Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 박주현 | - |
dc.date.accessioned | 2022-10-28T04:35:49Z | - |
dc.date.available | 2022-10-28T04:35:49Z | - |
dc.date.issued | 2014-02 | - |
dc.identifier.citation | TMS Annual Meeting, Page. 149-156 | en_US |
dc.identifier.uri | https://onlinelibrary.wiley.com/doi/10.1002/9781118888551.ch28 | en_US |
dc.identifier.uri | https://repository.hanyang.ac.kr/handle/20.500.11754/175939 | - |
dc.description.abstract | Sublimation of ZrCl4 is important for the production of nuclear grade metallic Zr in Kroll's process. The sublimation kinetics of ZrCl 4 was investigated by TGA under both isothermal and non-isothermal conditions. The sublimation rate of ZrCl4 increased with increasing temperature under isothermal conditions. ZrCl4 sublimation was confirmed to be a zero-order process under isothermal conditions, whereas it was first-order kinetics under non-isothermal conditions. The activation energy of ZrCl4 sublimation under isothermal conditions was 21.7 kJ/mol. The activation energy for non-isothermal sublimation was 101.4 kJ/mol and 108.1 kJ/mol with the Kissinger method and Flynn-Wall-Ozawa method, respectively. These non-isothermal activation energies were very close to the heat of sublimation (103.3 kJ/mol). Sublimation occurs by two elementary steps: surface reaction and desorption. Therefore, the overall activation energy of ZrCl 4 sublimation is 104.8(±3.4) kJ/mol. The activation energy of the surface reaction and desorption steps are proposed to be 83.1 kJ/mol and 21.7 kJ/mol, respectively. | en_US |
dc.language | en | en_US |
dc.publisher | Minerals, Metals and Materials Society | en_US |
dc.subject | Activation energy | en_US |
dc.subject | Desorption step | en_US |
dc.subject | Sublimation kinetics | en_US |
dc.subject | Surface reaction step | en_US |
dc.subject | TGA | en_US |
dc.title | Sublimation Kinetics of Zirconium Tetrachloride (ZrCl4) for Producing Zr Sponge | en_US |
dc.type | Article | en_US |
dc.identifier.doi | 10.1002/9781118888551.ch28 | en_US |
dc.relation.page | 149-156 | - |
dc.relation.journal | TMS Annual Meeting | - |
dc.contributor.googleauthor | Shin, Jae hong | - |
dc.contributor.googleauthor | Choi, Mi sun | - |
dc.contributor.googleauthor | Min, Dong joon | - |
dc.contributor.googleauthor | Park, Joo hyun | - |
dc.sector.campus | E | - |
dc.sector.daehak | 공학대학 | - |
dc.sector.department | 재료화학공학과 | - |
dc.identifier.pid | basicity | - |
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