【作者】 张丽莉； 黄萍； 陈广宇； 卢嘉春；

【Author】 ZHANG Li-li, HUANG Ping, CHEN Guang-yu, LU Jia-chun Nuclear Institute of Northwest Technology, Xi’an 710024, China

【机构】 西北核技术研究所；

【摘要】 采用原位红外光谱法对碳炔及硫和碳炔的混合物在空气中的加热过程进行研究。碳炔和硫混合加热时,碳炔在2 135 cm-1处的特征峰在155℃时消失,与碳炔直接加热不同的是在1 508cm-1产生一个峰, 并且随着温度的升高,峰强增大,而且在大约200℃开始,在2 050 cm-1出现一个小峰,随着温度的升高峰强增大,在285℃时峰最强。实验结果说明硫与碳炔的确发生了反应。而且在高温是由于硫的存在使制备的碳炔混合产物进一步脱氯化氢,产生了共轭烯烃。更多还原

【Abstract】 Thermal stability of carbyne and the mixture of carbyne and sulfur was studied by in-situ FTIR spectroscopy. The characteristic IR peak of 2 135 cm-1 of carbyne disappeared when the mixture of carbyne and sulfur was heated at 155 ℃. An IR peak of 1 508 cm-1 of the mixture appeared, which was different with carbyne heated alone. The IR peak intensity of 1 508 cm-1 increased as the heating temperature of the mixture rose. A weak IR peak of 2 050 cm-1 of the mixture appeared when the temperature was up to 200 ℃. The IR peak intensity increased as the heating temperature of the mixture rose and was the strongest at 285 ℃. The experiment showed that carbyne did react with sulfur when they were mixed. In the presence of sulfur further dehydrochloride was carried out and some conjugate alkene appeared.更多还原