摘要
对原位漫反射中红外光谱开展了氢氧化钠杂质研究。实验发现:氢氧化钠杂质主要包括:少量碳酸钠和水。碳酸钠分子主要的红外吸收模式包括:C=O基团伸缩振动模式(νC=O-Na_(2)CO_(3))和CO_(3)基团面内弯曲振动模式(βCO_(3)-Na_(2)CO_(3))的合频峰(νC=O-Na_(2)CO_(3)+βCO_(3)-Na_(2)CO_(3));C=O基团伸缩振动模式(νC=O-Na_(2)CO_(3));CO_(3)基团不对称伸缩振动模式(νasCO_(3)-Na_(2)CO_(3));CO_(3)基团对称伸缩振动模式(νsCO_(3)-Na_(2)CO_(3));CO_(3)基团面外弯曲振动模式(rCO_(3)-Na_(2)CO_(3))及CO_(3)基团面内弯曲振动模式(βCO_(3)-Na_(2)CO_(3));水分子主要的红外吸收模式包括:OH基团伸缩振动模式(νOH-H_(2)O)。原位漫反射中红外光谱在氢氧化钠杂质分析领域,具有重要的应用研究价值。
In situ diffuse reflectance mid infrared spectroscopy was used to study the impurity structure of sodium hydroxide.It is found that sodium hydroxide contains a small amount of sodium carbonate and water.The main infrared absorption modes of sodium carbonate molecules include:C=O groupstretching vibration mode(νC=O-Na_(2)CO_(3))and CO_(3)groupin-plane bending vibration mode(βCO_(3)-Na_(2)CO_(3))combined frequency peak(νC=O-Na_(2)CO+βCO_(3)-Na_(2)CO_(3)),C=O groupstretching vibration mode(νC=O-Na_(2)CO_(3)),CO_(3)groupasymmetric stretching vibration mode(νasCO_(3)-Na_(2)CO_(3)),CO_(3)groupsymmetric stretching vibration mode(νsCO_(3)-Na_(2)CO_(3)),CO_(3)group out of plane bending vibration mode(rCO_(3)-Na_(2)CO_(3))and CO_(3)group in plane bending vibration mode(βCO_(3)-Na_(2)CO_(3)).The main infrared absorption modes of water molecules include:OH groupstretching vibration mode(νOH-H_(2)O).In situ diffuse reflectance mid infrared spectroscopy has important application research value in the analysis of sodium hydroxide impurities.
作者
张美环
李雨情
宗鹤宸
王静伟
宗雪晴
于宏伟
Zhang Meihuan;Li Yuqing;Zong Hechen;Wang Jingwei;Zong Xueqing;Yu Hongwei(School of Chemical Engineering Shijiazhuang College)
出处
《上海计量测试》
2024年第1期28-32,36,共6页
Shanghai Measurement and Testing
关键词
原位漫反射中红外光谱
杂质
氢氧化钠
碳酸钠
水
in situ diffuse reflectance mid infrared spectroscopy
impurity
sodium hydroxide
sodium carbonate
water
