Selective adsorbent material and its use
First Claim
1. A process for the selective adsorption of nitrogen compounds and/or sulfur compounds from a hydrocarbon fraction, which comprises contacting said hydrocarbon fraction with an adsorbent comprising a nanostructured JT phase titanium oxide material of the formula TiO2-x, where 0≦
- x≦
1, having an orthorhombic crystalline structure which is thermically stable and with a nanofibrilar and/or nanotubular morphology, constituted by piled structural layers, which are folded or rolled inwards into themselves, or formed from overlapped semitubes.
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Abstract
An adsorbent composition comprising a nanostructured titanium oxide material of the formula TiO2−, where 0≦x≦1 with nanotubular and/or nanofibrilar morphology, high oxygen deficiency, having an orthorhombic JT crystalline phase described by at least one of the space groups 59 Pmmn, 63 Amma, 71 Immm or 63 Bmmb, and comprising between 0 and 20 weight percent of a transition metal oxide is used for the selective adsorption of nitrogen compounds and/or sulfur compounds from light and intermediate petroleum fractions.
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Citations
30 Claims
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1. A process for the selective adsorption of nitrogen compounds and/or sulfur compounds from a hydrocarbon fraction, which comprises contacting said hydrocarbon fraction with an adsorbent comprising a nanostructured JT phase titanium oxide material of the formula TiO2-x, where 0≦
- x≦
1, having an orthorhombic crystalline structure which is thermically stable and with a nanofibrilar and/or nanotubular morphology, constituted by piled structural layers, which are folded or rolled inwards into themselves, or formed from overlapped semitubes. - View Dependent Claims (3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 26, 27, 28, 29, 30)
- x≦
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2. The process of claim 2, wherein said nanostructured titanium oxide material has a unit cell with orthorhombic symmetry, which is described by at least one of the space groups 59 Pmmn, 63 Amma, 71 Immm, or 63 Bmmb.
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15. An adsorbent composition comprising a nanostructured titanium oxide material of the formula TiO2-x, where 0≦
- x≦
1 with nanotubular and/or nanofibrilar morphology, high oxygen deficiency having an orthorhombic JT crystalline phase and between 0 and 20 weight percent of a transition metal oxide, said adsorbent composition being useful for the selective adsorption of nitrogen compounds and/or sulfur compounds from light and intermediate petroleum. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
- x≦
Specification