{"title":"吸附在用于太阳能储存的木质素化木材中的二元共晶的孔隙特征和导热性能的提高","authors":"Fan Yong, Hua Fei, Yuanlin Li, Yucheng Pan, Jiao Tan, Mengqian Guo","doi":"10.1007/s10853-024-10304-4","DOIUrl":null,"url":null,"abstract":"<div><p>In this work, two binary carbon-based composite phase change materials consisting of paraffin (PW), lauric acid (LA) and tetradecanol (TD) were prepared. Delignified wood flour (DWF) was obtained through treatment with a mixture of NaOH and Na<sub>2</sub>SO<sub>3</sub>. The pore volumes of DWF and wood flour (WF) are 0.01049 and 0.008955 cm<sup>3</sup>/g, respectively, and the pore volume of DWF increased by 17.16%. The adsorption capacity of DWF for LA-PW and LA-TD reaches 50%, which is 10% higher than the adsorption capacity of WF for LA-PW and LA-TD. The thermal conductivities of LA-PW/DWF and LA-TD/DWF are 0.3762 and 0.3580 W/m k, respectively. The phase transition temperatures of LA-PW/DWF and LA-TD/DWF are 40.86 ℃ and 19.68 ℃, respectively. The phase transition latent heat for LA-PW/DWF and LA-TD/DWF is 88.86 J/g and 62.31 J/g, which are 33.61% and 26.18% higher than those of LA-PW/WF and LA-TD/WF, respectively. After 200 cycles, the maximum value of the change rate in phase transition temperature for LA-PW/DWF and LA-TD/DWF is less than 2.64%, and the peak shape remains consistent before and after the cycle, which have good thermal stability.</p><h3>Graphical Abstract</h3><p>The adsorption capacity of DWF obtained by alkali delignification of wood flour was enhanced. LA-PW and LA-TD were uniformly adsorbed in the pore structure of DWF by capillary force and surface tension. LA-PW/DWF and LA-TD/DWF have high phase transition latent heat and good thermal and stability.</p>\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>","PeriodicalId":645,"journal":{"name":"Journal of Materials Science","volume":"59 39","pages":"18579 - 18598"},"PeriodicalIF":3.5000,"publicationDate":"2024-10-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Pore characteristics and thermal conductivity enhancement of binary eutectic adsorbed into delignified wood for solar energy storage\",\"authors\":\"Fan Yong, Hua Fei, Yuanlin Li, Yucheng Pan, Jiao Tan, Mengqian Guo\",\"doi\":\"10.1007/s10853-024-10304-4\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>In this work, two binary carbon-based composite phase change materials consisting of paraffin (PW), lauric acid (LA) and tetradecanol (TD) were prepared. Delignified wood flour (DWF) was obtained through treatment with a mixture of NaOH and Na<sub>2</sub>SO<sub>3</sub>. The pore volumes of DWF and wood flour (WF) are 0.01049 and 0.008955 cm<sup>3</sup>/g, respectively, and the pore volume of DWF increased by 17.16%. The adsorption capacity of DWF for LA-PW and LA-TD reaches 50%, which is 10% higher than the adsorption capacity of WF for LA-PW and LA-TD. The thermal conductivities of LA-PW/DWF and LA-TD/DWF are 0.3762 and 0.3580 W/m k, respectively. The phase transition temperatures of LA-PW/DWF and LA-TD/DWF are 40.86 ℃ and 19.68 ℃, respectively. The phase transition latent heat for LA-PW/DWF and LA-TD/DWF is 88.86 J/g and 62.31 J/g, which are 33.61% and 26.18% higher than those of LA-PW/WF and LA-TD/WF, respectively. After 200 cycles, the maximum value of the change rate in phase transition temperature for LA-PW/DWF and LA-TD/DWF is less than 2.64%, and the peak shape remains consistent before and after the cycle, which have good thermal stability.</p><h3>Graphical Abstract</h3><p>The adsorption capacity of DWF obtained by alkali delignification of wood flour was enhanced. LA-PW and LA-TD were uniformly adsorbed in the pore structure of DWF by capillary force and surface tension. LA-PW/DWF and LA-TD/DWF have high phase transition latent heat and good thermal and stability.</p>\\n<div><figure><div><div><picture><source><img></source></picture></div></div></figure></div></div>\",\"PeriodicalId\":645,\"journal\":{\"name\":\"Journal of Materials Science\",\"volume\":\"59 39\",\"pages\":\"18579 - 18598\"},\"PeriodicalIF\":3.5000,\"publicationDate\":\"2024-10-06\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Journal of Materials Science\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://link.springer.com/article/10.1007/s10853-024-10304-4\",\"RegionNum\":3,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"MATERIALS SCIENCE, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Materials Science","FirstCategoryId":"88","ListUrlMain":"https://link.springer.com/article/10.1007/s10853-024-10304-4","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
Pore characteristics and thermal conductivity enhancement of binary eutectic adsorbed into delignified wood for solar energy storage
In this work, two binary carbon-based composite phase change materials consisting of paraffin (PW), lauric acid (LA) and tetradecanol (TD) were prepared. Delignified wood flour (DWF) was obtained through treatment with a mixture of NaOH and Na2SO3. The pore volumes of DWF and wood flour (WF) are 0.01049 and 0.008955 cm3/g, respectively, and the pore volume of DWF increased by 17.16%. The adsorption capacity of DWF for LA-PW and LA-TD reaches 50%, which is 10% higher than the adsorption capacity of WF for LA-PW and LA-TD. The thermal conductivities of LA-PW/DWF and LA-TD/DWF are 0.3762 and 0.3580 W/m k, respectively. The phase transition temperatures of LA-PW/DWF and LA-TD/DWF are 40.86 ℃ and 19.68 ℃, respectively. The phase transition latent heat for LA-PW/DWF and LA-TD/DWF is 88.86 J/g and 62.31 J/g, which are 33.61% and 26.18% higher than those of LA-PW/WF and LA-TD/WF, respectively. After 200 cycles, the maximum value of the change rate in phase transition temperature for LA-PW/DWF and LA-TD/DWF is less than 2.64%, and the peak shape remains consistent before and after the cycle, which have good thermal stability.
Graphical Abstract
The adsorption capacity of DWF obtained by alkali delignification of wood flour was enhanced. LA-PW and LA-TD were uniformly adsorbed in the pore structure of DWF by capillary force and surface tension. LA-PW/DWF and LA-TD/DWF have high phase transition latent heat and good thermal and stability.
期刊介绍：
The Journal of Materials Science publishes reviews, full-length papers, and short Communications recording original research results on, or techniques for studying the relationship between structure, properties, and uses of materials. The subjects are seen from international and interdisciplinary perspectives covering areas including metals, ceramics, glasses, polymers, electrical materials, composite materials, fibers, nanostructured materials, nanocomposites, and biological and biomedical materials. The Journal of Materials Science is now firmly established as the leading source of primary communication for scientists investigating the structure and properties of all engineering materials.
京公网安备 11010802042870号
京ICP备2023020795号-1
分享
求助内容：
应助结果提醒方式：
扫码关注我们
