Topic
Hexane
About: Hexane is a research topic. Over the lifetime, 3759 publications have been published within this topic receiving 57996 citations. The topic is also known as: CH3-[CH2]4-CH3 & hexyl hydride.
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TL;DR: In this article, the chemical characteristics and analytical separation process of the essential oil obtained from high pressure carbon dioxide extraction of Ilex paraguariensis were analyzed by gas chromatography coupled to mass spectrometry detection (GC/MS).
Abstract: This work presents a study concerning the chemical characteristics and analytical separation process of the essential oil obtained from high-pressure carbon dioxide extraction of Ilex paraguariensis. The experiments were performed in a laboratory-scale unit in the temperature range of 20–40 °C, from 100 to 250 bar. A blend of the I. paraguariensis extracts was percolated through a preparative chromatographic column, containing silica gel, and successively eluted with 150 mL of each of the following solvents: hexane, toluene, dichloromethane, ethyl acetate, acetone and methanol. The raw extract and its fractions were analyzed by gas chromatography coupled to mass spectrometry detection (GC/MS). The fractionation procedure showed to be a good clean up technique due to the isolation of different classes of compounds in each fraction. Chromatographic analyses allowed the identification of caffeine, fatty acids and esters, phytol, squalene, Vitamin E, stigmasterol derivatives and saturated hydrocarbons.
51 citations
TL;DR: In this article, a modified Frumkin isotherm (Ionic Compressibility) taking into account the mean activity of all ions in solution leads to a real improvement of the data interpretation.
51 citations
TL;DR: In this paper, a review of diffusivities in carbon tetrachloride and hexane at 25°C indicated that the diffusivity of essentially linear molecules were, in general, about 30 per cent higher than for substances composed of essentially spherical molecules having the same molar volume at the normal boiling point.
51 citations
TL;DR: In this article, a green solve is proposed to solve the problem of biodiesel production by using methanol and hexane in the process of making biodiesel, which is considered as one of the best resources to replace fossil fuels.
Abstract: Biodiesel is considered as one of the best resources to replace fossil fuels. There are a lot of mixtures of methanol and hexane in the process of biodiesel production. In this study, a green solve...
51 citations
51 citations