摘要
具有维氏体（Ｗｕｓｔｉｔｅ）相结构的Ｆｅ１－ｘＯ基催化剂低温还原性能明显优于传统的Ｆｅ３Ｏ４基催化剂，其还原诱导期短。在干气氛条件下，Ｆｅ１－ｘＯ基催化剂还原动力学可用“壳－核模型”描述。空速和温度明显影响Ｆｅ１－ｘＯ基催化剂的活化，而压力影响不如它们显著。在工业还原过程中宜采用“低温、低压、高空速、高氢”
Fe 1-x O based catalyst with Wustite for ammonia synthesis was activited by reduction. Its activity and reduction performance are obviously superior to those of Fe 3O 4 based one. There is a short induction period in the reduction. The dry atmosphere reduction kinetics of Fe 1-x O can be well interpreted by the “core and shell” pattern in x=5%～85%. Temperature and space velocity influence the activation of Fe 1-x O based catalyst greatly, but pressure does not. The operation principle of “low temperature, low pressure, high space velocity, high hydrogen content” is suitable for the industrial reduction of Fe 1-x O based catalyst.
出处
《化学反应工程与工艺》
CAS
CSCD
北大核心
1997年第2期157-164,共8页
Chemical Reaction Engineering and Technology
基金
浙江省自然科学基金
关键词
Fe_1-xO基催化剂
氨合成
还原性能
活化
Fe 1-x O based catalyst, Ammonia synthesis, Reduction performance, Activation
