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dc.contributor.authorLi, Xiansen
dc.contributor.authorNarayanan, Shankar
dc.contributor.authorMichaelis, Vladimir K.
dc.contributor.authorOng, Ta-Chung
dc.contributor.authorKeeler, Eric George
dc.contributor.authorKim, Hyunho
dc.contributor.authorMcKay, Ian
dc.contributor.authorGriffin, Robert Guy
dc.contributor.authorWang, Evelyn
dc.date.accessioned2017-03-27T18:12:40Z
dc.date.available2017-03-27T18:12:40Z
dc.date.issued2013-07
dc.date.submitted2013-03
dc.identifier.issn1387-1811
dc.identifier.urihttp://hdl.handle.net/1721.1/107729
dc.description.abstractModular and compact adsorption heat pumps (AHPs) promise an energy-efficient alternative to conventional vapor compression based heating, ventilation and air conditioning systems. A key element in the advancement of AHPs is the development of adsorbents with high uptake capacity, fast intracrystalline diffusivity and durable hydrothermal stability. Herein, the ion exchange of NaY zeolites with ingoing Mg[superscript 2+] ions is systematically studied to maximize the ion exchange degree (IED) for improved sorption performance. It is found that beyond an ion exchange threshold of 64.1%, deeper ion exchange does not benefit water uptake capacity or characteristic adsorption energy, but does enhance the vapor diffusivity. In addition to using water as an adsorbate, the uptake properties of Mg, Na-Y zeolites were investigated using 20 wt.% MeOH aqueous solution as a novel anti-freeze adsorbate, revealing that the MeOH additive has an insignificant influence on the overall sorption performance. We also demonstrated that the lab-scale synthetic scalability is robust, and that the tailored zeolites scarcely suffer from hydrothermal stability even after successive 108-fold adsorption/desorption cycles. The samples were analyzed using N[superscript 2] sorption, [superscript 27]Al/[superscript 29]Si MAS NMR spectroscopy, ICP-AES, dynamic vapor sorption, SEM, Fick’s 2nd law and D–R equation regressions. Among these, close examination of sorption isotherms for H[subscript 2]O and N[subscript 2] adsorbates allows us to decouple and extract some insightful information underlying the complex water uptake phenomena. This work shows the promising performance of our modified zeolites that can be integrated into various AHP designs for buildings, electronics, and transportation applications.en_US
dc.description.sponsorshipUnited States. Advanced Research Projects Agency-Energy (0471-1627)en_US
dc.description.sponsorshipNational Institute for Biomedical Imaging and Bioengineering (U.S.) (Awards EB-001960 and EB-002026)en_US
dc.description.sponsorshipNatural Sciences and Engineering Research Council of Canada (Postgraduate Fellowship)en_US
dc.language.isoen_US
dc.publisherElsevieren_US
dc.relation.isversionofhttp://dx.doi.org/10.1016/j.micromeso.2014.09.012en_US
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivs Licenseen_US
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/en_US
dc.sourcePMCen_US
dc.titleZeolite Y adsorbents with high vapor uptake capacity and robust cycling stability for potential applications in advanced adsorption heat pumpsen_US
dc.typeArticleen_US
dc.identifier.citationLi, Xiansen et al. “Zeolite Y Adsorbents with High Vapor Uptake Capacity and Robust Cycling Stability for Potential Applications in Advanced Adsorption Heat Pumps.” Microporous and Mesoporous Materials 201 (2015): 151–159.en_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Chemistryen_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Mechanical Engineeringen_US
dc.contributor.departmentFrancis Bitter Magnet Laboratory (Massachusetts Institute of Technology)en_US
dc.contributor.mitauthorLi, Xiansen
dc.contributor.mitauthorNarayanan, Shankar
dc.contributor.mitauthorMichaelis, Vladimir K.
dc.contributor.mitauthorOng, Ta-Chung
dc.contributor.mitauthorKeeler, Eric George
dc.contributor.mitauthorKim, Hyunho
dc.contributor.mitauthorMcKay, Ian
dc.contributor.mitauthorGriffin, Robert Guy
dc.contributor.mitauthorWang, Evelyn
dc.relation.journalMicroporous and Mesoporous Materialsen_US
dc.eprint.versionAuthor's final manuscripten_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dspace.orderedauthorsLi, Xiansen; Narayanan, Shankar; Michaelis, Vladimir K.; Ong, Ta-Chung; Keeler, Eric G.; Kim, Hyunho; McKay, Ian S.; Griffin, Robert G.; Wang, Evelyn N.en_US
dspace.embargo.termsNen_US
dc.identifier.orcidhttps://orcid.org/0000-0002-6708-7660
dc.identifier.orcidhttps://orcid.org/0000-0002-5290-5560
dc.identifier.orcidhttps://orcid.org/0000-0003-1589-832X
dc.identifier.orcidhttps://orcid.org/0000-0001-7045-1200
mit.licensePUBLISHER_CCen_US


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