VIBRATIONAL RESONANCE DURING CO-OXIDATION ON PLATINUM CATALYST SURFACES

Authors

DOI:

https://doi.org/10.15421/jchemtech.v33i1.303777

Keywords:

Co-oxidation, Platinum catalyst, Vibrational resonance, Chaotic oscillation, Response amplitude, Perturbation

Abstract

Vibrational resonance is a nonlinear phenomenon in which two external signals, a low-frequency signal (ω) and a high-frequency signal (Ω), interact cooperatively, with Ω significantly larger than ω. This interaction strengthens the response of the weaker, low-frequency signal. In this paper, we investigate the application of vibrational resonance in a surface catalytic reaction model, specifically focusing on the oxidation of Carbon Monoxide (CO) on a platinum catalyst. By performing numerical simulations, we examine how the introduction of a low-frequency periodic signal superimposed on a high-frequency signal affects the catalytic reaction dynamics. The results reveal that vibrational resonance reduces the energy barrier for CO oxidation, which leads to enhanced reaction rates compared to conditions without resonance. This effect occurs due to the optimal synchronization of the two frequencies, which facilitates more efficient energy transfer and reaction processes. Ultimately, this research demonstrates that vibrational resonance can significantly improve catalytic activity in CO oxidation reactions, offering insights into optimizing catalytic performance.

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Published

2025-04-15

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Industrial gases. Chemical engineering