| 金刚石压腔蛇纹石原位拉曼光谱研究 |
| |
| 作者姓名： | Liu J Sun Q |
| |
| 作者单位： | 北京大学地球与空间科学学院,地壳与造山带演化教育部重点实验室,北京,100871 |
| |
| 基金项目： | 国家自然科学基金项目(40873047)资助 |
| |
| 摘 要： | 在金刚石压腔中,运用激光拉曼光谱技术对高压下蛇纹石矿物结构及其稳定性进行了原位观测与研究。实验获得蛇纹石在常温下从0.1～5 140MPa的拉曼光谱数据。研究发现,蛇纹石低频拉曼谱峰388,471,692和705cm-1随压力增加有规律地向高频偏移;层内羟基3 664cm-1峰和层间羟基3 696cm-1峰与压力呈明显的正相关性。层内羟基3 664cm-1峰随压力变化的斜率为3.3cm-1.GPa-1,层间羟基3 696cm-1峰在2.0GPa时斜率由8.3cm-1.GPa-1变为1.1cm-1.GPa cm-1。在实验温压条件下,蛇纹石未发生脱水作用。
|
| 关 键 词： | 金刚石压腔 蛇纹石 高压 拉曼光谱 羟基 |
In-situ Raman spectroscopic study of serpentine using diamond anvil cell |
| |
| Liu J,Sun Q.In-situ Raman spectroscopic study of serpentine using diamond anvil cell[J].Spectroscopy and Spectral Analysis,2011,31(2):398-401. |
| |
| Authors: | Liu Jin Sun Qiang |
| |
| Institution: | LIU Jin,SUN Qiang School of Earth and Space Sciences,Peking University and Key Laboratory of Orogenic Belts and Crustal Evolution,Ministry of Education,Beijing 100871,China |
| |
| Abstract: | Within the diamond anvil cell, the Raman spectroscopic study of serpentine was operated at room temperature and under pressures from 1 atm to 5 140 MPa. This study analyzed the pressure dependence of the low-frequency Raman vibrational modes of serpentine at 388, 471, 692 and 705 cm(-1) respectively. The vibrational modes of inner OH groups at 3 664 cm(-1) and inter-layer OH groups at 3 696 cm(-1) shifted linearly with the increasing pressures. The pressure-related slope of 3 664 cm(-1) was 3.3 cm(-1) x GPa(-1). The vibrational mode at 3 696 cm(-1) of the inter-layer hydroxyl shifted upwards with the pressure-related slope 8. 3 cm(-1) x GPa(-1) up to 2.0 GPa, and then with 1.1 cm(-1) GPa(-1) from 2.0 GPa to ca. 5.0 GPa. It could be interpreted that the hydrogen bond of the inter-layer hydroxyl made dominant contribution to such experimental phenomena. In addition, the dehydration of serpentine did not occur under such conditions. |
| |
| Keywords: | Diamond anvil cell Serpentine High pressure Raman spectroscopy Hydroxyl |
| 本文献已被 CNKI 万方数据 PubMed 等数据库收录！ |
|
