大学化学 >> 2022, Vol. 37 >> Issue (1): 2104003.doi: 10.3866/PKU.DXHX202104003

化学实验 上一篇    下一篇

三氯化六氨合钴(Ⅲ)合成条件的改进

刘娜, 沙达提·古出尔, 韩方书, 黄雪莉, 程晓晶()   

  • 收稿日期:2021-04-06 录用日期:2021-07-05 发布日期:2021-07-27
  • 通讯作者: 程晓晶 E-mail:xjdxliuna@126.com
  • 作者简介:程晓晶,xjdxliuna@126.com
  • 基金资助:
    新疆维吾尔自治区普通高等学校教学改革研究项目(2018JG27)

Improvement of Synthesis Conditions of Hexamine Cobalt (Ⅲ) Chloride

Na Liu, Dati Sha·Gu Chuer, Fangshu Han, Xueli Huang, Xiaojing Cheng()   

  • Received:2021-04-06 Accepted:2021-07-05 Published:2021-07-27
  • Contact: Xiaojing Cheng E-mail:xjdxliuna@126.com

摘要:

在无机化学实验“三氯化六氨合钴(Ⅲ)的制备及组分测定”中,产物合成产率较低,影响后续实验开展和教学效果。本文基于基本化学原理优化实验合成条件,考查了活性炭催化剂用量、粒度和盐酸用量对三氯化六氨合钴(Ⅲ)产率的影响。实验结果表明:当活性炭催化剂用量为0.2 g、粒度为120目、盐酸溶液为(25 mL热水+1 mL盐酸)、浓盐酸用量为3 mL时,三氯化六氨合钴(Ⅲ)产率可达到42.5%,产品颜色(橙色)、纯度和结晶度明显提高,达到了实验预期结果。并且对不同粒度的催化剂,确定了可靠活性炭用量。通过该实验提高了学生化学基本原理的应用能力和解决问题能力。

关键词: 三氯化六氨合钴(Ⅲ), 合成, 产率

Abstract:

In the inorganic chemistry experiment, "Preparation and Component Determination of Hexamine Cobalt Chloride (Ⅲ)", the yield of product is low, which impedes the implement of subsequent experiment and teaching. Based on basic principles of chemistry, the effects of the quantity and particle size of activated carbon catalyst and the amount of hydrochloric acid and water were investigated. The experimental results showed that with 0.2 g, 120 mesh activated carbon catalyst, acid solution of 1 mL HCl plus 25 mL hot H2O, and 3 mL concentrated hydrochloric acid, the yield of hexamine cobalt chloride(Ⅲ) was up to 42.5%, the color(orange), purity and crystallinity of the product were significantly improved. Through the experiment, the ability of students to apply the basic principles of chemistry to solve problems was enhanced.

Key words: Hexamine cobalt (Ⅲ) chloride, Synthesis, Yield

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