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Study on Uranium Temperature Programmed Reaction With O2 and CO2
Author(s): ZHENG Shao-tao, MENG Da-qiao, TANG Tao, LUO Wen-hua, LIU Ke-zhao, ZHANG Guang-feng
Pages: 141-
145
Year: 2005
Issue:
z1
Journal: ATOMIC ENERGY SCIENCE AND TECHNOLOGY
Keyword: 铀; O2; CO2; 程序升温氧化;
Abstract: 利用程序升温分析方法研究了铀与氧气和二氧化碳的反应行为(TPO).结果表明:在两种气氛中的反应过程均存在诱导期;当氧气分压处在16%~45%范围内时,铀的着火点温度为581~606 K,中间产物为UO2,最终产物为U3O8;铀在CO2气氛中的着火点温度相对较高,在反应过程中,CO2解离产生CO气体;反应的表观活化能随气体浓度的升高而降低.
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