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Complex Extraction of Phenol and Cresol from Model Coal Tar with Polyols, Ethanol Amines, and Ionic Liquids Thereof

Authors :
Nannan Ren
Chang-Tao Ge
Wen-Yan Ma
Hong Meng
Yingzhou Lu
Chunxi Li
Source :
Industrial & Engineering Chemistry Research. 53:355-362
Publication Year :
2013
Publisher :
American Chemical Society (ACS), 2013.

Abstract

To develop a greener process for reclaiming phenolic compounds from low temperature coal tar, extractive performance of twelve extractants, including mono-, di-, and triethanol amines (MEA, DEA, TEA), six protonated ionic liquids (ILs) thereof with formate (FA) or acetate (Ac) anion, choline chloride, and two polyols (glycol, glycerol), were studied at varying conditions, along with the back extractability of phenols by ether. The extraction performance is MEA > DEA > TEA ≈ ILs > glycol > glycerol, while the back extraction performance of ether is just the opposite. The coexistent toluene in oil and temperature show a little influence on the extraction performance of alcoholic amines and their corresponding ILs. The extraction performance of extractants is consistent with their complexability with phenol, i.e. ethanol amines > ether > ILs > polyols, as manifested by the red shift of the UV spectrum of phenol in the above solvents. [HMEA]FA is the most promising extractant for its overall extraction perfor...

Details

ISSN :
15205045 and 08885885
Volume :
53
Database :
OpenAIRE
Journal :
Industrial & Engineering Chemistry Research
Accession number :
edsair.doi...........9f2f71a0385358521e499f98efada378
Full Text :
https://doi.org/10.1021/ie402599d