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dc.creatorHolclajtner-Antunović, Ivanka
dc.creatorBajuk-Bogdanović, Danica
dc.creatorPopa, Alexandru
dc.creatorNedić-Vasiljević, Bojana
dc.creatorKrstić, Jugoslav
dc.creatorMentus, Slavko
dc.creatorUskoković-Marković, Snežana
dc.date.accessioned2019-09-02T11:48:48Z
dc.date.available2019-09-02T11:48:48Z
dc.date.issued2015
dc.identifier.issn0169-4332
dc.identifier.urihttp://farfar.pharmacy.bg.ac.rs/handle/123456789/2470
dc.description.abstractThe objective of this study is the structural and morphological characterization of the Ag3PW12O40 salts (AgWPA) of 12-tungstophosphoric acid (WPA) obtained under different preparation conditions and testing of their acid catalytic activity in dehydration of ethanol. The structure, morphology and physicochemical characteristics were determined by Fourier transform infrared (FT-IR) and Raman spectroscopy, X-ray diffraction (XRD), nitrogen physisorption at +/- 196 degrees C, scanning electron microscopy (SEM) and differential thermal (DTA) and thermogravimetric analysis (TGA). It is shown that the preparation process has a significant influence on the morphological properties of the obtained materials which may be explained by the supposed mechanism of the formation of nanocrystallite's aggregates with more or less epitaxial connection. Neutral AgWPA obtained by filtration from supernatant forms porous aggregates of a symmetric dodecahedral shape, having average sizes about 2 mu m. This sample shows higher specific area in comparison with the salt obtained by evaporation due to the higher micropore volume, while mesopore volumes are the same for both salts. Thus conversion of ethanol and selectivities of the main products, ethylene and diethyl ether, are almost the same and constant for both prepared salts, while their values are changed over the reaction time for the parent WPA acid.en
dc.publisherElsevier Science BV, Amsterdam
dc.relationinfo:eu-repo/grantAgreement/MESTD/Basic Research (BR or ON)/172043/RS//
dc.rightsrestrictedAccess
dc.sourceApplied Surface Science
dc.subjectSilver tungstophosphateen
dc.subjectFiltration and evaporationen
dc.subjectCatalytic activityen
dc.subjectDehydrogenation of ethanolen
dc.titleStructural, morphological and catalytic characterization of neutral Ag salt of 12-tungstophosphoric acid: Influence of preparation conditionsen
dc.typearticle
dc.rights.licenseARR
dcterms.abstractБајук-Богдановић, Даница; Холцлајтнер-Aнтуновић, Иванка; Крстић, Југослав; Попа, Aлеxандру; Недић-Васиљевић, Бојана; Ментус, Славко; Ускоковић-Марковић, Снежана;
dc.citation.volume328
dc.citation.spage466
dc.citation.epage474
dc.citation.other328: 466-474
dc.citation.rankaM21
dc.identifier.wos000349615800060
dc.identifier.doi10.1016/j.apsusc.2014.12.062
dc.identifier.scopus2-s2.0-84922211048
dc.identifier.rcubconv_3266
dc.type.versionpublishedVersion


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