Abstract The preparation of 12-tungstosilicic acid is a normal experiment in the Inorganic Chemistry Experiment. This experiment is a verification experiment, with the shortage of inquiry and comprehensiveness, the amount of experimental medicine is large, and the safety is low. In this paper, according to “National Standard for Undergraduate Teaching Quality of Chemistry Specialty”, considering the experimental design and safety, the experiment has been improved in inorganic preparation, structure characterization and performance measurement. The micro-experiments and single factor experiments were used to explore influences of different factors on the preparation of 12-tungstosilicic acid by diethyl ether extraction method. Ultraviolet and infrared spectra were used on product structure characterization. Electrochemical workstation was learned to determine the electrochemical properties of the product. Students were guided to master the research methods scientifically and systematically. Students could deep the green chemistry concept, enhance the understanding of the relationship between structure and performance, and understand the application of polyacid, aiming to cultivate students’ comprehensive experimental ability and innovative capability, which could lay foundations for thesis and research work.
FENG Ling-Zhu, DAI Xiao-Min, LIU Xu-Dong, WU Yu-Juan, FENG Yue. Micro-Experimental Study on Preparation of 12-Tungstosilicic Acid[J]. Chinese Journal of Chemical Education, 2023, 44(8): 71-75.
