L. N. Zelenina, T. P. Chusova, S. A. Sapchenko, N. V. Gelfond
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引用次数: 0
摘要
摘要 在 305-459 K 的温度范围内,使用静态张力测量法和膜空压力计测量了二甲基甲酰胺(C3H7NO)在主体系(有机金属框架 [Zn4(dmf)(ur)2(ndc)4])和客体(C3H7NO)体系中的饱和蒸汽和不饱和蒸汽的压力。从实验数据中获得了客体从主框架过渡到气相的压力随温度变化的关系。确定了这些过程的焓和熵,并计算了 C3H7NO 与框架结合过程中的吉布斯能变化。利用获得的数据得出了有机金属框架与二甲基甲酰胺之间相互作用性质的结论。研究结果与之前研究的水、苯和二茂铁在[Zn4(dmf)(ur)2(ndc)4]上的吸附过程进行了比较。
Thermodynamic Study of the Sorption of Gaseous Dimethylformamide on an Organometallic Framework [Zn4(ndc)4(ur)2(dmf)]
Abstract
Pressures of saturated and unsaturated vapors of dimethylformamide (C3H7NO) in the host (organometallic framework [Zn4(dmf)(ur)2(ndc)4]) and guest (C3H7NO) system are measured using static tensiometry with membrane null-manometers across the 305–459 K range of temperatures. Temperature dependences of the pressures for the guest transition from the host framework into the gas phase are obtained from the experimental data. The enthalpies and entropies of these processes are determined, and the change in Gibbs energy during the bonding of C3H7NO to the framework is calculated. The obtained data are used to draw conclusions about the nature of interactions between the organometallic framework and dimethylformamide. Findings are compared to previously studied sorption processes of water, benzene, and ferrocene on [Zn4(dmf)(ur)2(ndc)4].
期刊介绍:
Russian Journal of Physical Chemistry A. Focus on Chemistry (Zhurnal Fizicheskoi Khimii), founded in 1930, offers a comprehensive review of theoretical and experimental research from the Russian Academy of Sciences, leading research and academic centers from Russia and from all over the world.
Articles are devoted to chemical thermodynamics and thermochemistry, biophysical chemistry, photochemistry and magnetochemistry, materials structure, quantum chemistry, physical chemistry of nanomaterials and solutions, surface phenomena and adsorption, and methods and techniques of physicochemical studies.