首页|Constructing Ce-Mn/Al2O3 with different active components for low temperature catalytic degradation of chlorobenzene in soil
Constructing Ce-Mn/Al2O3 with different active components for low temperature catalytic degradation of chlorobenzene in soil
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Soil remediation containing numerous organic contaminants is of great significance to ecological envi-ronment.Herein,the synergetic effects of Ce-Mn/Al2O3 with different active components on catalytic thermal desorption of chlorobenzene in soil were investigated.The optimized Ce-Mn/Al2O3 drastically enhance the desorption efficiency of chlorobenzene,and the corresponding conversion reaches 100％within 1 h at a low temperature of 120 ℃.The superior performance is ascribed to the formation of Ce-Mn solid solution during the calcination process,resulting in a certain lattice change to the gener-ation of abundant oxygen vacancies and acidic sites.Combining with the analysis of in-situ diffuse reflectance infrared spectroscopy and gas chromatography-mass spectrometry,the final products of chlorobenzene are decomposed into CO2,H2O,Cl2 and HCl.This work sheds light on the rational design of highly-active catalysts for practical applications of sustainable soil remediation.
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