Origin of the thermal desorption peaks of gases in NaI above 180°C
Origin of the thermal desorption peaks of gases in NaI above 180°C
复制标题
180°C 以上 NaI 中气体热解吸峰的起源
DOI:
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发表时间:
2009
期刊:
影响因子:
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通讯作者:
O. Shishkin
中科院分区:
文献类型:
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作者:
D. Sofronov;K. Kudin;A. Voloshko;A. M. Kudin;O. Shishkin
We analyze the origin of the water desorption peaks in NaI above the temperature stability range of the crystalline hydrate NaI · 2H2O. The two water desorption peaks at t ≥ 180°C are shown to arise from the decomposition of aqua complexes based on hydroxyl groups. Such peaks in the pressure-temperature curve provide an effective and sensitive tool for detecting OH groups in raw materials. After prolonged room-temperature dehydration, no such peaks emerge. The dehydration process can be accelerated by microwave drying.