User:Melvin Colorado Escobar/Notebook/581/2014/09/10

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Objective

Finish film preparation and begin preparation of ionic liquid modified clays.

Description

We 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.

  1. Add 1.1g of Sodium Montmorillonite (NaMT) to a scintillation vial containing 20mL of 50:50 HPLC grade water:ethanol.
    1. 1.104g of NaMT
  2. Determine the amount of cation to add if using either tributylhexadecylphosphonium bromide or (1-hexadecyl)triphenylphosphonium bromide to exchange 100% of the Na from the clay.
    1. 0.5733g of (1-hexadecyl)triphenylphosphonium bromide
  3. Add this amount of phosphonium ion to the clay solution.
  4. Cap the vial
  5. Stir for 1 week.
  6. Vacuum filter using 0.2uM nylon filter paper
  7. Dry in oven at 90C overnight
  8. Grind with a mortar and pestle.
  9. Store in a dessicator


Here's an excellent paper on good graphing procedures.

Exchange of sodium montmorillonite for an organic cation 1-hexadecyl)triphenylphosphonium bromide

  1. Add 1.1014g of Sodium Montmorillonite (NaMT) to a scintillation vial containing 20mL of 50:50 HPLC grade water:ethanol.
  2. Determine the amount of cation to add if using either tributylhexadecylphosphonium bromide or (1-hexadecyl)triphenylphosphonium bromide to exchange 100% of the Na from the clay.
  3. Add this amount of phosphonium ion to the clay solution.
  4. Cap the vial
  5. Stir for 1 week.
  6. Vacuum filter using 0.2uM nylon filter paper
  7. Dry in oven at 90C overnight
  8. Grind with a mortar and pestle.
  9. Store in a dessicator

Preparation of XRD film

  1. Powder XRD will be taken of the plane NaMT
  2. XRD of a plane PVA film will also be taken
  3. XRD of a film soaked in 2ppm, 8ppm, 80ppm, and 200ppm will also be taken
    1. 200ppm, this film was prepared by Michael Bible's Notebook
    2. 80ppm, A PVA-film was soaked in 10mL of 80ppm and left to soak until XRD analysis
    3. 8ppm, This film was prepared by Madeline Bee's Notebook
    4. 2ppm, this film was prepared by James Schwabacher's Notebook


  • This data will allow us to discover which layer of the film the dye is being absorbed first, as well as any changes in the clay structure.

Data

  • Add data and results here...

Notes

This area is for any observations or conclusions that you would like to note.


Use categories like tags. Change the "Course" category to the one corresponding to your course. The "Miscellaneous" tag can be used for particular experiments, as instructed by your professor. Please be sure to change or delete this tag as required so that the categories remain well organized.




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