Ifp Energies Nouvelles

Mathias Dodin

Nicolas Bats

Joel Patarin

Philippe Caullet

Jean-Louis Paillaud

Joël Patarin

Yannick Lorgouilloux

Jean Daou

Maeva Borel

A process for preparing a nanometric zeolite Y of FAU structural type with a crystal size of less than 100 nm and an A/B ratio of greater than 2, by mixing, in aqueous medium, of at least one source AOof at least one tetravalent element A chosen from silicon, germanium and titanium, of at least one source BOof at least one trivalent element B chosen from aluminum, boron, iron, indium and gallium, of at least one source Cof an alkali metal or alkaline-earth metal C chosen from lithium, sodium, potassium, calcium and magnesium, where source Calso includes at least one source of hydroxide ions, to obtain a gel, maturation and hydrothermal treatment of the gel.

Process for preparing a nanometric zeolite Y

Preparation of a FAU-structural-type nanometric zeolite Y having a crystal size of less than 100 nm and an Si/Al ratio that is greater than 2: mixing, in aqueous medium, of at least one AOsource of at least one tetravalent element A that is silicon, germanium, and/or titanium, at least one BOsource of at least one trivalent element B that is aluminum, boron, iron, indium, and/or gallium, at least one CO source of an alkaline metal or alkaline-earth metal C that is lithium, sodium, potassium, calcium, and/or magnesium the CO source also having at least one hydroxide ion source obtaining a gel, curing of the gel after at least 3 days of curing, with addition of at least one source of at least one tetravalent element A and the hydrothermal treatment of the gel obtained at a to achieve crystallization of the FAU-structural-type nanometric zeolite Y.

Method for preparing a nanometric zeolite Y

The invention concerns a crystalline solid designated IM-20 which has the X-ray diffraction diagram given below. Said solid has a chemical composition expressed by the empirical formula: mXO: nGeO: pZO: qR: sF: wHO, in which R represents one or more organic species, X represents one or more tetravalent element(s) other than germanium, Z represents at least one trivalent element and F is fluorine.

IM-20 crystalline solid and process for its preparation

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Oullins, France

Mathias Dodin