Platinum Nanoparticles on Sintered Metal Fibers Are Efficient Structured Catalysts in Partial Methane Oxidation into Synthesis Gas

Andrei Tarasov; Natalia Root; Olga Lebedeva; Dmitry Kultin; Lioubov Kiwi-Minsker; Leonid Kustov

doi:10.1021/acsomega.9b04020

Platinum Nanoparticles on Sintered Metal Fibers Are Efficient Structured Catalysts in Partial Methane Oxidation into Synthesis Gas

ACS Omega. 2020 Mar 6;5(10):5078-5084. doi: 10.1021/acsomega.9b04020. eCollection 2020 Mar 17.

Authors

Andrei Tarasov¹, Natalia Root², Olga Lebedeva², Dmitry Kultin², Lioubov Kiwi-Minsker^{3

4}, Leonid Kustov^{1

2

5}

Affiliations

¹ Zelinsky Institute of Organic Chemistry, Leninsky prospect, 47, 119991 Moscow, Russia.
² Department of Chemistry, Lomonosov Moscow State University, 119991 Moscow, Russia.
³ Ecole Polytechnique Federale, 1015 Lausanne, Switzerland.
⁴ Tver Technical State University, 170026 Tver, Russia.
⁵ Science and Technology University "MISiS", Leninsky prospect, 4, 119049 Moscow, Russia.

Abstract

Efficient structured catalysts of partial methane oxidation into synthesis gas were obtained by electrochemical modification of the surface of sintered FeCrAl alloy fibers in an ionic liquid BMIM-NTf₂ with further introduction of platinum nanoparticles. It was shown that etching and electrochemical modification of sintered FeCrAl alloy fibers result in a decrease of the surface aluminum content. With an increase of the reaction temperature to 900 °C, the methane conversion reaches 90% and the selectivity to CO increases significantly to achieve 98%. The catalysts with a Pt loading of 1 × 10^-4 wt % demonstrate high activity and selectivity as well as TOF in synthesis gas production by the CH₄ + O₂ reaction at 850-900 °C. To trace the composition and structure evolution of the catalysts, XRD and SEM methods were used.