{
  "abstract": "Reaction OH + HI → I + H2O (1) is an important atmospheric process transforming inactive HI into chemically active iodine atoms. In the present work, the reaction kinetics have been studied in a discharge fast-flow reactor coupled with an electron impact ionization mass spectrometer at nearly 2 Torr total pressure of helium and over a wide temperature range, T = 225–950 K. The reaction rate constant was determined both by a relative rate method (with the OH + Br2 reaction as a reference) and by absolute measurements carried out under pseudo-first order conditions by monitoring the OH consumption kinetics in excess of hydrogen iodide. U-shaped temperature dependence was observed for the reaction rate constant, negative at low temperatures and positive at high temperatures. Recommended expression over the 225–950 K temperature range: k1 = 1.13 × 10−11 exp(354/T) + 6.93 × 10⁻¹¹ exp(−1010/T) cm3 molecule⁻¹ s⁻¹ or in the form of a modified Arrhenius expression, k1 = 4.2 × 10⁻¹² × (T/298)1.36 exp(666/T) cm³ molecule⁻¹ s⁻¹, with a total estimated uncertainty of 15% at all temperatures. The rate constant data obtained in this study are compared with the results of previous experimental works.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 1,
  "authors": [
    {
      "name": "Yuri Bedjanian"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/2cyq2yyfv450w.bib",
  "cited_by": 0,
  "doi": "10.3390/atmos17030301",
  "fulltext_url": null,
  "id": "2cyq2yyfv450w",
  "issns": [
    "2073-4433",
    "2073-4433"
  ],
  "landing_url": "https://cnrs.hal.science/hal-05557785v1",
  "language": "en",
  "licence": "CC-BY-NC-ND-4.0",
  "licence_label": "CC BY-NC-ND 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "hal",
      "0.chim"
    ],
    [
      "hal",
      "0.phys"
    ],
    [
      "hal",
      "1.chim.theo"
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    [
      "hal",
      "1.phys.phys"
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      "hal",
      "2.phys.phys.phys-ao-ph"
    ],
    [
      "openalex",
      "1902|Atmospheric chemistry and aerosols"
    ]
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  "openalex": "W7136752210",
  "pdf_url": "https://cnrs.hal.science/hal-05557785/document",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-07",
  "publisher": "MDPI",
  "ris": "https://research.draconitic.com/paper/2cyq2yyfv450w.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:50Z",
      "native_id": "hal-05557785",
      "source": "hal",
      "url": "https://cnrs.hal.science/hal-05557785v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "hal:1.chim.theo",
      "subfield": "theoretical"
    },
    {
      "field": "earth",
      "origin": "hal:2.phys.phys.phys-ao-ph",
      "subfield": "atmospheric"
    },
    {
      "field": "physics",
      "origin": "hal:0.phys",
      "subfield": "general"
    }
  ],
  "title": "Kinetics of the Reaction of OH Radicals with Hydrogen Iodide Between 225 and 950 K",
  "title_text": "Kinetics of the Reaction of OH Radicals with Hydrogen Iodide Between 225 and 950 K",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:50Z",
  "url": "https://research.draconitic.com/paper/2cyq2yyfv450w",
  "venue": "Atmosphere",
  "versions": []
}