Solid–Solid Catalysis in Sustainable Alloy Synthesis

Solid–Solid Catalysis in Sustainable Alloy Synthesis | 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 Article Solid–Solid Catalysis in Sustainable Alloy Synthesis Dierk Raabe, Xinren Chen, Baptiste Bienvenu, Tingting Yang, Baptiste Gault, and 2 more This is a preprint; it has not been peer reviewed by a journal. https://doi.org/ 10.21203/rs.3.rs-7986257/v1 This work is licensed under a CC BY 4.0 License Status: Under Review Version 1 posted You are reading this latest preprint version Abstract Metal production causes 10% of global greenhouse gas emissions, with most metals extracted from oxide ores via fossil-based pyrometallurgy including melting. Solid-state hydrogen-driven redox reduction is not only a sustainable alternative, but can also be used to integrate reduction, in-situ alloying of mixed oxides, and microstructure design in one step. Upon co-reduction of a Fe2O3–NiO mixture with hydrogen, we find a new type of solid–solid catalytic interaction between pre-reduced metal (Ni) and a transient oxide (FeO). This interaction accelerates hydrogen-based reduction by a factor of two—a remarkable effect given the scale of global metal production at nearly 2 billion tons annually. Specifically, during hydrogen-driven co-reduction of Fe2O3 and NiO, metal partitioning takes place across the metal-oxide interfaces, driven by interface dynamics during which restructuring continuously regenerates catalytic sites that promote H2 spillover. These findings show that hydrogen-based alloy production is not only more sustainable than fossil-based practices but can leverage kinetic and commercial advantages through solid-solid catalytic effects. Physical sciences/Materials science Physical sciences/Chemistry/Green chemistry Full Text Additional Declarations There is NO Competing Interest. Supplementary Files SupplementaryMaterials.pdf Supplementary Materials for Solid–Solid Catalysis in Sustainable Alloy Synthesis Cite Share Download PDF Status: Under Review 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-7986257","acceptedTermsAndConditions":true,"allowDirectSubmit":false,"archivedVersions":[],"articleType":"Article","associatedPublications":[],"authors":[{"id":542801201,"identity":"c93f6e74-e75e-4f8b-a4ad-9e309ca4c714","order_by":0,"name":"Dierk 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