Adsorption of propane and propylene in pellets and crystals of 5A zeolite

• Type: Article in International Scientific Journal
• Date: 2002

Authors

Carlos A. Grande (Author) FEUP; Alírio E. Rodrigues (Author) FEUP

Journal

Title: IECR

Vol. 41 No. 1

Pages: 85-92

Indexing

ISI Web of Knowledge - 39 Citations

ISI Web of Science

Scopus - 41 Citations

COMPENDEX

Scientific classification

CORDIS: Technological sciences > Technology > Biotecnology > Downstream processing

Other information

Authenticus ID: P-000-QMG

DOI: 10.1021/ie0104940

Abstract (EN): Equilibrium and kinetic data for propane and propylene adsorption in pellets (Grace Davison) and crystals (PQ Corp.) of 5A zeolite are presented in the temperature range 323-423 K. The pellet adsorption loading measured by gravimetry is 1.7 mmol/g for propylene and 1.3 mmol/g for propane at 100 kPa and 423 K. The selectivity for propylene increases with temperature and is in the range 1.08-1.35 at 100 kPa, being higher at lower pressures. The kinetic data measured by zero-length-column (ZLC) chromatography indicate that the transport of sorbate in the pellets is controlled by macropore diffusion; pore diffusivities are in the range 0.018- 0.027 cm2/s for both gases. Crystal diffusivities are in the range (1.1-7.2) × 10-11 cm2/s for propane and (0.2-6.2) × 10-11 cm2/s for propylene.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 8