{"title":"Enhanced properties of stone coal-based composite phase change materials for thermal energy storage","authors":"","doi":"10.1007/s12613-023-2682-x","DOIUrl":null,"url":null,"abstract":"<h3>Abstract</h3> <p>Phase change materials (PCMs) can be incorporated with low-cost minerals to synthesize composites for thermal energy storage in building applications. Stone coal (SC) after vanadium extraction treatment shows potential for secondary utilization in composite preparation. We prepared SC-based composite PCMs with SC as a matrix, stearic acid (SA) as a PCM, and expanded graphite (EG) as an additive. The combined roasting and acid leaching treatment of raw SC was conducted to understand the effect of vanadium extraction on promoting loading capacity. Results showed that the combined treatment of roasting at 900°C and leaching increased the SC loading of the composite by 6.2% by improving the specific surface area. The loading capacity and thermal conductivity of the composite obviously increased by 127% and 48.19%, respectively, due to the contribution of 3wt% EG. These data were supported by the high load of 66.69% and thermal conductivity of 0.59 W·m<sup>−1</sup>·K<sup>−1</sup> of the designed composite. The obtained composite exhibited a phase change temperature of 52.17°C, melting latent heat of 121.5 J·g<sup>−1</sup>, and good chemical compatibility. The SC-based composite has prospects in building applications exploiting the secondary utilization of minerals.</p>","PeriodicalId":14030,"journal":{"name":"International Journal of Minerals, Metallurgy, and Materials","volume":"71 1","pages":""},"PeriodicalIF":5.6000,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Minerals, Metallurgy, and Materials","FirstCategoryId":"5","ListUrlMain":"https://doi.org/10.1007/s12613-023-2682-x","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Phase change materials (PCMs) can be incorporated with low-cost minerals to synthesize composites for thermal energy storage in building applications. Stone coal (SC) after vanadium extraction treatment shows potential for secondary utilization in composite preparation. We prepared SC-based composite PCMs with SC as a matrix, stearic acid (SA) as a PCM, and expanded graphite (EG) as an additive. The combined roasting and acid leaching treatment of raw SC was conducted to understand the effect of vanadium extraction on promoting loading capacity. Results showed that the combined treatment of roasting at 900°C and leaching increased the SC loading of the composite by 6.2% by improving the specific surface area. The loading capacity and thermal conductivity of the composite obviously increased by 127% and 48.19%, respectively, due to the contribution of 3wt% EG. These data were supported by the high load of 66.69% and thermal conductivity of 0.59 W·m−1·K−1 of the designed composite. The obtained composite exhibited a phase change temperature of 52.17°C, melting latent heat of 121.5 J·g−1, and good chemical compatibility. The SC-based composite has prospects in building applications exploiting the secondary utilization of minerals.
期刊介绍：
International Journal of Minerals, Metallurgy and Materials (Formerly known as Journal of University of Science and Technology Beijing, Mineral, Metallurgy, Material) provides an international medium for the publication of theoretical and experimental studies related to the fields of Minerals, Metallurgy and Materials. Papers dealing with minerals processing, mining, mine safety, environmental pollution and protection of mines, process metallurgy, metallurgical physical chemistry, structure and physical properties of materials, corrosion and resistance of materials, are viewed as suitable for publication.
求助内容：
应助结果提醒方式：
京公网安备 11010802042870号
