Propane/propylene separation with Li-exchanged zeolite 13X

• Type: Article in International Scientific Journal
• Date: 2010

Authors

Carlos A. Grande (Author) FEUP; Jorge Gascon (Author) FEUP; Freek Kapteijn (Author) FEUP; Alírio E. Rodrigues (Adapter) FEUP

Journal

Title: Biochemical Engineering Journal

Vol. 160 No. 1

Pages: 207-214

ISSN: 1369-703X

Publisher: Elsevier

Indexing

ISI Web of Knowledge - 27 Citations

ISI Web of Science

Scopus - 24 Citations

INSPEC

COMPENDEX

Scientific classification

FOS: Engineering and technology > Chemical engineering

CORDIS: Technological sciences > Engineering > Chemical engineering

Other information

Authenticus ID: P-003-6PV

DOI: 10.1016/j.cej.2010.03.044

Abstract (EN): Selective adsorption of propylene from mixtures with propane over a lithium-exchanged zeolite 13X has been studied. Adsorption equilibrium of pure gases has been evaluated at three different temperatures by volumetric and gravimetric methods. Propylene is adsorbed preferentially over propane, particularly at low pressures. Adsorption equilibrium can be well described with the multi-site Langmuir and the Virial models. At 1 bar and 323 K, the amount adsorbed of propylene is 2.5 mol/kg while the loading of propane is 2.0 mol/kg. The dynamic behavior of the sample has also been evaluated on the bench scale in a fixed-bed for binary breakthrough performance. Macropore adsorption controls the diffusion process within the extrudates of the zeolite. The mathematical model could satisfactorily predict the behavior of the bed. The data obtained in this work allows to model any adsorption-based process for propane/propylene separation, like vacuum pressure swing adsorption and simulated moving bed.

Language: English

Type (Professor's evaluation): Scientific