Process for isomerizing an aromatic C8 cut in the presence...

Details Process for isomerizing an aromatic C8 cut in the presence... Process for isomerizing an aromatic C8 cut in the presence...

2011-02-22

2011-02-22

Dang, Thuan Dinh (Department: 1771)

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By isomerization

C585S482000

Reexamination Certificate

active

07893309

ABSTRACT:
A process is described for isomerising an aromatic cut containing at least one aromatic compound containing eight carbon atoms per molecule, comprising bringing said cut into contact with a catalyst containing a zeolite with structure type EUO, said catalyst having been prepared using a process comprising at least the following steps:i) synthesizing at least one zeolite with structure type EUO having an overall Si/Al atomic ratio in the range 5 to 45;ii) dealuminating the zeolite obtained at the end of said step i) using at least one treatment with an aqueous solution of a mineral acid or an organic acid, such that at least 10% by weight of the aluminium atoms are extracted from said zeolite from said step i);iii) forming said dealuminated zeolite with a matrix;iv) depositing at least one metal from group VIII of the periodic table of the elements, the order of carrying out said steps iii) and iv) being inconsequential following on from said step ii).

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Preliminary Report on Patentability completed Nov. 20, 2007 in French application No. 07/02.941.
Rao, G.N. et al., “Thermal and Hydrothermal Stabilities of Zeolite EU-1,” Applied Catalysis A: General, vol. 119, 1994, pp. 33-43, XP002055790.

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