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Determine the underlying reaction mechanisms and primary neutral product channels when isolated hydronium and hydroxide ions undergo mutual neutralization at low collision energies.

January 18, 2024Science

The mutual neutralization of hydronium and hydroxide

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Determine the underlying reaction mechanisms and primary neutral product channels when isolated hydronium and hydroxide ions undergo mutual neutralization at low collision energies.
Measured mutual-neutralization reactions of cold, isolated H3O+ and OH- ions using the cryogenic double electrostatic ion-beam storage ring (DESIREE).
Employed three-dimensional coincidence imaging to track neutral product fragments across varied low collision energies and initial ion temperatures.
Identified H2O + OH + H and 2OH + H2 as the predominant product channels, demonstrating that neutralizations occur primarily via an electron-transfer mechanism.
Observed a minor reaction channel producing H2O + H2O with high internal excitation, which proceeds through a direct proton-transfer pathway.

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Implication

Ion-beam experiment reveals electron transfer dominates neutralization in hydronium and hydroxide ions, highlighting benchmarks for charge-transfer modeling.

Cite This Study

Bogot et al. (2024) studied this question.

synapsesocial.com/papers/6aa5f8ba86a9fcb249922c9b https://doi.org/10.1126/science.adk1950

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Implication

Ion-beam experiment reveals electron transfer dominates neutralization in hydronium and hydroxide ions, highlighting benchmarks for charge-transfer modeling.

The mutual neutralization of hydronium and hydroxide

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Discussion

Implication

Cite This Study

The mutual neutralization of hydronium and hydroxide

Key Points

Discussion

Implication

Cite This Study

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