公开(公告)号：US3766092A

公开(公告)日：1973-10-16

申请号：US3766092D

申请日：1971-01-21

Applicant: ASAHI CHEMICAL IND

Inventor： HIRAKAWA K ,  AOKI K ,  HONDA M ,  DOZONO T ,  SUGITA N

IPC: C07B61/00 ,  B01J23/88 ,  B01J23/887 ,  B01J27/00 ,  B01J27/192 ,  C07C67/00 ,  C07C253/00 ,  C07C255/08 ,  B01J11/40 ,  B01J11/82

CPC classification number: C07C253/26 ,  B01J23/8876 ,  B01J27/192 ,  Y02P20/52 ,  C07C255/08

Abstract: IN THE PREPARATION OF UNSATURATED NITRILES BY CATALYTIC OXIDATION OF PROPYLENE OR ISOBUTYLENE WITH MOLECULAR OXYGEN IN THE PRESENCE OF AMMONIA USING A CATALYST COMPRISING OXIDES OF MOLYBDENUM, BISMUTH AND IRON, THE RESULTING UNSATURATED NITRILES ARE IPROVED IN YIELD BY USE OF A NOVEL CATALYST PREPARED BY INCORPORATING OXIDES OF COBALT AND ALKALI METALS (AT LEAST ONE OF SODIUM AND POTASSIUM) INTO SAID CATALYST IN SUCH A MANNER THAT THE ATOMIC RATIO OF MO/BI/FE/CO/NAT (OR K) MAY BE 12 1-11/1-9/1-6 0.5-2, WHEREIN THE SUM OF ATOMS OF BI AND CO IS CONTROLLED WITHIN 6-12, PREFERABLY 12/3.5-7/29/2-5/1/1. THE CATALYST IS USEFUL AS AN INDUSTRIAL CATALYST HAVING A HIGH CATALYST ACTIVITY AS WELL AS LONG LIFE, WHICH IS PARTICULARLY SUITABLE FOR USE IN A FLUIDIZEDBED REACTOR FOR THE PREPARATION OF UNSATURATD NITRILES FROM PROPYLENE AND ISOBUTYLENE.