引用本文:
袁呈山, 李小龙, 杨秀平, 邵向锋, 刘子桐, 王晓磊, 沈永雯. 有机化学实验混合溶剂重结晶操作规范建议[J]. 大学化学,
2025, 40(5): 122-127.
doi:
10.12461/PKU.DXHX202504073
Citation: Chengshan Yuan, Xiaolong Li, Xiuping Yang, Xiangfeng Shao, Zitong Liu, Xiaolei Wang, Yongwen Shen. Standardized Operational Guidelines for Mixed-Solvent Recrystallization in Organic Chemistry Experiment[J]. University Chemistry, 2025, 40(5): 122-127. doi: 10.12461/PKU.DXHX202504073
Citation: Chengshan Yuan, Xiaolong Li, Xiuping Yang, Xiangfeng Shao, Zitong Liu, Xiaolei Wang, Yongwen Shen. Standardized Operational Guidelines for Mixed-Solvent Recrystallization in Organic Chemistry Experiment[J]. University Chemistry, 2025, 40(5): 122-127. doi: 10.12461/PKU.DXHX202504073
有机化学实验混合溶剂重结晶操作规范建议
English
Standardized Operational Guidelines for Mixed-Solvent Recrystallization in Organic Chemistry Experiment
Abstract:
Mixed-solvent recrystallization is a commonly used and highly selective purification method. However, systematic operational guidelines are still lacking in current teaching, and students often encounter issues such as inappropriate solvent selection or improper techniques, resulting in failed crystallization or low purity. This paper outlines the basic principles and procedures of mixed-solvent recrystallization, clarifies key steps including solvent selection, decolorization, hot filtration, and crystallization induction, and proposes practical guidelines. These recommendations are feasible and widely applicable, offering a reference for standardizing laboratory instruction.
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兰州大学化学化工学院, 化学国家级实验教学中心(兰州大学). 大学化学实验-基础化学实验I. 第2版. 兰州: 兰州大学出版社, 2011.
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钱雪伟, 孙兴文, 李厚金, 刘占祥, 郑媛, 吴琳, 蔡双莲, 熊英, 余广鳌, 刘庆文, 等. 大学化学, 2025, 40 (5), 66.
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郑媛, 李厚金, 刘占祥, 吴琳, 蔡双莲, 熊英, 余广鳌, 孙兴文, 刘庆文, 韩杰, 等. 大学化学, 2025, 40 (5), 84.
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