[交流] Se粉如何才能溶解在油胺或者十八烯中，温度，时间怎么控制啊

2楼: Originally posted by cscsycy at 2012-03-28 08:23:01:
SeODE solution was prepared by adding 2-mmol Se and 20-mL ODE in a three-neck fl ask and then heating the mixture under nitrogen atmosphere at 200 °C for 2 h.

2楼: Originally posted by cscsycy at 2012-03-28 08:23:01:
SeODE solution was prepared by adding 2-mmol Se and 20-mL ODE in a three-neck fl ask and then heating the mixture under nitrogen atmosphere at 200 °C for 2 h.

4楼: Originally posted by fisherjj at 2012-03-28 09:37:32:
请问浓度还可以大点嘛？我试过这种方法但我配的浓度较高0.5m/L,加热到240℃也会有没有溶解的Se粉啊...

7楼: Originally posted by cscsycy at 2012-03-28 11:13:52:
可能是你的浓度太大了，但是5倍影响可能不是太大，可以尝试溶解时间长一点的，还有购买不同厂商的ODE试剂。

11楼: Originally posted by mitchem at 2012-03-28 16:03:53:
有一点点没溶解的也是可以的，我做的经常反应很长时间不管加多少总有那么一点不溶解的（不是杂质，se粉是sigma的纯度很高的了），直接过滤下，就可以了，不过这样se源的准确浓度就不清楚了，后面加多少就要自己在 ...

13楼: Originally posted by 天堂初秋 at 2012-03-28 23:15:31:
溶于ODE中，我们融，温度达到了240，而且时间比较长，耐心点

13楼: Originally posted by 天堂初秋 at 2012-03-28 23:15:31:
溶于ODE中，我们融，温度达到了240，而且时间比较长，耐心点

10楼: Originally posted by nanoli at 2012-03-28 15:52:42:
搜搜清华新上李院士的最近弟子的博士论文，中文的，说的很明白
另外,Se源可以用活性更高的Na2SeSO3代替
Se粉在亚硫酸钠水溶液中回流到黑色Se粉消失就行，用这个水溶液做Se源，反应条件温和的多
希望对你有帮助

17楼: Originally posted by jsjing at 2012-04-17 21:48:42:
你好，我想问一下，回流时间大概为多久？

19楼: Originally posted by nanoli at 2012-04-17 23:12:38:
3-5h

20楼: Originally posted by jsjing at 2012-04-18 21:15:59:
谢谢

17楼: Originally posted by jsjing at 2012-04-17 21:48:42:
你好，我想问一下，回流时间大概为多久？

23楼: Originally posted by 荧光量子点 at 2012-06-22 09:21:02
Se粉可以溶解在TOP或TBP的ODE溶液中啊。TOP就是助溶作用的，不用加热

24楼: Originally posted by weibaobao at 2012-07-13 15:24:53
TOP、TBP是啥东西...