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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
Source PublicationPHYSICS AND CHEMISTRY OF GLASSES-EUROPEAN JOURNAL OF GLASS SCIENCE AND TECHNOLOGY PART B
Volume56Issue:2Pages:59-62
SubtypeArticle
AbstractOne 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 HeadingsScience & Technology ; Physical Sciences ; Technology
WOS KeywordSEPARATION ; STABILITY ; GAS
Indexed BySCI
Language英语
WOS Research AreaChemistry ; Materials Science
WOS SubjectChemistry, Physical ; Materials Science, Ceramics
WOS IDWOS:000354913200003
Citation statistics
Document Type期刊论文
Identifierhttp://ir.isl.ac.cn/handle/363002/6133
Collection青海盐湖研究所知识仓储
Affiliation1.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
Recommended Citation
GB/T 7714
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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