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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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Journal ArticleDOI
TL;DR: In this paper, a global overview of the adsorption behavior of hexane isomers on MFI is presented, which couples a manometric technique with Near Infrared (NIR) spectroscopy.
Abstract: In this study we present a global overview of the adsorption behavior of hexane isomers on MFI. With an experimental approach that couples a manometric technique with Near Infrared (NIR) spectroscopy, which has been recently developed, we did address adsorption kinetic properties of n-hexane, 2-methylpentane, 2,2-dimethylbutane and 2,3-dimethylbutane, and their binary mixtures. The adsorption equilibrium properties of the binary mixtures were also assessed using the same technique. Whereas the adsorption isotherms and heats of adsorption for single components have been studied by a manometric technique coupled with a micro calorimeter. The differential heats of adsorption of n-hexane increase slightly with loading, on the other hand the heat of adsorption of branched hexanes exhibits a decrease with loading. The diffusion rates on MFI of n-hexane, 2-methylpentane and 2,3-dimethylbutane are in the same order of magnitude. However, the diffusion rate of 2,2-dimethylbutane is two orders of magnitude lower than rates of the other isomers. In the binary mixtures the components interact and the difference between the diffusion rates of the components decreases. The MFI zeolite presents equilibrium selectivity towards the less branched isomers. In conclusion, a separation process for linear/mono-branched alkanes + double-branched alkanes, has to be based on its equilibrium properties and not based on adsorption kinetics.

32 citations

01 Jan 2011
TL;DR: In this article, the authors explored the possibility of using ethanol as a non toxic and green solvent in place of nhexane and found that at temperature of 45 o C and solvent to solid ratio of more than 10, ethanol has oil extraction efficiency comparable to hexane.
Abstract: Cottonseed is a rich source of oil and protein. Cottonseed oil has gained importance as heart healthy oil as it contains lots of un-saturates. It is accepted as a better medium for frying foods. Presently, n-hexane is the solvent of choice in most of the solvent extraction plants though it has been graded as highly toxic and hazardous for the environment. The present study is undertaken to explore the possibility of using ethanol as a non toxic and green solvent in place of nhexane. The extraction of cottonseed at different temperatures, solvent-solid ratio and particle size at different time intervals using the two solvents is presented to compare the extraction efficiency of the two solvents. The results indicate that at temperature of 45 o C and solvent to solid ratio of more than 10, ethanol has oil extraction efficiency comparable to hexane. The meal produced in the extraction process is found to have lower gossypol content when ethanol is used.

32 citations

Journal ArticleDOI
TL;DR: In this paper, the coexistence curves of the liquid−liquid equilibria (LLE) for systems of dimethylformamide (DMF) with hexane, heptane, octane or nonane have been determined visually.
Abstract: The coexistence curves of the liquid−liquid equilibria (LLE) for systems of dimethylformamide (DMF) with hexane, heptane, octane, or nonane and of dimethylacetamide (DMA) with heptane have been determined visually. All the curves show an upper critical solution temperature (UCST) and have a rather horizontal top. The measured LLE curves for DMF mixtures show that their symmetry depends on the size of the alkane. For a given alkane, the UCST is higher for systems with DMF. This reveals that dipole−dipole interactions between amide molecules are stronger in such solutions. The DISQUAC model represents fairly well the LLE curves.

32 citations

Journal ArticleDOI
TL;DR: In this article, multi-walled carbon nanotubes (MWCNTs) were prepared by spray pyrolysis, using hexane as a carbon source and ferrocene as a catalyst precursor, followed by purification with acid leaching and air oxidation.

32 citations

Journal ArticleDOI
TL;DR: In this paper, the adsorption of several hydrocarbons by MIL-101(Cr) was investigated by means of gas chromatography equipped with a filled column of the MOF.

32 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023205
2022429
202186
202092
201999
201891