Device Improvement and Content Optimization for the Experiment of Catalytic Decomposition of Hydrogen Peroxide
SHAO Song-Xue1, HOU Xin-Long1, HAO Peng-Peng2, SHEN Hai-Yun1, QIU Li-Juan1, WANG Yu-Nan1, WANG Si-Lu1, ZHU Li-Na1**
1. National Demonstration Center for Experimental Chemistry and Chemical Engineering Education, Department of Chemistry, College of Science, Tianjin University, Tianjin 300350, China; 2. Tianjin RenAi College, Tianjin 301636, China
Abstract The catalytic decomposition of hydrogen peroxide is a classical dynamic experiment. At present, the reaction rate constant and half-life are determined according to the method of measuring the gas volume. Based on analysis and summary of now existing deficiency, a new experimental device which is authorized by national practical patent has been innovatively designed and applied in undergraduate experiment course. Compared with original device, the accuracy and reproducibility are improved significantly, repetitive operation and reagents loss are reduced, experimental cost is saved. It follows the concept of green chemistry. In addition, the improved device can be applied to explored the dynamic characteristics of the decomposition of hydrogen peroxide catalyzed by FeCl3 under the principle of initial rate method. The reaction order, rate constant and activation energy could be measured accurately. It not only extends the traditional content and method of experiment, but also achieves the high-order training objectives of inquiry thinking and method.
SHAO Song-Xue, HOU Xin-Long, HAO Peng-Peng, SHEN Hai-Yun, QIU Li-Juan, WANG Yu-Nan, WANG Si-Lu, ZHU Li-Na. Device Improvement and Content Optimization for the Experiment of Catalytic Decomposition of Hydrogen Peroxide[J]. Chinese Journal of Chemical Education, 2024, 45(10): 29-35.
