B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
252/52.D
B01J 23/74 (2006.01) B01J 23/26 (2006.01) B01J 23/745 (2006.01) B01J 23/86 (2006.01) C07C 37/16 (2006.01)
Patent
CA 1221675
"IMPROVED PROCESS FOR PREPARING ALKYLATION CATALLYSTS" ABSTRACT OF THE DISCLOSURE: Preparation of alkylation catalysts containing iron and/or chromium oxide, by means of a process which comprises: a) precipitating hydrate oxides of iron and/or chromium from an aqueous solution of soluble compounds of said elements; b) separating the thus obtained precipitate, and washing said precipitate; c) granulating the washed precipitate, and drying the granules so obtained; d) calcining said dried granules at high temperature; in which an organic carboxyl acid salt of iron and/or chromium is added to and homogenized with the washed precipitate from stage b), and/or the dried granules from stage c) are impregnated with an aqueous solution of an organic carboxyl acid salt of iron and/or chromium. The catalysts obtained by means of the above process are mechanically strong, and highly active in the production process of 2,6-xylenol by means of the alkylation of phenol or o-cresol with methanol.
469320
Bialy Jan
Cmielewska Jolanta
Grabowska Hanna
Kaczmarczyk Wlodzimierz
Kopytowska Nikuca
Enichem S.p.a.
Robic Robic & Associes/associates
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