N. S. Smirnova, G. N. Baeva, P. V. Markov, I. S. Mashkovsky, A. V. Bukhtiyarov, Ya. V. Zubavichus, A. Yu. Stakheev, “In situ FTIR study of surface site transformations in Pd3In/α-Al2O3 and Pd3Ag/α-Al2O3 induced by CO adsorption”, Mendeleev Commun., 32:6 (2022), 807

Эта публикация цитируется в 11 статьях

Communications

In situ FTIR study of surface site transformations in Pd₃In/α-Al₂O₃ and Pd₃Ag/α-Al₂O₃ induced by CO adsorption

N. S. Smirnova^a, G. N. Baeva^a, P. V. Markov^a, I. S. Mashkovsky^a, A. V. Bukhtiyarov^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

Аннотация: In the course of the treatment of Pd3Ag/α-Al2O3 in 0.5%CO + He at 200 °C, intense transformation of single atom Pd1 surface sites isolated from each other by Ag atoms to multiatomic Pdn (n ≥ 2) ensembles occurs, as revealed by a rapid increase in the intensity of multibonded CO bands in FTIR spectra. The structure of intermetallic Pd3In nanoparticles is significantly more stable, and the formation of new multiatomic adsorption centers was not observed even after extended CO exposures.

Ключевые слова: adsorbate-induced segregation, Pd–Ag solid solution, palladium-based alloy, Pd–In intermetallics, DRIFT spectroscopy, of adsorbed CO.

Язык публикации: английский

DOI: 10.1016/j.mencom.2022.11.033

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