US 6,514,479 B1 · EUO zeolite comprising crystals and aggregates of crystals with specific granulometrys and its use as a catalyst in the isomerisation of C8 aromatic compounds

Abstract

The invention concerns a zeolite with structure type EUO comprising EUO zeolite crystals with a size of less than 5 μm, at least a portion of the EUO zeolite crystals being in the form of EUO zeolite aggregates, characterized in that the granulometry of the aggregates is such that Dv,90 is 500 μm or less. The invention also concerns the preparation of the zeolite and the use of the zeolite as a catalyst, for example in a process for isomerising aromatic compounds containing 8 carbon atoms per molecule.

Claims58

Dependent claims

A zeolite with structure type EUO comprising EUO zeolite crystals with a size of less than 5 μm, at least a portion of the EUO zeolite crystals being in the form of EUO zeolite aggregates, characterized in that the granulometry of said aggregates is such that the value of Dv,90 is in the range of 200 μm to 40 nm.

Dependencies are inferred from the claim text.

Facts

Application

09/471,323Filed 23 Dec 1999

Priority

FR 98 1642123 Dec 1998

Granted

4 Feb 2003

Term ends

Not estimatedThe source records don’t support an estimate.

Classification13 codes

B01J 29/7023
Of types characterised by their specific structure not provided for in groups B01J29/08 - B01J29/65: euo-type, e.g. eu-1, tpz-3 or zsm-50
B01J 29/7446
Noble metals: euo-type, e.g. eu-1, tpz-3 or zsm-50
B01J 35/40
Catalysts, in general, characterised by their form or physical properties: characterised by dimensions, e.g. grain size
B01J 35/45
Characterised by dimensions, e.g. grain size: nanoparticles

EUO zeolite comprising crystals and aggregates of crystals with specific granulometrys and its use as a catalyst in the isomerisation of C8 aromatic compounds

Life of this patent

EUO zeolite comprising crystals and aggregates of crystals with specific granulometrys and its use as a catalyst in the isomerisation of C8 aromatic compounds

Life of this patent

Abstract

Claims58