{
  "abstract": "The selective conversion of nitric oxide (NO) in combustion flue gases to ammonia (NH 3 ) is a promising strategy for sustainable nitrogen management. However, this conversion remains challenging in O 2 -containing exhaust gases because coexisting O 2 strongly inhibits catalytic hydrogenation. Here, we developed a tandem NO capture and hydrogenation system for NH 3 production from O 2 -containing streams. Various adsorbents were examined for NO capture in the presence of O 2 , and Li-impregnated β zeolite with 1.2 wt% Li, denoted as Li(1.2)/β, was selected as a representative adsorbent owing to its high NO x adsorption capacity. In situ IR spectroscopy showed that NO x species formed from NO + O 2 on Li(1.2)/β were mainly present as [NO + ][NO 2 ] adducts, which subsequently desorbed as NO 2 upon heating. By coupling the Li(1.2)/β-based temperature-swing adsorption unit, operated between 30 and 200 °C, with a downstream Cu(5)/CeO 2 hydrogenation reactor operated at 450 °C, the tandem system maintained an NH 3 yield of 55–60% during a 7 h cyclic operation. These results demonstrate the feasibility of spatially separated NO capture and downstream NO x hydrogenation for converting NO in O 2 -containing streams into a valuable nitrogen resource.",
  "abstract_shown": true,
  "affiliations": [
    "Institute for Catalysis, Hokkaido University, N-21, W-10, Sapporo, Japan, 001-0021",
    "SEP Key Laboratory of Eco-industry, School of Resources and Civil Engineering",
    "Northeastern University"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 10,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Akihiko Anzai",
      "orcid": "0000-0002-8118-407X"
    },
    {
      "affs": [
        0
      ],
      "name": "Hsu Sheng Feng"
    },
    {
      "affs": [
        0
      ],
      "name": "Xiupeng Zhang"
    },
    {
      "affs": [
        0
      ],
      "name": "Shinta Miyazaki"
    },
    {
      "affs": [
        0
      ],
      "name": "Masaki Yoshihara"
    },
    {
      "affs": [
        0,
        1,
        2
      ],
      "name": "Ninqiang Zhang"
    },
    {
      "affs": [
        0
      ],
      "name": "Junxian Qin"
    },
    {
      "affs": [
        0
      ],
      "name": "Chenxi He"
    },
    {
      "affs": [
        0
      ],
      "name": "Takashi Toyao"
    },
    {
      "affs": [
        0
      ],
      "name": "Ken-ichi Shimizu"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/eh6gps3bqqxc6.bib",
  "cited_by": 0,
  "doi": "10.26434/chemrxiv.15010762/v1",
  "fulltext_url": null,
  "id": "eh6gps3bqqxc6",
  "issns": [],
  "landing_url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15010762/v1",
  "language": null,
  "licence": "CC-BY-NC-ND",
  "licence_label": "CC BY-NC-ND",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by-nc-nd/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "1503|Ammonia Synthesis and Nitrogen Reduction"
    ]
  ],
  "openalex": "W7223152340",
  "pdf_url": "https://chemrxiv.org/doi/pdf/10.26434/chemrxiv.15010762/v1",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-21",
  "publisher": "American Chemical Society (ACS)",
  "ris": "https://research.draconitic.com/paper/eh6gps3bqqxc6.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:24Z",
      "native_id": "10.26434/chemrxiv.15010762",
      "source": "chemrxiv",
      "url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15010762/v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:1503|Ammonia Synthesis and Nitrogen Reduction",
      "subfield": "catalysis"
    }
  ],
  "title": "Spatially Separated NO Capture and Hydrogenation for NH ₃ Synthesis from O ₂ -Containing Streams",
  "title_text": "Spatially Separated NO Capture and Hydrogenation for NH ₃ Synthesis from O ₂ -Containing Streams",
  "type": "preprint",
  "updated_at": "2026-10-30T12:17:24Z",
  "url": "https://research.draconitic.com/paper/eh6gps3bqqxc6",
  "venue": "ChemRxiv",
  "versions": []
}