【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Mn-Fe2O4、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,丙烯的选择性分别为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。更多还原

【Abstract】 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.更多还原