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Article

Dehydrogenation of Ethylene on Supported Palladium Nanoparticles: A Double View from Metal and Hydrocarbon Sides

1
The Smart Materials Research Institute, Southern Federal University, 178/24 Sladkova, 344090 Rostov-on-Don, Russia
2
National Synchrotron Radiation Laboratory, University of Science and Technology of China, Hefei 230029, China
*
Author to whom correspondence should be addressed.
Nanomaterials 2020, 10(9), 1643; https://doi.org/10.3390/nano10091643
Received: 8 July 2020 / Revised: 10 August 2020 / Accepted: 18 August 2020 / Published: 21 August 2020
Adsorption of ethylene on palladium, a key step in various catalytic reactions, may result in a variety of surface-adsorbed species and formation of palladium carbides, especially under industrially relevant pressures and temperatures. Therefore, the application of both surface and bulk sensitive techniques under reaction conditions is important for a comprehensive understanding of ethylene interaction with Pd-catalyst. In this work, we apply in situ X-ray absorption spectroscopy, X-ray diffraction and infrared spectroscopy to follow the evolution of the bulk and surface structure of an industrial catalysts consisting of 2.6 nm supported palladium nanoparticles upon exposure to ethylene under atmospheric pressure at 50 °C. Experimental results were complemented by ab initio simulations of atomic structure, X-ray absorption spectra and vibrational spectra. The adsorbed ethylene was shown to dehydrogenate to C2H3, C2H2 and C2H species, and to finally decompose to palladium carbide. Thus, this study reveals the evolution pathway of ethylene on industrial Pd-catalyst under atmospheric pressure at moderate temperatures, and provides a conceptual framework for the experimental and theoretical investigation of palladium-based systems, in which both surface and bulk structures exhibit a dynamic nature under reaction conditions. View Full-Text
Keywords: palladium nanoparticles; ethylene dehydrogenation; XANES; EXAFS; DRIFTS; DFT palladium nanoparticles; ethylene dehydrogenation; XANES; EXAFS; DRIFTS; DFT
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MDPI and ACS Style

Usoltsev, O.A.; Pnevskaya, A.Y.; Kamyshova, E.G.; Tereshchenko, A.A.; Skorynina, A.A.; Zhang, W.; Yao, T.; Bugaev, A.L.; Soldatov, A.V. Dehydrogenation of Ethylene on Supported Palladium Nanoparticles: A Double View from Metal and Hydrocarbon Sides. Nanomaterials 2020, 10, 1643. https://doi.org/10.3390/nano10091643

AMA Style

Usoltsev OA, Pnevskaya AY, Kamyshova EG, Tereshchenko AA, Skorynina AA, Zhang W, Yao T, Bugaev AL, Soldatov AV. Dehydrogenation of Ethylene on Supported Palladium Nanoparticles: A Double View from Metal and Hydrocarbon Sides. Nanomaterials. 2020; 10(9):1643. https://doi.org/10.3390/nano10091643

Chicago/Turabian Style

Usoltsev, Oleg A., Anna Y. Pnevskaya, Elizaveta G. Kamyshova, Andrei A. Tereshchenko, Alina A. Skorynina, Wei Zhang, Tao Yao, Aram L. Bugaev, and Alexander V. Soldatov 2020. "Dehydrogenation of Ethylene on Supported Palladium Nanoparticles: A Double View from Metal and Hydrocarbon Sides" Nanomaterials 10, no. 9: 1643. https://doi.org/10.3390/nano10091643

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