多年来制取甲烷时都是将无水醋酸钠与碱石灰以1:3相互混合,用酒精灯加热制得。按照这种方法制取甲烷时总会遇到两个难题:一是甲烷产率低,完不成有关实验;二是生成物中含有大量水蒸汽,点燃时很易熄灭。为了降低反应中的水分,许多资料主张,先将碱石灰、无水醋酸钠加热焙干。这固然可以减少试剂中所含水分,但操作麻烦颇费时间,如能采取以下措施,实验效果就 For many years, methane was prepared by mixing anhydrous sodium acetate with soda lime 1:3 and heating with an alcohol lamp. According to this method, methane is always encountered with two problems: First, the methane yield is low, and the relevant experiments are not completed; second, the product contains a large amount of water vapor, which is easily extinguished when it is ignited. In order to reduce the moisture in the reaction, many sources claim that the soda lime and anhydrous sodium acetate are first dried by heating. This of course can reduce the moisture content of the reagents, but the operation is troublesome and time-consuming, if you can take the following measures, the experimental results