{"title":"通过三维导电胶体电极的高效低温电解实现可持续铁生产","authors":"","doi":"10.1039/d4gc00698d","DOIUrl":null,"url":null,"abstract":"<div><p>Towards decarbonizing the carbothermic reduction of iron and steelmaking, which produces around 5% of global CO<sub>2</sub> emissions, we herein propose a low-temperature electrolysis (100 °C) with 3D electrically–ionically conductive colloidal Fe<sub>2</sub>O<sub>3</sub> electrodes as a novel and sustainable alternative. With the designed electrodes that offer a 3D conductive network to facilitate the electrochemical reduction of Fe<sub>2</sub>O<sub>3</sub> at such a low temperature, high-purity Fe powder (>95%) can be produced with high current efficiency (>95%) and no direct CO<sub>2</sub> emission. In addition to Fe, we also demonstrate the production of metal and alloy powders such as Cu, Ag, and an FeNi alloy using the proposed method. A techno-economic assessment of the process is performed to evaluate industrial feasibility as well as CO<sub>2</sub> emission analysis. Altogether, this alternative process is green, environmentally friendly, and energy efficient, showing great potential for revolutionizing the conventional process that has had a significant environmental impact for decades.</p></div>","PeriodicalId":78,"journal":{"name":"Green Chemistry","volume":null,"pages":null},"PeriodicalIF":9.3000,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://pubs.rsc.org/en/content/articlepdf/2024/gc/d4gc00698d?page=search","citationCount":"0","resultStr":"{\"title\":\"Sustainable iron production via highly efficient low-temperature electrolysis of 3D conductive colloidal electrodes†\",\"authors\":\"\",\"doi\":\"10.1039/d4gc00698d\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Towards decarbonizing the carbothermic reduction of iron and steelmaking, which produces around 5% of global CO<sub>2</sub> emissions, we herein propose a low-temperature electrolysis (100 °C) with 3D electrically–ionically conductive colloidal Fe<sub>2</sub>O<sub>3</sub> electrodes as a novel and sustainable alternative. With the designed electrodes that offer a 3D conductive network to facilitate the electrochemical reduction of Fe<sub>2</sub>O<sub>3</sub> at such a low temperature, high-purity Fe powder (>95%) can be produced with high current efficiency (>95%) and no direct CO<sub>2</sub> emission. In addition to Fe, we also demonstrate the production of metal and alloy powders such as Cu, Ag, and an FeNi alloy using the proposed method. A techno-economic assessment of the process is performed to evaluate industrial feasibility as well as CO<sub>2</sub> emission analysis. Altogether, this alternative process is green, environmentally friendly, and energy efficient, showing great potential for revolutionizing the conventional process that has had a significant environmental impact for decades.</p></div>\",\"PeriodicalId\":78,\"journal\":{\"name\":\"Green Chemistry\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":9.3000,\"publicationDate\":\"2024-08-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://pubs.rsc.org/en/content/articlepdf/2024/gc/d4gc00698d?page=search\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Green Chemistry\",\"FirstCategoryId\":\"92\",\"ListUrlMain\":\"https://www.sciencedirect.com/org/science/article/pii/S1463926224006897\",\"RegionNum\":1,\"RegionCategory\":\"化学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Green Chemistry","FirstCategoryId":"92","ListUrlMain":"https://www.sciencedirect.com/org/science/article/pii/S1463926224006897","RegionNum":1,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Sustainable iron production via highly efficient low-temperature electrolysis of 3D conductive colloidal electrodes†
Towards decarbonizing the carbothermic reduction of iron and steelmaking, which produces around 5% of global CO2 emissions, we herein propose a low-temperature electrolysis (100 °C) with 3D electrically–ionically conductive colloidal Fe2O3 electrodes as a novel and sustainable alternative. With the designed electrodes that offer a 3D conductive network to facilitate the electrochemical reduction of Fe2O3 at such a low temperature, high-purity Fe powder (>95%) can be produced with high current efficiency (>95%) and no direct CO2 emission. In addition to Fe, we also demonstrate the production of metal and alloy powders such as Cu, Ag, and an FeNi alloy using the proposed method. A techno-economic assessment of the process is performed to evaluate industrial feasibility as well as CO2 emission analysis. Altogether, this alternative process is green, environmentally friendly, and energy efficient, showing great potential for revolutionizing the conventional process that has had a significant environmental impact for decades.
期刊介绍：
Green Chemistry is a journal that provides a unique forum for the publication of innovative research on the development of alternative green and sustainable technologies. The scope of Green Chemistry is based on the definition proposed by Anastas and Warner (Green Chemistry: Theory and Practice, P T Anastas and J C Warner, Oxford University Press, Oxford, 1998), which defines green chemistry as the utilisation of a set of principles that reduces or eliminates the use or generation of hazardous substances in the design, manufacture and application of chemical products. Green Chemistry aims to reduce the environmental impact of the chemical enterprise by developing a technology base that is inherently non-toxic to living things and the environment. The journal welcomes submissions on all aspects of research relating to this endeavor and publishes original and significant cutting-edge research that is likely to be of wide general appeal. For a work to be published, it must present a significant advance in green chemistry, including a comparison with existing methods and a demonstration of advantages over those methods.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
