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AssigneeInstituto Mexicano Del Petroleo
InventorsJose Antonio, Carlos Chavez, Maria Jacome, Fernando Ramirez, Yosadara Morales, Gerardo Torres, Luis Ortiz, Esteban Salinas, Marcelo Cassou
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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. The titanates are submitted to dynamic thermal treatment in an inert, oxidizing or reducing atmosphere to produce the JT phase of the TiO2-x, where 0≦x≦1 with an orthorhombic structure.
A thermally stable nanomaterial of titanium oxide of the formula TiO2-x, where 0≦x≦1, having an orthorhombic crystalline lattice which is described by at least one of the space groups 59 Pmmn, 63 Amma, 71 Immm or 63 Bmmb, and a nanofibrilar and/or nanotubular morphology constituted of piled structural layers, which are folded or rolled inwards into themselves, or formed from overlapped semitubes.
Nanomaterial of hydrogen titanate and/or mixed sodium and hydrogen titanate, having the formula HTiO2 and/or NaxH1-xTiO2, wherein x is from 0 to less than 1, the hydrogen and sodium atoms are in the interlayer regions of the orthorhombic structure and said nanomaterial has nanofibrilar and/or nanotubular morphology constituted of piled structural layers that are folded or rolled inwards into themselves, or formed by overlapped semitubes.
A method for the synthesis of titanium oxide with orthorhombic nanostructure of TiO2-x JT phase, where 0≦x≦1, comprising heating a hydrogen titanate and/or a mixed sodium and hydrogen titanate under dynamic thermal treatment to produce a stable nanomaterial.
Dependencies are inferred from the claim text.