金属钾和碳酸钠高压合成金刚石  

Synthesis of Diamond with Potassium and Sodium Carbonate Under High Pressure

作　　者：焦晓朋[1] 李本仙[1] 王然[1] 杨斌[1] 陆凤国[1] 赵旭东[1] 刘晓旸[1] 

机构地区：[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

出　　处：《高等学校化学学报》2010年第11期2127-2130,共4页Chemical Journal of Chinese Universities

基　　金：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,可以在温和的条件下合成金刚石.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.

关 键 词：金刚石 合成 高压 碳酸钠 

分 类 号：O613.71[理学—无机化学]