Patents by Inventor Dan Hâncu
Dan Hâncu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20140378296Abstract: A method of producing a catalyst composition is provided, the method comprising mixing (i) a first component comprising a zeolite, and (ii) a second component comprising a homogeneous solid mixture containing at least one catalytic metal and at least one metal inorganic support, wherein the first component and the second component form an intimate mixture, and wherein the homogeneous solid mixture is produced by mixing a reactive solution comprising a precursor of the metal inorganic support and a templating agent with a precursor of the catalyst metal, and calcining the mixture to form the homogeneous solid mixture. The templating agent affects one or more of pore size, pore distribution, pore spacing, or pore dispersity of the metal inorganic support. The pores of the solid mixture produced after calcination may have an average diameter in a range of about 1 nanometer to about 15 nanometers.Type: ApplicationFiled: June 20, 2014Publication date: December 25, 2014Applicant: General Electric CompanyInventors: Larry Neil Lewis, Donald Wayne Whisenhunt, JR., Dan Hancu, Ashish Balkrishna Mhadeshwar, Benjamin Hale Winkler, Daniel George Norton, Oltea Puica Siclovan, Ming Yin
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Patent number: 8889587Abstract: A catalyst system comprising a first catalytic composition comprising a first catalytic material disposed on a metal inorganic support; wherein the metal inorganic support has pores; and at least one promoting metal. The catalyst system further comprises a second catalytic composition comprising, (i) a zeolite, or (ii) a first catalytic material disposed on a first substrate, the first catalytic material comprising an element selected from the group consisting of tungsten, titanium, and vanadium. The catalyst system may further comprise a third catalytic composition. The catalyst system may further comprise a delivery system configured to deliver a reductant and optionally a co-reductant. A catalyst system comprising a first catalytic composition, the second catalytic composition, and the third catalytic composition is also provided. An exhaust system comprising the catalyst systems described herein is also provided.Type: GrantFiled: January 11, 2013Date of Patent: November 18, 2014Assignee: General Electric CompanyInventors: Larry Neil Lewis, Benjamin Hale Winkler, Dan Hancu, Daniel George Norton, Ashish Balkrishna Mhadeshwar
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Patent number: 8871669Abstract: A catalyst composition is provided comprising a homogeneous solid mixture having ordered directionally aligned tubular meso-channel pores having an average diameter in a range of about 1 nanometer to about 15 nanometers, wherein the homogeneous solid mixture is prepared from a gel formed in the presence of a solvent, modifier, an inorganic salt precursor of a catalytic metal, an inorganic precursor of a metal inorganic network, and a templating agent. The templating agent comprises an octylphenol ethoxylate having a structure [I]: wherein “n” is an integer having a value of about 8 to 20.Type: GrantFiled: May 28, 2010Date of Patent: October 28, 2014Assignee: General Electric CompanyInventors: Larry Neil Lewis, Oltea Puica Siclovan, Dan Hancu, Ashish Balkrishna Mhadeshwar, Ming Yin
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Publication number: 20140294710Abstract: A method of preparing a catalyst composition suitable for removing sulfur from a catalytic reduction system and the catalyst composition prepared by the method are provided. The method of preparation of a catalyst composition, comprises: combining a metal oxide precursor, a catalyst metal precursor and an alkali metal precursor in the presence of a templating agent; hydrolyzing and condensing to form an intermediate product that comprises metal oxide, alkali metal oxide, and catalyst metal; and calcining to form a templated amorphous metal oxide substrate having a plurality of pores wherein the alkali metal oxide and catalyst metal are dispersed in an intermixed form in the metal oxide substrate.Type: ApplicationFiled: June 16, 2014Publication date: October 2, 2014Applicant: General Electric CompanyInventors: Oltea Puica Siclovan, Daniel George Norton, Larry Neil Lewis, Dan Hancu, Xiaoying Bao, Robert Burch, Hardacre Christopher, Chansai Sarayute
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Publication number: 20140199223Abstract: A composition includes a templated metal oxide, at least 3 weight percent of silver, and at least one catalytic metal. A method of making and a method of using are included.Type: ApplicationFiled: January 21, 2014Publication date: July 17, 2014Applicant: GENERAL ELECTRIC COMPANYInventors: Ming Yin, Larry Neil Lewis, Dan Hancu, Oltea Puica Siclovan
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Publication number: 20140199222Abstract: A composition includes a templated metal oxide substrate having a plurality of pores and a catalyst material includes silver. The composition under H2 at 30 degrees Celsius, the composition at a wavelength that is in a range of from about 350 nm to about 500 nm has a VIS-UV absorbance intensity that is at least 20 percent less than a standard silver alumina catalyst (Ag STD). The standard alumina is Norton alumina, and which has the same amount of silver by weight.Type: ApplicationFiled: January 21, 2014Publication date: July 17, 2014Applicant: GENERAL ELECTRIC COMPANYInventors: Larry Neil Lewis, Dan Hancu, Oltea Puica Siclovan, Ming Yin
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Patent number: 8586501Abstract: According to various embodiments, a catalyst composition includes a catalytic metal secured to a porous substrate. The substrate has pores that are templated. The substrate is a product of adding a substrate precursor to a water-in-oil microemulsion including a catalytic metal salt, a solvent, a templating agent, and water.Type: GrantFiled: October 4, 2010Date of Patent: November 19, 2013Assignee: General Electric CompanyInventors: Larry Neil Lewis, Robert Edgar Colborn, Ashish Balkrishna Mhadeshwar, Dan Hancu
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Publication number: 20130303365Abstract: A catalyst system comprising a first catalytic composition comprising a homogeneous solid mixture containing at least one catalytic metal and at least one metal inorganic support. The pores of the solid mixture have an average diameter in a range of about 1 nanometer to about 15 nanometers. The catalytic metal comprises nanocrystals.Type: ApplicationFiled: May 13, 2013Publication date: November 14, 2013Inventors: Ming Yin, Larry Neil Lewis, Oltea Puica Siclovan, Dan Hancu, Benjamin Hale Winkler, Daniel George Norton, Ashish Balkrishna Mhadeshwar
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Patent number: 8530369Abstract: A catalyst composition is provided that includes a catalytic metal secured to a substrate, and the substrate is mesoporous and has pores that are templated. A catalyst composition includes a catalytic metal secured to a mesoporous substrate. The mesoporous substrate is a reaction product of a reactive solution, a solvent, a modifier, and a templating agent. A method includes reacting a reactive solution and a templating agent to form a gel; and calcining the gel to form a substrate having a mesoporous template that is capable to support a catalyst composition.Type: GrantFiled: May 19, 2008Date of Patent: September 10, 2013Assignee: General Electric CompanyInventors: Larry Neil Lewis, Oltea Puica Siclovan, Hrishikesh Keshavan, Dan Hancu, Benjamin Hale Winkler
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Patent number: 8505285Abstract: A catalyst system includes a first catalytic composition and a second catalytic composition. The first catalytic composition includes a homogeneous solid mixture, which includes a first catalytic material disposed on a first substrate. The pores of the solid mixture have an average diameter of greater than about 45 nanometers. The second catalytic composition includes at least one of a zeolite or a second catalytic material disposed on a second substrate. The second catalytic material includes an element selected from the group that includes tungsten, titanium, and vanadium.Type: GrantFiled: October 6, 2010Date of Patent: August 13, 2013Assignee: General Electric CompanyInventors: Benjamin Hale Winkler, Dan Hancu, Daniel George Norton, Ashish Balkrishna Mhadeshwar
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Patent number: 8476187Abstract: The present invention details a process for producing a catalyst powder. The steps of the process include preparing catalyst slurry, drying, pyrolyzing, and calcining the catalyst slurry to obtain a calcined catalyst powder. The catalyst slurry comprises a catalyst, a liquid carrier, a templating agent, and a catalyst substrate. The catalyst slurry is dried to obtain a raw catalyst powder. The raw catalyst powder is heated in a first controlled atmosphere to obtain a pyrolyzed catalyst powder and the pyrolyzed catalyst powder is calcined in a second controlled atmosphere to obtain a calcined catalyst powder. A method of fabricating a catalyst surface and catalytic converter using the prepared catalyst powder is also illustrated.Type: GrantFiled: January 6, 2010Date of Patent: July 2, 2013Assignee: General Electric CompanyInventors: Daniel George Norton, Larry Neil Lewis, Elliott West Shanklin, Frederic Joseph Klug, Venkat Subramaniam Venkataramani, Robert Joseph Lyons, Dan Hancu, Benjamin Hale Winkler, Hrishikesh Keshavan
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Patent number: 8459010Abstract: A catalyst composition is provided that includes a catalytic metal secured to a substrate, and the substrate is mesoporous and has pores that are templated. A catalyst composition includes a catalytic metal secured to a mesoporous substrate. The mesoporous substrate is a reaction product of a reactive solution, a solvent, a modifier, and a templating agent. A method for controlling nitrous oxide emissions including the catalyst composition comprising introducing a regeneration fuel into an exhaust stream upstream relative to the catalyst composition and heating the exhaust stream upstream relative to the catalyst composition. When the regeneration fuel is introduced the air/fuel ratio ? of an air/fuel mixture of a lean burn exhaust is greater than 1.Type: GrantFiled: February 26, 2010Date of Patent: June 11, 2013Assignee: General Electric CompanyInventors: Dan Hancu, Larry Neil Lewis, Benjamin Hale Winkler, Daniel George Norton
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Patent number: 8353155Abstract: A catalyst system comprising a first catalytic composition comprising a first catalytic material disposed on a metal inorganic support; wherein the metal inorganic support has pores; and at least one promoting metal. The catalyst system further comprises a second catalytic composition comprising, (i) a zeolite, or (ii) a first catalytic material disposed on a first substrate, the first catalytic material comprising an element selected from the group consisting of tungsten, titanium, and vanadium. The catalyst system may further comprise a third catalytic composition. The catalyst system may further comprise a delivery system configured to deliver a reductant and optionally a co-reductant. A catalyst system comprising a first catalytic composition, the second catalytic composition, and the third catalytic composition is also provided. An exhaust system comprising the catalyst systems described herein is also provided.Type: GrantFiled: August 31, 2009Date of Patent: January 15, 2013Assignee: General Electric CompanyInventors: Larry Neil Lewis, Benjamin Hale Winkler, Dan Hancu, Daniel George Norton, Ashish Balkrishna Mhadeshwar
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Publication number: 20120329644Abstract: A catalyst composition, a method of preparation of catalyst composition, a catalytic reduction system including the catalyst composition and a system using the catalytic reduction system are provided. The catalyst composition includes a templated amorphous metal oxide substrate, a catalyst material, and a sulfur scavenger material. The catalyst material includes a catalyst metal disposed on the templated metal oxide substrate and the sulfur scavenger includes an alkali metal.Type: ApplicationFiled: June 21, 2011Publication date: December 27, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: Oltea Puica Siclovan, Daniel George Norton, Larry Neil Lewis, Dan Hancu, Xiaoying Bao, Robert Burch, Christopher Hardacre, Sarayute Chansai
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Patent number: 8293197Abstract: A system for reducing nitrogen oxides from an exhaust fluid is provided. The system includes an exhaust source, a hydrocarbon reductant source, a first injector in fluid communication with the hydrocarbon reductant source, where the first injector receives a first hydrocarbon reductant stream from the hydrocarbon reductant source, and expels the first portion of the hydrocarbon reductant stream. The system further includes a first catalyst that receives the exhaust stream and the first hydrocarbon reductant stream, a second injector in fluid communication with the hydrocarbon reductant source, where the second injector receives a second hydrocarbon reductant stream from the hydrocarbon reductant source, and expels the second hydrocarbon reductant stream, and a second catalyst disposed to receive an effluent from the first catalyst and the second portion of the hydrocarbon reductant stream.Type: GrantFiled: October 29, 2010Date of Patent: October 23, 2012Assignee: General Electric CompanyInventors: Benjamin Hale Winkler, Dan Hancu, Ashish Balkrishna Mhadeshwar
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Publication number: 20120216515Abstract: Various methods and systems are provided for an exhaust gas treatment device for an exhaust gas treatment system. In one example, the exhaust gas treatment device includes a primary flow passage through which exhaust gas flows to the exhaust gas treatment device, a first sub-catalyst partially disposed in the primary flow passage splitting the exhaust gas into a first gas flow and a bypass flow, and a second sub-catalyst disposed downstream of the first sub-catalyst in the bypass flow forming a second gas flow, where the second gas flow is different from the first gas flow.Type: ApplicationFiled: February 24, 2011Publication date: August 30, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: Daniel George Norton, Dan Hancu, Benjamin Hale Winkler
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Publication number: 20120171095Abstract: A carbon dioxide absorbent composition is described, including (i) a liquid, nonaqueous silicon-based material, functionalized with one or more groups that either reversibly react with CO2 or have a high-affinity for CO2; and (ii) a hydroxy-containing solvent that is capable of dissolving both the silicon-based material and a reaction product of the silicon-based material and CO2. The absorbent may be utilized in methods to reduce carbon dioxide in an exhaust gas, and finds particular utility in power plants.Type: ApplicationFiled: December 21, 2011Publication date: July 5, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: Michael Joseph O'Brien, Robert James Perry, Tunchiao Hubert Lam, Grigorii Lev Soloveichik, Sergei Kniajanski, Larry Neil Lewis, Malgorzata Iwona Rubinsztajn, Dan Hancu
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Patent number: 8178460Abstract: An exhaust treatment method is provided. Method of increasing activation of NOx reduction catalyst using two or more reductant is discussed. The NOx catalyst is disposed to receive both the exhaust stream and reductant stream. The sensor is disposed to sense a system parameter related to carbon loading of the catalyst and produce a signal corresponding to the system parameter. The controller is disposed to receive the signal and to control dosing of the reductant stream based at least in part on the signal. The method includes sensing a system parameter related to carbon loading of a catalyst, producing a signal corresponding to the system parameter and sending the signal to a controller; and controlling a dosing of a reductant stream based at least in part on the signal.Type: GrantFiled: December 12, 2011Date of Patent: May 15, 2012Assignee: General Electric CompanyInventors: Daniel George Norton, Benjamin Hale Winkler, Ashish Balkrishna Mhadeshwar, Dan Hancu, Stanlee Teresa Buddle
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Publication number: 20120107207Abstract: A system for reducing nitrogen oxides from an exhaust fluid is provided. The system includes an exhaust source, a hydrocarbon reductant source, a first injector in fluid communication with the hydrocarbon reductant source, where the first injector receives a first hydrocarbon reductant stream from the hydrocarbon reductant source, and expels the first portion of the hydrocarbon reductant stream. The system further includes a first catalyst that receives the exhaust stream and the first hydrocarbon reductant stream, a second injector in fluid communication with the hydrocarbon reductant source, where the second injector receives a second hydrocarbon reductant stream from the hydrocarbon reductant source, and expels the second hydrocarbon reductant stream, and a second catalyst disposed to receive an effluent from the first catalyst and the second portion of the hydrocarbon reductant stream.Type: ApplicationFiled: October 29, 2010Publication date: May 3, 2012Applicant: GENERAL ELECTRIC COMPANYInventors: Benjamin Hale Winkler, Dan Hancu, Ashish Balkrishna Mhadeshwar
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Publication number: 20120093703Abstract: A catalyst composition includes a catalytic metal secured to a porous substrate. The substrate has pores that are templated. The catalyst composition is prepared by a process that includes the steps of mixing a catalytic metal salt, a templating agent, and water to form a mixture, adding a substrate precursor to the mixture to form a slurry, and calcining the slurry to form a substrate having a porous template that is capable of supporting the catalyst composition.Type: ApplicationFiled: October 13, 2010Publication date: April 19, 2012Applicant: General Electric CompanyInventors: Larry Neil Lewis, Robert Edgar Colborn, Ashish Balkrishna Mhadeshwar, Dan Hancu