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用硝酸盐水溶液等量共浸法制备了分别在７５０℃和９００℃焙烧的系列催化剂Ｃｏ—Ｍ／γ—Ａ１２ｏ３（Ｍ—Ｃａ、Ｓｒ、Ｂａ，Ｃｏ３Ｏ４／Ａｌ２Ｏ３＝８ｗｔ％，Ｍ／Ｃｏ＝１５ｍｏｌ％）．测定了Ｃ０氧化转化率，用ＢＥＴ表面，ＸＲＤ、ＸＰＳ、ＤＴＡ和ＴＰＲ等手段研究了助剂Ｂａ、Ｓｒ、Ｃａ的作用．结果表明，加入助剂后，ＣＯ完全转化温度下降了２０—６０℃左右．助剂的作用顺序为Ｃａ＞Ｓｒ＞Ｂａ．实验表明．７５０℃和９００℃焙烧的样品中不含Ｃｏ３Ｏ４相，表面低配位的Ｃｏ２＋—Ａｌ３＋互作用相为主要活性物相．Ｂａ２＋、Ｓｒ２＋、Ｃａ２＋在表面富集起一定的抗烧结作用，但也占据了部分表面活性位．助剂均以氧化物形式存在．在本篇（Ⅰ）中４００℃和６００℃焙烧的样品比较，单一的Ｃｏ／γ—Ａｌ２Ｏ３以及加助剂的样品活性均有所下降，这是因为随着焙烧温度的提高，Ｃｏ物相与载体作用加强，助剂的抑制能力被削弱．
A series of catalysts Co-M / γ-A12o3 (M-Ca, Sr, Ba, Co3O4 / Al2O3 = 8wt%, M / Co = 15mol) calcined at 750 ℃ and 900 ℃ %). The oxidation conversion rate of C0 was determined. The effects of Ba, Sr and Ca promoters were investigated by BET surface, XRD, XPS, DTA and TPR. The results showed that after the addition of additives, the complete conversion temperature of CO decreased about 20-60 ℃. The order of the additives is Ca> Sr> Ba. Experiments show. The samples calcined at 750 ℃ and 900 ℃ do not contain Co3O4 phase, and the low-coordination Co2 + -Al3 + interaction phase is the main active phase. Ba2 +, Sr2 +, Ca2 + in the surface enrichment play a certain anti-sintering effect, but also occupy part of the surface active sites. Auxiliaries are present as oxides. Compared with the samples calcined at 400 ℃ and 600 ℃ in this article (Ⅰ), the activity of single Co / γ-Al2O3 and additive samples decreased. The reason is that as the calcination temperature increases, The role of carriers to strengthen the inhibitory capacity of additives weakened.