Hi, everyone.
I am starting to work with fractionation of Biomassa by Deep Euthetic Solvents .
I came across a DES that is comprised of Lactic acid: Glucose:water (molar ratio 5:1:3), as in ref. Article Tailoring properties of natural deep eutectic solvents with ...
My problem beguns as I found out lactic acid is sold only as a 85% (w/w) solution. So when I do the math, I will have a surplus of water.
My idea is to do a reduced pressure destilation of the lactic acid to remove water and obtain pure lactic adic, and then add water and glucose on the proper molar ratios.
Anyone out there that has experience with that, is it the proper approach? Any other ideas?
Thanks.
Carlos
Calculatethe amount of each component that corresponds to defined molar ratio. First look on these 85% mixture reveals that you should have no problems without vacuum distill. (assuming that water content is stable). However, to precisely control the water content you can use the suggested approach.
Regards
GB
Thanks a lot. Yes, my math here says I will need to distill it. Gonna try it. Thanks, @grzegorz.
dear Carlos Frederico De Souza Castro
If possible, use pure lactic acid. The presence of water in the solvent must be calculated in terms of weight and may cause problems.
First, calculate the molar ratio that you want according to the molecular weight of each material.
Next, place all materials in a 50 ml vial container
Place the vial on the stirrer.
Set the speed ratio of the device to 200 rpm.
The temperature should be 80 degrees Celsius.
Depending on the material you are using, it will take between 60 and 90 minutes for the material to melt and form a clear, uniform solvent.
Once the liquid is clear, the eutectic solvent is finished.
In the sent images, the clear liquid formed is visible.
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