September 10, 2014
Procedures
Completing Film Synthesis
Continued from Wednesday, 9/3/2014<br.>
Procedure detailed by Dr Hartings
- Stir in Sodium Sulfate, 1% HCl, and Sodium Bicarbonate solutions
Exchanging Sodium in NaMT for Organic Cation
Procedure detailed by Dr Hartings.<br.>
Assuming 92 miliequivalents (meq) of Na+ per 100g of montmorillonite.<br.>
- Add 1.12g of Sodium Montmorillonite (NaMT) to a scintillation vial containing 20mL of 50:50 HPLC grade water:ethanol.
- (1.12 g NaMT)×(92×10-3 eq/100 g NaMT)×(507.65 g/mol tributylhexadecylphhosphonium bromide)=0.523 g tributylhexadecylphosphonium bromide
- Add 0.523g of tributylhexadecylphosphonium bromide to exchange 100% of the Na from the clay
- 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
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