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木虫 (正式写手)


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可能和氨水还有你把他放在烘箱中干燥导致一部分变质或者焦化
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11楼2010-06-28 22:04:51
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americanyk

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小木虫(金币+0.5):给个红包,谢谢回帖交流
催化大师(金币+1):谢谢指点,欢迎常来催化版讨论! 2010-06-29 09:30:00
In fact, it was due to the pH value of the impregnated solution, which is not suitable for your support or it is too high. You can change the solution. The best and easy way is to use supercritical mathods. It is very easy to get homogeneous phase and very small particles.
12楼2010-06-28 22:31:30
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liunan433

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你是说用超临界方法做催化剂吗?这个我没听说过,我现在用的实验的条件很简单,你说的方法会对实验条件要求很高吗?求详细解答,多谢了
引用回帖:
Originally posted by americanyk at 2010-06-28 22:31:30:
In fact, it was due to the pH value of the impregnated solution, which is not suitable for your support or it is too high. You can change the solution. The best and easy way is to use supercritical ...

志在山顶的人,不会贪恋山腰的风景
13楼2010-06-29 10:38:34
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shuipei807

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除了载体原因,浸渍也也有关吧!
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14楼2010-06-29 10:48:17
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liunan433

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浸渍过程会有什么问题呢?我是把载体导入浸渍液中并磁力搅拌,每次都是这样操作,但导入载体后颜色稍有变化,不同PH的浸渍液加入载体后颜色不大一样,这有影响吗?
引用回帖:
Originally posted by shuipei807 at 2010-06-29 10:48:17:
除了载体原因,浸渍也也有关吧!

志在山顶的人,不会贪恋山腰的风景
15楼2010-06-29 11:01:20
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shuipei807

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小木虫(金币+0.5):给个红包,谢谢回帖交流
我也是做载体的,但是我都是等体积浸渍。你如果可以用磁力搅拌,是不是浸渍液过量有关呀!
学别人最好,做自己更好!
16楼2010-06-29 12:26:48
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americanyk

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^_^@^_^(金币+1):QQQ 2010-07-07 23:32:08
引用回帖:
Originally posted by liunan433 at 2010-06-29 03:38:34:
你是说用超临界方法做催化剂吗?这个我没听说过,我现在用的实验的条件很简单,你说的方法会对实验条件要求很高吗?求详细解答,多谢了

It is very easy. Just put the liquid or compressed gas into autoclave and then heated at desired temperature for impregnation serveral hours and then reduced. You can directly get the solid nanoparticles.
17楼2010-06-29 13:43:51
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liunan433

金虫 (小有名气)

还是不大明白,难道是把浸渍液和载体放在高压釜中加热到一定温度吗?能不能给几篇文献看看呀?我孤陋了
引用回帖:
Originally posted by americanyk at 2010-06-29 13:43:51:

It is very easy. Just put the liquid or compressed gas into autoclave and then heated at desired temperature for impregnation serveral hours and then reduced. You can directly get the solid nanop ...

志在山顶的人,不会贪恋山腰的风景
18楼2010-06-29 14:20:00
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liunan433

金虫 (小有名气)

不是等体积浸渍,但是浸渍后没有过滤洗涤过程,陈化一段时间就去烘干了,本质上也跟等体积是一样的吧,因为我觉得等体积浸渍不均匀
引用回帖:
Originally posted by shuipei807 at 2010-06-29 12:26:48:
我也是做载体的,但是我都是等体积浸渍。你如果可以用磁力搅拌,是不是浸渍液过量有关呀!

志在山顶的人,不会贪恋山腰的风景
19楼2010-06-29 14:21:53
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americanyk

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^_^@^_^(金币+2):感谢应助! 2010-07-07 23:31:43
引用回帖:
Originally posted by liunan433 at 2010-06-29 07:20:00:
还是不大明白,难道是把浸渍液和载体放在高压釜中加热到一定温度吗?能不能给几篇文献看看呀?我孤陋了

1.Design of functional nanostructured materials using supercritical fluids
The Journal of Supercritical Fluids, Volume 47, Issue 3, January 2009, Pages 508-516
François Cansell, Cyril Aymonier
2.Rapid synthesis of γ-Al2O3 nanoparticles in supercritical water by continuous hydrothermal flow reaction system
The Journal of Supercritical Fluids, Volume 46, Issue 2, September 2008, Pages 129-136
Takio Noguchi, Keitaro Matsui, Nazrul M. Islam, Yukiya Hakuta, Hiromichi Hayashi
3.Vegetable fat hydrogenation in supercritical-fluid solvents: Melting behavior analysis by DSC and NMR
The Journal of Supercritical Fluids, Volume 46, Issue 3, October 2008, Pages 322-328
A. Santana, X. Fernández, M.A. Larrayoz, F. Recasens

4.   
Preparation of metallic supported nanoparticles and films using supercritical fluid deposition
The Journal of Supercritical Fluids, Volume 47, Issue 3, January 2009, Pages 517-522
Can Erkey
20楼2010-06-29 16:45:19
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