THERMAL DECOMPOSITION OF THE[Fe_6C(CO)_(16)]~(2-) ON ALUMINA AND MODIFIED ALUMINA

Thermal decomposition of the supported carbido cluster was investi-gated by in situ FT-IR spectroscopy in a temperature range of 25-300℃. Thesupported clusters on alumina and modified alumina with Me_4NBr or PPNClshow quite different decomposition ways in vacuo and under various atmo-spheres, such as H_2, CO, N_2 and CO + H_2. The different decomposition waysprobably lead to the different metal sites of the final catalyst.