污染食盐制备纯碱的综合与创新实验设计  

Improvement on Preparation of NaCO and Innovative Design on Purification of Salt

作　　者：刘雪茹 张荣兰[1] 崔斌[1] Xueru Liu;Ronglan Zhang;Bin Cui(National Demonstration Center for Experimental Chemistry Education(Northwest University),College of Chemistry and Materials Science,Northwest University,Xi’an 710127,China)

机构地区：[1]西北大学化学与材料科学学院,化学国家级实验教学示范中心(西北大学),西安710127

出　　处：《大学化学》2021年第8期164-170,共7页University Chemistry

基　　金：国家一流专业建设项目;陕西省一流专业建设项目;西北大学本科人才培养建设项目(XM05190493,XM05190808);西北大学课程思政建设专项(XM05201461)。

摘　　要：将一个提纯实验(粗食盐的提纯)、一个制备实验(纯碱的制备)和一个组成分析实验(混合碱中碳酸钠含量的测定)综合到一起,设计开发了一个大学化学综合与设计实验。在食盐提纯部分引入学生自主设计环节,在纯碱制备部分引入侯氏制碱工艺。通过该实验的实施,可使学生进一步巩固减压过滤、结晶、滴定等基本实验操作技能;掌握纯碱制备中涉及的大量化学反应原理和操作方法;锻炼学生综合运用知识的能力,养成良好的科研素养。同时结合思政教育,有助于加强学生的爱国主义情怀以及对化学学科的兴趣和热情,培养学生立于当下解决实际问题的意识和能力。In this experiment,the purification of crude salt,the preparation of soda and the determination of sodium carbonate content in mixed alkali were integrated,and a comprehensive and designed experiment of university chemistry was developed.Students’independent design was introduced in the part of the purification of crude salt,and Hou’s soda production system was introduced in the part of the preparation of soda.The experiment can make the students to consolidate the basic operation skills such as vacuum filtration,crystallization,titration,mastering a large number of chemical reaction principles and methods involved in the preparation of the soda ash,to exercise the ability of comprehensive application of knowledge,and improve the comprehensive innovation quality.Meanwhile,combining with ideological education,it can also help stimulate students’patriotic feelings and interest and enthusiasm of chemistry discipline,and cultivate students’awareness and ability to solve practical problems.

关 键 词：纯碱 侯氏制碱法 食盐的自主设计提纯 综合设计实验 

分 类 号：G64[文化科学—高等教育学] O6[文化科学—教育学]