Ifp Energies Nouvelles

Gerhard Pirngruber

Philibert Leflaive

Emmanuelle Guillon

Antoine Fecant

Damien Leinekugel Le Cocq

Florent Guillou

Anne-Claire Dubreuil

Karin Barthelet

Joel Patarin

Elsa Jolimaitre

Luc Wolff

Raquel Martinez Franco

Loïc Rouleau

Angélique Simon-Masseron

Gerald Chaplais

Valentin Valtchev

David Peralta

Damien Leinekugel Le Coq

The invention describes a process for the photocatalytic reduction of carbon dioxide carried out in the liquid phase and/or in the gas phase under irradiation employing a photocatalyst of microporous crystalline metal sulfide type, said process being carried out by bringing a charge containing the COand at least one sacrificial compound into contact with said photocatalyst, then by irradiating the photocatalyst by at least one irradiation source producing at least one wavelength lower than the bandgap width of said photocatalyst, so as to reduce the COand to oxidize the sacrificial compound, so as to produce an effluent containing, at least in part, Cor more carbon-based molecules other than CO.

Method for the photocatalytic reduction of COusing a microporous crystalline metal sulfide photocatalyst

The present invention is based on the use of a two-step hydrocracking process comprising a step of hydrogenation placed upstream of the second hydrocracking step, the hydrogenation step treating the unconverted liquid fraction separated in the distillation step in the presence of a specific hydrogenation catalyst. Furthermore, the hydrogenation step and second hydrocracking step are carried out under specific operating conditions and in particular under very specific temperature conditions.

Two-stage hydrocracking process comprising a hydrogenation stage upstream of the second hydrocracking stage, for the production of middle distillates

A novel crystalline hybrid solid with a mixed organic-inorganic matrix is described which has a three-dimensional structure containing an inorganic framework with metallic centers based on zinc connected together via deprotonated organic ligands constituted by the entity &#x2014;OC&#x2014;CH&#x2014;(O)&#x2014;CO. This novel solid is termed IM-21 and has an X-ray diffraction diagram as given below.

IM-21 organic-inorganic hybrid solid and process for preparing same

The present invention relates to a method of producing hydrogen of very high purity from a feed predominantly containing said hydrogen and a minor part of impurities mainly consisting of carbon dioxide, carbon monoxide, methane and heavier hydrocarbons. The purification method by hydrogen adsorption using a desorption stage at a lower pressure than the pressure of the feed, such as a PSA method for example, allows to produce the desorption stream and notably to recover the carbon dioxide under pressure and high-purity hydrogen, with a high yield. These performances are obtained by combining the successive stages of the method according to the invention with the use of a new family of adsorbent whose dynamic capacity at a high desorption pressure is greater than that of conventional adsorbents.

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The invention relates to a FAU-type zeolite membrane that comprises a FAU-type zeolite crystal layer incorporated in the surface porosity of at least one selected face of a porous substrate, in which the ratio between the thickness of said zeolite layer incorporated in the surface porosity of said selected face of the substrate and the total thickness of said zeolite layer is at least 70%. It also relates to processes for preparation and application of these membranes.

FAU-structural-type supported zeolite membranes, their process for preparation and their applications

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Charly, France

Gerhard Pirngruber