Improvement of Ethyl Acetate Experiment Teaching Based on Integration, Greenization and Visualization
HUANG Yu-Ping1, YANG Xiu-Mei2, YUAN Qiong-Ling1, XU Wen3*
1. Qujing No. 2 High School, Qujing 655000, China; 2. Laochang Middle School of Fuyuan County, Qujing 655500, China; 3. Qujing Normal University, Qujing 655000, China
Abstract Aiming at the prominent problems of high pollution, unintuitive phenomena, and cumbersome separation and purification in the traditional preparation and hydrolysis experiments of ethyl acetate, this study integrates the concepts of green chemistry and visualized inquiry to optimize the experimental device and catalytic system. For the preparation experiment, a Soxhlet extractor was used as an integrated reaction-separation device, anhydrous AlCl3was adopted to replace traditional concentrated sulfuric acid as a catalyst, and a composite indicator system of methyl violet-color-changing silica gel-phenolphthalein was matched to realize real-time visualized monitoring of the reaction process and efficient, closed separation of products. For the hydrolysis experiment, a blood collection tube microreactor was used, combined with Sudan Ⅲ staining and an ethanol sensor, to intuitively present and quantitatively compare the reaction rates under different conditions. The improved experiment realizes reagent miniaturization, process visualization and data quantification, significantly reduces pollution and safety risks, improves the inquiry and teaching effect of the experiment, and provides a practical example for the greenization and digital reform of high school chemistry experiments.
HUANG Yu-Ping, YANG Xiu-Mei, YUAN Qiong-Ling, XU Wen. Improvement of Ethyl Acetate Experiment Teaching Based on Integration, Greenization and Visualization[J]. Chinese Journal of Chemical Education, 2026, 47(13): 83-88.
