Silver nanocluster in zeolites. ADSORPTION of ETHYLENE traces for fruit preservation

doi:10.1016/j.micromeso.2019.03.032

Microporous and Mesoporous Materials

Volume 283, 15 July 2019, Pages 25-30

https://doi.org/10.1016/j.micromeso.2019.03.032 Get rights and content

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Highlights

•Ag nanoparticles supported on zeolites were synthesized for removal of trace ethylene amounts for fruit preservation.
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A good correlation between Ag^δ+ species and ethylene adsorption capacity could be obtained.
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The highest ethylene adsorption of Ag-SSZ13 could be associated to an excellent stabilization of Ag^δ+ species into its pores.

Abstract

Removal of trace amounts of C₂H₄ from air streams at low temperature is technologically important for fruit preservation in warehouses. For that reason, a systematic quantitative and comparative study of Ag-zeolites for trace ethylene adsorption has been carried out. Combining characterization results with trace ethylene adsorption in a fixed-bed system have allowed to stablish a correlation between Ag^δ+ species present in the zeolites and trace ethylene adsorption capacity. Among the zeolites studied, silver exchanged zeolites with -CHA (SSZ-13) and -LTA (5A) frameworks exhibited the most stable and highly dispersed silver sites, with an excellent potential for indoor environmental control of trace ethylene at 0 °C.

Graphical abstract

Keywords

Ethylene

Microporous zeolites

Cited by (0)

: Dedicated to Doctor Joel Patarin on the occasion of his retirement after 34 years of research in the field of zeolites and related materials.

¹: Larisha Cisneros (present address): Technische Universität München Department Chemie. Lichtenbergstr. 4. D-85748 Garching, Germany.