Ifp Energies Nouvelles

Total Raffinage Chimie

Delphine Marti

Elsa Jolimaitre

Arnold Lambert

Emmanuelle Bracco

Elodie Comte

Catherine Laroche

Arnaud Baudot

Delphine Bazer-Bachi

Joseph Lopez

Sophie Drozdz

Mathieu Michau

The invention relates to an oxygen carrier solid, its preparation and its use in a method of combustion of a hydrocarbon feedstock by active mass chemical-looping oxidation-reduction, i.e. chemical-looping combustion (CLC). The solid, which is in the form of particles, comprises an oxidation-reduction active mass composed of metal oxide(s) dispersed in a ceramic matrix comprising at least one oxide with a melting point higher than 1500&#xb0; C., such as alumina, and has, initially, a specific macroporous texture. The oxygen carrier solid is prepared from an aqueous suspension containing precursor oxide grains for the ceramic matrix that have a specific size, by a spray-drying technique.

Macroporous oxygen carrier solid with an oxide ceramic matrix, method for the preparation thereof, and use thereof for a chemical-looping oxidation-reduction method

The invention relates to an oxygen carrier solid, its preparation and its use in a method of combustion of a hydrocarbon feedstock by active mass chemical-looping oxidation-reduction, i.e. chemical-looping combustion (CLC). The solid, which is in the form of particles, comprises an oxidation-reduction active mass composed of metal oxide(s) dispersed in a ceramic matrix comprising at least at least one feldspar or feldspathoid with a melting point higher than 1500&#xb0; C., such as celsian, and has, initially, a specific macroporous texture. The oxygen carrier solid is prepared from a precursor of the ceramic matrix, obtained from a macroporous zeolitic material with zeolite crystals of a specific size, and a precursor of the oxidation-reduction active mass.

Macroporous oxygen carrier solid with a refractory feldspar/feldspathoid, method for the preparation thereof, and use thereof in a chemical-looping oxidation-reduction method

The present invention concerns an adsorbent comprising at least one zeolite selected from a zeolite of the 12 MR, 10 MR and 8 MR type and at least one binder comprising a clay with a Si/Al weight ratio of more than 2. It also concerns its preparation process and its use in a process for purifying a hydrocarbon feed comprising unsaturated molecules and at least one impurity comprising at least one heteroatom of the O, S or N type.

Adsorbent based on a zeolite and a silica-rich clay, and process for purifying hydrocarbon feeds containing unsaturated molecules

The invention relates to a process for purification of olefinic feedstocks using an adsorbent comprising a 12 MR-type zeolite, in which the zeolite content of said adsorbent is between 93% by weight and 100% by weight, and the binder content of said adsorbent is between 0 and 7% by weight, in which said zeolite contains silicon and an element T that is selected from the group that consists of aluminum, boron, gallium and iron, and in which the Si/T atomic ratio is less than 20.

Process for purification of olefinic feedstocks using an adsorbent comprising a 12 MR-type zeolite

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Lyons, France

Delphine Marti