Affiliation:
1. Taiyuan Institute of Technology
2. Chengdu Organic Chemicals (China)
Abstract
AbstractIn this study, a series of Ce-modified Co3O4catalysts were prepared by co-precipitation. The influence of Ce/(Ce + Co) ratio on the catalyst microstructure and catalytic oxidation performance of toluene were systematically investigated. The results showed that introduction of Ce lead to great changes in the structure with a smaller crystallite size of Co3O4and larger specific surface area of the catalyst. More importantly, Ce dopant can significantly weaken the Co-O bond strength and enhance the activity of oxygen species, thus improving the degradation efficiency of toluene. Due to the weakest Co-O bond strength, abundant oxygen vacancy, and the strongest reducibility of Co3+, CoCe0.05Oxcatalyst exhibited the best catalytic oxidation activity of toluene (T90 = 225℃). In addition, CoCe0.05Oxcatalyst presented good stability and repeatability during 30 h durability test under water vapor.
Publisher
Research Square Platform LLC
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