Univ Lille Nord de France, USTL, Unité de Catalyse et de Chimie du Solide, UMR CNRS 8181, 59652 Villeneuve d'Ascq, France.
J Hazard Mater. 2011 Apr 15;188(1-3):422-7. doi: 10.1016/j.jhazmat.2011.01.135. Epub 2011 Feb 26.
The composition-activity relationship of Zr-Ce-Mn-O materials was investigated for the catalytic removal of Oxygenated Volatile Organic Compounds (OVOC) emitted by stationary sources. Using a sol-gel method, very high surface specific areas, small crystallite sizes and high redox properties were obtained for Zr(0.4)Ce(0.6-x)Mn(x)O(2) catalytic systems after calcination at 500°C. The textural and redox properties were improved when Mn content increased in the material, especially for x=0.36. As a result the most active and selective catalyst in the butanol (model of OVOC) oxidation was obtained for the nominal composition Zr(0.4)Ce(0.24)Mn(0.36)O(2) due to a high oxygen mobility and surface Mn(4+) concentration.
研究了 Zr-Ce-Mn-O 材料的组成-活性关系，以催化去除固定源排放的含氧挥发性有机化合物 (OVOC)。采用溶胶-凝胶法，在 500°C 下煅烧后，Zr(0.4)Ce(0.6-x)Mn(x)O(2)催化体系获得了非常高的比表面积、小的晶粒尺寸和高的氧化还原性能。当材料中 Mn 含量增加时，其结构和氧化还原性能得到改善，特别是当 x=0.36 时。结果，由于高的氧迁移率和表面 Mn(4+)浓度，在正丁醇（OVOC 模型）氧化中获得了最活跃和选择性的催化剂，其名义组成为 Zr(0.4)Ce(0.24)Mn(0.36)O(2)。
