Catalytic process for the ammonoxydation of olefins

Abstract

Abstract THE KNOWN METHOD OF PREPARING OLEFINIC NITRILES BY OXIDIZING A GASEOUS MIXTURE OF OLEFIN WITH AMMONIA, OVER A CATALYST CONTAINING MO AND TE OXIDES, HAS BEEN IMPROVED BY SELECTING A CATALYTICALLY ACTIVE MATERIAL WHICH CONSISTS OF A COMBINATION OF 1 MOLE MO03 WITH 10 TO 0.1 MOLES TE03 AND 0.1 TO 1 MOLE FE203, AND PREFERABLY WITH 0935 TO 0914 MOLE TE03 AND 0.14 TO 0.2 MOLE FE203. THE IMPROVED METHOD IS PARTICULARLY SUITABLE FOR THE PRODUCTION OF ACRYLONITRILE BY THE AMMONOXIDATION OF PROPYLENE, AND ALLOWS ONE TO RECH YIELDS OF MORE THAN 70% WITH RESPECT TO THE OLEFIN USED, WHEN THE TEMPERATURE, NORMALLY OF 300* TO 600*C., IS KEPT WITH THE NARROWER LIMITS OF 380* TO 450*, THE DURATION OF CONTACT BETWEEN REACTING GASES AND CATALYST IS 3 TO 10 SECONDS, AND THE GASEOUS MIXTURE CONTAINS BY VOLUME 1 TO 15% OF PROPYLENE, 1 TO 15% OF AMMONIA AND 2 TO 14% OF OXYGEN, THE BALANCE BEING NITROGEN AND/OR STEAM.

Inventors

• 👤 Philippe Reulet
• 👤 Alain Pfister
• 👤 Jacques Tellier
• 👤 Jean-Henry Blanc
• 👤 Kirsten Borre Jorgensen
• 👤 Hans Bohlbro

Bibliographic Details