A series of Mg-Al-Ce mixed oxides with (nMg²⁺)/(nCe³⁺ + nAl³⁺) = 5 and nCe³⁺/(nCe³⁺ + nAl³⁺) = 0 ∼ 7% were synthesized by co-precipitation method based on a hydrotalcite route and used as support to prepare Co-Mo sulfur-resistant water-gas shift (WGS) catalysts. The supports and catalysts were characterized by XRD, ICP, N₂-physisorption, CO₂-TPD, H₂-TPR, H₂S-TPS, TEM, and CO-IR. It is found that the catalytic performance and physicochemical property of the Co-Mo/Mg(Al)O catalyst are significantly influenced by the Ce modification. The addition of Ce effectively enhances the WGS activity and the highest activity is obtained on the Co-Mo/Mg(Al)O-CeO₂ (5%) catalyst, where the activity at 623 K increases about 2.5 times. The results of H₂S-TPS investigation show that in the presence of Ce, the H₂S consumption peak shifts to lower temperatures and there is decrease of Mo sulfidation activation energy. Furthermore, HRTEM analysis shows that the addition of Ce (5%) results in decrease of MoS₂ slab length and stacking number, and those of CO-IR characterization indicate increased exposure of surface MoS₂ sites. It is suggested that the addition of Ce promotes the formation of MoS₂ slabs that are smaller in size, leading to higher exposure of surface active sites and hence higher activity.

一系列具有（NMG的Mg-Al-Ce的混合氧化物的²⁺）/（NCE ³⁺  + NAL ³⁺）= 5和NCE ³⁺ /（NCE ³⁺  + NAL ³⁺）= 0〜7％是由合成基于水滑石路线的共沉淀法，并作为载体来制备耐Co-Mo耐硫硫的水煤气变换（WGS）催化剂。载体和催化剂进行了表征通过XRD，ICP，N ₂ -physisorption，CO ₂ -TPD，H ₂ -TPR，H ₂S-TPS，TEM和CO-IR。发现Co-Mo / Mg（Al）O催化剂的催化性能和理化性质受Ce改性的影响很大。Ce的添加有效地提高了WGS的活性，在Co-Mo / Mg（Al）O-CeO ₂（5％）催化剂上获得了最高的活性，其中623 K的活性增加了约2.5倍。H ₂ S-TPS研究的结果表明，在Ce的存在下，H ₂ S的消耗峰移至较低的温度，并且Mo硫化活化能降低。此外，HRTEM分析表明，添加Ce（5％）会降低MoS ₂平板长度和堆垛数量以及CO-IR表征表明表面MoS ₂位置的暴露增加。建议添加Ce可以促进尺寸较小的MoS ₂平板的形成，从而导致更高的表面活性位点暴露量，从而获得更高的活性。