中文摘要：

平炉尘提纯得到超细Fe2O3利用同晶型间的拓扑转化原理，使平炉尘转化为超细铁氧体MnFe2O4、CoFe2O4催化剂，并对催化剂进行了BET、XRD、H2-TPR、TEM和电导技术表征，研究了其对丙烷氧化脱氢制丙烯反应的催化性能。实验结果表明由平炉尘转化得到的超细铁氧体CoFe2O4为P型半导体催化剂，对丙烷氧化脱氢制丙烯反应表现出优异的催化性能，当丙烷转化率在10%和20%时，丙烯的选择性分剐为40．34％和35．23％。为资源综合利用及减少环境污染提供了新方法．

英文摘要：

Based on the principal of topotactic transformation in the isomorphous crystal, micropowder ferrite catalysts （MnFe2O4, CoFe2O4） were synthesized using fine Fe2O3 from purified open-heath dust. Then, these catalysts were characterized by X-ray diffraction （XRD）, BET, H2-TPR, TEM and conductivity measurement. Their catalytic performance for the oxidative dehydrogenation of propane to propene had also been investigated. The results demonstrated that p-semiconductor CoFe2O4 catalyst showed high performance for propene formation. On CoFe2O4 catalyst, 40.34% and 35.23% C3H6 selectivity could be obtained at 10% and 20% propane conversion respectively. The study provided a new way in comprehensively utilizing resources and reducing environmental pollution.