PROCESS FOR MANUFACTURING ACROLEIN OR ACRYLIC ACID FROM GLYCERIN

摘要

THE SUBJECT OF THE PRESENT INVENTION IS A PROCESS FOR PREPARING ACROLEIN BY DEHYDRATION OF GLYCERIN, CHARACTERIZED IN THAT THE DEHYDRATION IS CARRIED OUT IN THE PRESENCE OF A CATALYST COMPRISING MAINLY A COMPOUND IN WHICH PROTONS IN A HETEROPOLYACID ARE EXCHANGED AT LEAST PARTIALLY WITH AT LEAST ONE CATION SELECTED FROM ELEMENTS BELONGING TO GROUP 1 TO GROUP 16 OF THE PERIODIC TABLE OF ELEMENTS. THE PROCESS ACCORDING TO THE INVENTION PERMITS TO OBTAIN ACROLEIN AT HIGHER YIELD.