Login for students

Login for employees

Publication detail

FTIR study of the interaction of crotyl alcohol and crotonic acid with surface of SiO2, TiO2 and ZrO2
Authors: Lochař Václav | Pytel Martin | Smoláková Lucie
Year: 2009
Type of publication: článek v odborném periodiku
Name of source: Scientific Papers of the University of Pardubice, Series A, Faculty of Chemical Technology
Publisher name: Univerzita Pardubice
Place: Pardubice
Page from-to: 121-127
Titles:
Language Name Abstract Keywords
cze FTIR studie interakce crotylalkoholu a kyseliny krotonové s povrchem SiO2, TiO2 and ZrO2 Byla studována adsorpce crotylalkoholu a kyseliny krotonové na SiO2, TiO2 and ZrO2 nosičích pomocí FTIR spektroskopie. Výsledky byli využity k analyze meziproduktů dehydrogenace krotonaldehydu na maleinanhydrid. Při laboratorní terplotě byl crotylalkohol nadsorbován převážně ve formě alkoxidu na všech studovaných oxidech. Krotonaldehyd a následně karboxyláty byly identifikovány jako produkty reakce alkoholu s aktivními centry ZrO2 při vyšších teplotách. Během adsorpce kyseliny krotonové byl zjištěn výskyt nedisociovaných molekul a molekul slabě vázaných-pomocí vodíkové vazby na povrchu všech oxidů. FTIR spektroskopie;oxid křemičitý;oxid zirkoničitý;oxid titaničitý;crotylalkohol;kyselina krotonová
eng FTIR study of the interaction of crotyl alcohol and crotonic acid with surface of SiO2, TiO2 and ZrO2 Infrared studies of crotyl alcohol (2-butene-1-ol) and crotonic acid (2-butenoic acid) adsorption were carried out on SiO2, TiO2 and ZrO2 supports. The results were used to analyze the surface intermediates of crotonaldehyde dehydrogenation to maleic anhydride. Crotyl alcohol was adsorbed mainly in the alkoxide form at room temperature on all the studied oxides. Crotonaldehyde and consequently also carboxylate were products of reaction between the crotyl alcohol and active sites of ZrO2 surface at higher temperatures. During crotonic acid adsorption the undissociated acid molecules and the formation of hydrogen-bonded acid with surface hydroxyls were indicated for all the studied oxides. Crotonic acid was easily dissociated to form the surface carboxylate species on ZrO2. The presence of two different symmetric carboxylate species (maleate and crotonate) was shown from IR spectra following the crotonic acid adsorption. FTIR spectroscopy;silica;titania;zirconia;Crotyl alcohol;Crotonic acid

Departments

Other Parts

Map

en.mapy.cz

Services

Popular Links

© 2023 University of Pardubice, Studentská 95, 532 10 Pardubice 2
Phone: +420 466 036 111, 466 036 112, 466 036 113
Webmaster, RSS
Data box ID: f5vj9hu
Accessibility Statement
CC BY-NC-ND 4.0Creative CommonsAttributionNonCommercialNoDerivatives