P. V. Markov, N. S. Smirnova, G. N. Baeva, I. S. Mashkovsky, A. V. Bukhtiyarov, I. A. Chetyrin, Ya. V. Zubavichus, A. Yu. Stakheev, “Single-atom alloy Pd1Ag10/Al2O3 catalyst: Effect of CO-induced Pd surface segregation on the structure and catalytic performance in the hydrogenation of C2H2”, Mendeleev Commun., 2023, Volume 33, Issue 6,Pages 812

This article is cited in 5 papers

Communications

Single-atom alloy Pd₁Ag₁₀/Al₂O₃ catalyst: Effect of CO-induced Pd surface segregation on the structure and catalytic performance in the hydrogenation of C₂H₂

P. V. Markov^a, N. S. Smirnova^a, G. N. Baeva^a, I. S. Mashkovsky^a, A. V. Bukhtiyarov^b, I. A. Chetyrin^b, Ya. V. Zubavichus^b, A. Yu. Stakheev^a

^a N.D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Moscow, Russian Federation
^b G.K. Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences, Novosibirsk, Russian Federation

Abstract: The effective surface concentration of Pd₁ sites composed of individual palladium atoms isolated from each other by Ag atoms in the Pd₁Ag₁₀/Al₂O₃ single-atom alloy (SAA) catalyst can be significantly enhanced by the adsorption-induced surface segregation upon a special pretreatment of the catalyst in a CO-containing atmosphere at 200 °C. The catalyst activity towards acetylene hydrogenation gets tripled without sacrificing selectivity for ethylene. The segregated surface of the catalyst is thus preserved under target reaction conditions.

Keywords: single-atom alloy catalyst, adsorption-induced segregation, CO adsorption, selective acetylene hydrogenation, Pd, DRIFTS, XPS.

Language: English

DOI: 10.1016/j.mencom.2023.10.024

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