高等学校化学学报 ›› 2010, Vol. 31 ›› Issue (11): 2127-2130.

• 研究论文 • 上一篇    下一篇

金属钾和碳酸钠高压合成金刚石

焦晓朋, 李本仙, 王然, 杨斌, 陆凤国, 赵旭东, 刘晓旸   

  1. 吉林大学化学学院, 无机合成与制备化学国家重点实验室, 长春130012
  • 收稿日期:2010-04-08 出版日期:2010-11-10 发布日期:2010-11-10
  • 通讯作者: 刘晓旸, 男, 博士, 教授, 博士生导师, 主要从事高压合成化学与物理研究. E-mail: liuxy@jlu.edu.cn
  • 基金资助:

    国家自然科学基金(批准号: 20471022, 40673051和20121103)资助.

Synthesis of Diamond with Potassium and Sodium Carbonate Under High Pressure

JIAO Xiao-Peng, LI Ben-Xian, WANG Ran, YANG Bin, LU Feng-Guo, ZHAO Xu-Dong, LIU Xiao-Yang*   

  1. State Key Laboratory of Inorganic Synthesis and Preparative Chemistry, College of Chemistry, Jilin University, Changchun 130012, China
  • Received:2010-04-08 Online:2010-11-10 Published:2010-11-10
  • Contact: LIU Xiao-Yang. E-mail: liuxy@jlu.edu.cn
  • Supported by:

    国家自然科学基金(批准号: 20471022, 40673051和20121103)资助.

摘要: 以金属钾和碳酸钠为反应原料, 在压力为2 GPa, 温度为500 ℃的密封白金坩埚中反应18 h, 所得产物通过粉末X射线衍射和显微拉曼分析进行了表征, 证实合成出了微米级的金刚石. 对金刚石的合成机理进行了研究, 推测其反应过程为碳酸钠在铂和钾的作用下分解出CO2, CO2与钾反应得到金刚石. 研究结果表明金刚石可以在温和的条件下合成.

关键词: 金刚石, 合成, 高压, 碳酸钠

Abstract: Diamond was synthesized by the reaction of potassium and sodium carbonate at 2 GPa and 500 ℃ for 18 h. The final product was characterized by powder X-ray diffraction and Raman spectroscopy, which confirmed the existence of micrometer-sized diamond. A probable reaction mechanism was discussed that Na2CO3 reacted with Pt and K under high pressure and high temperature to generate CO2 which reacted with K to produce diamond. The results show that  diamond can be obtained under mild conditions of pressure and temperature.

Key words: Diamond, Synthesis, High pressure, Sodium carbonate