University Chemistry ›› 2019, Vol. 34 ›› Issue (9): 91-94.doi: 10.3866/PKU.DXHX201903014

• Chemistry Laboratory • Previous Articles     Next Articles

Improvement of the Experiment for Synthesis of Calcium Peroxide Using Egg Shells

Min PENG,Jianxin SHI*(),Zhou WANG,Lianyun LI   

  • Received:2019-03-08 Accepted:2019-04-08 Published:2019-04-17
  • Contact: Jianxin SHI E-mail:cessjx@mail.sysu.edu.cn
  • Supported by:
    2017年中山大学校级质量工程项目“重点教材建设项目”

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.

Key words: Egg shell, Calcium peroxide