It was studied a benign one-pot synthesis of a steam and SO₂ stable molybdenum promoted cobalt catalyst supported on SBA-15 for CO oxidation runs at 730 ̊C. The physicochemical properties of the catalyst were analyzed by XRD, SEM/HRTEM, UV–vis, Raman spectroscopy, XPS, H₂-TPR, and NH₃-TPD. Well-dispersed Co₃O₄ and, molybdenum species allowed to maintain CO conversion close to 90 % against 55 % over the non-Mo-promoted Co-catalyst. That promising behavior was attributed to the strong Co-Mo interaction that improved the acidic properties, which strongly decreased deactivation by SO₂ and water steam. The impregnated catalyst presented formation of aggregated MoO₃ species and Co₃O₄ mainly inside the SBA-15 mesopores, leading to lower CO oxidation activity and lower catalytic stability in the presence of the above interfering compounds. Thus, the one-pot prepared molybdenum promoted cobalt catalyst supported over mesoporous silica SBA-15 emerges as a potential alternative to substitute CO oxidation catalysts based on noble metals.

研究了在SBA-15上以730°C进行CO氧化的蒸汽和SO ₂稳定的钼促进的钴催化剂的良性一锅合成方法。通过XRD，SEM / HRTEM，UV-vis，拉曼光谱，XPS，H ₂ -TPR和NH ₃ -TPD分析了催化剂的理化性质。与非钼助催化剂相比，分散良好的Co ₃ O ₄和钼可以使CO转化率维持在接近90％而不是55％的水平。这种有希望的行为归因于强大的Co-Mo相互作用，从而改善了酸性，从而大大降低了SO ₂和水蒸汽的失活。浸渍的催化剂呈现出聚集的MoO _3的形成在上述干扰化合物的存在下，SBA-15中孔中的H ₂ O ₄和Co ₃ O ₄主要存在于SBA-15中孔中，导致较低的CO氧化活性和较低的催化稳定性。因此，一锅制备的负载在介孔二氧化硅SBA-15上的钼促进的钴催化剂作为取代基于贵金属的CO氧化催化剂的潜在替代品而出现。