CO₂/O₂ Exchange in Magnesium-Water Clusters Mg⁺(H₂O) _n.

ABSTRACT: Hydrated singly charged metal ions doped with carbon dioxide, Mg²⁺(CO₂)^-(H₂O) _n, in the gas phase are valuable model systems for the electrochemical activation of CO₂. Here, we study these systems by Fourier transform ion cyclotron resonance (FT-ICR) mass spectrometry combined with ab initio calculations. We show that the exchange reaction of CO₂ with O₂ proceeds fast with bare Mg⁺(CO₂), with a rate coefficient k_abs = 1.2 × 10^-10 cm³ s^-1, while hydrated species exhibit a lower rate in the range of k_abs = (1.2-2.4) × 10^-11 cm³ s^-1 for this strongly exothermic reaction. Water makes the exchange re

SUBMITTER: Barwa E 

PROVIDER: S-EPMC6331139 | biostudies-literature | 2019 Jan

REPOSITORIES: biostudies-literature