Citation: LI Yue, ZHANG Ting-Ting, WANG Juan, ZHU Zhen, JIA Bing, YU Jiang. Catalytic Combustion of n-Hexanal Using Cu-Mn Composite Oxide Supported on TiO₂[J]. Acta Physico-Chimica Sinica, ;2016, 32(8): 2084-2092. doi: 10.3866/PKU.WHXB201605041 shu

Catalytic Combustion of n-Hexanal Using Cu-Mn Composite Oxide Supported on TiO₂

Research Center for Environmental Catalysis & Separation Process, College of Chemical Engineering, Beijing University of Chemical Technology, Beijing 100029, P. R. China

Received Date: 18 February 2016
Revised Date: 18 February 2016

Fund Project: The project was supported by the National Natural Science Foundation of China (21207003) and Beijing Science and Technology Plan of Action for Blue Sky Capital Projects, China (Z141100001014016).

In this study, we regulated copper loading and the atomic ratio of Cu/Mn and investigated the influence on interaction of the active species of Cu-Mn composite oxide catalyst supported on TiO₂ (Cu_xMn_y/ TiO₂). The results indicate that 15% (w, mass fraction) copper loading and a 1 : 1 atomic ratio of Cu/Mn favors formation of analogous Cu-Mn spinel (Cu_1.5Mn_1.5O₄). With increasing loading of copper, oxygen transfers from the lattice oxygen species to defect oxygen. The changes in copper loading and the Cu/Mn atomic ratio have a large influence on the interaction between the active components and the catalytic activity. We found that 90% n-hexanal can be degraded by Cu₁₅Mn₁₅/TiO₂ at 225 ℃ (T₉₀). The excellent performance of Cu₁₅Mn₁₅/TiO₂ is attributed to the higher contents of Cu²⁺ and O_ads, which can achieve a dual redox process with Mn²⁺ in Cu₁₅Mn₁₅/TiO₂. The analogous Cu-Mn spinel active ingredient can maintain high catalytic stability by redox cycles.
- Copper loading capacity,
- Cu/Mn atomic ratio,
- Cu_xMn_y/TiO₂,
- Active component,
- Catalytic oxidation,
- n-Hexanal
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Catalytic Combustion of n-Hexanal Using Cu-Mn Composite Oxide Supported on TiO2

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Catalytic Combustion of n-Hexanal Using Cu-Mn Composite Oxide Supported on TiO₂