文献类型：期刊文献

英文题名：Microwave-assisted dehydration of strontium hydroxide octahydrate: Experimental study and kinetic modeling analysis

作者：Wang, Wankun Wang, Fuchun

第一作者：Wang, Wankun;王万坤

通信作者：Wang, FC[1];Wang, FC[2]

机构：[1]Jishou Univ, Coll Chem & Chem Engn, Jishou 416000, Peoples R China;[2]Guizhou Inst Technol, Sch Mat & Energy Engn, Guiyang 550003, Peoples R China

第一机构：Jishou Univ, Coll Chem & Chem Engn, Jishou 416000, Peoples R China

通信机构：corresponding author), Jishou Univ, Coll Chem & Chem Engn, Jishou 416000, Peoples R China;corresponding author), Guizhou Inst Technol, Sch Mat & Energy Engn, Guiyang 550003, Peoples R China.|贵州理工学院;

年份：2025

卷号：77

起止页码：207-217

外文期刊名：CHINESE JOURNAL OF CHEMICAL ENGINEERING

收录：;EI(收录号：20245217596161);Scopus(收录号：2-s2.0-85213045933);WOS:【SCI-EXPANDED(收录号:WOS:001460832600001)】；

基金：This work was supported by the Research Program of the Science and Technology Department of Guizhou Province (Qiankehe Jichu [2019]1418), the Research Program of Talented Scholars of Guizhou Institute of Technology (XJGC20190965).

语种：英文

外文关键词：Dehydration; Kinetic; 8H 2 O; Microwave; Response surface methodology

摘要：In this context, the present study proposes the use of microwave irradiation to improve the dehydration rate and efficiency of strontium hydroxide octahydrate (Sr(OH)2.8H2O) without introducing contaminants. This study revealed that the use of microwave irradiation to dehydrate Sr(OH)2.8H2O is feasible and surprisingly efficient. The effects of this approach on important parameters were investigated using response surface methodology (RSM). The results revealed that the microwave dehydration process follows a linear polynomial model. In addition, compared with the heating time and material thickness, the microwave-assisted dehydration of Sr(OH)2.8H2O is sensitive to the microwave power and not to the material mass. The relative dehydration percentage reached 99.99% when heated in a microwave oven at 950 W for just 3 min. In contrast, a relative dehydration percentage of 94.6% was reached when heated in an electric furnace at 180 degrees C for 120 min. The XRD spectra also revealed that most of the Sr(OH)2.8H2O transformed into Sr(OH)2 after dehydration via microwave irradiation, whereas a significant portion of the Sr(OH)2.H2O remained after conventional electric dehydration. The experimental data were fitted and analyzed via the thin-layer drying dynamics model, and the results indicated that the dehydrating behavior of Sr(OH)2.8H2O could be well described by the Page model. (c) 2024 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd. All rights are reserved, including those for text and data mining, AI training, and similar technologies.