Patents by Inventor José Antonio Toledo Antonio
José Antonio Toledo Antonio 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: 20230347332Abstract: The present invention deals with activation and start-up procedures of catalysts for the deep HDS of middle distillates for producing ultra low sulfur diesel (ULSD), consisting of two in situ activation stages: at stage 1, TGA is applied, and at stage 2, DMDS is used; kerosene is the transport means at these stages, which are carried out under given temperature and pressure conditions, and feedstock and hydrogen flows at established times. After the activation of the catalyst in situ, the stabilization stage takes place under selected temperature and pressure conditions, feedstock and hydrogen flow at established times, with which the stabilization of the highly dispersed metallic sulfides is achieved and, in this way, the activity of the catalysts removing contaminants for the production of ULSD is increased.Type: ApplicationFiled: March 30, 2023Publication date: November 2, 2023Inventors: Gustavo Jesús Marroquín Sánchez, Pedro Martín Vega Merino, Carlos Cureño Rodríguez, Patricia Rayo Mayoral, Salvador Castillo Cervantes, José Antonio Toledo Antonio, Jorge Ancheyta Juárez, Magally Cruz Juárez
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Publication number: 20220056236Abstract: The present invention is related to a catalytic process, which includes catalytic compositions for depolymerisation and deoxygenation of lignin contained in the biomass for obtaining aromatic hydrocarbons. The catalytic composition consists of at least one non-noble element from group VIIIB of the periodic table supported on a mesoporous matrix composed of an inorganic oxide, which can be alumina surface-modified with a second inorganic oxide with the object of inhibiting the interaction between the active component and the support. The process of lignin depolymerisation consists of dissolving lignin in a mixture of protic liquids, reacting it I a reaction system by batch or in continuous flow at inert and/or reducing atmosphere, at a temperature of between 60 to 320° C. and a pressure of from 5 to 90 kg/cm2.Type: ApplicationFiled: November 1, 2021Publication date: February 24, 2022Inventors: Jose Antonio TOLEDO ANTONIO, Maria Antonia CORTES JACOME, Isidro MEJIA CENTENO, Jorge Alberto GARCIA MARTINEZ, Jose ESCOBAR AGUILAR, Esteban LOPEZ SALINAS, Maria de Lourdes Araceli MOSQUEIRA MONDRAGON, Miguel PEREZ LUNA, Carlos ANGELES CHAVEZ, Jaime SANCHEZ VALENTE, Maria de Lourdes Alejandra GUZMAN CASTILLO, Ana Karina MEDINA MENDOZA
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Patent number: 11180628Abstract: The present invention is related to a catalytic process, which includes catalytic compositions for depolymerisation and deoxygenation of lignin contained in the biomass for obtaining aromatic hydrocarbons. The catalytic composition consists of at least one non-noble element from group VIIIB of the periodic table supported on a mesoporous matrix composed of an inorganic oxide, which can be alumina surface-modified with a second inorganic oxide with the object of inhibiting the interaction between the active component and the support. The process of lignin depolymerisation consists of dissolving lignin in a mixture of protic liquids, reacting it|a reaction system by batch or in continuous flow at inert and/or reducing atmosphere, at a temperature of between 60 to 320° C. and a pressure of from 5 to 90 kg/cm2.Type: GrantFiled: December 15, 2017Date of Patent: November 23, 2021Assignee: INSTITUTO MEXICANO DEL PETROLEOInventors: Jose Antonio Toledo Antonio, Maria Antonia Cortes Jacome, Isidro Mejia Centeno, Jorge Alberto Garcia Martinez, Jose Escobar Aguilar, Esteban Lopez Salinas, Maria de Lourdes Araceli Mosqueira Mondragon, Miguel Perez Luna, Carlos Angeles Chavez, Jaime Sanchez Valente, Maria de Lourdes Alejandra Guzman Castillo, Ana Karina Medina Mendoza
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Patent number: 11097255Abstract: The present invention relates to a catalytic formulation used in the hydroprocessing of light and middle oil fractions, preferably in hydrodesulfurization and hydrodenitrogenation reactions to obtain diesel with ultra low sulfur content less than or equal to 15 ppm in weight. The catalytic formulation, object of the present invention, consists of at least one metal of Group VI B and at least one metal of Group VIII B and one element of Group V A of the periodic table deposited on a support based on surface modified alumina with an inorganic oxide of a metal of Group II A, IV A and/or IV B. And containing an impregnated organic compound containing at least one hydroxyl group and at least one carboxyl group and that can contain or not at least one sulfide group in its structure. The catalytic formulation, object of the present invention, allows processing of the oil fractions with initial and final boiling temperatures between 150 and 450° C.Type: GrantFiled: June 17, 2015Date of Patent: August 24, 2021Assignees: INSTITUTO MEXICANO DEL PETROLEO, UNIVERSIDAD NACIONAL AUTONOMA DE MEXICOInventors: Maria Antonia Cortes Jacome, Jose Antonio Toledo Antonio, Jose Escobar Aguilar, Esteban Lopez Salinas, Carlos Angeles Chavez, Enelio Torres Garcia, Jose Gonzalo Hernandez Cortez, Maria de Lourdes Araceli Mosqueira Mondragon, Miguel Perez Luna, Gerardo Ferrat Torres, Jorge Fernando Ramirez Solis, Aida Gutierrez Alejandre
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Publication number: 20180258251Abstract: The present invention is related to a catalytic process, which includes catalytic compositions for depolymerisation and deoxygenation of lignin contained in the biomass for obtaining aromatic hydrocarbons. The catalytic composition consists of at least one non-noble element from group VIIIB of the periodic table supported on a mesoporous matrix composed of an inorganic oxide, which can be alumina surface-modified with a second inorganic oxide with the object of inhibiting the interaction between the active component and the support. The process of lignin depolymerisation consists of dissolving lignin in a mixture of protic liquids, reacting it|a reaction system by batch or in continuous flow at inert and/or reducing atmosphere, at a temperature of between 60 to 320° C. and a pressure of from 5 to 90 kg/cm2.Type: ApplicationFiled: December 15, 2017Publication date: September 13, 2018Inventors: Jose Antonio TOLEDO ANTONIO, Maria Antonia CORTES JACOME, Isidro MEJIA CENTENO, Jorge Alberto GARCIA MARTINEZ, Jose ESCOBAR AGUILAR, Esteban LOPEZ SALINAS, Maria de Lourdes Araceli MOSQUEIRA MONDRAGON, Miguel PEREZ LUNA, Carlos ANGELES CHAVEZ, Jaime SANCHEZ VALENTE, Maria de Lourdes Alejandra GUZMAN CASTILLO, Ana Karina MEDINA MENDOZA
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Patent number: 9776174Abstract: The invention relates to a method of preparing a catalytic composition comprising at least one non-noble metal from group VIII and at least one metal from group VIB of the periodic table. The invention also relates to the catalytic composition thus produced, which has a high specific activity in reactions involving the hydroprocessing of light and intermediate fractions, preferably in reactions involving the hydrotreatment of hydrocarbon streams, including hydrodesulphurisation (HDS), hydrodenitrogenation (HDN) and hydro-dearomatisation (HDA).Type: GrantFiled: December 4, 2014Date of Patent: October 3, 2017Assignee: INSTITUTO MEXICANO DEL PETROLEOInventors: Jose Antonio Toledo Antonio, Miguel Perez Luna, Maria Antonia Cortes Jacome, Jose Escobar Aguilar, Maria de Lourdes Mosqueira Mondragon, Carlos Angeles Chavez, Esteban Lopez Salinas, Victor Perez Moreno, Gerardo Ferrat Torres, Rodolfo Juventino Mora Vallejo, Marcelo Lozada Y Cassou
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Patent number: 9738793Abstract: The present invention relates to the application of polymeric resins and TiO2 doped with polymeric resins as coatings for external metal surfaces for industrial use, mainly by selecting the following metals: stainless steel, carbon steel and copper. Focuses specifically on the synthesis of a polymeric resin waterborne corrosion consisting of nano-structured polymer particles formed with two or more acrylic monomers, vinyl or styrenic a functionalizing agent and a crosslinking agent from 1.0 to 20% wt. each. Doping addition is made of the same polymeric resins, which are incorporated in nanotubes of titanium dioxide in concentrations ranging from 50 to 10,000 ppm. The polymeric resin is water based corrosion synthesized by emulsion polymerization techniques and is during the synthesis process is introduced nanotube loading of titanium dioxide (which are synthesized according to U.S. Pat. No. 7,645,439 B2), which allowing the dispersion in the polymer matrix.Type: GrantFiled: May 19, 2016Date of Patent: August 22, 2017Assignee: INSTITUTO MEXICANO DEL PETROLEOInventors: Rosa del Carmen Montesinos Gomez, Lizbeth Pliego Vences, Nancy Romero Hernandez, Cesar Andres Flores Sandoval, Fernando Alvarez Ramirez, Gerardo Ferrat Torres, Jose Antonio Toledo Antonio, Flavio Salvador Vazquez Moreno
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Publication number: 20160272819Abstract: The present invention relates to the application of polymeric resins and TiO2 doped with polymeric resins as coatings for external metal surfaces for industrial use, mainly by selecting the following metals: stainless steel, carbon steel and copper. Focuses specifically on the synthesis of a polymeric resin waterborne corrosion consisting of nano-structured polymer particles formed with two or more acrylic monomers, vinyl or styrenic a functionalizing agent and a crosslinking agent from 1.0 to 20% wt. each. Doping addition is made of the same polymeric resins, which are incorporated in nanotubes of titanium dioxide in concentrations ranging from 50 to 10,000 ppm. The polymeric resin is water based corrosion synthesized by emulsion polymerization techniques and is during the synthesis process is introduced nanotube loading of titanium dioxide (which are synthesized according to U.S. Pat. No. 7,645,439 B2), which allowing the dispersion in the polymer matrix.Type: ApplicationFiled: May 19, 2016Publication date: September 22, 2016Inventors: Rosa del Carmen MONTESINOS GOMEZ, Lizbeth PLIEGO VENCES, Nancy ROMERO HERNANDEZ, Cesar Andres FLORES SANDOVAL, Fernando ALVAREZ RAMIREZ, Gerardo FERRAT TORRES, Jose Antonio TOLEDO ANTONIO, Flavio Salvador VAZQUEZ MORENO
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Patent number: 9371588Abstract: The present invention relates to the application of polymeric resins and TiO2 doped with polymeric resins as coatings for external metal surfaces for industrial use, by selecting the following metals: stainless steel, carbon steel and copper. Focuses specifically on the synthesis of a polymeric resin waterborne corrosion consisting of nano-structured polymer particles formed with two or more acrylic monomers, vinyl or styrenic a functionalizing agent and a crosslinking agent from 1.0 to 20% w each. Doping addition is made of the same polymeric resins, which are incorporated in nanotubes of titanium dioxide in concentrations ranging from 50 to 10,000 ppm. The polymeric resin is water based corrosion synthesized by emulsion polymerization techniques and is during the synthesis process is introduced nanotube loading of titanium dioxide, which allowing the dispersion in the polymer matrix. Polymer dispersions obtained in this way are used as anti-corrosion coatings 100% water based.Type: GrantFiled: June 20, 2013Date of Patent: June 21, 2016Assignee: INSTITUTO MEXICANO DEL PETROLEOInventors: Rosa del Carmen Montesinos Gomez, Lizbeth Pliego Vences, Nancy Romero Hernandez, Cesar Andres Flores Sandoval, Fernando Alvarez Ramirez, Gerardo Ferrat Torres, Jose Antonio Toledo Antonio, Flavio Salvador Vazquez Moreno
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Publication number: 20160008792Abstract: The present invention relates to a catalytic formulation used in the hydroprocessing of light and middle oil fractions, preferably in hydrodesulfurization and hydrodenitrogenation reactions to obtain diesel with ultra low sulfur content less than or equal to 15 ppm in weight. The catalytic formulation, object of the present invention, consists of at least one metal of Group VI B and at least one metal of Group VIII B and one element of Group V A of the periodic table deposited on a support based on surface modified alumina with an inorganic oxide of a metal of Group II A, IV A and/or IV B. And containing an impregnated organic compound containing at least one hydroxyl group and at least one carboxyl group and that can contain or not at least one sulfide group in its structure. The catalytic formulation, object of the present invention, allows processing of the oil fractions with initial and final boiling temperatures between 150 and 450° C.Type: ApplicationFiled: June 17, 2015Publication date: January 14, 2016Applicants: INSTITUTO MEXICANO DEL PETROLEO, UNIVERSIDAD NACIONAL AUTONOMA DE MEXICOInventors: Maria Antonia CORTES JACOME, Jose Antonio TOLEDO ANTONIO, Jose ESCOBAR AGUILAR, Esteban LOPEZ SALINAS, Carlos ANGELES CHAVEZ, Enelio TORRES GARCIA, Jose Gonzalo HERNANDEZ CORTEZ, Maria de Lourdes Araceli MOSQUEIRA MONDRAGON, Miguel PEREZ LUNA, Gerardo FERRAT TORRES, Jorge Fernando RAMIREZ SOLIS, Aida GUTIERREZ ALEJANDRE
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Publication number: 20150087502Abstract: The invention relates to a method of preparing a catalytic composition comprising at least one non-noble metal from group VIII and at least one metal from group VIB of the periodic table. The invention also relates to the catalytic composition thus produced, which has a high specific activity in reactions involving the hydroprocessing of light and intermediate fractions, preferably in reactions involving the hydrotreatment of hydrocarbon streams, including hydrodesulphurisation (HDS), hydrodenitrogenation (HDN) and hydro-dearomatisation (HDA).Type: ApplicationFiled: December 4, 2014Publication date: March 26, 2015Inventors: Jose Antonio TOLEDO ANTONIO, Miguel PEREZ LUNA, Maria Antonia CORTES JACOME, Jose ESCOBAR AGUILAR, Maria de Lourdes MOSQUEIRA MONDRAGON, Carlos ANGELES CHAVEZ, Esteban LOPEZ SALINAS, Victor PEREZ MORENO, Gerardo FERRAT TORRES, Rodolfo Juventino MORA VALLEJO, Marcelo LOZADA Y CASSOU
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Patent number: 8946110Abstract: The invention relates to a method of preparing a catalytic composition comprising at least one non-noble metal from group VIII and at least one metal from group VIB of the periodic table. The invention also relates to the catalytic composition thus produced, which has a high specific activity in reactions involving the hydroprocessing of light and intermediate fractions, preferably in reactions involving the hydrotreatment of hydrocarbon streams, including hydrodesulphurization (HDS), hydrodenitrogenation (HDN) and hydro-dearomatization (HDA).Type: GrantFiled: August 22, 2006Date of Patent: February 3, 2015Assignee: Instituto Mexicano del PetroleoInventors: José Antonio Toledo Antonio, Miguel Pérez Luna, María Antonia Cortés Jacome, José Escobar Aguilar, María de Lourdes Mosqueira Mondragón, Carlos Angeles Chávez, Esteban López Salinas, Víctor Pérez Moreno, Gerardo Ferrat Torres, Rodolfo Juventino Mora Vallejo, Marcelo Lozada y Cassou
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Patent number: 8658126Abstract: Nanomaterials of the JT phase of the titanium oxide TiO2-x, where 0?x?1 having as a building block a crystalline structure with an orthorhombic symmetry and described by at least one of the space groups 59 Pmmn, 63 Amma, 71 Immm or 63 Bmmb. The nanomaterials are in the form of nanofibers, nanowires, nanorods, nanoscrolls and/or nanotubes and are obtained from a hydrogen titanate and/or a mixed sodium and hydrogen titanate precursor compound that is isostructural to the JT crystalline structure. The titanates are the hydrogenated, the protonated, the hydrated and/or the alkalinized phases of the JT crystalline phase that are obtained from titanium compounds such as titanium oxide with an anatase crystalline structure, amorphous titanium oxide, and titanium oxide with a rutile crystalline structure, and/or directly from the rutile mineral and/or from ilmenite.Type: GrantFiled: June 19, 2012Date of Patent: February 25, 2014Assignee: Instituto Mexicano del PetroleoInventors: Jose Antonio Toledo Antonio, Carlos Angeles Chavez, Maria Antonia Cortes Jacome, Fernando Alvarez Ramirez, Yosadara Ruiz Morales, Gerardo Ferrat Torres, Luis Francisco Flores Ortiz, Esteban Lopez Salinas, Marcelo Lozada y Cassou
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Publication number: 20140039092Abstract: The present invention relates to the application of polymeric resins and TiO2 doped with polymeric resins as coatings for external metal surfaces for industrial use, by selecting the following metals: stainless steel, carbon steel and copper. Focuses specifically on the synthesis of a polymeric resin waterborne corrosion consisting of nano-structured polymer particles formed with two or more acrylic monomers, vinyl or styrenic a functionalizing agent and a crosslinking agent from 1.0 to 20% w each. Doping addition is made of the same polymeric resins, which are incorporated in nanotubes of titanium dioxide in concentrations ranging from 50 to 10,000 ppm. The polymeric resin is water based corrosion synthesized by emulsion polymerization techniques and is during the synthesis process is introduced nanotube loading of titanium dioxide, which allowing the dispersion in the polymer matrix. Polymer dispersions obtained in this way are used as anti-corrosion coatings 100% water based.Type: ApplicationFiled: June 20, 2013Publication date: February 6, 2014Inventors: Rosa del Carmen MONTESINOS GOMEZ, Lizbeth PLIEGO VENCES, Nancy ROMERO HERNANDEZ, Cesar Andres FLORES SANDOVAL, Fernando ALVAREZ RAMIREZ, Gerardo FERRAT TORRES, Jose Antonio TOLEDO ANTONIO, Flavio Salvador VAZQUEZ MORENO
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Publication number: 20120301526Abstract: Nanomaterials of the JT phase of the titanium oxide TiO2-x, where 0?x?1 having as a building block a crystalline structure with an orthorhombic symmetry and described by at least one of the space groups 59 Pmmn, 63 Amma, 71 Immm or 63 Bmmb. The nanomaterials are in the form of nanofibers, nanowires, nanorods, nanoscrolls and/or nanotubes and are obtained from a hydrogen titanate and/or a mixed sodium and hydrogen titanate precursor compound that is isostructural to the JT crystalline structure. The titanates are the hydrogenated, the protonated, the hydrated and/or the alkalinized phases of the JT crystalline phase that are obtained from titanium compounds such as titanium oxide with an anatase crystalline structure, amorphous titanium oxide, and titanium oxide with a rutile crystalline structure, and/or directly from the rutile mineral and/or from ilmenite.Type: ApplicationFiled: June 19, 2012Publication date: November 29, 2012Applicant: INSTITUTO MEXICANO DEL PETROLEOInventors: José Antonio Toledo Antonio, Carlos Angeles Chávez, Maria Antonia Cortés Jacome, Fernando Alvarez RamÍrez, Yosadara Ruiz Morales, Gerardo Ferrat Torres, Luis Francisco Flores Ortiz, Esteban López Salinas, Marcelo Lozada y Cassou
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Patent number: 7981275Abstract: The present invention relates to the novel catalytic composition having a high specific activity in reactions involving hydroprocessing of light and intermediate petroleum fractions, and preferably in hydrodesulphurization and hydrodenitrogenation reactions. The inventive catalyst contains at least one element of a non-noble metal from group VIII, at least one element from group VIB and, optionally, a group one element of the VA group, which are deposited on a novel catalytic support comprising of an inorganic metal oxide from group IVB, consisting of an (1D) one-dimensional nanostructured material having nanofibers and/or nanotube morphology with high specific surface area of between 10 and 500 m2/g.Type: GrantFiled: October 10, 2003Date of Patent: July 19, 2011Assignee: Instituto Mexicano del PetroleoInventors: José Antonio Toledo Antonio, José Escobar Aguilar, María Antonia Cortés Jacome, Maria de Lourdes Mosqueira Mondragon, Víctor Pérez Moreno, Carlos Angeles Chávez, Esteban López Salinas, Marcelo Lozada y Cassou
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Publication number: 20100311576Abstract: Nanomaterials of the JT phase of the titanium oxide TiO2-x, where 0?x?1 having as a building block a crystalline structure with an orthorhombic symmetry and described by at least one of the space groups 59 Pmmn, 63 Amma, 71 Immm or 63 Bmmb. These nanomaterials are in the form of nanofibers, nanowires, nanorods, nanoscrolls and/or nanotubes. The nanomaterials are obtained from a hydrogen titanate and/or a mixed sodium and hydrogen titanate precursor compound that is isostructural to the JT crystalline structure. The titanates are the hydrogenated, the protonated, the hydrated and/or the alkalinized phases of the JT crystalline phase that are obtained from titanium compounds such as titanium oxide with an anatase crystalline structure, amorphous titanium oxide, and titanium oxide with a rutile crystalline structure, and/or directly from the rutile mineral and/or from ilmenite.Type: ApplicationFiled: August 2, 2010Publication date: December 9, 2010Applicant: INSTITUTO MEXICANO DEL PETROLEOInventors: Jose Antonio Toledo Antonio, Carlos Angeles Chavez, Maria Antonia Cortes Jacome, Fernando Alvarez Ramirez, Yosadara Ruiz Morales, Gerardo Ferrat Torres, Luis Francisco Flores Ortiz, Esteban Lopez Salinas, Marcelo Lozada y Cassou
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Patent number: 7799313Abstract: Nanomaterials of the JT phase of the titanium oxide TiO2?x, where 0?x?1 having as a building block a crystalline structure with an orthorhombic symmetry and described by at least one of the space groups 59 Pmmn, 63 Amma, 71 Immm or 63 Bmmb. These nanomaterials are in the form of nanofibers, nanowires, nanorods, nanoscrolls and/or nanotubes. The nanomaterials are obtained from a hydrogen titanate and/or a mixed sodium and hydrogen titanate precursor compound that is isostructural to the JT crystalline structure. The titanates are the hydrogenated, the protonated, the hydrated and/or the alkalinized phases of the JT crystalline phase that are obtained from titanium compounds such as titanium oxide with an anatase crystalline structure, amorphous titanium oxide, and titanium oxide with a rutile crystalline structure, and/or directly from the rutile mineral and/or from ilmenite.Type: GrantFiled: November 23, 2009Date of Patent: September 21, 2010Assignee: Instituto Mexicano del PetroleoInventors: Jose Antonio Toledo Antonio, Carlos Angeles Chavez, Maria Antonia Cortes Jacome, Fernando Alvarez Ramirez, Yosadara Ruiz Morales, Gerardo Ferrat Torres, Luis Francisco Flores Ortiz, Esteban Lopez Salinas, Marcelo Lozada y Cassou
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Publication number: 20100069233Abstract: Nanomaterials of the JT phase of the titanium oxide TiO2-x, where 0?x?1 having as a building block a crystalline structure with an orthorhombic symmetry and described by at least one of the space groups 59 Pmmn, 63 Amma, 71 Immm or 63 Bmmb. These nanomaterials are in the form of nanofibers, nanowires, nanorods, nanoscrolls and/or nanotubes. The nanomaterials are obtained from a hydrogen titanate and/or a mixed sodium and hydrogen titanate precursor compound that is isostructural to the JT crystalline structure. The titanates are the hydrogenated, the protonated, the hydrated and/or the alkalinized phases of the JT crystalline phase that are obtained from titanium compounds such as titanium oxide with an anatase crystalline structure, amorphous titanium oxide, and titanium oxide with a rutile crystalline structure, and/or directly from the rutile mineral and/or from ilmenite.Type: ApplicationFiled: November 23, 2009Publication date: March 18, 2010Applicant: INSTITUTO MEXICANO DEL PETROLEOInventors: Jose Antonio Toledo Antonio, Carlos Angeles Chavez, Maria Antonia Cortes Jacome, Fernando Alvarez Ramirez, Yosadara Ruiz Morales, Gerardo Ferrat Torres, Luis Francisco Flores Ortiz, Esteban Lopez Salinas, Marcelo Lozada y Cassou
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Publication number: 20100038285Abstract: The present invention relates to the novel catalytic composition having a high specific activity in reactions involving hydroprocessing of light and intermediate petroleum fractions, and preferably in hydrodesulphurization and hydrodenitrogenation reactions. The inventive catalyst contains at least one element of a non-noble metal from group VIII, at least one element from group VIB and, optionally, a group one element of the VA group, which are deposited on a novel catalytic support comprising of an inorganic metal oxide from group IVB, consisting of an (ID) one-dimensional nanostructured material having nanofibers and/or nanotube morphology with high specific surface area of between 10 and 500 m2/g.Type: ApplicationFiled: October 10, 2003Publication date: February 18, 2010Inventors: José Antonio Toledo Antonio, José Escobar Aguilar, Maria Antonia Cortés Jacome, Maria de Lourdes Mosqueira Mondragon, Vitor Pérez Moreno, Calos Angeles Chávez, Esteban López Salinas, Marcelo Lozada y Cassou