New π-complexation adsorbents for propane-propylene separation

Carlos A. Grande, José D.P. Araujo, Simone Cavenati, Norberto Firpo, Elena Basaldella, Alírio E. Rodrigues

Research output: Contribution to journalArticlepeer-review

61 Scopus citations

Abstract

New adsorbents were prepared and tested for the separation of propane-propylene mixtures by adsorption. The ordered mesoporous material SBA-15 was used as the starting material for silver-ion deposition for π-complexation with propylene. Two different loadings of silver were evaluated. Adsorption equilibrium and kinetic measurements of propane and propylene in the matrix (pure SBA-15) and the silver-modified adsorbents were performed at 323, 343, and 373 K. In this temperature range, the selectivity of propylene in one of the materials (Ag/SBA-15 = 0.5) is in the range 13-22 because the amount of propane adsorbed is very small, 0.095 mmol/g of propane versus 1.12 mmol/g of propylene at 100 kPa and 343 K. The diffusivity of both hydrocarbons is not seriously affected by the introduction of silver into the mesoporous structure.
Original languageEnglish (US)
Pages (from-to)5291-5297
Number of pages7
JournalLangmuir
Volume20
Issue number13
DOIs
StatePublished - Jun 22 2004
Externally publishedYes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2022-09-13

ASJC Scopus subject areas

  • Spectroscopy
  • General Materials Science
  • Surfaces and Interfaces
  • Electrochemistry
  • Condensed Matter Physics

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