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报道了浸水处理后高强度A110-5Q球形氨合成催化剂各种物理化学性能的变化考察了两种铁酸钾KFeO_2、K_1+x_Fe_11o_17(x=o~1)的水溶性对溶铁氨合成催化剂(氧化态)中存在的水溶性钾和非水溶性钾进行了归属水溶性钾主要集中在Fe_3O_4晶粒间的边界上,以KFeO_2、KOH、K_2CO_3和KAlO_2等物相存在;非水溶性钾则是高度分散于Fe_3O_4晶粒内的非计量化合物K_1+x_Fe_11O_17(x=0~1)水溶性钾量远高于非水溶性钾的含量,但前者对催化活性的作用却不如后者明显,对这一现象的本质原因进行了深入的探讨。
The changes of physicochemical properties of high-strength A110-5Q spherical ammonia synthesis catalyst after soaking were investigated. The effects of water-solubility of two potassium ferrites KFeO_2, K_1 + x_Fe_11o_17 (x = o ~ 1) ) Were found to be attributed to water-soluble potassium and water-insoluble potassium. Water-soluble potassium mainly concentrated on the boundary between Fe 3 O 4 crystal grains and existed as KFeO 2, KOH, K 2 CO 3 and KAlO 2. Non-water-soluble potassium was highly dispersed The amount of water-soluble potassium in non-metric compounds K_1 + x_Fe_11O_17 (x = 0 ~ 1) in Fe_3O_4 grains is much higher than that of non-water-soluble potassium, but the effect of the former on the catalytic activity is not as obvious as the latter The essential reason has carried on the thorough discussion.