文献类型：期刊文献

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

作者：Wankun Wang Fuchun Wang

第一作者：Wankun Wang;王万坤

机构：[1]College of Chemistry and Chemical Engineering,Jishou University,Jishou 416000,China;[2]School of Materials and Energy Engineering,Guizhou Institute of Technology,Guiyang 550003,China

第一机构：College of Chemistry and Chemical Engineering,Jishou University,Jishou 416000,China

年份：2025

卷号：77

期号：1

起止页码：207-217

中文期刊名：Chinese Journal of Chemical Engineering

外文期刊名：中国化学工程学报(英文版)

基金：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

中文关键词：Dehydration;Kinetic;Sr(OH)_(2);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)·8H_(2)O)without introducing contaminants.This study revealed that the use of microwave irradiation to dehydrate Sr(OH)_(2)·8H_(2)O 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)·8H_(2)O 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 950Wfor just 3 min.In contrast,a relative dehydration percentage of 94.6%was reached when heated in an electric furnace at 180℃for 120 min.The XRD spectra also revealed that most of the Sr(OH)_(2)·8H_(2)O transformed into Sr(OH)_(2)after dehydration via microwave irradiation,whereas a significant portion of the Sr(OH)_(2)·H_(2)O 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)·8H_(2)O could be well described by the Page model.