Combination of adsorption – desorption with complete oxidation on the MnCoCe oxide based catalyst for toluene treatment

Hung Khong Manh, Nhung Hong Nguyen, Khanh Quoc Ngo, Nam Chu Thi Hai, Thang Minh Le

Abstract


The Adsorption – desorption is considered as one of the most promising VOCs treatment technologies due to its cheap operational cost and low energy consumption. However, there are a huge amount of adsorbed VOCs released in desorption process. That is the reason why this study focused on the combination of adsorption-desorption with catalytic oxidation to treat completely VOCs as toluene. The adsorption catalyst MnCoCe/AC (metal oxide catalyst MnO2-Co3O4-CeO3 on Actived carbon) and oxidation catalyst Au/MnCoCe (Au supported on metal oxide catalyst MnO2-Co3O4-CeO3) were investigated and characterized by SEM - EDX, BET. The catalytic activity test were carried out on a micro-flow reactor system connected with GC online using a TCD detector.The results shown that Au/MnCoCe is a potential catalyst for the complete oxidation of toluene with the temperature for 100% toluene conversion of 300oC. The combination of adsorption-desorption  with catalytic oxidation decreased the temperature for 100% toluene conversion to 250 oC.

Keywords


Toluene; adsorption; oxidation; mixed metal oxides; active carbon; gold

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References


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DOI: https://doi.org/10.51316/jca.2020.077

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