A Systematic Investigation into the Influence of Zeolite Framework Differences on the Catalytic Performance of Copper Sites in Ammonia Oxidation

A Systematic Investigation into the Influence of Zeolite Framework Differences on the Catalytic Performance of Copper Sites in Ammonia Oxidation | Research Square window.SnipcartSettings = { analytics: { enabled: false } }; (function() { var accessVector = localStorage.getItem('access_vector') || ''; window.dataLayer = window.dataLayer || []; if (accessVector) { window.dataLayer.push({ user: { profile: { profileInfo: { snid: accessVector } } } }); } })(); (function(w,d,s,l,i){w[l]=w[l]||[];w[l].push({'gtm.start':new Date().getTime(),event:'gtm.js'});var f=d.getElementsByTagName(s)[0],j=d.createElement(s),dl=l!='dataLayer'?'&l='+l:'';j.async=true;j.src='https://www.googletagmanager.com/gtm.js?id='+i+dl;f.parentNode.insertBefore(j,f);})(window,document,'script','dataLayer','GTM-K279D39R'); Browse Preprints In Review Journals COVID-19 Preprints AJE Video Bytes Research Tools Research Promotion AJE Professional Editing AJE Rubriq About Preprint Platform In Review Editorial Policies Our Team Advisory Board Help Center Sign In Submit a Preprint Cite Share Download PDF Research Article A Systematic Investigation into the Influence of Zeolite Framework Differences on the Catalytic Performance of Copper Sites in Ammonia Oxidation Sisi Deng, Fuming Liu, Shuqing Deng, Ruifeng Miao, Changqiu Chen This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-9269738/v1 This work is licensed under a CC BY 4.0 License Status: Posted Version 1 posted You are reading this latest preprint version Abstract The ammonia adsorption and desorption properties of copper-exchanged zeolites with distinct pore structures (i.e., Cu/BETA, Cu/ZSM-5, and Cu/SSZ-13) were systematically investigated under simulated engine conditions, focusing on their capacity for ammonia capture, release efficiency, and thermal stability. Among the tested catalysts, copper-exchanged SSZ-13 zeolite (Cu/SSZ-13) exhibited superior performance, attributed to its small-pore architecture, high surface area, and optimized copper ion distribution within the SSZ-13 framework. Notably, Cu/SSZ-13 demonstrated enhanced ammonia adsorption and desorption efficiencies compared to the large-pore Cu/BETA and medium-pore Cu/ZSM-5. Furthermore, Cu/SSZ-13 displayed exceptional thermal stability, a critical requirement for withstanding the fluctuating temperatures encountered in internal combustion engine operations. These findings suggest that the structural and chemical properties of the zeolite support, particularly in Cu/SSZ-13, play a decisive role in ammonia management. The study highlights the potential of Cu/SSZ-13 as an effective catalyst for mitigating ammonia emissions in engine exhaust systems, thereby supporting the adoption of ammonia as a cleaner alternative fuel. Future research will focus on optimizing catalyst formulations, evaluating long-term stability under realistic conditions, and integrating these materials into practical engine designs to maximize environmental benefits. Ammonia-fueled Engines Zeolite Catalysts Ammonia Treatment Cu/SSZ-13 Full Text Additional Declarations No competing interests reported. Supplementary Files SI.docx Cite Share Download PDF Status: Posted Version 1 posted You are reading this latest preprint version Research Square lets you share your work early, gain feedback from the community, and start making changes to your manuscript prior to peer review in a journal. As a division of Research Square Company, we’re committed to making research communication faster, fairer, and more useful. We do this by developing innovative software and high quality services for the global research community. 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Also discoverable on Platform About Our Team In Review Editorial Policies Advisory Board Help Center Resources Author Services Accessibility API Access RSS feed Manage Cookie Preferences © Research Square 2026 | ISSN 2693-5015 (online) Privacy Policy Terms of Service Do Not Sell My Personal Information {"props":{"pageProps":{"initialData":{"identity":"rs-9269738","acceptedTermsAndConditions":true,"allowDirectSubmit":true,"archivedVersions":[],"articleType":"Research Article","associatedPublications":[],"authors":[{"id":620186704,"identity":"977c3507-4b01-4009-8fed-c47c4e298c7b","order_by":0,"name":"Sisi 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