Research on CO2 Adsorption Characteristics of Hydrophobic ZSM-5 Adsorbent

doi:10.3780/j.issn.1000-758X.2012.02.003

›› 2012, Vol. 32 ›› Issue (2): 17-21.doi: 10.3780/j.issn.1000-758X.2012.02.003

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Research on CO₂ Adsorption Characteristics of Hydrophobic ZSM-5 Adsorbent

WANG Xi-Qin, LI Kai, LUAN Zhi-Qiang, YE Ping-Wei

(Research Institute of Chemical Defense, Beijing 100191)

Received:2011-09-26 Revised:2012-04-25 Published:2012-04-25 Online:2012-04-25

Abstract

Abstract: ThetraditionalCO₂removalmethodwith 5A zeolite molecular sieve will lose efficacy because of the strong affinity with the water vapor.Ahydrophobic ZSM-5 adsorbent was preparedbyamixtureofZSM5,silicasol,waterandadditives,followedbyprocessesofextrusion,dryingandthenhydrophobicmodification.Thestructuresandpropertiesoftheadsorbentwere analyzed by N₂, H₂O/CO₂adsorptionisothermsandXRDanalysismethods.Thepreparedadsorbenthasmultilevelpore structure,highBETspecificsurfacearea(296m²/g) andbetterCO₂adsorptionperformance,aswell asexcellenthydrophobicity, and the H₂O equilibriumadsorptioncapacityisabout1% of weightevenundertheconditionof90%relativehumidity.

Key words: Zeolite, Molecular sieve, Adsorbent, Hydrophobic modification, Manned spacecraft

WANG Xi-Qin, LI Kai, LUAN Zhi-Qiang, YE Ping-Wei. Research on CO₂ Adsorption Characteristics of Hydrophobic ZSM-5 Adsorbent[J]. , 2012, 32(2): 17-21.

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Research on CO₂ Adsorption Characteristics of Hydrophobic ZSM-5 Adsorbent

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