Molecular trees for green chemistry

Article Abstract:

New research that shows the use of a fluorinated dendrimer to extract hydrophilic compounds from water into liquid carbon dioxide (CO2) could considerably expand the use of CO2 as a solvent. Such 'smart' CO2 agents can extend CO2's ability as a solvent and could replace chlorinated liquids in cleaning operations. Other uses could include the extraction of pharmaceutical products from fermentation broths. Details of the study are presented.

Surface active agents, Solvents

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Green processing using ionic liquids and CO

Article Abstract:

It is been found that non-valatile organic compounds can be taken from ionic liquids using supercritical carbon dioxide. The carbon dioxide dissolves in the liquid, but the ionic liquid does not dissolve in carbon dioxide. The ionic liquid 1-butyl-3-methylimidazolium hexafluorphosphate (BMIM) (PF6) was synthesized, with the aim of showing that CO(sub2) could be used to extract naphthalene.

Usage, Carbon dioxide, Naphthalene, Ionic solutions, Organic solvents

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