Two experimental methods to study adsorption equilibria of xylene isomers in the liquid phase on a Y zeolite

✍ Scribed by H. Tournier; A. Barreau; B. Tavitian; D. Le Roux; C. Sulzer; V. Beaumont

• Publisher: Elsevier Science
• Year: 2000
• Tongue: English
• Weight: 278 KB
• Volume: 39
• Category: Article
• ISSN: 1387-1811
• DOI: 10.1016/s1387-1811(00)00229-8

✦ Synopsis

Two experimental complementary techniques for the study of the adsorption of a binary liquid mixture p-xylene/mxylene on a dehydrated KBaY zeolite at 50°C are described in this paper: (1) a classical method using a gas chromatograph (GC) allowed us to measure selectivities in the concentration range [3%, 95%] p-xylene; (2) an original method using a GC±combustion (C)-isotopic ratio mass spectrometer (IRMS) and 13 C labeled xylenes was developed to investigate the ranges of strongly contrasting concentrations [0%, 3%] and [95%, 100%] p-xylene, which are representative of high purity domains. Both techniques are based on the use of an inert component to perform mass balance calculations and analyses of the liquid phase after adsorption. Comparison tests were carried out between the two techniques, and the results are satisfactory. Lastly, the Langmuir±Freundlich model yielded a good representation of our adsorption data.