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碳酸钙三级红外光谱研究
引用本文:张彬,肖霄,韩芸娇,张媛媛,于宏伟.碳酸钙三级红外光谱研究[J].无机盐工业,2021,53(1):97-101.
作者姓名:张彬  肖霄  韩芸娇  张媛媛  于宏伟
作者单位:石家庄学院化工学院,河北石家庄 050035
基金项目:石家庄学院应用型课程开发与建设项目
摘    要:采用红外(IR)光谱技术开展了碳酸钙的结构研究。实验发现,碳酸钙的红外吸收模式包括碳酸钙CO3不对称伸缩振动模式(ν)、碳酸钙 CO3对称伸缩振动模式(ν)、碳酸钙CO3面外弯曲振动模式(r)和碳酸钙CO3面内弯曲振动模式(β)等。采用变温红外(TD-IR)光谱开展了碳酸钙的热稳定性研究。在293~393 K的温度范围内,碳酸钙主要官能团对应的吸收强度及频率都有一定的改变。采用二维红外(2D-IR)光谱进一步研究了碳酸钙ν、r和β吸收峰变化快慢的信息,证明了三级红外(IR)光谱在重要的无机盐(碳酸钙)结构及热稳定性研究中的重要作用。

关 键 词:碳酸钙  结构  热稳定性  红外光谱  
收稿时间:2020-07-27

Study on third-step infrared spectroscopy of calcium carbonate
Zhang Bin,Xiao Xiao,Han Yunjiao,Zhang Yuanyuan,Yu Hongwei.Study on third-step infrared spectroscopy of calcium carbonate[J].Inorganic Chemicals Industry,2021,53(1):97-101.
Authors:Zhang Bin  Xiao Xiao  Han Yunjiao  Zhang Yuanyuan  Yu Hongwei
Affiliation:College of Chemical Technology,Shijiazhuang University,Shijiazhuang 050035,China
Abstract:The calcium carbonate structure was studied by infrared(IR) spectroscopy.There were calcium carbonate CO3asymmetrical stretch vibrationmode(ν),calcium carbonate CO3 symmetrical stretching vibration mode(ν),calcium carbonate CO3 out-of-plane bending vibration mode(r) and calcium carbonate CO3 in-plane bending vibration mode(β).Temperature-dependent infrared(TD-IR) spectroscopy was also used to study the thermal stability of calci-um carbonate.In the temperature range of 293~393 K,the infrared absorption intensity and frequency of the main functional groups of calcium carbonate had some changes.Two-dimensional infrared(2D-IR) spectroscopy of the calcium carbonate(ν,r and β) were studied to the frequency information of the absorption peak change.The key roles of third-step IR spectroscopy in the analysis of structure and thermal stability of the important inorganic salt(calcium carbonate) were demonstrated.
Keywords:calcium carbonate  structure  thermal stability  infrared spectroscopy  
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