Highly regenerable ionic liquid microgels as inherently metal-free green catalyst for H2 generation

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dc.authoridŞahiner, Nurettin / 0000-0003-0120-530X
dc.authoridBütün Şengel, Sultan / 0000-0001-7036-2224
dc.authoridDemirci, Şahin / 0000-0001-7083-1481
dc.authoridÖztürk, Ömer F. / 0000-0002-9244-6805
dc.contributor.authorÖztürk, Ömer F.
dc.contributor.authorDemirci, Şahin
dc.contributor.authorBütün Şengel, Sultan
dc.contributor.authorŞahiner, Nurettin
dc.date.accessioned2025-01-27T20:59:35Z
dc.date.available2025-01-27T20:59:35Z
dc.date.issued2018
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractPolymeric ionic liquid (PIL) microgel of poly([2-(methacryloyloxy)ethyl]trimethylammonium chloride) (p(MTMA)) was synthesized by using an inverse suspension polymerization technique. The anion-exchanged PIL microgels via chloride replacement from p(MTMA) were prepared as p(MTMA)-potassium thiocyanate (p(MTMA)-KSCN), p(MTMA)-sodium tetrafluoroborate (p(MTMA)-NaBF4), and p(MTMA)-sodium dicyanamide (p(MTMA)-NaN(CN)(2)) microgels by treatment with corresponding salts of potassium thiocyanate (KSCN), sodium tetrafluoroborate NaBF4, and sodium dicyanamide NaN(CN)(2) in aqueous media. The prepared microgels were found to be efficient metal-free catalysts, and their catalytic activity in H-2 production from the methanolysis of NaBH4 was investigated. Moreover, various parameters affecting H-2 production such as the effect of microgel size, the concentration of NaBH4, the effect of the anion in the microgel, the reusability of the microgel, and temperature were investigated. The Ea value calculated for the methanolysis reaction of NaBH4 catalyzed by p(MTMA) microgels was found as 24.1 +/- 0.7kJmol(-1) ranging from -15 to 45 degrees C, and this Ea value is lower than some Ea values for the same reaction. Interestingly, 10-time successive use of p(MTMA) microgel as catalyst in NaBH4 methanolysis reduced its catalytic activity to 49%, whereas the anion-exchanged forms of p(MTMA) microgel, p(MTMA)-KSCN, p(MTMA)-NaBF4, and p(MTMA)-NaN(CN)(2) only reduced their catalytic activity to 89, 86, and 79%, respectively, after 10 consecutive uses. Therefore, these anion-exchanged microgel catalysts are highly efficient in comparison with virgin p(MTMA) microgels for regenerable H-2 generation from the methanolysis of NaBH4.
dc.description.sponsorshipCanakkale Onsekiz Mart University [FBA-2016-1070]; Scientific and Technological Research Council of Turkey [TUBITAK-115M021]
dc.description.sponsorshipCanakkale Onsekiz Mart University, Grant/Award Number: FBA-2016-1070; Turkiye Bilimsel ve Teknolojik Arastirma Kurumu, Grant/Award Number: TUBITAK-115M021
dc.identifier.doi10.1002/pat.4254
dc.identifier.endpage1434
dc.identifier.issn1042-7147
dc.identifier.issn1099-1581
dc.identifier.issue5
dc.identifier.scopus2-s2.0-85040792827
dc.identifier.scopusqualityQ2
dc.identifier.startpage1426
dc.identifier.urihttps://doi.org/10.1002/pat.4254
dc.identifier.urihttps://hdl.handle.net/20.500.12428/26730
dc.identifier.volume29
dc.identifier.wosWOS:000430185000008
dc.identifier.wosqualityQ2
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherWiley
dc.relation.ispartofPolymers For Advanced Technologies
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectH-2 generation
dc.subjectmetal-free polymeric catalyst
dc.subjectmicrogel
dc.subjectpoly([2-(methacryloyloxy)ethyl]trimethylammonium chloride)
dc.subjectpolymeric ionic liquid
dc.titleHighly regenerable ionic liquid microgels as inherently metal-free green catalyst for H2 generation
dc.typeArticle

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