Current State and Problems of Analytical Control of Spent Automobile Catalysts (Review)

Alekseeva, T. Yu.; Karpov, Yu. A.; Dal’nova, O. A.; Es’kina, V. V.; Baranovskaya, V. B.; Горбатова, Л. Д.

doi:10.1134/s0020168518140029

Cited by 13 publications

(1 citation statement)

References 47 publications

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“…Consequently, the exhausted catalyst becomes a waste that is nowadays considered hazardous [8]. The residue is often subject to either pyrometallurgical or hydrometallurgical procedures to extract the most precious components, the noble metals [9][10][11][12][13]. The former has some problems, such as large energy consumption and the production of many harmful gases as well as metallurgical slag [14].…”

Section: Introductionmentioning

confidence: 99%

Valorization of Recycled Honeycombs from Exhausted TWCs by Means of Their Use as a Support of MnOx Catalysts for Acetone Combustion

et al. 2022

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Exhausted TWCs subjected to chemical/thermal treatments were used as a support of MnOx catalysts for the total combustion of acetone. The so-prepared new devices were characterized by using adherence tests, elemental and thermal analyses, XRD, N2 physisorption, and SEM-EDS. Incorporation of only 2.6 wt.% of the active phase (Mn2O3 and Mn3O4) to the recycled honeycomb considerably improved the catalytic response, achieving at 250 °C a 60% increase in acetone conversion with respect to the spent autocatalyst. The following procedure is proposed as a simple way to provide the TWC devoid of noble metals a second life in the VOCs’ oxidation field.

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