With increased FeO content,the surface properties and surface structure of the reduced catalyst were changed,and the number of active site was decreased and the intensity (TOF) of active site was increased.

• 实验发现 ；随着母体中FeO含量的增加 ；还原后催化剂表面性质和表面结构改变 ；表面活性位数目减少而活性位强度增大 .