Improvement of the Experiment for Synthesis of Calcium Peroxide Using Egg Shells
Min PENG,Jianxin SHI,Zhou WANG,Lianyun LI. Improvement of the Experiment for Synthesis of Calcium Peroxide Using Egg Shells[J]. University Chemistry, 2019, 34(9): 91-94. DOI: 10.3866/PKU.DXHX201903014
School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, P. R. China
Abstract:
Instead of calcium chloride, we used egg shells as material in the experiment for synthesis of calcium peroxide. This could help to improve students' environmental consciousness and stimulate students' interest in experiment. We designed procedures for egg shells pre-treatment and the synthesis of calcium peroxide, which were suitable for students. The amount of hydrogen peroxide and ammonia was optimized. The yield of anhydrous calcium peroxide was about 70% with a great than 75% purity.
