摘要
自制K型玻璃管,借助铜丝缠绕的电加热棒和希夫试剂对乙醇催化氧化实验进行改进。在K型玻璃管中,利用沾有希夫试剂的棉签检验反应生成的乙醛,比单纯闻气味的方法更科学、环保,运用电加热棒反复多次加热铜丝、喷雾瓶雾化乙醇、洗耳球鼓入空气增加乙醛产量。改进后的实验操作简单、现象明显,具有普适性。
关键词: 乙醇催化氧化;自制K型玻璃管;电加热棒;希夫试剂
Abstract
The experiment of catalytic oxidation of ethanol was improved with the help of electric heating rod wrapped with copper wire and Schiff reagent. In the K-type glass tube, the acetaldehyde generated by the reaction is tested by a cotton swab with Schiff's reagent, which is more scientific and environmentally friendly than simply smelling the smell. The copper wire is heated repeatedly by an electric heating rod, the ethanol is atomized by a spray bottle, and the ear ball is pumped into the air to increase the acetaldehyde production. The improved experiment has the advantages of simple operation, obvious phenomenon and universality.
Key words: Ethanol catalytic oxidation; Homemade K-type glass tube; Electric heating rod; Schiff reagent
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