24小时热门版块排行榜

返回列表

当前只显示满足指定条件的回帖，点击这里查看本话题的所有回帖

kfwangguan

木虫 (小有名气)

应助: 2 (幼儿园)
金币: 1600.8
散金: 30
红花: 1
帖子: 198
在线: 66.9小时
虫号: 731627
注册: 2009-03-26
性别: GG
专业: 无机合成和制备化学

[交流] 【请教】请教一下这个生长晶体的奇怪方法到底是什么？谢谢已有2人参与

我们都知道一般晶体的生长方法有诸如 solvent evaporation，solution diffusion，hydrothermal conditions 等等，但是我看的这个文献上面说的合成方法里有rotorary evaporator 还有 centrifugation 什么的，里面加入有机溶剂分离沉淀的步骤又像是 decantation . 最后长出晶体那一步说的也不详细不知道什么长出来的。如果归纳他的合成方法是不是应该叫做solvent evaporation 呢？如果不是那应该叫做什么？

谢谢大家帮忙分析一下最后长出晶体用的是什么方法？

A mixture of a and b in 9 mL of water was refluxed for 45 min, after which the

volume of the solution was reduced to half on a rotorary evaporator. Addition of 5

mL of ethanol to the solution led to the formation of an orange precipitate of c,

which was separated by filtration. Addition of a few drops of ethanol to the

filtrate led to the formation of a fine yellow-orange powder, which was identified

as a mixture of compounds and was separated after centrifugation. In the resulting

solution, pale-yellow needle crystals of d appeared in a few hours.

[ Last edited by kfwangguan on 2010-8-24 at 13:14 ]

回复此楼