Ifp Energies Nouvelles

Renal-Vasco Backov

Denis Uzio

Antoine Fecant

Serge Ravaine

Sophie Bernadet

The invention relates to a photocatalytic carbon dioxide reduction method carried out in liquid and/or gas phase under irradiation, using a photocatalyst containing a first semiconductor, particles comprising one or more metallic-state elements M, and a second semiconductor SC, wherein the method is carried out by contacting a feedstock containing the COand at least one sacrificial compound with the photocatalyst, then irradiating the photocatalyst such that the COis reduced, and oxidising the sacrificial compound in order to produce an effluent containing at least in part C1 or above carbon molecules other than CO.

Photocatalytic carbon dioxide reduction method using a photocatalyst in the form of a porous monolith

Process for preparing a porous monolith comprising between 10% and 100% by weight of a semiconductor relative to the total weight of the porous monolith, which process comprises the following steps:

Process for preparing a monolith with multimodal porosity

The invention relates to a porous monolith comprising between 20 wt.-% and 70 wt.-% TiO 2 relative to the total weight of the monolith, and between 30 wt.-% and 80 wt.-% a refractory oxide, selected from silica, alumina or silica-alumina, relative to the total weight of the monolith, characterized in that said porous monolith has a bulk density of less than 0.19 g/mL.

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Bordeaux, France

Renal-Vasco Backov