公开(公告)号：EP0146169B1

公开(公告)日：1987-06-03

申请号：EP84201710.5

申请日：1984-11-26

申请人： ENICHEM S.p.A.

发明人： Bialy, Jan ,  Penczek, Irena ,  Kopytowska, Nikuca ,  Wrzyszcz, Jozef ,  Cmielowska, Jolanta ,  Grabowska, Hanna ,  Kaczmarczyk, Wlodzimierz ,  Mazur, Kazimierz ,  Mista, Wlodzimierz

IPC分类号： B01J23/76 ,  C07C37/16

CPC分类号： B01J37/031 ,  B01J23/26 ,  B01J23/745 ,  B01J23/862 ,  C07C37/16 ,  C07C39/07

公开(公告)号：EP0146169A1

公开(公告)日：1985-06-26

申请号：EP84201710.5

申请日：1984-11-26

申请人： ENICHEM S.p.A.

发明人： Bialy, Jan ,  Penczek, Irena ,  Kopytowska, Nikuca ,  Wrzyszcz, Jozef ,  Cmielowska, Jolanta ,  Grabowska, Hanna ,  Kaczmarczyk, Wlodzimierz ,  Mazur, Kazimierz ,  Mista, Wlodzimierz

IPC分类号： B01J23/76 ,  C07C37/16

CPC分类号： B01J37/031 ,  B01J23/26 ,  B01J23/745 ,  B01J23/862 ,  C07C37/16 ,  C07C39/07

摘要： 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.