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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. 相似文献
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鸡蛋壳制备葡萄糖酸钙的研究 总被引:8,自引:0,他引:8
葡萄糖酸钙是一种溶解度高,生理宽容性大的钙营养剂和抗过敏药,广泛用作食品添加剂及医药制剂供口服或静脉注射.目前常用的生产方法主要是生物发酵法,其缺点是工艺复杂, 生产周期长且易造成污染.本研究以葡萄糖酸δ内酯作为葡萄糖酸的来源,利用蛋壳中所含高达93%的CaCO3[1]进行中和反应制备葡萄糖酸钙,探索了一条变废为宝,工艺简单,成本低,污染小的葡萄糖酸钙生产路线. 相似文献
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