PROCEDURE FOR THE MANUFACTURE OF ACRYLIC ACID FROM ACROLEIN BY REDOX REACTION.

摘要

THE PRESENT INVENTION REFERS TO THE USE OF A SOLID COMPOSITION OF MIXED OXIDES OF FORMULA (I): 2 A 14; 0.1 B 6; 0 C 12; 0 D 6; 0 E 15; X IS THE AMOUNT OF OXYGEN LINKED TO THE OTHER ELEMENTS, AND DEPENDS ON THEIR STATES OF OXIDATION. IN THE MANUFACTURE OF ACRYLIC ACID BY OXIDATION OF ACROLEIN, THE ABOVE SOLID COMPOSITION REACTS WITH ACROLEIN ACCORDING TO THE REDOX REACTION (1): TO MANUFACTURE ACRYLIC ACID, IT MAKES A MIXTURE OF ACROLEIN AND WATER VAPOR, AND INERT GAS OVER A SOLID COMPOSITION OF FORMULA (I) TO DRIVE THE REDOX REACTION (1) AT A TEMPERATURE OF 200 TO 500 C AND A PRESSURE BETWEEN 1.01 X 10 4 A 1.01 X 10 6 PA (0.1 A 10 ATMOSPHERES) AND WITH A PERMANENCE TIME INCLUDED BETWEEN 0.01 AND 90 SECONDS IN THE ABSENCE OF MOLECULAR OXYGEN.