近十余年来,在氨合成铁催化剂中添加稀土氧化物已有不少报道,有的活性有所提高.我们通过添加稀土、调整催化剂组成和改进制备工艺得到几种活性较A110—5Q型(原名HAC型)高,而且是非常容易还原的催化剂.本文的目的是研究稀土氧化物对催化剂还原性能的影响及几种活性较高容易还原的含稀土催化剂的本征还原动力学. In recent ten years, there have been many reports on the addition of rare earth oxides in ammonia synthesis iron catalysts, and some of them have been improved.We obtained several kinds of actives by adding rare earths, adjusting the catalyst composition and improving the preparation process compared with A110-5Q (Formerly known as HAC type) and is a very easily reducible catalyst.The purpose of this paper is to study the effects of rare earth oxides on the reduction performance of catalysts and the intrinsic reduction kinetics of rare earth-containing catalysts with high activity and high reactivity.