Isothermal oscillations in surface reactions with coverage independent parameters

Takoudis, Christos G.; Schmidt, L.D.; Aris, Rutherford

doi:10.1016/0009-2509(82)80068-7

Cited by 17 publications

(3 citation statements)

References 25 publications

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“…(76,77,78) Other examples include hydrogen oxidation on Ni, Pd, Pt, and Rh, nitrogen oxide reduction on Pd, Pt, and Rh, and CO hydrogenation on Fe and Pd, among many other passively oscillatory catalytic systems summarized by Schmidt, Schüth, and Henry (79) and Ertl and Imbihl (80) . These dynamic systems exhibit significant complexity such as the emergence of Hopf bifurcations (81,82) , the coexistence of limit cycles and multiple steady states (81,83) , and the possibility for chaotic chemical behavior (84) .…”

Section: Overview Of Chemical Dynamicsmentioning

confidence: 99%

“…Due to the competitive adsorption of CO and oxygen, the metal catalysts transition sharply between two reactive states, a highly active saturated oxygen phase followed by a relatively inactive saturated CO phase. − Other examples include hydrogen oxidation on Ni, Pd, Pt, and Rh, nitrogen oxide reduction on Pd, Pt, and Rh, and CO hydrogenation on Fe and Pd, among many other passively oscillatory catalytic systems summarized by Schmidt, Schüth, and Henry and Ertl and Imbihl . These dynamic systems exhibit significant complexity such as the emergence of Hopf bifurcations, , the coexistence of limit cycles and multiple steady states, , and the possibility for chaotic chemical behavior …”

Section: Overview Of Chemical Dynamicsmentioning

confidence: 99%

“…78−80 Other examples include hydrogen oxidation on Ni, Pd, Pt, and Rh, nitrogen oxide reduction on Pd, Pt, and Rh, and CO hydrogenation on Fe and Pd, among many other passively oscillatory catalytic systems summarized by Schmidt, Schuẗh, and Henry 81 and Ertl and Imbihl. 82 These dynamic systems exhibit significant complexity such as the emergence of Hopf bifurcations, 83,84 the coexistence of limit cycles and multiple steady states, 83,85 and the possibility for chaotic chemical behavior. 86 The complexity of chemical reactor dynamics further increases in response to forced oscillations in pressure, temperature, flow, or composition yielding a periodic, quasiperiodic, or chaotic chemical reactor response.…”

Section: Overview Of Chemical Dynamicsmentioning

confidence: 99%

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The Catalytic Mechanics of Dynamic Surfaces: Stimulating Methods for Promoting Catalytic Resonance

et al. 2020

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Transformational catalytic performance in rate and selectivity is obtainable through catalysts that change on the time scale of catalytic turnover frequency. In this work, dynamic catalysts are defined in the context and history of forced and passive dynamic chemical systems, with classification of unique catalyst behaviors based on temporally-relevant linear scaling parameters. The conditions leading to catalytic rate and selectivity enhancement are described as modifying the local electronic or steric environment of the active site to independently accelerate sequential elementary steps of an overall catalytic cycle. These concepts are related to physical systems and devices that stimulate a catalyst using light, vibrations, strain, and electronic manipulations including electrocatalysis, back-gating of catalyst surfaces, and introduction of surface electric fields via solid electrolytes and ferroelectrics. These catalytic stimuli are then compared for capability to improve catalysis across some of the most important chemical challenges for energy, materials, and sustainability. File list (2) download file view on ChemRxiv Perspective_Manuscript_ChemRxiv.pdf (3.88 MiB) download file view on ChemRxiv Perspective_Supporting_Information_ChemRxiv.pdf (149.75 KiB)

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Section: Overview Of Chemical Dynamicsmentioning

confidence: 99%

Section: Overview Of Chemical Dynamicsmentioning

confidence: 99%

Section: Overview Of Chemical Dynamicsmentioning

confidence: 99%

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The Catalytic Mechanics of Dynamic Surfaces: Stimulating Methods for Promoting Catalytic Resonance

et al. 2020

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A Chemical Mechanism for the Bistable‐to‐Oscillatory Transition in Colloidal Aggregates of Silver Phosphate

Sánchez‐Farrán,

Borhan,

Sen

et al. 2024

ChemSystemsChem

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We previously reported collective behavior in colloidal aggregates of silver phosphate in H2O2 and under UV light. Diffusiophoretic interactions between aggregates lead to non‐linear behavior such as oscillations and synchronization, in which oscillation frequencies increase with H2O2 concentration. The aggregates transition between schooling and dispersed behaviors with incipient spatiotemporal correlations. We identified a kinetic model that maps the chemical species that are thought to underlie non‐linear phenomena in the colloidal aggregates, i.e. adsorbed oxygen species *OOH and ∗O. We investigate the emergent dynamics for the simplest case, the coupling of two otherwise bistable clusters. Two coupling schemes are proposed and we find that – depending on whether the coupling is excitatory or inhibitory – the clusters may oscillate with zero or π phase shift.

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Recent developments in chemical oscillations

Gurel

Gürel

1983

Topics in Current Chemistry

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Isothermal oscillations in surface reactions with coverage independent parameters

Cited by 17 publications

References 25 publications

The Catalytic Mechanics of Dynamic Surfaces: Stimulating Methods for Promoting Catalytic Resonance

The Catalytic Mechanics of Dynamic Surfaces: Stimulating Methods for Promoting Catalytic Resonance

A Chemical Mechanism for the Bistable‐to‐Oscillatory Transition in Colloidal Aggregates of Silver Phosphate

Recent developments in chemical oscillations

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