摘要
通过微分反应器中的丙烯脉冲还原反应，研究了铁铋钼、铁锑碲及铁锑三种复合氧化物催化剂中晶格氧的活动性。测定了铁铋钼、铁锑碲两种氧化物催化剂体相晶格氧扩散活化能，半定量地研究了氧化物表面区晶格氧的活动性，对晶格氧的活动性与氧化选择性的关系进行了讨论。
Abstract A detailed study on the pulse reduction behavior of the model catalysts, Bi3FeMo2O12,Fe-Te-Sb-O and Fe2O3-Sb2O4 were carried out to investigate the mobility of lattice oxygen,with propylene as the reductant and at a temperature range of 652-749K. An efficient method was proposed to measure the diffusivity of bulk lattice oxygen of Bi3FeMo2O12 and to give a semi-quantitative estimation of the oxygen mobility near the surface of the studied catalysts.The role of oxygen mobility in the selectivity of propylene over the catalysts was discussed.
基金
国家教委博士点专项基金
