摘要
采用气相流动吸附法制ＴｉＯ２／γ－Ａｌ２Ｏ３复合载体，浸渍法担载一定量ＭｏＯ３或ＣｏＯ－ＭｏＯ３．用ＸＲＤ，ＬＲＳ和ＴＰＲ等技术考察了Ｍｏ或Ｃｏ－Ｍｏ催化剂的表面结构和还原性能．结果表明，覆盖在γ－Ａｌ２Ｏ３上的ＴｉＯ２能减弱ＭｏＯ３与γ－Ａｌ２Ｏ３之间的相互作用，明显改善Ｍｏ催化剂的表面结构，促进ＭｏＯ３的还原，适量ＣｏＯ助剂的加入能促进ＭｏＯ３在载体表面的分散．
TiO2/γ-Al2O3 complex support is prepared by using gas phase adsorption method and a definite amount of MoO3 or CoO-MoO3 is deposited on TiO2/γ-Al2O3 by means of impregnation.Techniques such as XRD,LRS,TPR,are used to study the surface structure and reduction behavior of Mo or Co-Mo catalyst.The results reveal that TiO2 covering γ-Al2O3 can weaken interaction between MoO3 and γ-Al2O3,improve effectively the surface structure of Mo catalyst,promote the reduction of MoO3 more easily.A definite amount of CoO added into Mo catalyst can promote the dispersion of MoO3 on the surface of support.
出处
《宁德师范学院学报（自然科学版）》
1998年第2期6-9,共4页
Journal of Ningde Normal University(Natural Science)
基金
福建省自然科学基金
