[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"detail-sidebar-cat-0-en-105":3,"doc-seo-450325-105":59,"doc-detail-450325-en":130},{"code":4,"msg":5,"data":6},0,"success",[7,13,18,23,28,33,38,43,48,51,55],{"id":8,"doc_module":4,"doc_module_name":9,"category_name":10,"show_sort_weight":11,"slug":12},1,"Document","Story & Novel",90,"story-novel",{"id":14,"doc_module":4,"doc_module_name":9,"category_name":15,"show_sort_weight":16,"slug":17},2,"Literature",80,"literature",{"id":19,"doc_module":4,"doc_module_name":9,"category_name":20,"show_sort_weight":21,"slug":22},4,"Exam",70,"exam",{"id":24,"doc_module":4,"doc_module_name":9,"category_name":25,"show_sort_weight":26,"slug":27},5,"Comic",60,"comic",{"id":29,"doc_module":4,"doc_module_name":9,"category_name":30,"show_sort_weight":31,"slug":32},6,"Technology",50,"technology",{"id":34,"doc_module":4,"doc_module_name":9,"category_name":35,"show_sort_weight":36,"slug":37},7,"Healthcare",40,"healthcare",{"id":39,"doc_module":4,"doc_module_name":9,"category_name":40,"show_sort_weight":41,"slug":42},8,"Research & Report",30,"research-report",{"id":44,"doc_module":4,"doc_module_name":9,"category_name":45,"show_sort_weight":46,"slug":47},9,"Religion & Spirituality",20,"religion-spirituality",{"id":46,"doc_module":4,"doc_module_name":9,"category_name":49,"show_sort_weight":46,"slug":50},"World Cup","world-cup",{"id":52,"doc_module":4,"doc_module_name":9,"category_name":53,"show_sort_weight":52,"slug":54},10,"Lifestyle","lifestyle",{"id":56,"doc_module":4,"doc_module_name":9,"category_name":57,"show_sort_weight":24,"slug":58},19,"General","general",{"code":4,"msg":60,"data":61},"ok",{"site_id":62,"language":63,"slug":64,"title":65,"keywords":66,"description":67,"schema_data":68,"social_meta":123,"head_meta":125,"extra_data":127,"updated_unix":129},105,"en","sustainable-alkane-production-from-waste-fatty-acids-via-electrochemically-coupled-decarboxylation-and-hydrogenation","Sustainable alkane production from waste fatty acids via electrochemically coupled decarboxylation and hydrogenation","","Sustainable diesel and jet-fuel pathways that upgrade fatty acid derivatives often rely on high temperature, pressure, and large H₂ inputs, while contaminants in waste oils deactivate catalysts and increase purification cost. This work presents an integrated electrochemical strategy combining anodic decarboxylation, cathodic proton reduction, and olefin hydrogenation in one reactor. Under mild conditions (60 °C, 1 atm) without external hydrogen, an 88.9% alkane yield is achieved. Chain length controls yield and selectivity through effects on –H departure and Cγ–Cβ–COOH bond-cleavage barriers, enabling diverse feedstocks including waste oils. Solar-powered operation in a 1 L reactor yields ~40 g long-chain alkanes, supporting scalable green fuel synthesis.",{"@graph":69,"@context":122},[70,84,105],{"@type":71,"itemListElement":72},"BreadcrumbList",[73,77,79,82],{"item":74,"name":75,"@type":76,"position":8},"https://docshare.wps.com","Home","ListItem",{"item":78,"name":9,"@type":76,"position":14},"https://docshare.wps.com/document/",{"item":80,"name":40,"@type":76,"position":81},"https://docshare.wps.com/document/research-report/",3,{"item":83,"name":65,"@type":76,"position":19},"https://docshare.wps.com/document/sustainable-alkane-production-from-waste-fatty-acids-via-electrochemically-coupled-decarboxylation-and-hydrogenation/450325/",{"url":83,"name":65,"@type":85,"image":86,"author":91,"headline":65,"publisher":94,"fileFormat":97,"inLanguage":63,"description":67,"dateModified":98,"datePublished":99,"encodingFormat":97,"isAccessibleForFree":100,"interactionStatistic":101},"DigitalDocument",{"url":87,"@type":88,"width":89,"height":90},"https://docshare.wps.com/thumbnails/sustainable-alkane-production-from-waste-fatty-acids-via-electrochemically-coupled-decarboxylation-and-hydrogenation/450325.png","ImageObject",300,407,{"name":92,"@type":93},"Valentina","Person",{"url":74,"name":95,"@type":96},"DocShare","Organization","application/pdf","2026-10-05","2026-09-30",true,{"@type":102,"interactionType":103,"userInteractionCount":29},"InteractionCounter",{"@type":104},"ViewAction",{"@type":106,"mainEntity":107},"FAQPage",[108,114,118],{"name":109,"@type":110,"acceptedAnswer":111},"What electrochemical process is used to convert waste fatty acids into long-chain alkanes?","Question",{"text":112,"@type":113},"An integrated one-reactor approach couples anodic decarboxylation with cathodic proton reduction and olefin hydrogenation, converting fatty acid derivatives to long-chain alkanes under mild conditions.","Answer",{"name":115,"@type":110,"acceptedAnswer":116},"How does the method avoid using external fossil-fuel-derived hydrogen?",{"text":117,"@type":113},"Hydrogen species are generated at the cathode within the electrochemical system and are used directly for olefin hydrogenation, eliminating the need for external hydrogen input.",{"name":119,"@type":110,"acceptedAnswer":120},"Why does fatty-acid chain length matter in the product distribution?",{"text":121,"@type":113},"Experiments and calculations indicate that chain length governs yield and selectivity by influencing key energy barriers related to –H departure and the Cγ–Cβ–COOH bond cleavage.","https://schema.org",{"og:url":83,"og:type":124,"og:title":65,"og:site_name":95,"og:description":67},"article",{"robots":126,"canonical":83},"index,follow",{"doc_id":128,"site_id":62},450325,1790803770,{"code":4,"msg":5,"data":131},{"doc_id":128,"user_id":132,"nickname":92,"user_avatar":133,"doc_module":4,"category_id":39,"category_name":40,"doc_title":65,"doc_description":67,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":29,"is_deleted":4,"is_public":8,"is_downloadable":8,"audit_status":8,"page_count":139,"language":140,"language_code":63,"site_id":62,"html_lang":63,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":67,"update_tm":144,"read_time":145},13056703020460,"https://ap-avatar.wpscdn.com/avatar/be000253dac470eee5d?_k=1778207105932848923","Article [https://doi.org/10.1038/s41467-025-66858-7](https://doi.org/10.1038/s41467-025-66858-7)  \nSustainable alkane production from waste fatty acids via electrochemically coupled decarboxylation and hydrogenation  \nReceived: 16 March 2025  \n\n| Accepted: 18 November 2025 |\n| --- |\n| |\n| Check for updates |\n\nWeiqin Wei1, Zhen Wei 2 , Xiaoli Luo3, Hong Yuan3, Qingqing Zhou1, Xiao Ren 1 , Shuxin Ouyang 3 , Tierui Zhang 4 & Ding Ma 1   \nUpgrading fatty acid derivatives is a promising route to sustainable diesel and jet fuels, but conventional processes require high temperature, pressure, and large H₂ input, while contaminants in waste oil deactivate catalysts, demanding costly purification. Here, we present an integrated electrochemical strategy combining anodic decarboxylation, cathodic proton reduction, and olefin hydrogenation in one reactor, upgrading fatty acid derivatives to long-chain alkanes under mild conditions (60 °C, 1 atm) without external hydrogen. A high alkane yield of 88.9% is achieved and the reported performance is competitive. Experiments and calculations reveal that fatty acid chain length governs product yield and distribution by influencing –H departure and Cγ–Cβ–COOH bond cleavage barriers. This approach shows high activity and selectivity toward diverse feedstocks, including unsaturated fatty acids, esters, mixtures, crude acids, and waste oils. Powered by solar energy, approximately 40 g of long-chain alkanes are produced in a 1 L reactor, highlighting its scalability and potential for green fuel synthesis.  \nLong-chain hydrocarbons, including long-chain alkanes used as diesel and jet fuels, as well as long-chain olefins employed as chemical intermediates, are extensively utilized. Currently, large-scale production of long-chain hydrocarbons primarily relies on petroleum refining, which consumes a significant amount of electricity and emits substantial amounts of toxic and greenhouse gases1–4. Additionally, the resulting products often contain high levels of sulfur and harmful polycyclic aromatic hydrocarbons, failing to meet with the stringent international environmental and safety standards5–7. Therefore, developing high-yield, mild, and environmentally friendly synthetic routes for long-chain alkanes has become a priority.  \nFatty acids (CxHyCOOH), derived primarily from edible oils, represent valuable feedstock for synthesizing long-chain hydrocarbons due to their structural similarity with –CHx– unit8–11. In contrast to edible oils, non-edible oils are more cost-effective as they do not encroach upon food resources, thus avoiding competition with the food industry for raw materials. Annually, factories and catering services generate thousands of tons of waste oils, rich in fatty acids and their derivatives, highlighting a significant source of potential raw materials for sustainable energy solutions12. Typically, waste oil undergoes some treatment processes such as anaerobic digestion, aerobic treatment, and co-incineration, which can nonetheless give rise to considerable environmental concerns. Besides, waste oil can be  \n1Beijing National Laboratory for Molecular Engineering, New Cornerstone Science Laboratory, College of Chemistry and Molecular Engineering, Peking University, Beijing, China. 2Beijing Key Laboratory for Green Catalysis and Separation, Key Laboratory of Advanced Functional Materials, Education Ministry of China, College of Materials Science and Engineering, Beijing University of Technology, Beijing, China. 3Engineering Research Center of Photoenergy Utilization for Pollution Control and Carbon Reduction, Ministry of Education; Key Laboratory of Pesticide and Chemical Biology of Ministry of Education, College of Chemistry, Central China Normal University, Wuhan, China. 4Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing, China. e-mail: [xfwz522@126.com](xfwz522@126.com); [renxiao_@pku.","cbCaijvaTRTVVvFP","https://ap.wps.com/l/cbCaijvaTRTVVvFP","pdf",1644210,11,"English","# Introduction\n## Motivation for sustainable long-chain hydrocarbon synthesis\n## Role of fatty acids and waste oils\n## Limitations of conventional HEFA and hydrogen-dependent methods\n# Integrated electrochemical strategy\n## Concept: anodic decarboxylation and cathodic hydrogenation\n## Target: high-yield alkane production without external H₂\n# Results and mechanism\n## Mild operating conditions and alkane yield\n## Chain-length effects on yield and product distribution\n## Performance with diverse feedstocks\n# Scalability and green fuel potential\n## Solar-powered production in a 1 L reactor","[{\"question\":\"What electrochemical process is used to convert waste fatty acids into long-chain alkanes?\",\"answer\":\"An integrated one-reactor approach couples anodic decarboxylation with cathodic proton reduction and olefin hydrogenation, converting fatty acid derivatives to long-chain alkanes under mild conditions.\"},{\"question\":\"How does the method avoid using external fossil-fuel-derived hydrogen?\",\"answer\":\"Hydrogen species are generated at the cathode within the electrochemical system and are used directly for olefin hydrogenation, eliminating the need for external hydrogen input.\"},{\"question\":\"Why does fatty-acid chain length matter in the product distribution?\",\"answer\":\"Experiments and calculations indicate that chain length governs yield and selectivity by influencing key energy barriers related to –H departure and the Cγ–Cβ–COOH bond cleavage.\"}]","Sustainable alkane production from waste fatty acids via electrochemically coupled decarboxylation and hydrogenation | PDF",1790732897,28]