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Chemical complexation, in which certain metal ions (especially Ag+ and Cu+) reversibly and selec-tively complex olefin isomers, was used to separate 1-hexene from a mixture of internal hexenes as an at-tractive alternative to traditional distillation. Several potential reactive extractants were investigated for their selectivity of both 1-hexene to 2-hexene and 1-hexene to 3-hexene. With 3 mol/L AgNO3-N-methyl-pyr-rolidone (NMP) solution as extractant, the selectivity of 1-hexene to 3-hexane was increased to about 2.0 and the selectivity of 1-hexene to 2-hexene reached 1.5. Both the raffinate phase and the extracted phase were analyzed using a gas chromatograph equipped with a flame ionization detector and a 50-m capillary column. The experimental results show that the silver nitrate NMP solution has the better selectivity than other reac-tive extractions.
Chemical complexation, among which certain metal ions (especially Ag + and Cu +) reversibly and selec-tively complex olefin isomers, was used to separate 1-hexene from a mixture of internal hexenes as an at-tractive alternative to traditional distillation. were investigated for their selectivity of both 1-hexene to 2-hexene and 1-hexene to 3-hexene with 3 mol / L AgNO3-N-methyl- pyr-rolidone (NMP) solution as extractant, the selectivity of 1-hexene to 3-hexane was increased to about 2.0 and the selectivity of 1-hexene to 2-hexene reached 1.5. Both the raffinate phase and the extracted phase were analyzed using a gas chromatograph equipped with a flame ionization detector and a 50-m capillary column The experimental results show the silver nitrate NMP solution has the better selectivity than other reac-tive extractions.