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Various impurities in the emission, such as sulfur dioxide and moisture, readily cause poisoning of the CO oxidation catalysts. Here, a successive phase transition between Pt and Ti domains induced by H2 reduction leads to the formation of unique Pt3Ti intermetallics with significant electron transfer. This catalyst delivers a 96% CO conversion and remains stable for 1000 h at 200 \u00b0C in a simulated sintering flue gas involving SO2, NO, 15% H2O, and 10% O2. The commendable reactivity and stability are ascribed to the sustainability of metallic Pt in Pt3Ti intermetallics under harsh oxidative circumstances. Mechanism studies reveal the well-aligned energy levels between the d-orbitals of metallic Pt with CO orbital facilitate CO oxidation, while suppress the SO2 adsorption and further increases the oxidation barrier, ultimately reduce the sulfates deposition.<\/jats:p>","DOI":"10.1021\/cbe.6c00031","type":"journal-article","created":{"date-parts":[[2026,4,30]],"date-time":"2026-04-30T20:16:53Z","timestamp":1777580213000},"page":"698-712","source":"Crossref","is-referenced-by-count":0,"title":["A Successive Phase Transition\nbetween Pt and Ti Domains\nPromotes Sulfur-Tolerant CO Oxidation in Sintering Flue Gas"],"prefix":"10.1021","volume":"3","author":[{"given":"Jiebing","family":"He","sequence":"first","affiliation":[{"name":"Zhejiang University , , ,","place":["Hangzhou, China, 310058"]},{"name":"Institute of Zhejiang University-Quzhou , ,","place":["Quzhou, China, 324000"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jiaye","family":"Xu","sequence":"additional","affiliation":[{"name":"Zhejiang University , , ,","place":["Hangzhou, China, 310058"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Chunlei","family":"Wei","sequence":"additional","affiliation":[{"name":"Zhejiang University , , ,","place":["Hangzhou, China, 310058"]},{"name":"Institute of Zhejiang University-Quzhou , ,","place":["Quzhou, China, 324000"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mingjia","family":"Zhang","sequence":"additional","affiliation":[{"name":"Zhejiang University , , ,","place":["Hangzhou, China, 310058"]},{"name":"Institute of Zhejiang University-Quzhou , ,","place":["Quzhou, China, 324000"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2761-880X","authenticated-orcid":true,"given":"Lian","family":"Zhang","sequence":"additional","affiliation":[{"name":"Monash University , , , ,","place":["Clayton, Victoria, Australia, 3800"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Mi","family":"Yan","sequence":"additional","affiliation":[{"name":"Baotou Research Institute of Rare Earths , , ,","place":["Baotou, China, 014030"]}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-7644-9934","authenticated-orcid":true,"given":"Pengfei","family":"Xie","sequence":"additional","affiliation":[{"name":"Zhejiang University , , ,","place":["Hangzhou, China, 310058"]},{"name":"Institute of Zhejiang University-Quzhou , ,","place":["Quzhou, China, 324000"]},{"name":"Baotou Research Institute of Rare Earths , , ,","place":["Baotou, China, 014030"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"316","published-online":{"date-parts":[[2026,4,30]]},"reference":[{"key":"2026090114183230500_cit1","doi-asserted-by":"publisher","first-page":"e12","DOI":"10.1016\/S2542-5196(17)30181-X","article-title":"Ambient\ncarbon monoxide and cardiovascular mortality: A nationwide time-series\nanalysis in 272 cities in China","volume":"2","author":"Liu","year":"2018","journal-title":"Lancet Planet.\nHealth"},{"key":"2026090114183230500_cit2","doi-asserted-by":"publisher","first-page":"2038","DOI":"10.1007\/s11426-022-1361-9","article-title":"Kinetically rate-determining step\nmodulation by metal\u2500support interactions for CO oxidation on\nPt\/CeO2","volume":"65","author":"Wang","year":"2022","journal-title":"Sci. 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