Preparation of catalyst as Au doped Mn1Co9Ox/ceramic system for total oxidation of CO

Phuong Pham Thi Mai, Hoan Nguyen Quoc, Quan Do Quoc, Hung Nguyen Thanh

Abstract


In this paper, the Au doped Mn1Co9Ox was investigated for total oxidation of CO. The sol-gel method was applied to prepare this catalyst and some modern analysis methods as XRD, EPR, TPx, SEM were utilized to characterize its properties. The XRD patterns showed only Co3O4 phase without any peaks belonging to Mn or Au. However, the presence of Au and Mn was confirmed by EPR and O2-TPD results. With the aim to further apply catalyst in reality, the Au doped Mn1Co9Ox was deposited on ceramic by sol-gel, wet impregnation. The SEM images displayed the successful coating of active phase on substrate. However, the complete catalyst system didn’t have the high activity in total CO oxidation like the catalyst powder because of large agglomerations on coatings.


Keywords


CO Oxidation; Au doped MnCoOx; Sol-gel; Wet impregnation

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DOI: https://doi.org/10.51316/jca.2021.066

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