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1. (WO2014207096) METHOD FOR MANUFACTURING SHAPED BETA-SIC MESOPOROUS PRODUCTS AND PRODUCTS OBTAINED BY THIS METHOD
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CLAIMS

1 . Method for manufacturing a β-SiC shaped material, such as a shaped piece, comprising mesopores with a diameter of between 6 nm and 100 nm representing a mesopore volume (determined by mercury intrusion porosimetry) greater than 0.35 cm3/g and preferably greater than 0.40 cm3/g, said method comprising the transformation of a mesoporous carbon preform with at least one silicon source into silicon carbide (β-SiC), said silicon source being able to be incorporated in said preform and/or contributed from outside, said transformation taking place in a non-oxidising atmosphere at a temperature preferably lying between 1 100°C and 1400°C, said carbon preform having mesopores with a diameter of between 6 nm and 100 nm with a mesopore volume greater than 0.35 cm3 per gram of carbon (preferably greater than 0.45 cm3 per gram of carbon, and even more preferentially greater than 0.55 cm3 per gram of carbon).

2. Method according to claim 1 , characterised in that said method comprises the steps of

(a) pyrolysing a mesoporous carbon precursor comprising at least one silicon source for obtaining a mesoporous carbon preform containing silicon;

(b) transforming said mesoporous preform into mesoporous β-SiC by reaction with materials comprising silicon in a non-oxidising atmosphere at a temperature preferably lying between 1 100°C and 1400°C.

3. Method according to claim 2, characterized in that between the pyrolysis step (a) and the transformation step (b) the pyrolyzed material is activated in order to increase the specific mesopore volume per gram of carbon, preferably by steam activation or C02 activation, either non catalytic or catalytic.

4. Method according to any one of claims 1 to 3, characterised in that said mesoporous carbon preform was produced from a mesoporous carbon precursor that is a mesoporous phenolic resin, preferably a phenolic plastic, and even more preferentially selected from the group formed by mesoporous resoles, mesoporous novolaks and mixtures of the two.

5. Method according to any one of claims 1 to 4, characterised in that said silicon source is selected from a group formed by metallic silicon, silica, silicon compounds and mixtures thereof.

6. Method according to any one of claims 1 to 5, characterised in that said silicon source is intimately mixed with said mesoporous carbon precursor.

7. Method according to claim 6, characterised in that a preform is prepared from the mixture between said mesoporous carbon precursor and said silicon source.

8. Method according to any one of claims 2 to 7, characterised in that said silicon source is incorporated in said mesoporous carbon precursor before the shaping leading to said preform.

9. Method according to claim 7 or according to claim 8 dependent on claim 7, characterised in that said preform is obtained by a shaping method selected from the group formed by extrusion, pressing of dough, atomisation, granulation, crushing, powder pressing, emulsion, pouring in moulds, coating, or by a combination of these methods.

10. Method according to claim 7, or according to claim 8 dependent on claim 7, or according to claim 9, characterised in that said mesoporous carbon precursor is, before the shaping leading to said preform, in a crosslinked, partially crosslinked and/or non-crosslinked form.

1 1 . β-SiC shaped material, such as a shaped piece, obtainable by the method according to any one of claims 1 to 10, characterised in that it has mesopores with a diameter of between 6 nm and 100 nm corresponding to a mesopore volume of at least 0.35 cm3/g, preferably at least 0.40 cm3/g and even more preferentially at least 0.45 cm3/g (determined by mercury intrusion porosimetry).

12. Shaped material, such as a shaped piece, according to claim 1 1 , characterised in that it has a mesoporous surface area of at least 20 m2/g, preferably at least 30 m2/g and even more preferentially at least 45 m2/g.

13. Use of a shaped material, such as a shaped piece, according to any one of claims 1 1 to 12 as a catalyst carrier for reactions involving at least one liquid phase.

14. Use according to claim 13, for reactions in an aggressive environment, and in particular for reactions aimed at converting biomass.

15. Use of a shaped material, such as a shaped piece, according to either one of claims 1 1 or 12 as a catalyst carrier for the Fischer-Tropsch reaction.

16. A method of preparing a catalyst precursor comprising the steps of:

- preparing a catalyst support in the form of beta-SiC shaped material according to any of claims 1 to 10; and

- introducing a catalyst precursor compound of an active catalyst component onto and/or into said catalyst support.

17. A catalyst precursor comprising:

- a catalyst support in the form of a beta-SiC shaped material according to claim 1 1 ; and - a catalyst precursor compound of an active catalyst component supported by the catalyst support.

18. A method of preparing a catalyst including the steps of:

- preparing a catalyst precursor using the method of claim 16; and

- reducing the catalyst precursor, thereby activating the catalyst precursor and obtaining the catalyst.

19. A catalyst comprising:

- a catalyst support in the form of a beta-SiC shaped material according to claim 1 1 , and - an active catalyst component supported by the catalyst support.

20. A hydrocarbon synthesis process comprising contacting hydrogen with carbon monoxide at a temperature above 100°C (preferably from 180 to 250°C, and still more preferably from 220 to 230°C) and a pressure of at least 10 bar (preferably from 10 to 70 bar) with catalyst as claimed in claim 19 in order to produce hydrocarbons and optionally oxygenates of hydrocarbons.

21 . The process of claim 20 which includes a hydroprocessing step for converting the hydrocarbons and optionally oxygenates thereof to liquid fuels and/or chemicals.