PdIn/Al2O3 Intermetallic Catalyst: Structure and Catalytic Characteristics in Selective Hydrogenation of Acetylene

P. V. Markov, A. V. Bukhtiyarov, I. S. Mashkovsky, N. S. Smirnova, I. P. Prosvirin, Z. S. Vinokurov, M. A. Panafidin, G. N. Baeva, Ya V. Zubavichus, V. I. Bukhtiyarov, A. Yu Stakheev

Результат исследования: Научные публикации в периодических изданияхстатья

Аннотация

The structure and catalytic characteristics of a bimetallic catalyst containing Pd1In1 nanoparticles deposited on the surface of γ-Al2O3 were studied. The formation of intermetallic nanoparticles was determined by X-ray diffraction analysis and confirmed by X-ray photoelectron spectroscopy and IR spectroscopy of adsorbed CO. In the hydrogenation of acetylene in excess ethylene, PdIn/Al2O3 had significantly higher selectivity of ethylene formation (~86%) than monometallic Pd/Al2O3 (~35%). The high selectivity of PdIn/Al2O3 is explained by two factors: (1) the formation of monatomic Pd1 sites isolated from one another by In atoms and (2) the change in the electronic state of Pd atoms in the intermetallic nanoparticles.

Язык оригиналаанглийский
Страницы (с-по)842-850
Число страниц9
ЖурналKinetics and Catalysis
Том60
Номер выпуска6
DOI
СостояниеОпубликовано - 1 ноя 2019

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