Description of reaction: Isomerization of Glucose to Fructose and dehydration of Fructose to HMF. In my case the salts affect the catalyst, hence I would like to know if there are alternative chemicals/non-salts to extract HMF from aqueous phase to organic phase?
An optional way is to do multiple extract steps using the same formula (extraction solution). e.g. If you extract HMF using 90 mL organic solvent one time, you can extract using 30 mL organic solvent but three times. You can get a higher total extraction efficiency in the latter one. If you want to know the reason, you can read the topic about liquid liquid extraction.
The HMF extraction will happens anyways, with or without salt. By saturating the aqueous layer with salt you decrease the HMF solubility in the aqueous layer and improve the extraction coefficient. Adding non inorganic compounds to saturate the aqueous layer might be a problem, since it can also be extracted by the organic layer.
Keep in mind that you can always modify the organic solvent (or increase its volume, as already mentioned) in order to improve the extraction
Thank you Dr. Liao and Prof. Ribeiro. We will change/modify our system according to your valuable suggestions.
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