Process for preparing a catalyst containing a modified...

Details Process for preparing a catalyst containing a modified... Process for preparing a catalyst containing a modified...

2006-11-03

2010-12-07

Choi, Ling-Siu (Department: 1796)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymers from only ethylenic monomers or processes of...

C502S152000

Reexamination Certificate

active

07847037

ABSTRACT:
A process for the preparation of a catalyst that contains at least one modified zeolite, whereby said zeolite—before being modified—has a maximum pore opening diameter that is less than or equal to 7 Å, and whereby said process comprises at least:a) One stage for introducing at least one metal that is selected from among the metals of groups VIB and VIII of the periodic table on a substrate that is based on at least one protonated zeolite,b) One stage for treating said zeolite in the presence of at least one molecular compound that contains at least one silicon atom, and said compound that has a diameter that is greater than the maximum opening diameter of the pores of said zeolite,c) At least one heat treatment stage,is described.

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patent: WO 2004/108282 (2004-12-01), None
patent: WO 2005/118515 (2005-12-01), None

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