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: Unexpectedly, the unsaturated FAME and TAG samples were found to elute more slowly at higher temperatures, a result just the opposite to the usual temperature effect noted in gas and most liquid chromatography systems.
82 citations
TL;DR: In this article, the transformation of n-hexane has been carried out under hydrogen pressure on a series of platinum-stabilized Y-zeolites with platinum contents varying from 0 to 17.7 wt% (platinum area ranging from 0, 10 m 2 g −1 ).
81 citations
TL;DR: In this article, d-Limonene, a safe agricultural byproduct, was used to extract rice bran oil and compared against hexane, a petroleum product widely used as a solvent for extracting edible oil.
Abstract: d-Limonene, a safe agricultural by-product, was used to extract rice bran oil and compared against hexane, a petroleum product widely used as a solvent for extracting edible oil. The yield of crude rice bran oils extracted with both solvents in percentage by weight was obtained. The quality of crude rice bran oil was analyzed. The yield and quality of crude rice bran oil from the limonene-based solvent extraction were almost equivalent to those from the hexane-based operation. The optimum solvent-to-rice bran ratio and extraction time required for d-limonene extraction of oil, based primarily on crude rice bran oil yield, have been determined to be 5:1 and 0.5 hr, respectively. Despite the absence of antioxidants during the limonene recovery step with vacuum evaporation, the quantity of the oxidation products in the recovered limonene was <1% (wt) of the original limonene solvent. The application of d-limonene solvent as an alternative to hexane in edible oil extraction could potentially eliminat...
81 citations
TL;DR: Comparison with Soxhlet and hot hexane extractions showed that the percentages of FAMEs are similar in all the extracts and they agree with the data in the bibliography.
80 citations
TL;DR: In this article, the structures of poly(3-alkylthiophenes) were studied by X-ray diffraction, IR spectroscopy, and organic vapor sorption.
Abstract: The structures of unoriented films of poly(3-alkylthiophenes) were studied by X-ray diffraction, IR spectroscopy, and organic vapor sorption. Side-chain crystallization takes place in these films when the alkyl groups contain 12 or more carbon atoms. The disordering of the side chain upon melting results in a large increase in the amount of hexane vapor absorbed by poly(3-tetradecylthiophene) (PTDT) when the temperature is raised to above the melting point. The effective distance of side-chain overlap, an measured by hexane as the diffusional probe, is estimated to be 6.7 A along the α-axis
80 citations