Large particle dehydrogenation catalyst and process

Details Large particle dehydrogenation catalyst and process Large particle dehydrogenation catalyst and process

B - Operations, Transporting

01

J

B01J 23/745 (2006.01) B01J 23/76 (2006.01) B01J 35/02 (2006.01) C07C 5/333 (2006.01) C07C 15/46 (2006.01)

Patent

CA 2207560

The instant invention presents a method for improving the catalytic activity of an iron oxide catalyst without introducing a corresponding loss in selectivity. The catalyst is made from an iron-containing compound having large iron oxide particles. A process for preparing iron oxide dehydrogenation catalyst is also presented in which an iron-containing compound having large particles of iron oxide is combined with a potassium containing compound and water, this mixture is then formed into a pellet, and the pellet is calcined. The catalysts are particularly useful in the production of styrene from ethylbenzene.

La présente invention concerne un procédé de perfectionnement de l'activité catalytique d'un catalyseur à base d'oxyde de fer sans que ce perfectionnement implique une perte correspondante de sélectivité dudit catalyseur. On fabrique ce catalyseur à partir d'un composé contenant du fer et présentant de grosses particules d'oxyde de fer. On décrit également un procédé de préparation d'un catalyseur de déshydrogénation à base d'oxyde de fer dans lequel on combine un composé contenant du fer et possédant de grosses particules d'oxyde de fer, avec un composé contenant du potassium ainsi qu'avec de l'eau, puis on met ce mélange sous la forme d'une pastille que l'on calcine. Ces catalyseurs sont particulièrement utiles dans la production de styrène à partir de l'éthylbenzène.

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