a型和B型线型碳的合成及热稳定性研究  

SYNTHESIS OF a AND B-CARBYNE (LINEAR CARBON) AND THEIR THERMODYNAMIC STABILITY

作　　者：王世华[1] 王茹[1] 夏雨青 罗治斌 白殿罡 

机构地区：[1]四川大学化工学院，四川 成都 610065

出　　处：《新型炭材料》2000年第4期30-34,共5页New Carbon Materials

摘　　要：经过乙炔铜 (Cu2 C2 )的氧化偶合反应 ,制得了 α型和 β型的线型碳。当加入 KCN时 ,产物经红外光谱分析 ,其主要成分为 α型线型碳 ;而当加入盐酸时 ,主要产物将是 β型线型碳。而且 ,含铜量分别降至 1.92 %和 5 %。其中 β型产品在 2 5 0℃ ,常压下处理 1.5 h,转变为 α型 ;在氮气下 (小于 2 .0 Mpa)热处理 ,β型线型碳有转化为粉末金刚石的迹象。本法成本低 ,而且制备过程短 ,与已报道的制备方法相比 ,可大大缩短合成周期。By oxidative coupling of copper acetylide, carbyne of α form and β form were obtained. When KCN is added, it is shown by FT IR that the main constituent of the product is α form; however, when HCl is added, the main product will be β form. And the residual coppers is reduced to 1.92 % and 5 % , respectively. The β form will turn to α form under 250 ℃ and 0.1 MPa for 1.5 h, and it will turn to powdery diamond when it is heattreated under pressure. In our experiment, the cost is cut down sharply and it spends only several hours to get the product other than several days as reported.

关 键 词：a型 B型 线型碳 合成 热稳定性 氧化偶合反应 

分 类 号：O613[理学—无机化学]