公开(公告)号：CA1122959A

公开(公告)日：1982-05-04

申请号：CA323406

申请日：1979-03-14

Applicant: HOECHST AG

Inventor： WUNDER FRIEDRICH ,  QUADFLIEG THERESE ,  ROSCHER GUENTER ,  HECK GUENTHER

IPC: C07C67/05 ,  B01J23/58 ,  B01J23/60 ,  B01J23/66 ,  B01J31/00 ,  B01J35/02 ,  C07B61/00 ,  C07C67/055 ,  C07C69/14 ,  C07C69/15 ,  B01J23/06 ,  B01J23/44

Abstract: HOE 78/F 050 CARRIER CATALYST FOR THE PREPARATION OF VINYL ACETATE FROM ETHYLENE, ACETIC ACID AND OXYGEN IN THE GASEOUS PHASE HOE 78/F 050 of the disclosure: The carriers contain common active components, namely noble metals of the 8th sub-group or compounds thereof, and as activators alkali metal compounds, alkaline earth metal compounds or cadmium compounds. The carriers, too, consist of common materials, such as silicic acid. A novel feature is to be seen in the shape of the carrier particles which are designed as rod sections having a star-shaped cross section (Figures 1 to 7) or as ribbed rods (Figure 8). In relation to the apparent density and thus in relation to the amount of noble metal employed, a considerably higher space-time yield is reached than with carrier particles of a conventional shape.