Ln_2O_3/MgO(Ln=Nd、Sm、Er)催化合成DOP、DOM和DOA

Ln 2O 3(MgO)(Ln=Nd、Sm、Er) Catalyst For Synthesizing DOP,DOM and DOA

采用共沉淀—焙烧法制成的Ｌｎ２Ｏ３／ＭｇＯ（Ｌｎ＝Ｎｄ、Ｓｍ、Ｅｒ）担载型催化剂，由于比表面增大，分散性好。在催化合成ＤＯＰ、ＤＯＭ、ＤＯＡ中效果明显，且Ｌｎ２Ｏ３的用量下降８０％左右。

The catalytic esterification of rare earth oxides to synthesize DOP,DOM and DOA was further improved by using the supported catalyst Ln 2O 3(MgO)(Ln=Nd、Sm、Er).The catalyst was prepared by coprecipitation-calcination method,the increased catalytic activity was due to the high dispersion of rare earth ions on the surface of MgO.On the other hand,the amount of rare earth oxide used in this method was reduced by about 80%,so the total production cost was much lowered.