科研实验转化成综合化学教学实验的探索

Investigation on Comprehensive Chemistry Teaching Experiment Converted by the Scientific Research

探索了由生物无机化学中较为成熟的科研实验"羧酸氧钒化合物的制备与表征"设计转化成研究型综合化学实验。采用芳香羧酸配体与简单的钒原料化合物反应,通过探索与优化实验过程中各步骤的最佳反应条件、处理方法以及适当的实验时间,以达到现象稳定、重复性好的教学实验要求。同时对制备的目标产物羧酸氧钒化合物,采用红外光谱和热重分析手段进行表征工作。该实验可以帮助学生巩固配合物制备基本原理,掌握旋转蒸发仪、微波炉、红外光谱仪、热重分析仪的工作原理及操作技能,培养学生相关的化学基础知识、实验操作、仪器分析等方面的综合能力以及相关的科学素质和研究能力。

This work investigated the design and conversion of a research-based comprehensive chemistry experiment in laboratory. The preparation and characterization of carboxylate vanadyl complex is a routine synthetic method in the scientific research on bio-inorganic chemistry. Through the study and optimization all the steps of the experiment which uses the aromatic carboxylic acid to react with the vanadium raw materials, the best experiment conditions, the most effective handling methods and the appropriate reaction time were obtained. The experiment could satisfy the requirements of the stability and reproducibility in teaching experiment. And the carboxylate vanadyl complex products were characterized by the infra-red spectrum （IR） and thermogravimetric analysis （TGA）. Through this comprehensive experiment, the students could consolidate the principle of complex preparation, understand and grasp the working principle and operation skill of the rotary evaporator, microwave oven, infrared spectroscopy and thermogravimetric analyzer, and develop their comprehensive ability including the related chemical basic knowledge, experimental operation, instrument analysis and relevant scientific literacy and research ability.