Supercritical carbon dioxide purification of n-octacosane obtained by chemical synthesis - Archive ouverte HAL Accéder directement au contenu
Poster De Conférence Année : 1998

Supercritical carbon dioxide purification of n-octacosane obtained by chemical synthesis

Résumé

The solubility of n-alkanes in supercritical carbon dioxide are well known in the literature. It is obvious to think that the solubility of diketone is lower than the solubility of n-octacosane. Unfortunately, the solubility of diketone is unknown but there are some data about the solubility of n-octacosane. The value is, for example, 2.18 10-3 (molar fraction) at P = 134.2 bars and at T = 45.4°C. The batch extraction experiments (P = 120 bars, T = 45°C) were realized with a poor quantity of feed, 100 mg, due to the synthesis. The experiments were not so easy because the feed and the solute are solid at atmospheric conditions. We try to optimize the separation and the withdrawn of the solute by using cyclonic separators. The purity of the extract was established by several ways : melting point, calorimetric analysis, gas chromatography, X-ray diffraction and compared with the commercial product.
Fichier principal
Vignette du fichier
poster.pdf (195.21 Ko) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-01500251 , version 1 (12-04-2017)

Licence

Paternité - Pas d'utilisation commerciale - Pas de modification

Identifiants

  • HAL Id : hal-01500251 , version 1

Citer

Danielle Barth, Marie Debacq, Alain Brembilla, Dominique Petitjean, Michel Dirand. Supercritical carbon dioxide purification of n-octacosane obtained by chemical synthesis. 5th Meeting on Supercritical Fluids, Mar 1998, Nice, France. pp.1005-1010. ⟨hal-01500251⟩
71 Consultations
35 Téléchargements

Partager

Gmail Facebook X LinkedIn More