用ESR和XRD法研究MoO_3、M_2CO_3、(M=Li、Na、K、Cs)-MO_3焙烧过程中的固相反应

INVESTIGATION OF THE SOLID REACTION IN THE CALCINING M 2CO 3(M=Li,Na,K,Cs)-MoO 3 SYSTEM BY ESR AND XRD

ＥＳＲ研究结果发现ＭｏＯ３在焙烧过程中可以失去晶格氧，生成Ｍｏ５＋，当加入一定量的Ｎａ＋、Ｋ＋时，可促进这一反应的进行，但Ｌｉ＋、Ｃｓ＋的加入则对这一反应有抑制作用。用ＸＲＤ对焙烧后的Ｋ２ＣＯ３－ＭｏＯ３体系测试时，发现有非计量型化合物生成。

From ESR results,Mo 5+ was observed in the calcining of MoO 3 by loss of lattice oxygen. Addition of Na + or K + to MoO 3 will lead to enhance the reaction of loss O 2, however the reaction will be inhibited by adding the Li + or Cs +, Non stoichiometric compound was observed in the thermoprocess of K 2CO 3-MoO 3 by XRD.