{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,30]],"date-time":"2026-07-30T04:59:54Z","timestamp":1785387594942,"version":"3.55.0"},"reference-count":134,"publisher":"MDPI AG","issue":"15","license":[{"start":{"date-parts":[[2026,7,28]],"date-time":"2026-07-28T00:00:00Z","timestamp":1785196800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Inner Mongolia Autonomous Region Science and Technology Plan Project","award":["2025YFHH0055"],"award-info":[{"award-number":["2025YFHH0055"]}]},{"DOI":"10.13039\/501100004763","name":"Natural Science Foundation of Inner Mongolia Autonomous Region","doi-asserted-by":"crossref","award":["2025YQ016"],"award-info":[{"award-number":["2025YQ016"]}],"id":[{"id":"10.13039\/501100004763","id-type":"DOI","asserted-by":"crossref"}]},{"name":"Central Government Guides Local Science and Technology Development Fund Project","award":["2024ZY0078"],"award-info":[{"award-number":["2024ZY0078"]}]},{"name":"First-Class Discipline of Metallurgical Engineering in Inner Mongolia Autonomous Region","award":["YLXKZX-NKD-006"],"award-info":[{"award-number":["YLXKZX-NKD-006"]}]},{"name":"First-Class Discipline of Metallurgical Engineering in Inner Mongolia Autonomous Region","award":["YLXKZX-NKD-041"],"award-info":[{"award-number":["YLXKZX-NKD-041"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Materials"],"abstract":"<jats:p>Ammonia selective catalytic reduction (NH3-SCR) has become the mainstream core technology for denitrification of industrial sintering flue gas, owing to its high denitrification efficiency and mild reaction conditions. Cerium-based catalysts, with CeO2 as the primary component, have been identified as a promising system for replacing traditional vanadium-based and noble metal catalysts. These catalysts rely on the reversible Ce3+\/Ce4+ redox cycle and exhibit favorable oxygen storage-release capacity derived from lattice oxygen migration. However, the presence of multiple impurities in industrial flue gas can lead to catalyst poisoning and restrict its industrial application. Consequently, there is an urgent need for the development of cerium-based catalysts that exhibit both high denitrification activity and excellent resistance to sulfur, heavy metal and water poisoning for the engineering application of NH3-SCR technology. The present paper undertakes a systematic analysis of the poisoning mechanisms of various pollutants on cerium-based SCR denitrification catalysts. In addition, it discusses the enhancement effects of doping modification with rare earth elements, transition metal elements and non-metallic elements on the sulfur resistance of catalysts. Furthermore, it reveals the intrinsic laws of different modification pathways in improving sulfur resistance by optimizing the electronic structure, regulating surface acidic sites and inducing the formation of oxygen vacancies. The present study provides theoretical support for the design and industrial application of anti-poisoning cerium-based catalysts.<\/jats:p>","DOI":"10.3390\/ma19153223","type":"journal-article","created":{"date-parts":[[2026,7,29]],"date-time":"2026-07-29T08:16:52Z","timestamp":1785313012000},"page":"3223","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Research Progress and Prospects on Poisoning Mechanism and Anti-Poisoning Modification of Cerium-Based NH3-SCR Denitrification Catalysts"],"prefix":"10.3390","volume":"19","author":[{"ORCID":"https:\/\/orcid.org\/0009-0007-2650-5081","authenticated-orcid":false,"given":"Qi","family":"Zhao","sequence":"first","affiliation":[{"name":"School of Rare Earth Industry (School of Rare Earth Engineering and Technology), Inner Mongolia University of Science and Technology, Baotou 014010, China"},{"name":"Engineering Research Center of Carbon Neutrality for Universities of Inner Mongolia Autonomous Region, Baotou 014010, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Zhuoya","family":"Qu","sequence":"additional","affiliation":[{"name":"School of Rare Earth Industry (School of Rare Earth Engineering and Technology), Inner Mongolia University of Science and Technology, Baotou 014010, China"},{"name":"Engineering Research Center of Carbon Neutrality for Universities of Inner Mongolia Autonomous Region, Baotou 014010, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Suqian","family":"Gu","sequence":"additional","affiliation":[{"name":"School of Rare Earth Industry (School of Rare Earth Engineering and Technology), Inner Mongolia University of Science and Technology, Baotou 014010, China"},{"name":"Engineering Research Center of Carbon Neutrality for Universities of Inner Mongolia Autonomous Region, Baotou 014010, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1857-3045","authenticated-orcid":false,"given":"Shengli","family":"An","sequence":"additional","affiliation":[{"name":"School of Rare Earth Industry (School of Rare Earth Engineering and Technology), Inner Mongolia University of Science and Technology, Baotou 014010, China"},{"name":"Engineering Research Center of Carbon Neutrality for Universities of Inner Mongolia Autonomous Region, Baotou 014010, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2016-2061","authenticated-orcid":false,"given":"Shan","family":"Ren","sequence":"additional","affiliation":[{"name":"School of Energy and Power Engineering, Xi\u2019an Jiaotong University, Xi\u2019an 710049, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yifan","family":"Chai","sequence":"additional","affiliation":[{"name":"School of Rare Earth Industry (School of Rare Earth Engineering and Technology), Inner Mongolia University of Science and Technology, Baotou 014010, China"},{"name":"Engineering Research Center of Carbon Neutrality for Universities of Inner Mongolia Autonomous Region, Baotou 014010, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,7,28]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","unstructured":"Lin, D., Zhang, L., Liu, Z., Wang, B., and Han, Y. 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