Patents by Inventor Shakeel Ahmed
Shakeel Ahmed 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: 20150072853Abstract: The catalytic composition for the electrochemical reduction of carbon dioxide is a metal oxide supported by multi-walled carbon nanotubes. The metal oxide may be nickel oxide (NiO) or tin dioxide (SnO2). The metal oxides form 20 wt % of the catalyst. In order to make the catalysts, a metal oxide precursor is first dissolved in deionized water to form a metal oxide precursor solution. The metal oxide precursor solution is then sonicated and the solution is impregnated in a support material composed of multi-walled carbon nanotubes to form a slurry. The slurry is then sonicated to form a homogeneous solid solution. Solids are removed from the homogeneous solid solution and dried in an oven for about 24 hours at a temperature of about 110° C. Drying is then followed by calcination in a tubular furnace under an argon atmosphere for about three hours at a temperature of 450° C.Type: ApplicationFiled: November 12, 2014Publication date: March 12, 2015Inventors: SALEEM UR RAHMAN, SHAKEEL AHMED, MOHAMMAD MOZAHAR HOSSAIN, SHAHID MUHAMMAD BASHIR
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Publication number: 20150013225Abstract: The invention relates to a four-component catalyst and a seven-component catalyst and refractory supports for use in the thermoneutral reforming of petroleum-based liquid hydrocarbon fuels.Type: ApplicationFiled: July 10, 2013Publication date: January 15, 2015Inventors: Fahad Ibrahim AL-MUHAISH, Shakeel AHMED, Roberto Carlos Pontes BITTENCOURT, Mauri Jose Baldini CARDOSO, Vivian Passos de SOUZA
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Patent number: 8927451Abstract: Compositions and processes for their use as additives for reducing the sulfur content of FCC gasoline employ a support material montmorillonite clay material. A fluid catalytic cracking (FCC) mixture, therefore, is provided comprising an FCC catalyst and separate particles of sulfur reduction additive consisting of porous montmorillonite clay.Type: GrantFiled: December 26, 2013Date of Patent: January 6, 2015Assignees: Saudi Arabian Oil Company, King Fahd University of Pertroleum & MineralsInventors: Abdennour Bourane, Omer Refa Koseoglu, Musaed Salem Al-Ghrami, Christopher F. Dean, Mohammed Abdul Bari Siddiqui, Shakeel Ahmed
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Publication number: 20140336036Abstract: The electrocatalyst for the electrochemical conversion of carbon dioxide includes a copper material supported on titania nanotubes. The copper material may be pure copper, copper and ruthenium, or copper and iron supported on the titania nanotubes. The electrocatalyst is prepared by first dissolving copper nitrate trihydrate in deionized water to form a salt solution. Titania nanotubes are then added to the salt solution to form a suspension, which is then heated. A urea solution is added to the suspension to form the electrocatalyst in solution. The electrocatalyst is then removed from the solution. In addition to dissolving the copper nitrate trihydrate in the volume of deionized water, either iron nitrate monohydrate or ruthenium chloride may also be dissolved in the deionized water to form the salt solution.Type: ApplicationFiled: July 24, 2014Publication date: November 13, 2014Inventors: SALEEM UR RAHMAN, SYED MOHAMMED JAVAID ZAIDI, SHAKEEL AHMED, SK SAFDAR HOSSAIN
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Publication number: 20140336037Abstract: An electrocatalyst for the electrochemical conversion of carbon dioxide to hydrocarbons is provided. The electrocatalyst for the electrochemical conversion of carbon dioxide includes copper material supported on carbon nanotubes. The copper material may be pure copper, copper and ruthenium, copper and iron, or copper and palladium supported on the carbon nanotubes. The electrocatalyst is prepared by dissolving copper nitrate trihydrate in deionized water to form a salt solution. Carbon nanotubes are then added to the salt solution to form a suspension, which is then heated. A urea solution is added to the suspension to form the electrocatalyst in solution. The electrocatalyst is then removed from the solution. In addition to dissolving the copper nitrate trihydrate in the deionized water, either iron nitrate monohydrate, ruthenium chloride or palladium chloride may also be dissolved in the deionized water to form the salt solution.Type: ApplicationFiled: July 25, 2014Publication date: November 13, 2014Inventors: SALEEM UR RAHMAN, SYED MOHAMMED JAVAID ZAIDI, SHAKEEL AHMED, SK SAFDAR HOSSAIN
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Patent number: 8785340Abstract: The catalyst exhibiting hydrogen spillover effect relates to the composition of a catalyst exhibiting hydrogen spillover effect and to a process for preparing the catalyst. The catalyst has a reduced transition base metal of Group VIB or Group VIIIB, such as cobalt, nickel, molybdenum or tungsten, supported on a high porous carrier, such as saponite, the base metal being ion-exchanged with at least one precious metal of Group VIIIB. The process includes the steps of loading the base metal onto the support, reducing the base metal, preferably with H2 at 600° C., and thereafter ion-exchanging the precious metal with the base metal. Preferred examples of the catalyst include a saponite support loaded with about 10-20 wt % cobalt and about 0.1-1 wt % precious metal. The catalyst is optimized for reactions that occur in commercial processes at about 360-400° C., such as in hydrocracking.Type: GrantFiled: October 20, 2011Date of Patent: July 22, 2014Assignee: King Fahd University of Petroleum and MineralsInventors: Takuma Kimura, Mohammad Abdullah Al-Saleh, Halim Hamid Redhwi, Mohammad Ashraf Ali, Shakeel Ahmed, Masayuki Inui
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Patent number: 8778829Abstract: The active methanol electro-oxidation catalysts include nano-oxides of transition metals (i.e., iron, cobalt and nickel) and platinum-ruthenium alloy nano-particles. The nano-oxides of the transition metals are dispersed during synthesis of a support material, such as mesoporous carbon. The catalyst includes a support material formed from mesoporous carbon, a nano-oxide of a transition metal dispersed in the support material, and platinum-ruthenium alloy nano-particles supported on the nano-oxide of the transition metal, the platinum-ruthenium alloy nano-particles (in a 1:1 molar ratio) forming about 15 wt % of the methanol electro-oxidation catalyst, the transition metals forming about 15 wt % of the methanol electro-oxidation catalyst, and carbon and oxygen forming the balance of about 70 wt % of the methanol electro-oxidation catalyst.Type: GrantFiled: January 3, 2012Date of Patent: July 15, 2014Assignee: King Fahd University of Petroleum and MineralsInventors: Syed Mohammed Javaid Zaidi, Saleem Ur Rahman, Shakeel Ahmed, Mukhtar Bello
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Publication number: 20140174916Abstract: The catalytic composition for the electrochemical reduction of carbon dioxide is a metal oxide supported by multi-walled carbon nanotubes. The metal oxide may be nickel oxide (NiO) or tin dioxide (SnO2). The metal oxides form 20 wt % of the catalyst. In order to make the catalysts, a metal oxide precursor is first dissolved in deionized water to form a metal oxide precursor solution. The metal oxide precursor solution is then sonicated and the solution is impregnated in a support material composed of multi-walled carbon nanotubes to form a slurry. The slurry is then sonicated to form a homogeneous solid solution. Solids are removed from the homogeneous solid solution and dried in an oven for about 24 hours at a temperature of about 110° C. Drying is then followed by calcination in a tubular furnace under an argon atmosphere for about three hours at a temperature of 450° C.Type: ApplicationFiled: December 26, 2012Publication date: June 26, 2014Applicants: KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY, KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: Saleem Ur RAHMAN, Shakeel AHMED, Mohammad Mozahar HOSSAIN, Shahid Muhammad BASHIR
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Patent number: 8759247Abstract: The methanol electro-oxidation catalysts include nano-oxides of rare earth metals (i.e., cesium, praseodymium, neodymium and samarium) and platinum nano-particles. The nano-oxides of the rare earth metals are dispersed during synthesis of a support material, preferably formed from mesoporous carbon. The platinum nano-particles form between about 10 wt % and about 15 wt % of the methanol electro-oxidation catalyst, the rare earth metal forms between about 10 wt % and about 15 wt % of the methanol electro-oxidation catalyst, and carbon and oxygen forming the balance (between about 70 wt % and about 80 wt %) of the methanol electro-oxidation catalyst.Type: GrantFiled: December 27, 2011Date of Patent: June 24, 2014Assignee: King Fahd University of Petroleum and MineralsInventors: Syed Mohammed Javaid Zaidi, Saleem Ur Rahman, Shakeel Ahmed, Mukhtar Bello
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Publication number: 20140106958Abstract: Compositions and processes for their use as additives for reducing the sulfur content of FCC gasoline employ a support material montmorillonite clay material. A fluid catalytic cracking (FCC) mixture, therefore, is provided comprising an FCC catalyst and separate particles of sulfur reduction additive consisting of porous montmorillonite clay.Type: ApplicationFiled: December 26, 2013Publication date: April 17, 2014Applicants: King Fahd University of Petroleum & Minerals, Saudi Arabian Oil CompanyInventors: Abdennour BOURANE, Omer Refa KOSEOGLU, Musaed Salem AL-GHRAMI, Christopher F. DEAN, Mohammed Abdul Bari SIDDIQUI, Shakeel AHMED
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Patent number: 8623781Abstract: The oxidative dehydrogenation of propane provides a highly selective catalyst for the oxidative dehydrogenation of propane to propylene, and a process for preparing the catalyst. The catalyst is a mixed metal oxides catalyst of the general formula MoaVbOx, where the molar ratio of molybdenum to vanadium is between 1:1 and 9:1 (a:b is between 0.5:0.5 and 0.9:0.1) and x is determined according to the oxidation state of the cations present. The catalyst is prepared by mixing the metals by sol-gel technique, heating the gel to dry the mixed oxides, further heating the dried product to induce auto-combustion, washing the product with isopropyl alcohol, and drying with a supercritical CO2 dryer. Oxidative dehydrogenation is carried out by contacting a stream of propane gas with the bulk mixed metal oxides catalyst at a temperature between 350° C. and 550° C. Propylene selectivity of 100% is reached at conversion rates between 1.9% and 4.8%.Type: GrantFiled: June 28, 2011Date of Patent: January 7, 2014Assignee: King Fahd University of Pretroleum and MineralsInventors: Shakeel Ahmed, Hassan S. Alasiri, Faizur Rahman, Adnan M. J. Al-Amer
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Patent number: 8623199Abstract: Compositions and processed for their use as additives for reducing the sulfur content of FCC gasoline employ a support material having deposited on its surface (a) a first metal component from Group IIB of the Periodic Table and (b) a second metal component from Group III or Group IV of the Periodic Table. The additive composition is preferably made of a montmorillonite clay support containing zinc and gallium, zinc and zirconium. Alternatively, the additive composition includes support material having deposited on its surface a metal component from Group III of the Periodic Table, preferably a montmorillonite clay support containing gallium. The clay is impregnated with the metal(s) using the known incipient wetness method and the dried powdered additive composition is preferably formed into shapes suitable for use in the FCC unit.Type: GrantFiled: July 30, 2009Date of Patent: January 7, 2014Assignees: Saudi Arabian Oil Company, King Fahd University of Petroleum & MineralsInventors: Abdennour Bourane, Omer Refa Koseoglu, Musaed Salem Al-Ghrami, Christopher F. Dean, Mohammed Abdul Bari Siddiqui, Shakeel Ahmed
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Patent number: 8609568Abstract: The catalyst for oxidative dehydrogenation of propane to propylene includes vanadium and aluminum incorporated into the framework of a mesoporous support, viz., MCM-41, to form V—Al-MCM-41, and nickel impregnated onto the walls of the mesoporous support. Nickel loading is preferably in the range of 5 to 15% by weight of the catalyst. A process for the production of propylene from propane includes steps of placing the catalyst in a fixed bed reactor, introducing a flow of feedstock in a propane:oxygen:nitrogen ratio of about 6:6:88 by volume, maintaining the reactor at atmospheric pressure and in a temperature range of about 400 to 550° C., collecting the product, and separating propylene from the product. The process achieves propane conversion between about 6 to 22%, and a selectivity for propylene between about 22 and 70%, depending upon percent nickel content and temperature of the reaction.Type: GrantFiled: October 4, 2010Date of Patent: December 17, 2013Assignee: King Fahd University of Petroleum and MineralsInventors: Shakeel Ahmed, Faizur Rahman, Uwais Baduruthamal
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Publication number: 20130256123Abstract: An electrocatalyst for the electrochemical conversion of carbon dioxide to hydrocarbons is provided. The electrocatalyst for the electrochemical conversion of carbon dioxide includes copper material supported on carbon nanotubes. The copper material may be pure copper, copper and ruthenium, copper and iron, or copper and palladium supported on the carbon nanotubes. The electrocatalyst is prepared by dissolving copper nitrate trihydrate in deionized water to form a salt solution. Carbon nanotubes are then added to the salt solution to form a suspension, which is then heated. A urea solution is added to the suspension to form the electrocatalyst in solution. The electrocatalyst is then removed from the solution. In addition to dissolving the copper nitrate trihydrate in the deionized water, either iron nitrate monohydrate, ruthenium chloride or palladium chloride may also be dissolved in the deionized water to form the salt solution.Type: ApplicationFiled: April 2, 2012Publication date: October 3, 2013Applicants: KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY, KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: SALEEM UR RAHMAN, SYED MOHAMMED JAVAID ZAIDI, SHAKEEL AHMED, SK SAFDAR HOSSAIN
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Publication number: 20130256124Abstract: The electrocatalyst for the electrochemical conversion of carbon dioxide includes a copper material supported on titania nanotubes. The copper material may be pure copper, copper and ruthenium, or copper and iron supported on the titania nanotubes. The electrocatalyst is prepared by first dissolving copper nitrate trihydrate in deionized water to form a salt solution. Titania nanotubes are then added to the salt solution to form a suspension, which is then heated. A urea solution is added to the suspension to form the electrocatalyst in solution. The electrocatalyst is then removed from the solution. In addition to dissolving the copper nitrate trihydrate in the volume of deionized water, either iron nitrate to monohydrate or ruthenium chloride may also be dissolved in the deionized water to form the salt solution.Type: ApplicationFiled: April 2, 2012Publication date: October 3, 2013Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: SALEEM UR RAHMAN, SYED MOHAMMED JAVAID ZAIDI, SHAKEEL AHMED, SK SAFDAR HOSSAIN
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Publication number: 20130210613Abstract: The present invention concerns a novel additive composition for reducing sulfur content of a catalytically cracked gasoline fraction. This additive composition comprises a support consisting of porous clay into which a first metal from group IVB is incorporated and a second metal from group IIB is impregnated. Preferably, the first incorporated metal is zirconium and the second impregnated metal is zinc. The sulfur reduction additive is used in the form of a separate particle in combination with a conventional cracking catalyst in a fluidized catalytic cracking process to convert hydrocarbon feed stocks into gasoline having comparatively lower sulfur content and other liquid products.Type: ApplicationFiled: February 7, 2013Publication date: August 15, 2013Applicants: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS, Saudi Arabian Oil CompanyInventors: Christopher F. DEAN, Musaed Salem Musaed Al-Ghrami AL-GHAMDI, Khurshid K. ALAM, Mohammed Abdul Bari SIDDIQUI, Shakeel AHMED
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Publication number: 20130172174Abstract: The active methanol electro-oxidation catalysts include nano-oxides of transition metals (i.e., iron, cobalt and nickel) and platinum-ruthenium alloy nano-particles. The nano-oxides of the transition metals are dispersed during synthesis of a support material, such as mesoporous carbon. The catalyst includes a support material formed from mesoporous carbon, a nano-oxide of a transition metal dispersed in the support material, and platinum-ruthenium alloy nano-particles supported on the nano-oxide of the transition metal, the platinum-ruthenium alloy nano-particles (in a 1:1 molar ratio) forming about 15 wt % of the methanol electro-oxidation catalyst, the transition metals forming about 15 wt % of the methanol electro-oxidation catalyst, and carbon and oxygen forming the balance of about 70 wt % of the methanol electro-oxidation catalyst.Type: ApplicationFiled: January 3, 2012Publication date: July 4, 2013Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: SYED MOHAMMED JAVAID ZAIDI, SALEEM UR RAHMAN, SHAKEEL AHMED, MUKHTAR BELLO
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Publication number: 20130165318Abstract: The methanol electro-oxidation catalysts include nano-oxides of rare earth metals (i.e., cesium, praseodymium, neodymium and samarium) and platinum nano-particles. The nano-oxides of the rare earth metals are dispersed during synthesis of a support material, preferably formed from mesoporous carbon. The platinum nano-particles form between about 10 wt % and about 15 wt % of the methanol electro-oxidation catalyst, the rare earth metal forms between about 10 wt % and about 15 wt % of the methanol electro-oxidation catalyst, and carbon and oxygen forming the balance (between about 70 wt % and about 80 wt %) of the methanol electro-oxidation catalyst.Type: ApplicationFiled: December 27, 2011Publication date: June 27, 2013Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: Syed Mohammed Javaid Zaidi, Saleem Ur Rahman, Shakeel Ahmed, Mukhtar Bello
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Patent number: 8409428Abstract: The present invention concerns a novel additive composition for reducing sulfur content of a catalytically cracked gasoline fraction. This additive composition comprises a support consisting of porous clay into which a first metal from group IVB is incorporated and a second metal from group IIB is impregnated. Preferably, the first incorporated metal is zirconium and the second impregnated metal is zinc. The sulfur reduction additive is used in combination with a conventional cracking catalyst in a fluidized catalytic cracking process to convert hydrocarbon feed stocks into gasoline having comparatively lower sulfur content and other liquid products.Type: GrantFiled: June 28, 2006Date of Patent: April 2, 2013Assignees: Saudi Arabian Oil Company, King Fahd University of Petroleum and MineralsInventors: Christopher F. Dean, Musaed Salem Musaed Al-Ghrami Al-Ghamdi, Khurshid K. Alam, Mohammed Abdul Bari Siddiqui, Shakeel Ahmed
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Publication number: 20130006030Abstract: The oxidative dehydrogenation of propane provides a highly selective catalyst for the oxidative dehydrogenation of propane to propylene, and a process for preparing the catalyst. The catalyst is a mixed metal oxides catalyst of the general formula MoaVbOx, where the molar ratio of molybdenum to vanadium is between 1:1 and 9:1 (a:b is between 0.5:0.5 and 0.9:0.1) and x is determined according to the oxidation state of the cations present. The catalyst is prepared by mixing the metals by sol-gel technique, heating the gel to dry the mixed oxides, further heating the dried product to induce auto-combustion, washing the product with isopropyl alcohol, and drying with a supercritical CO2 dryer. Oxidative dehydrogenation is carried out by contacting a stream of propane gas with the bulk mixed metal oxides catalyst at a temperature between 350° C. and 550° C. Propylene selectivity of 100% is reached at conversion rates between 1.9% and 4.8%.Type: ApplicationFiled: June 28, 2011Publication date: January 3, 2013Applicant: KING FAHD UNIVERSITY OF PETROLEUM AND MINERALSInventors: SHAKEEL AHMED, HASSAN S. ALASIRI, FAIZUR RAHMAN, ADNAN M.J. AL-AMER