Adsorption of volatile organic compounds in composite zeolites pellets for space decontamination

FAU–*BEA-types zeolites pellets were elaborated with a hydraulic press in the presence of a small amount (5 wt%) of binder [methylcellulose (MC) or anhydrous sodium metasilicate (Na 2 SiO 3 )] for molecular decontamination, in particular for the space field. Nitrogen sorption–desorption revealed a s...

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Bibliographic Details
Published in:Adsorption : journal of the International Adsorption Society 2017-04, Vol.23 (2-3), p.395-403
Main Authors: Rioland, Guillaume, Nouali, Habiba, Daou, T. Jean, Faye, Delphine, Patarin, Joël
Format: Article
Language:English
Subjects:
Adsorption
Amorphization
Chemical Sciences
Chemistry
Chemistry and Materials Science
Compression loads
Cyclohexane
Decontamination
Engineering Thermodynamics
Heat and Mass Transfer
Hexanes
Hydraulic presses
Industrial Chemistry/Chemical Engineering
Mixtures
Nitrogen
Other
Pellets
Sodium silicates
Surfaces and Interfaces
Thin Films
VOCs
Volatile organic compounds
Zeolites
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Summary:FAU–*BEA-types zeolites pellets were elaborated with a hydraulic press in the presence of a small amount (5 wt%) of binder [methylcellulose (MC) or anhydrous sodium metasilicate (Na 2 SiO 3 )] for molecular decontamination, in particular for the space field. Nitrogen sorption–desorption revealed a small loss of micropore volume (10%) with a compression load of 6 tons (0.24 cm 3 /g instead of 0.27 cm 3 /g for the mixture of FAU and *BEA-types zeolites powders), which can be attributed to a partial amorphization. Adsorption kinetics of n -hexane, and cyclohexane showed that the optimum pellets can adsorb volatile organic compounds. For example, FAU–*BEA-type zeolite powder mixture (50 wt% of each zeolite) adsorb 130 mg of n -hexane per g of anhydrous zeolite whereas the pellets made with 5 wt% of MC or Na 2 SiO 3 adsorb about 117–118 mg of n -hexane per g of anhydrous zeolite. These results are coherent with the ones obtained with the cyclohexane and nitrogen adsorption where a small loss of the adsorption capacities was observed.
ISSN:0929-5607
1572-8757
DOI:10.1007/s10450-017-9870-9