理化高手請進~急:－線上遊戲排行榜2013/2014,進擊的巨人線上看,candy crush saga外掛,正妹寫真三圍

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理化高手請進~急

Sep 14th 2013, 11:32

利用能溶糖卻不溶鹽的有機溶劑例如: 二甲基甲醯胺 (DMF: N,N-Dimethylformamide HCON(CH3)2), 吡啶(Pyridine: C5H5N), 四氫呋喃 (THF: Tetrahydrofuran C4H8O)或一些三級醇 (CR3OH), 把糖鹽混合物溶於其中, 再先經過濾取出食鹽, 然後再藉由蒸發得到糖.

利用熔點差將糖鹽分離理論上可行, 但我一直想不出一個可行的操作程序, 所以不想將它列出. 剛才泡茶時忽然想到解決方法, 提供各位參考一下.

先將糖鹽混合物放在細孔的鐵網中包好, 就像把茶葉包在泡茶用的鐵網球裡一樣, 將安定油脂, 如礦物油, 在加熱槽中加熱至攝氏 180 度, 糖的熔點, 把包著糖鹽混合物的鐵網放進油裡加熱, 糖就會溶解, 但是鹽會留在網子裡, 將鐵網和分離出來的鹽用有機溶劑, 例如正己烷清洗掉油脂後就可以得到純鹽. 將加熱槽中的油降溫, 此時糖會凝固回到固體而且密度會大於油而沉澱在底部, 將油倒掉並以正己烷清洗掉油脂, 剩下的就是純的糖了.

參考資料：大腦+知識家

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