Superporous P(2-hydroxyethyl methacrylate) cryogel-M (M:Co, Ni, Cu) composites as highly effective catalysts in H2 generation from hydrolysis of NaBH4 and NH3BH3

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dc.authoridŞahiner, Nurettin / 0000-0003-0120-530X
dc.contributor.authorSeven, Fahriye
dc.contributor.authorŞahiner, Nurettin
dc.date.accessioned2025-01-27T20:58:30Z
dc.date.available2025-01-27T20:58:30Z
dc.date.issued2014
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractHighly porous p(2-hydroxyethyl methacrylate) p(HEMA) cryogels were synthesized via cryopolymerization technique and used as template for Co, Ni, and Cu nanoparticle preparation, then as composite catalyst systems in H-2 generation from hydrolysis of both NaBH4 and NH3BH3. Due to their highly porous and open microstructures, p(HEMA)-Co cryogel composites showed very effective performances in H-2 production from hydrolysis of both chemical hydrides. The characterization of p(HEMA) cryogels, and their metal composites was determined via various techniques including swelling experiments, digital camera images, SEM and TEM images, AAS and TGA measurements. The effect of various parameters on the hydrolysis reaction of NaBH4 such as metal types, concentration of chemical hydrides, amounts of catalyst, alkalinity of reaction medium and temperature were investigated in detail. It was found that Co nanoparticles are highly active catalysts in H-2 generation reactions from both hydrides. The hydrogen generation rate (HGR) of p(HEMA)-Co was 1596 (mL H-2) (min)(-1) (g of Co)(-1) which is quite good in comparison to reported values in the literature. Furthermore, kinetic parameters of p(HEMA)-Co metal composites such as energy, enthalpy and entropy were determined as Ea = 37.01 kJmol(-1), Delta H# = 34.26 kJmol(-1), Delta S# = -176,43 Jmol(-1) K-1, respectively. Copyright (C) 2014, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
dc.description.sponsorshipScientific and Technological Research Council of Turkey [113T042]
dc.description.sponsorshipThis work is supported by the Scientific and Technological Research Council of Turkey (113T042).
dc.identifier.doi10.1016/j.ijhydene.2014.07.093
dc.identifier.endpage15463
dc.identifier.issn0360-3199
dc.identifier.issn1879-3487
dc.identifier.issue28
dc.identifier.scopus2-s2.0-84908240175
dc.identifier.scopusqualityQ1
dc.identifier.startpage15455
dc.identifier.urihttps://doi.org/10.1016/j.ijhydene.2014.07.093
dc.identifier.urihttps://hdl.handle.net/20.500.12428/26720
dc.identifier.volume39
dc.identifier.wosWOS:000342861500018
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherPergamon-Elsevier Science Ltd
dc.relation.ispartofInternational Journal of Hydrogen Energy
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectCryogel/hydrogel reactor
dc.subjectSuperporous hydrogel
dc.subjectChemical hydrides
dc.subjectH-2 production
dc.subjectHydrogen energy
dc.titleSuperporous P(2-hydroxyethyl methacrylate) cryogel-M (M:Co, Ni, Cu) composites as highly effective catalysts in H2 generation from hydrolysis of NaBH4 and NH3BH3
dc.typeArticle

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