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Hydrofluoric acid corrosion kinetics of silicate glass used to prepare glass hollow fibre membranes
Cao, Xu1,2,3; Zhang, Yabin1,2,3; Su, Mengling3; Feng, Haitao1
2015-04-01
发表期刊PHYSICS AND CHEMISTRY OF GLASSES-EUROPEAN JOURNAL OF GLASS SCIENCE AND TECHNOLOGY PART B
卷号56期号:2页码:59-62
文章类型Article
摘要One important process during the preparation of glass hollow fibre membranes is the acid-leaching procedure of the phase separated glass. Herein, the hydrofluoric acid corrosion behaviour of silicate glass was studied. The weight change W-1 increased in direct proportion to the HF content c, and the slope W-1/c increased in direct ratio to the corrosion time t. The activation energy Ea, enthalpy Delta H and entropy Delta S between silicate glass and HF solution at different content c, were also calculated. The positive sign of Delta H reflected that an endothermic reaction between silicate glass and HF solution took place. The activation energy Ea and entropy AS decreased with increasing HF content. The results suggests that the energy barrier of corrosion reaction and the disordered level in the system decreased with the increasing HF content. In other words, the stable phases SiF4 and Na2SiF6 were produced more easily when high HF contents were used.
WOS标题词Science & Technology ; Physical Sciences ; Technology
关键词[WOS]SEPARATION ; STABILITY ; GAS
收录类别SCI
语种英语
WOS研究方向Chemistry ; Materials Science
WOS类目Chemistry, Physical ; Materials Science, Ceramics
WOS记录号WOS:000354913200003
引用统计
文献类型期刊论文
条目标识符http://ir.isl.ac.cn/handle/363002/6133
专题青海盐湖研究所知识仓储
作者单位1.Chinese Acad Sci, Qinghai Inst Salt Lakes, Key Lab Salt Lake Resources & Chem, Xining 810008, Peoples R China
2.Tsinghua Univ, Key Lab Solid Waste Management & Environm Safety, Minist Educ China, Beijing 100084, Peoples R China
3.Tianjin Polytech Univ, State Key Lab Hollow Fibre Membrane Mat & Proc, Tianjin 300387, Peoples R China
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Cao, Xu,Zhang, Yabin,Su, Mengling,et al. Hydrofluoric acid corrosion kinetics of silicate glass used to prepare glass hollow fibre membranes[J]. PHYSICS AND CHEMISTRY OF GLASSES-EUROPEAN JOURNAL OF GLASS SCIENCE AND TECHNOLOGY PART B,2015,56(2):59-62.
APA Cao, Xu,Zhang, Yabin,Su, Mengling,&Feng, Haitao.(2015).Hydrofluoric acid corrosion kinetics of silicate glass used to prepare glass hollow fibre membranes.PHYSICS AND CHEMISTRY OF GLASSES-EUROPEAN JOURNAL OF GLASS SCIENCE AND TECHNOLOGY PART B,56(2),59-62.
MLA Cao, Xu,et al."Hydrofluoric acid corrosion kinetics of silicate glass used to prepare glass hollow fibre membranes".PHYSICS AND CHEMISTRY OF GLASSES-EUROPEAN JOURNAL OF GLASS SCIENCE AND TECHNOLOGY PART B 56.2(2015):59-62.
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