Extractive denitrogenization of liquid model fuel using polyethylene glycol methyl ether 350

Abstract

In the present study, we studied the effectiveness of the water-soluble polymer polyethylene glycol methyl ether 350 (PEG ME-350) on the extraction of nitrogen-containing heterocyclic compounds—quinoline and indole—from n-hexane. The dependences of the quantitative characteristics of the extraction of N-compounds on the contact time of the phases, the content of PEG ME-350 in the n-hexane–water system, the initial concentration of nitrogen-containing heterocyclic compounds in the organic phase, and the volumetric ratio of the phases were obtained. It has been established that PEG ME-350 is an effective extractant in the process of stepwise extraction of quinoline and indole, and the mechanisms of their extraction have also been proposed and proven. The results can be further used in the purification of light hydrocarbon fractions from nitrogen-containing heterocyclic compounds.