Yang Zihao, Yin Taiheng, Zhang Fengfan, Wu Wei, Lin Meiqin, Dong Zhaoxia, Zhang Juan
Unconventional Petroleum Research Institute, China University of Petroleum (Beijing) Beijing 102249 People's Republic of China
China University of Geosciences (Beijing) Beijing 100083 People's Republic of China.
RSC Adv. 2020 May 13;10(31):18192-18199. doi: 10.1039/d0ra00326c. eCollection 2020 May 10.
To study the microscopic dispersion state of CO in different ester solvents, the solubility, volume expansion coefficients and Fourier transform infrared (FTIR) spectra of the CO-ester system were measured. The results show that the solubility and expansion coefficient of CO in ester solvents decreases as the hydrocarbon chain increases. As the pressure increases, the infrared absorption peaks of CO and the functional groups characteristic of ester molecules shift, indicating that CO molecules interact with ester molecules and that CO would destroy the interactions between the ester molecules. The hydrocarbon chain length of the ester molecules has a significant effect on the infrared absorption peak of the CO-ester system. As the hydrocarbon chain length increases, the CO absorption peak shift and peak shift of the carbonyl groups in the ester gradually decrease.
为研究一氧化碳（CO）在不同酯类溶剂中的微观分散状态，测定了CO - 酯体系的溶解度、体积膨胀系数及傅里叶变换红外（FTIR）光谱。结果表明，随着酯类溶剂中碳氢链长度增加，CO在其中的溶解度和膨胀系数降低。随着压力升高，CO的红外吸收峰以及酯分子特征官能团发生位移，表明CO分子与酯分子相互作用，且CO会破坏酯分子间的相互作用。酯分子的碳氢链长度对CO - 酯体系的红外吸收峰有显著影响。随着碳氢链长度增加，CO吸收峰位移以及酯中羰基的峰位移逐渐减小。
