Abstract: In this work, we discuss the problem of the afterburning of methane from the exhaust gases of automobile engines fueled by natural gas. In exhaust neutralizers, the PdO/Al2O3 catalyst, the main drawback of which is the reduction of its activity under the action of steam that always present in exhaust gases, is commonly used. To improve the tolerance to steam, a series of PdO-Me x O y /Al2O3 binary catalysts (Me is Co, Cu, Fe, Ni, Mn, or Sn) was prepared and studied. Comparative tests under conditions modeling the methane afterburning process in automobile neutralizers show that Pd catalysts promoted with nickel, cobalt, and tin oxides are more resistant to the inhibiting action of steam. The high crystallinity of supported PdO and its uniform distribution over the surface of modified Al2O3 are indicated as criteria for the stability of catalysts in the presence of steam. Optimization of the concentration of promotors and the preparation method used for their introduction allows the deactivation of Pd catalysts under the action of steam to be almost completely eliminated.

Cite: Mashkovtsev M.A. , Khudorozhkov A.K. , Beck I.E. , Porsin A.V. , Prosvirin I.P. , Rychkov V.N. , Bukhtiyarov V.I.
Selection of Modifying Additives for Improving the Steam Tolerance of Methane Afterburning Palladium Catalysts
Catalysis in Industry. 2011. V.3. N4. P.350-357. DOI: 10.1134/S2070050411040052 WOS Scopus РИНЦ OpenAlex

Original: Машковцев М.А. , Худорожков А.К. , Бекк И.Э. , Порсин А.В. , Просвирин И.П. , Рычков В.Н. , Бухтияров В.И.
Подбор модифицирующих добавок для повышения устойчивости Pd-катализаторов дожигания метана к водяным парам
Катализ в промышленности. 2011. №4. С.63-71. RSCI РИНЦ ANCAN

Dates:

Published print:	Dec 1, 2011
Published online:	Dec 28, 2011

Identifiers:

Web of science:	WOS:000433659700003
Scopus:	2-s2.0-84857318290
Elibrary:	18035404
OpenAlex:	W2025830922

Citing:

DB	Citing
Scopus	5
Elibrary	6
OpenAlex	5
Web of science	5

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