Selectivity of Thiophene/Toluene Competitive Adsorptions onto NaY and NaX Zeolites

Autor:	C. Laborde-Boutet,†, A. Nicolaos, Guy Joly, Patrick Magnoux, and M. Thomas
Rok vydání:	2006
Předmět:	Sorbent General Chemical Engineering Inorganic chemistry General Chemistry Toluene Industrial and Manufacturing Engineering Flue-gas desulfurization chemistry.chemical_compound Adsorption chemistry Thiophene Molecule Selectivity Zeolite
Zdroj:	Industrial & Engineering Chemistry Research. 45:6758-6764
ISSN:	1520-5045 0888-5885
DOI:	10.1021/ie060168e
Popis:	In the framework of research on desulfurization by adsorption, an experimental study of the adsorption selectivity between thiophene and toluene molecules in liquid n-heptane solutions onto NaY (Si/Al = 2.4) and NaX (Si/Al = 1.2) zeolites has been carried out. It investigates the possibility for these commercially available adsorbents to be used in a desulfurization process operated under ambient conditions without using H2. Dynamic adsorption experiments were performed at room temperature mainly at two concentration ranges: 25 mmol·L-1 for competitive adsorptions and 1.25 mmol·L-1 for single-solute experiments. Adsorption isotherms of thiophene and toluene on NaY and NaX sorbents have been obtained. On the NaY zeolite, toluene is favorably adsorbed (αthio/tol = 0.60) while an inverse behavior is observed with NaX sorbent (αthio/tol = 1.63). This exhibits many differences in sorbate/sorbent interactions with slight changes in the adsorbent nature. Besides, the selectivity on NaY sorbents has been found t...
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::4ec2ea83a0b074de808567cb37a254cd https://doi.org/10.1021/ie060168e Zobrazit plný text záznamu