User:Eleni N. Kalivas/Notebook/CHEM-571/2014/09/10: Difference between revisions
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== | ==Objective== | ||
* | *Finish film synthesis | ||
*Start exchange of sodium montmorillonite for an organic cation | |||
==Description== | |||
We are going to exchange the sodium in the sodium montmorillonite for an organic cation. The procedures are taken from these two sources ([http://www.scirp.org/journal/PaperInformation.aspx?PaperID=17245#.VA5V9Et5_zY 1], [http://www.clays.org/journal/archive/volume%2010/10-1-153.pdf 2] along with Karlena Brown's thesis. We are working from the starting point that there are 92 miliequivalents (meq) of Na+ per 100g of montmorillonite. | |||
# Add 1.1014g of Sodium Montmorillonite (NaMT) to a scintillation vial containing 20mL of 50:50 HPLC grade water:ethanol. | |||
# Determine the amount of cation to add if using either [http://www.sigmaaldrich.com/catalog/product/aldrich/276200?lang=en®ion=US tributylhexadecylphosphonium bromide] or [https://us.vwr.com/store/catalog/product.jsp?product_id=7491057 (1-hexadecyl)triphenylphosphonium bromide] to exchange 100% of the Na from the clay. | |||
# Add this amount of phosphonium ion to the clay solution. | |||
# Cap the vial | |||
# Stir for 1 week. | |||
# Vacuum filter using 0.2uM nylon filter paper | |||
# Dry in oven at 90C overnight | |||
# Grind with a mortar and pestle. | |||
# Store in a dessicator | |||
Revision as of 06:27, 10 September 2014
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Objective
DescriptionWe are going to exchange the sodium in the sodium montmorillonite for an organic cation. The procedures are taken from these two sources (1, 2 along with Karlena Brown's thesis. We are working from the starting point that there are 92 miliequivalents (meq) of Na+ per 100g of montmorillonite.
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