Ifp Energies Nouvelles

Eni S.p.a.

Aurelie Dandeu

Vincent Coupard

Jean Cosyns

Malika Boualleg

Thierry Chapus

Nathalie Marchal-George

Delphine Bazer-Bachi

Fabrice Diehl

Laurent Bournay

Christine Dalmazzone

Joseph Lopez

Eric Caprani

Damien Douziech

Mehdi Le Moel

Vincent Le Corre

Chloe Bertrand-Drira

Anne Lise Taleb

Charlotte Rouquette

Thomas Regal

Severine Humbert

Fabien Salvatori

Anne-Lise Taleb

A process for preparing a powder support containing alumina and silica or their derivatives for a catalyst of a Fischer-Tropsch type reaction, including stage (a) of preparing a first reactant containing an alumina compound or precursor including a reaction for peptization of an alumina compound or precursor in the presence of an acid, to form solid particles in suspension, stage (b) of preparing a second reactant based on silicic acid and/or on a compound or precursor of silicic acid, including a controlled aging treatment of the silicic acid targeted at its polymerization up to a degree of conversion of the silicic acid of at most 70%, stage (c) of mixing the two reactants in a mixer, and the pH of the first reactant is adjusted to a value not exceeding a given maximum pH threshold.

Method for preparing a catalyst support

A process for the preparation of an alumina in the form of beads with a sulphur content in the range 0.001% to 1% by weight and a sodium content in the range 0.001% to 1% by weight with respect to the total mass of said beads is described, said beads being prepared by shaping an alumina gel having a high dispersibility by drop coagulation. The alumina gel is itself prepared using a specific precipitation preparation process in order to obtain at least 40% by weight of alumina with respect to the total quantity of alumina formed at the end of the gel preparation process right from the first precipitation step, the quantity of alumina formed at the end of the first precipitation step possibly even reaching 100%. The invention also concerns the use of alumina beads as a catalyst support in a catalytic reforming process.

Methods for the preparation of alumina beads formed by dewatering a highly dispersible gel

The present invention concerns spheroidal alumina particles characterized by a BET specific surface area in the range 150 to 300 m/g, a mean particle diameter in the range 1.2 to 3 mm and a particle diameter dispersion, expressed as the standard deviation, not exceeding 0.1, a total pore volume, measured by mercury porosimetry, in the range 0.50 to 0.85 mL/g, a degree of macroporosity within a particle of less than 30%, and in which the dispersion of the diameters of the macropores, expressed as the ratio D90/D50, does not exceed 8. The invention also concerns processes for the preparation of said particles as well as catalysts comprising said particles as a support, and their use in catalytic hydrocarbon treatment processes, in particular in a catalytic reforming process.

Spheroidal alumina particles with improved mechanical strength having a macroporous median diameter in the range 0.05 to 30 &#x3bc;m

The invention concerns a process for the pre-treatment of an unrefined vegetable or animal oil, consisting of passing said oil through a reactor comprising at least one fixed bed of at least one adsorbent comprising a porous refractory oxide which is free of catalytic metals, at a temperature in the range 130&#xb0; C. to 320&#xb0; C., at a pressure in the range 0.1 to 7 MPa and with a residence time for said oil on said fixed bed in the range 0.1 to 1 hour. The invention concerns a process for pre-treatment of a semi-refined vegetable or animal oil, integrated upstream of a hydrotreatment step for the production of green gas oil.

Process for converting feeds derived from renewable sources with pre-treatment of feeds by hot dephosphatation

A process in which the paraffinic effluent derived from a Fischer-Tropsch synthesis unit is separated to obtain a heavy C+ fraction, said heavy fraction then being hydrogenated in the presence of a hydrogenation catalyst at a temperature in the rangeC to&#xb0; C, at a total pressure in the rangetoMPa, at an hourly space velocity in the rangeto, and at a hydrogen flow rate corresponding to a hydrogen/hydrocarbons volume ratio in the rangetoNI/I/h, the liquid hydrogenated effluent then being brought into contact with a hydroisomerization/hydrocracking catalyst, with no prior separation step, the hydroisomerized/hydrocracked effluent then being distilled to obtain middle distillates and possibly oil bases.

Process for producing middle distillates by hydroismerizing and hydrocracking a heavy fraction from a fischer-tropsch effluent

The present invention relates to a method of producing alkyl esters and glycerin from a crude or semi-refined vegetable oil and an aliphatic monoalcohol, comprising a deep pretreatment purification stage to eliminate the species based on phosphorus, calcium, magnesium, zinc or iron, insoluble under the temperature conditions of the heterogeneous catalytic reactor.

Method of producing alkyl esters from vegetable or animal oil and an aliphatic monoalcohol with fixed-bed hot purification

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Saint-Just Chaleyssin, France

Aurelie Dandeu