorporated
    Inventors: Jia Liu, Kamjula Pattabhirami Reddy, Kishor Purushottam Gadkaree
  • Patent number: 8691177
    Abstract: The present invention provides a high surface area porous carbon material and a process for making this material. In particular, the carbon material is derived from biomass and has large mesopore and micropore surfaces that promote improved adsorption of materials and gas storage capabilities.
    Type: Grant
    Filed: October 21, 2011
    Date of Patent: April 8, 2014
    Assignee: The Curators of the University of Missouri
    Inventors: Peter Pfeifer, Galen J. Suppes, Parag Shah, Jacob W. Burress
  • Patent number: 8563467
    Abstract: A method of preparing activated carbon, is disclosed, comprising: exposing carbonaceous material to microwave radiation in the presence of water to produce activated carbon.
    Type: Grant
    Filed: January 18, 2011
    Date of Patent: October 22, 2013
    Assignee: The Governors of the University of Alberta
    Inventors: Zaher Hashisho, Chen Heng
  • Patent number: 8541338
    Abstract: Nanoporous activated carbon material having a high specific capacitance in EDLCs and controlled oxygen content, and methods for making such activated carbon material. Reduction of oxygen content is achieved by (a) curing a carbon precursor/additive mixture in an inert or reducing environment, and/or (b) refining (heating) activated carbon material after synthesis in an inert or reducing environment. The inert or reducing environment used for curing or refining is preferably substantially free of oxygen.
    Type: Grant
    Filed: November 4, 2008
    Date of Patent: September 24, 2013
    Assignee: Corning Incorporated
    Inventors: Kishor Purushottam Gadkaree, Jia Liu
  • Publication number: 20130216831
    Abstract: A method produces activated carbon, suitable in particular for use in double-layer condensers. The method includes a) producing a mixture of a preferably pulverulent carbon material, a base and a hydrophilic polymer chemically inert to the base, b) pressing the mixture produced in step a) to form a pressing and c) activating the pressed body produced in step b).
    Type: Application
    Filed: September 7, 2012
    Publication date: August 22, 2013
    Applicant: SGL CARBON SE
    Inventors: Thomas KIRSCHBAUM, Astrid ROTA
  • Patent number: 8513159
    Abstract: A process of manufacturing powdered coffee carbons from spent coffee grounds includes: washing spent coffee grounds, dehydrating same, and conveying same to a pre-carbonation oven for drying and pre-carbonization; removing the pre-carbonized spent coffee grounds, soaking same in a solution mixed with a predetermined quantity of sodium carbonate for a predetermined period of time for grease removal, and washing the grease free spent coffee grounds; pouring the pre-carbonized spent coffee grounds into a post-carbonization oven and heating same to the range of 600 to 650° C. to carbonize the pre-carbonized spent coffee grounds so that the carbonized spent coffee grounds have a porous structure; supplying saturated steam between 850 and 950° C. to the carbonized spent coffee carbons for activation; and operating a wet grinder to grind the activated spent coffee carbons until powdered coffee carbons having a size between 0.1 and 20 ?m are obtained.
    Type: Grant
    Filed: March 19, 2010
    Date of Patent: August 20, 2013
    Inventors: Jen-Huan Lu, Wang-Hsing Lee
  • Patent number: 8501142
    Abstract: This disclosure relates to carbonizing and activating carbonaceous material.
    Type: Grant
    Filed: October 4, 2007
    Date of Patent: August 6, 2013
    Assignee: British American Tobacco (Investments) Limited
    Inventors: Stephen Robert Tennison, Jonathan Robert Tunbridge, Roger Nicholas Place, Andrew John Blackburn, Alan Mark Giles
  • Patent number: 8492307
    Abstract: A substantially homogeneous composite for making a carbon material includes a carbon precursor and an activation agent that is soluble in a solution including the carbon precursor. An amount of the activation agent used is sufficient to form the carbon material having at least 90% of a total pore volume of the carbon material composed of micropores, and 10% or less of the total pore volume composed of mesopores and macropores.
    Type: Grant
    Filed: April 4, 2011
    Date of Patent: July 23, 2013
    Assignee: GM Global Technology Operations LLC
    Inventors: Gregory P. Meisner, Qingyuan Hu
  • Patent number: 8383006
    Abstract: Improved polisiloxane composite barrier to control, preventing the ingress, limiting the level of H2O within devices sensitive to its presence, method for its production, sensitive devices employing such barriers for the control of the H2O level within.
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: February 26, 2013
    Assignee: SAES Getters S.p.A.
    Inventors: Paolo Vacca, Antonio Bonucci, Sergio Rondena, Roberto Macchi
  • Patent number: 8313543
    Abstract: Compositions, and processes utilizing such compositions, are provided for reducing mercury emissions during fuel combustion Such compositions comprise a sorbent, a bromine source and a chlorine source Such compositions exhibit improved thermal stability as compared to that of the sorbent by itself.
    Type: Grant
    Filed: September 24, 2009
    Date of Patent: November 20, 2012
    Assignee: Albemarle Corporation
    Inventor: Christopher J. Nalepa
  • Patent number: 8273683
    Abstract: The present invention relates to an active carbon containing an alkaline earth metal compound inside the particle and having a specific surface area of 10 to 2,000 m2/g, which is suitable to be used for polarizable electrodes in an electric double layer capacitor. The active carbon of the present invention enables to increase the capacitance of an electric double layer capacitor as well as to control the expansion of electrodes. The active carbon of the present invention can be obtained by adding an alkaline earth metal compound to a material such as pitch and performing heat treatment and activation.
    Type: Grant
    Filed: February 18, 2010
    Date of Patent: September 25, 2012
    Assignee: Showa Denko K.K.
    Inventor: Masako Tanaka
  • Patent number: 8252716
    Abstract: A two-cycle thermal process for making porous activated carbon materials involves a first step of heating a mixture of a carbon precursor/chemical additive in a first heating cycle at a first temperature to cause gas liberation and volumetric expansion of the mixture, and heating the carbon material produced in the first step in a second heating cycle at a second temperature to carbonize and activate the carbon precursor. During the second cycle, essentially no gas liberation or volumetric expansion is observed.
    Type: Grant
    Filed: November 4, 2008
    Date of Patent: August 28, 2012
    Assignee: Corning Incorporated
    Inventors: Kishor Purushottam Gadkaree, Jia Liu
  • Patent number: 8236275
    Abstract: Provided is a production process for a carbon material comprising an alkali activation reaction step in which a carbon precursor containing an activator selected from alkali metal compounds is heated under flow of inert gas. The above alkali activation reaction is carried out while allowing carbon dioxide gas to flow into a downstream part of an alkali activation reaction region on the condition that the carbon dioxide gas is not substantially brought into contact with the carbon precursor and the activator. This makes it possible to carry out alkali activation treatment safely and stably and obtain a carbon material useful for producing an electric double layer capacitor electrode having a high electrostatic capacity.
    Type: Grant
    Filed: April 27, 2006
    Date of Patent: August 7, 2012
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Takuo Ohshida, Koichi Kanno
  • Patent number: 8227378
    Abstract: An arsenic sorbent includes monohydrocalcite that has been precipitated by mixing an aqueous solution of a soluble carbonate or a carbonate with an aqueous solution that includes an Mg2+ ion and a Ca2+ ion in a ratio “Mg/Ca” of 0.3 or more, the monohydrocalcite having a molar ratio “Mg/(Ca+Mg)” of 0.1 or less. The arsenic sorbent exhibits a high arsenic sorption ability, and can stably retain a sorbate. A purification method using the same is also disclosed.
    Type: Grant
    Filed: July 28, 2011
    Date of Patent: July 24, 2012
    Assignee: National University Corporation Kanazawa University
    Inventors: Keisuke Fukushi, Minoru Sakai, Takashi Munemoto
  • Patent number: 8110523
    Abstract: Disclosed herein is a method for preparing a dry regenerable sorbent which comprises the steps of obtaining a slurry through formulation, mixing, comminuting and dispersion of the sorbent raw materials, forming the slurry by spray drying to produce sorbent particles, and calcining the sorbent particles. In the step of obtaining a slurry, there is used organic additives (dispersant, a flow control agent, and an organic binder) necessary to obtain a well-dispersed, stable and free-flowing slurry in which the raw materials are present below a sub-micron level (nanosize). The organic additives are removed and decomposed through the calcining. The use of the hydrophilic and high specific surface area support allows the dry regenerable sorbent to have a high reactivity. The solid active component is used instead of a liquid amine used in a conventional wet carbon dioxide capture technology. In addition, the sorbent can be re-used through continuous sorption and regeneration processes.
    Type: Grant
    Filed: November 27, 2007
    Date of Patent: February 7, 2012
    Assignees: Korea Electric Power Corporation, Korea South-East Power Co., Ltd., Korea South Power Co., Ltd., Korea Western Power Co., Ltd., Korea Midland Power Co., Ltd., Korea East-West Power Co., Ltd.
    Inventors: Chong-Kul Ryu, Joong-Beom Lee, Tae-Hyoung Eom, Je-Myung Oh
  • Patent number: 8017550
    Abstract: The present invention provides catalytic adsorbents formed from doping activated carbon with a dispersed halide salt. The catalytic adsorbents provided herein are stable and harmless at room temperature, yet allow for chemical adsorption at elevated temperatures typical of those for flue gas streams. The present invention also provides methods of manufacturing the doped activated carbon adsorbents.
    Type: Grant
    Filed: September 12, 2005
    Date of Patent: September 13, 2011
    Assignee: Praxair Technology, Inc.
    Inventors: Chien-Chung Chao, Steve J. Pontonio
  • Publication number: 20110183841
    Abstract: A method for producing a low oxygen content activated carbon material includes heating a natural, non-lignocellulosic carbon precursor in an inert or reducing atmosphere to form a first carbon material, mixing the first carbon material with an inorganic compound to form an aqueous mixture, heating the aqueous mixture in an inert or reducing atmosphere to incorporate the inorganic compound into the first carbon material, removing the inorganic compound from the first carbon material to produce a second carbon material, and heating the second carbon material in an inert or reducing atmosphere to form the low oxygen content activated carbon material. The activated carbon material is suitable to form improved carbon-based electrodes for use in high energy density devices.
    Type: Application
    Filed: December 16, 2010
    Publication date: July 28, 2011
    Inventors: Kishor Purushottam Gadkaree, Jia Liu
  • Publication number: 20110177940
    Abstract: A substantially homogeneous composite for making a carbon material includes a carbon precursor and an activation agent that is soluble in a solution including the carbon precursor. An amount of the activation agent used is sufficient to form the carbon material having at least 90% of a total pore volume of the carbon material composed of micropores, and 10% or less of the total pore volume composed of mesopores and macropores.
    Type: Application
    Filed: April 4, 2011
    Publication date: July 21, 2011
    Inventors: Gregory P. Meisner, Qingyuan Hu
  • Patent number: 7976808
    Abstract: To provide an agent for removing a halogen series gas and a method for removing a halogen series gas which is excellent in a removing ability of removing the present halogen series gas in a low concentration area, which prevents an adsorbent from generating heat, and which is capable of reducing formation of a solid waste. A method for removing a halogen series gas, which comprises bringing a gas to be treated which contains at least one member selected from the halogen series gas group consisting of F2, Cl2, Br2, I2, and compounds which generate a hydrogen halide or hypohalogeneous acid upon hydrolysis, into contact with a granule comprising, based on the total mass of the granule, from 45 to 99.85 mass % of an alkali metal salt, from 0.1 to 40 mass % of a carbonaceous material, and from more than 0 mass % to 15 mass % of an alkaline earth metal salt, in the presence of water.
    Type: Grant
    Filed: November 19, 2008
    Date of Patent: July 12, 2011
    Assignee: Asahi Glass Company, Limited
    Inventors: Shigeru Sakurai, Hisakazu Arima
  • Patent number: 7964530
    Abstract: An activated carbon having the highest peak D within the range of 1.0 nm to 1.5 nm, in which the peak D is from 0.012 to 0.050 cm3/g and is from 2% to 32% to a total pore volume, in pore size distribution as calculated by BJH method from N2-adsorption isotherm at 77.4 K. An electric double layer capacitor comprising the polarizable electrode which comprises the activated carbon, carbon fiber, carbon black, and binder.
    Type: Grant
    Filed: September 27, 2006
    Date of Patent: June 21, 2011
    Assignee: Showa Denko K.K.
    Inventors: Youichi Nanba, Takashi Mori, Susumu Nakazaki
  • Patent number: 7799733
    Abstract: The present invention provides a process for making activated carbon having BET surface area up to 2000 m2/g with pore diameter in the range 17-21 ? suitable for fabricating fuel cell and ultracapacitor electrode from coconut shell by treating carbon granules obtained from coconut shells with chemical activating agents like zinc chloride or potassium hydroxide at the room temperature range 500-800° C. in a dynamic flow of gases like N2 or CO2 for 6-24 h followed by a specific cooling pattern to room temperature. Use of such activated carbon enables the fabrication of high performance ultracapacitor electrodes in H2SO4 as exemplified by capacitance values like 180 F/g without the use of any normal metal additives such as RuO2 or IrO2.
    Type: Grant
    Filed: March 31, 2004
    Date of Patent: September 21, 2010
    Assignee: Council of Scientific and Industrial Research
    Inventors: Deepali Dattatray Wagh, Girish Vilas Arabale, Mahesh Prakash Kulkarni, Imtiaz Sirajuddin Mulla, Vijayamohanan Kunjukrishanapillai, Subhash Pundalik Vernekar, Ratnesh Kumar Jha, Nalini Edgar Jacob
  • Patent number: 7767622
    Abstract: In automotive exhaust gas catalysts with a metallic honeycomb composed of corrugated and smooth sheet layers, it is known that the heat capacity and thermal conductivity of the honeycomb can be reduced by perforations in the sheet layers. As a result, the honeycomb heats up more rapidly and the catalytic coating applied on the honeycomb reaches its operating temperature more rapidly. A disadvantage here is the reduction in the support surface area by the perforations in the sheet layers. According to the invention, suitable adjustment of the properties of the coating suspension used for the catalytic coating and of the dimensions of the holes relative to one another allows the holes to be filled permanently with catalyst material. The resulting catalyst has, at the same coating concentration as a catalyst with unperforated sheet layers, a significantly reduced heat capacity and thermal conductivity.
    Type: Grant
    Filed: February 7, 2007
    Date of Patent: August 3, 2010
    Assignee: Umicore AG & Co. KG
    Inventor: Juergen Quell
  • Patent number: 7759289
    Abstract: In activated carbon obtained by subjecting a carbonaceous material to an activation treatment, the overall content of alkali metals is set at 100 ppm or less, or the overall content of heavy metals is set at 20 ppm or less and the overall content of alkali metals is set at 200 ppm or less. In cases where such activated carbon is used as a raw material in electronic devices, the formation of dendrites by the reductive deposition of alkali metals or heavy metals tends not to occur, so that problems such as short-circuiting or the like tend not to arise, and a good rate of self-discharge retention is shown.
    Type: Grant
    Filed: July 3, 2003
    Date of Patent: July 20, 2010
    Assignees: Kuraray Chemical Co., Ltd., Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Hideharu Iwasaki, Nozomu Sugo, Mitsunori Hitomi, Shushi Nishimura, Takeshi Fujino, Shigeki Oyama, Yuji Kawabuchi
  • Patent number: 7709415
    Abstract: Activated carbon useful as polarizable electrode material for an electric double-layer capacitor can be obtained by mixing a carbonaceous material and an alkali metal hydroxide while maintaining a solid state, granulating the obtained mixture while maintaining its solid state, dehydrating the obtained granulated substance while maintaining its solid state, and subjecting the granulated dehydration product obtained in the dehydration step to an activation treatment. The preferred pressure of the granulation treatment in the granulation step is 0.01 to 300 Torr, and the preferred temperature of the granulation treatment is 90 to 140° C. The preferred pressure of the dehydration treatment in the dehydration step is 0.01 to 10 Torr, and the preferred temperature of the dehydration treatment is 200 to 400° C.
    Type: Grant
    Filed: April 22, 2003
    Date of Patent: May 4, 2010
    Assignees: Kuraray Chemical Co., Ltd., Honda Giken Kogyo Kabushiki Kaisha
    Inventors: Nozomu Sugo, Hideharu Iwasaki, Takanori Kitamura, Tatsuo Morotomi, Tsuyoshi Kowaka, Teruhiro Okada, Shushi Nishimura, Takeshi Fujino, Shigeki Oyama, Yuji Kawabuchi
  • Patent number: 7691782
    Abstract: The present invention relates to an active carbon containing an alkaline earth metal compound inside the particle and having a specific surface area of 10 to 2,000 m2/g, which is suitable to be used for polarizable electrodes in an electric double layer capacitor. The active carbon of the present invention enables to increase the capacitance of an electric double layer capacitor as well as to control the expansion of electrodes. The active carbon of the present invention can be obtained by adding an alkaline earth metal compound to a material such as pitch and performing heat treatment and activation.
    Type: Grant
    Filed: November 12, 2003
    Date of Patent: April 6, 2010
    Assignee: Showa Denko K.K.
    Inventor: Masako Tanaka
  • Patent number: 7528087
    Abstract: A porous mullite composition is made by Forming a mixture of one or more precursor compounds having the elements present in mullite (e.g., clay, alumina, silica) and a property enhancing compound. The property enhancing compound is a compound having an element selected from the group consisting of Mg, Ca, Fe, Na, K, Ce, Pr, Nd, Sm, Eu, Gd, Th, Dy, Ho, Er, Tm, Yb, Lu, B, Y, Sc, La and combination thereof. The mixture is shaped and to form a porous green shape which is heated under an atmosphere having a fluorine containing gas to a temperature sufficient to form a mullite composition comprised substantially of acicular mullite grains that are essentially chemically bound.
    Type: Grant
    Filed: April 23, 2004
    Date of Patent: May 5, 2009
    Assignee: Dow Global Technologies, Inc.
    Inventors: Chandan Saha, Sharon Allen, Chan Han, Robert T. Nilsson, Arthur R. Prunier, Jr., Aleksander J. Pyzik, Sten A. Wallin, Robin Ziebarth, Timothy J. Gallagher
  • Publication number: 20090080142
    Abstract: An activated carbon having the highest peak D within the range of 1.0 nm to 1.5 nm, in which the peak D is from 0.012 to 0.050 cm3/g and is from 2% to 32% to a total pore volume, in pore size distribution as calculated by BJH method from N2-adsorption isotherm at 77.4 K. An electric double layer capacitor comprising the polarizable electrode which comprises the activated carbon, carbon fiber, carbon black, and binder.
    Type: Application
    Filed: September 27, 2006
    Publication date: March 26, 2009
    Applicant: SHOWA DENKO K.K.
    Inventors: Youichi Nanba, Takashi Mori, Susumu Nakazaki
  • Patent number: 7485594
    Abstract: A porous mullite composition is made by forming a mixture of one or more precursor compounds having the elements present in mullite (e.g., clay, alumina, silica) and a property enhancing compound. The property enhancing compound is a compound having an element selected from the group consisting of Mg, Ca, Fe, Na, K, Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, B, Y, Sc, La and combination thereof. The mixture is shaped and to form a porous green shape which is heated under an atmosphere having a fluorine containing gas to a temperature sufficient to form a mullite composition comprised substantially of acicular mullite grains that are essentially chemically bound.
    Type: Grant
    Filed: May 1, 2007
    Date of Patent: February 3, 2009
    Assignee: Dow Global Technologies, Inc.
    Inventors: Chandan Saha, Sharon Allen, Chan Han, Robert T. Nilsson, Arthur R. Prunier, Jr., Aleksander J. Pyzik, Sten A. Wallin, Robin Ziebarth, Timothy J. Gallagher
  • Publication number: 20080176743
    Abstract: The invention concerns a carbonaceous sorbent in powder or grain form for the dry cleaning of waste gases from thermal processes. The sorbent includes carbon adsorbents from the group of activated carbon and/or brown coal cokes which are modified with sulfur and/or sulfur compounds. The sorbent is distinguished in that the specific surface area of the carbon adsorbents in m2/g in relation to the pore volume of the micropores in cm3/g is between 2400 and 2700.
    Type: Application
    Filed: October 26, 2007
    Publication date: July 24, 2008
    Applicant: RWE POWER AKTIENGESELLSCHAFT
    Inventors: Wolfgang Heschel, Bernd Meyer, Maik Werner, Jurgen Wirling
  • Patent number: 7256157
    Abstract: A carbon material for electric double layer capacitor electrodes which is obtained by a heat treatment and an activation treatment of a material pitch having a softening point in a range of 150 to 350° C., a ratio of amounts by atom of hydrogen to carbon (H/C) in a range of 0.50 to 0.90 and a content of optically anisotropic components of 50% or greater. The material pitch is preferably a synthetic pitch obtained by polymerizing a condensed polycyclic hydrocarbon such as naphthalene, methylnaphthalene, anthracene, phenanthrene, acenaphthene, acenaphthylene and pyrene in the presence of an ultra-strong acid catalyst such as a hydrogen fluoride-boron trifluoride complex. Electric double layer capacitors having a high electrode density and a high electrostatic capacity per unit volume can be constructed using the carbon material.
    Type: Grant
    Filed: November 10, 2003
    Date of Patent: August 14, 2007
    Assignee: Mitsubishi Gas Chemical Company, Inc.
    Inventors: Hirotaka Tsuruya, Koichi Kanno, Hitoshi Sakamoto, Yuzuru Takahashi
  • Patent number: 7232790
    Abstract: A method for producing an activated carbon material, wherein the method comprises a step of thermally treating coal-based pitch at two temperature ranges of 400° C. to 600° C. and 600° C. to 900° C.; and a step of mixing the thus obtained carbonaceous material with an alkali metal compound and effecting activation thereof at 600° C. to 900° C., and an activated carbon material obtained by the method. When the activated carbon material of the present invention is used a polarizable electrode material of an electric double layer capacitor, high capacitance per electrode is attained without application of excessive voltage. By adding fibrous material to a coal-based pitch during activation expansion of an alkali molten liquid can be suppressed and productivity can be drastically improved.
    Type: Grant
    Filed: September 9, 2002
    Date of Patent: June 19, 2007
    Assignee: Showa Denko K.K.
    Inventors: Masako Tanaka, Yasuo Saito
  • Patent number: 7214646
    Abstract: To produce activated carbon for an electrode of an electric double-layer capacitor, the following steps are carried out sequentially: a step of subjecting a massive mesophase pitch to a pulverizing treatment to provide a pulverized powder; a step of subjecting the pulverized powder to an infusibilizing treatment under conditions of a temperature in a range of 300° C. (inclusive) to 450° C. (inclusive) in the atmospheric air current, a step of subjecting the pulverized powder to a carbonizing treatment under conditions of a temperature in a range of 600° C. (inclusive) to 900° C. (inclusive) in an inert gas current to provide a carbonized powder, a step of subjecting the carbonized powder to an alkali activating treatment under conditions of a temperature in a range of 500° C. (inclusive) to 1,000° C. (inclusive) in an inert gas atmosphere, followed by the post treatments, thereby producing alkali-activated carbon, and a step of subjecting the alkali-activated carbon to a pulverizing treatment.
    Type: Grant
    Filed: August 9, 2000
    Date of Patent: May 8, 2007
    Assignees: Honda Giken Kogyo Kabushiki Kaisha, Kuraray Chemical Co., Ltd., Kashima Oil Co., Ltd.
    Inventors: Takeshi Fujino, Shigeki Oyama, Naohiko Oki, Minoru Noguchi, Kenji Sato, Shushi Nishimura, Takashi Maeda, Yuji Kawabuchi, Takahiro Haga
  • Publication number: 20040092394
    Abstract: A carbon material for electric double layer capacitor electrodes which is obtained by a heat treatment and an activation treatment of a material pitch having a softening point in a range of 150 to 350° C., a ratio of amounts by atom of hydrogen to carbon (H/C) in a range of 0.50 to 0.90 and a content of optically anisotropic components of 50% or greater. The material pitch is preferably a synthetic pitch obtained by polymerizing a condensed polycyclic hydrocarbon such as naphthalene, methylnaphthalene, anthracene, phenanthrene, acenaphthene, acenaphthylene and pyrene in the presence of an ultra-strong acid catalyst such as a hydrogen fluoride-boron trifluoride complex. Electric double layer capacitors having a high electrode density and a high electrostatic capacity per unit volume can be constructed using the carbon material.
    Type: Application
    Filed: November 10, 2003
    Publication date: May 13, 2004
    Inventors: Hirotaka Tsuruya, Koichi Kanno, Hitoshi Sakamoto, Yuzuru Takahashi
  • Patent number: 6696384
    Abstract: A new shaped activated carbon and the method of its manufacture are disclosed. The invention resides in the crosslinking of a polymeric cellulose, such as sodium carboxymethylcellulose (CMC), within the carbon bodies after they are shaped, employing the CMC as a binder for the activated carbon. The approach to attain product mechanical strength and water stability by crosslinking rather than high temperature heat treatment is not obvious from the prior art teaching. The crosslinking reaction occurs at temperatures below 270° C. In addition, this new binder technology produces shaped carbon bodies having key properties beyond the best level that has been accomplished with other binders.
    Type: Grant
    Filed: April 11, 2001
    Date of Patent: February 24, 2004
    Assignee: MeadWestvaco Corporation
    Inventors: Peter D. A. McCrae, Tiejun Zhang, David R. B. Walker
  • Patent number: 6599856
    Abstract: A formed activated carbon has a Kiya crushing strength of 1 kg or more and a specific heat of 0.4 J/K·cc or more at 25° C.
    Type: Grant
    Filed: October 20, 2000
    Date of Patent: July 29, 2003
    Assignees: Tennex Corporation, Mitsubishi Chemical Corporation
    Inventors: Masashi Uchino, Eiji Yamada, Hiroshi Yamashita, Kazushi Matsuura, Yoshitaka Takeda, Mitsuo Suzuki
  • Patent number: 6592838
    Abstract: Activated carbon for use in an electric double layer capacitor which has at least activated carbon, electrolyte solution and a separator, the activated carbon having properties of: the total specific surface area of 1000 m2/g or larger; the pore volume distribution of 400 &mgr;l/g or larger for the pores larger than 12 Å and smaller than 40 Å in diameter and of 50 &mgr;l/g or larger for the pores larger than 40 Å in diameter; and the total pore volume of 1000 &mgr;l/g or smaller.
    Type: Grant
    Filed: October 19, 2000
    Date of Patent: July 15, 2003
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Susumu Nomoto, Kaneharu Yoshioka, Eri Hirose
  • Patent number: 6589904
    Abstract: The present invention provides an activated carbon produced by a process, which includes: activating a carbonaceous material, to obtain an activated carbonaceous material; and contacting the activated carbonaceous material with an acid. Another embodiment of the present invention provides an electrode for an electric double-layer capacitor, which includes the above-described activated carbon. Another embodiment of the present invention provides a filter, which includes the above-described activated carbon. Another embodiment of the present invention provides a shaped article, which includes the above-described activated carbon. Another embodiment of the present invention provides a method for producing activated carbon, which includes activating a carbonaceous material, to obtain an activated carbonaceous material; and contacting the activated carbonaceous material with an acid, to obtain the activated carbon.
    Type: Grant
    Filed: November 16, 2000
    Date of Patent: July 8, 2003
    Assignees: Kuraray Co., Ltd., Kuraray Chemical Co., Ltd.
    Inventors: Hideharu Iwasaki, Nozomu Sugo, Shushi Nishimura, Yoshifumi Egawa, Hajime Aoki
  • Patent number: 6471745
    Abstract: Catalytic membranes comprising highly-dispersed, catalytically-active metals in nanoporous carbon membranes and a novel single-phase process to produce the membranes.
    Type: Grant
    Filed: October 26, 1999
    Date of Patent: October 29, 2002
    Assignee: University of Delaware
    Inventors: Henry C. Foley, Michael Strano, Madhav Acharya, Brenda A. Raich
  • Patent number: 6471936
    Abstract: This invention is directed to a method of reversibly storing hydrogen comprising exposing a solid sorbent of metal-doped carbon-based material to a hydrogen atmosphere at a temperature of from about 250 K to about 973 K under ambient or higher pressure. The metal-doped carbon-based material is generally an alkali metal-doped carbon-based material prepared by mixing a carbon material with an alkali metal salt and calcining the mixture under an atmosphere of inert or reductive gas.
    Type: Grant
    Filed: March 2, 2000
    Date of Patent: October 29, 2002
    Assignee: National University of Singapore
    Inventors: Pin Chen, Jianyi Lin, Kuang Lee Tan
  • Patent number: 6472343
    Abstract: A new shaped activated carbon and the method of its manufacture are disclosed. The invention resides in the crosslinking of a polymeric cellulose, such as sodium carboxymethylcellulose (CMC), within the carbon bodies after they are shaped, employing the CMC as a binder for the activated carbon. The approach to attain product mechanical strength and water stability by crosslinking rather than high temperature heat treatment is not obvious from the prior art teaching. The crosslinking reaction occurs at temperatures below 270° C. In addition, this new binder technology produces shaped carbon bodies having key properties beyond the best level that has been accomplished with other binders.
    Type: Grant
    Filed: April 11, 2001
    Date of Patent: October 29, 2002
    Assignee: Westvaco Corporation
    Inventors: Peter D. A. McCrae, Tiejun Zhang, David R. B. Walker
  • Publication number: 20020052293
    Abstract: A carbon material for electric double layer capacitor electrodes which is obtained by a heat treatment and an activation treatment of a material pitch having a softening point in a range of 150 to 350° C., a ratio of amounts by atom of hydrogen to carbon (H/C) in a range of 0.50 to 0.90 and a content of optically anisotropic components of 50% or greater. The material pitch is preferably a synthetic pitch obtained by polymerizing a condensed polycyclic hydrocarbon such as naphthalene, methylnaphthalene, anthracene, phenanthrene, acenaphthene, acenaphthylene and pyrene in the presence of an ultra-strong acid catalyst such as a hydrogen fluoride-boron trifluoride complex. Electric double layer capacitors having a high electrode density and a high electrostatic capacity per unit volume can be constructed using the carbon material.
    Type: Application
    Filed: September 12, 2001
    Publication date: May 2, 2002
    Inventors: Hirotaka Tsuruya, Koichi Kanno, Hitoshi Sakamoto, Yuzuru Takahashi
  • Publication number: 20020048144
    Abstract: An activated carbon which is prepared from granular isotropic pitch.
    Type: Application
    Filed: July 25, 2001
    Publication date: April 25, 2002
    Applicant: Kuraray Co., Ltd. Kurashiki-shi Japan
    Inventors: Nozomu Sugo, Hideharu Iwasaki, Goki Uehara