Experimental study of volatile organic compounds catalytic combustion on Cu‐Mn catalysts with different carriers,International Journal of Energy Research

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Experimental study of volatile organic compounds catalytic combustion on Cu‐Mn catalysts with different carriers
International Journal of Energy Research ( IF 4.3 ) Pub Date : 2021-01-18 , DOI: 10.1002/er.6411
Mingnv Guo ₁ , Ruiming Fang _{2,

3} , Xianwei Liu _{2,

3} , Zhongqing Yang _{2,

3}

Affiliation

Catalytic combustion is an effective way for volatile organic compounds harmless treatment. In this paper, the synergism between non‐noble metal active phase Cu‐Mn and Y‐zeolite, SiO₂, γ‐Al₂O₃, and TiO₂ was studied by catalytic combustion experiments and corresponding characterizations; the conclusions as following: Cu‐Mn/SiO₂ has the best activity and stability, T₁₀ and T₉₀ are 210°C and 298°C, respectively. Benzene can be completely oxidized below 300°C, which is due to the formation of substantial Cu‐Mn solid solutions and a large number of Cu²⁺/Mn³⁺ ions on the surface of SiO₂. The activation energy of C₆H₆ in CuMn₂/TiO₂ is 95.50 kJ/mol, while that of the other three catalysts is close, probably 60 kJ/mol. Moreover, the stability of SiO₂ is the highest and can be maintained for more than 60 hours. The fundamental reason of catalyst deactivation is the higher diffusion resistance on the surface of the catalyst with small pore size distribution and the lack of surface oxygen, which leads to the lower degree of complete oxidation of C₆H₆.

中文翻译：

不同载体的Cu-Mn催化剂上挥发性有机化合物催化燃烧的实验研究

催化燃烧是挥发性有机化合物无害化处理的有效途径。在本文中，非贵金属活性相的Cu-Mn和Y型沸石，二氧化硅之间的协同作用₂ -Al系γ，₂ ö ₃和TiO ₂，研究了催化燃烧实验和相应表征; 结论如下：Cu-Mn / SiO ₂具有最佳的活性和稳定性，T ₁₀和T ₉₀分别为210°C和298°C。苯在300°C以下可以被完全氧化，这是由于形成了大量的Cu-Mn固溶体以及在SiO ₂表面上形成了大量的Cu ²⁺ / Mn ³⁺离子。CuMn ₂ / TiO ₂中C ₆ H ₆的活化能为95.50 kJ / mol，而其他三种催化剂的活化能相近，约为60 kJ / mol。此外，SiO ₂的稳定性最高，并且可以保持60小时以上。催化剂失活的根本原因是在催化剂表面上具有较高的扩散阻力，且孔径分布较小，并且缺乏表面氧，这导致C ₆ H ₆的完全氧化程度较低。

更新日期：2021-01-18

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