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发帖数: 339 | 1 【 以下文字转载自 Chemistry 讨论区 】
发信人: y13560407813 (xx), 信区: Chemistry
标 题: 求助：请问大家哪里能买到直径小于1微米的蒙脱土？
发信站: BBS 未名空间站 (Thu Feb 7 12:28:09 2013, 美东)
如题。我们做实验需要用小颗粒的蒙脱土或者类似的具有层状结构的clay。颗粒直径越
小越好，20nm-200nm都可以。谢谢大家了。 | Y**L
发帖数: 397 | 2 You can get different kinds of clays from Clay Minerals Society, the Source
Clays Repository. For very small size of Montmorillonite you need to purify
through dialysis by your own.
The Repository was originally housed at the University of Missouri but moved
to Purdue University (Indiana, USA) in August 2002, where it currently
resides.
The Source Clays Repository contains two types of materials, the Source
Clays and the Special Clays. The Source Clays consist of 8 different
materials (KGa-1b, KGa-2, PFl-1, SHCa-1, STx-1b, SWy-2, Syn-1, and SAz-1)
available in 125 or 250 gram units.
For each Source Clay, sufficient raw sample was collected to provide one
metric ton of processed material. Each sample was dried at low temperature,
homogenized, and pulverized, and then stored in polyethylene bags. SAz-1 is
currently depleted, but it is planned to obtain additional material this
coming summer. The Special Clays consist of materials that have not been
homogenized. Since the move to Purdue, the Repository has shipped 6159 units
to countries throughout the world.
More information about the Source Clays is available on the Clay Minerals
Society website (www.clays.org). |
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