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Experimental study of volatile organic compounds catalytic combustion on Cu‐Mn catalysts with different carriers
Author(s) -
Guo Mingnv,
Fang Ruiming,
Liu Xianwei,
Yang Zhongqing
Publication year - 2021
Publication title -
international journal of energy research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.808
H-Index - 95
eISSN - 1099-114X
pISSN - 0363-907X
DOI - 10.1002/er.6411
Subject(s) - catalysis , chemistry , catalytic combustion , benzene , combustion , zeolite , diffusion , activation energy , copper , oxygen , metal , inorganic chemistry , phase (matter) , chemical engineering , specific surface area , organic chemistry , physics , engineering , thermodynamics
Summary 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, SiO 2 , γ‐Al 2 O 3 , and TiO 2 was studied by catalytic combustion experiments and corresponding characterizations; the conclusions as following: Cu‐Mn/SiO 2 has the best activity and stability, T 10 and T 90 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 Cu 2+ /Mn 3+ ions on the surface of SiO 2 . The activation energy of C 6 H 6 in CuMn 2 /TiO 2 is 95.50 kJ/mol, while that of the other three catalysts is close, probably 60 kJ/mol. Moreover, the stability of SiO 2 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 C 6 H 6 .