中华医学超声杂志

应用化学 ›› 1984, Vol. 0 ›› Issue (4): 10-16.

• 研究论文 • 上一篇    下一篇

气相色谱法研究配位化合物的热稳定性Ⅹ.K3[Fe(C2O4)3]在HZSM-5和HY沸石上的热分解

汪信1, 忻新泉1, 戴安邦1, 张毓昌2   

  1. 1. 南京大学配位化学研究所;
    2. 南京大学物理系
  • 收稿日期:1984-03-12 修回日期:1984-05-14 出版日期:1984-12-10 发布日期:1984-12-10

STUDIES ON THERMAL STABILITIES OF COORDINATION COMPOUNDS Ⅹ.Termal Decomposition of K3[Fe(C2O4)3]/HZSM-5 and K3[Fe(C2O4)3]/HY

Wang Xin1, Xin Xinquan1, Dai Anbang(Tai An-Pang)1, Zhang Yuchang2   

  1. 1. Coordination Chemistry Research Institute, Nanjing University, Nanjing;
    2. Physics Department, Nanjing University, Nanjing
  • Received:1984-03-12 Revised:1984-05-14 Published:1984-12-10 Online:1984-12-10

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摘要： 以气相色谱和Mossbauer谱研究了K3[Fe(C2O4)3)负载在HZSM-5和HY沸石上的性质和热分解。实验表明这两种沸石对负载的K3[Fe(C2O4)3)有明显的不同作用。K3[Fe(C2O4)3]/HZSM-5仅部分消失K3[Fe(C2O4)3]的分解特征,氢气中的还原产物为α-Fe,而K3[Fe(C2O4)3/HY在500℃时的固相产物为不易还原的高分散体系。

Abstract: Some properties and thermal decomposition of K3[Fe (C2O4)3] supported on HZSM-5 and HY zeolites have been studied by GC,MB,and IR methods.The Mo ssbauer spectrum and the infrared spectrum of K3[Fe(C2O4)3]/HY system were quite different from those of K3[Fe(C3O4)3], but for K3[Fe(C2O4)3]/HZSM-5 system, the differences were not roticeable. The decomposition mechanism of K3[Fe(C2O4)3]/HY system was quite different from that of the unsupported owing to the interaction between C2O42- and Al3+ and that between Fe3+ and the surface OH group of the support as well. The decomposition products were in highly dispersed state with iron cations. It was difficult to reduce them in H2 due to the strong effect of the surface of HY. In K3[Fe(C2O4)3]/HZSM-5 system the decomposition of K3[Fe(C2O4)3]was only partly modified because of the high Si/Al ratio and the weaker interaction between K3[Fe(C2O4)3] and the support.

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