申请人:Dubois Jean-Luc
公开号:US20100204502A1
公开(公告)日:2010-08-12
The subject of the present invention is a process for preparing acrolein by dehydration of glycerol in the presence of a catalyst system based on iron phosphorous oxide containing, in addition, one or more elements chosen from alkali metals, alkaline-earth metals, AI, Si, B, Co, Cr, Ni, V, Zn, Zr, Sn, Sb, Ag, Cu, Nb, Mo, Y, Mn, Pt, Rh and the rare earths La, Ce, Sm. The process is preferably carried out in the gas phase in the presence of oxygen starting from aqueous solutions of glycerol. The process according to the invention makes it possible of obtain high acrolein selectivities.
本发明的主题是一种在含有基于磷氧化铁的催化剂体系存在的条件下,通过甘油脱水制备丙烯醛的方法,所述催化剂体系还包含从碱金属、碱土金属、铝、硅、硼、钴、铬、镍、钒、锌、锆、锡、锑、银、铜、铌、钼、钇、锰、铂、铑和镧系元素镧、铈、钐中选择的一个或多个元素。该方法最好在氧气存在的气相中,从甘油的水溶液出发进行。根据本发明的方法可以获得高丙烯醛选择性。