Počet záznamů: 1
Thermal decomposition of a peroxopolytitanic acid cryogel: TA/MS study
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SYSNO ASEP 0471994 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Thermal decomposition of a peroxopolytitanic acid cryogel: TA/MS study Tvůrce(i) Palkovská, Monika (UACH-T) SAI
Slovák, V. (CZ)
Šubrt, Jan (UACH-T) SAI, RID
Boháček, Jaroslav (UACH-T) SAI
Havlín, J. (CZ)Celkový počet autorů 5 Zdroj.dok. Thermochimica Acta. - : Elsevier - ISSN 0040-6031
Roč. 647, JAN (2017), s. 1-7Poč.str. 7 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova TiO2 thin-films ; peroxo-polytitanic acid ; sol-gel process ; photocatalytic activity ; titanium dioxides Vědní obor RIV CA - Anorganická chemie Obor OECD Inorganic and nuclear chemistry CEP GA14-20744S GA ČR - Grantová agentura ČR Institucionální podpora UACH-T - RVO:61388980 UT WOS 000392787500001 EID SCOPUS 84995780094 DOI 10.1016/j.tca.2016.11.009 Anotace Thermal decomposition of a peroxopolytitanic acid cryogel was followed by simultaneous thermal analysis (TG/DTA) coupled with mass spectrometer (MS) and infrared spectroscope (FTIR). During the decomposition, the evolution of H2O (either residual moisture or as product of dehydration reactions), NH3 (precipitating agent used in preparation), O-2 (decomposition of peroxogroups), SO2 (decomposition of residual sulfates), N-2 (freezing agent in preparation), N2O, NO, NO2 (products of NH3 oxidation) and CO2 (adsorbed from atmosphere) was sought for. It was determined, that the decomposition is a four step process. During the first step, water and carbon dioxide evolve. At around 300 degrees C both N2O and CO2 (m/z = 44) were detected, as confirmed by FTIR spectroscopy. At 430-450 degrees C (depending of heating rate) amorphous phase crystallizes into anatase. Pracoviště Ústav anorganické chemie Kontakt Jana Kroneislová, krone@iic.cas.cz, Tel.: 311 236 931 Rok sběru 2017
Počet záznamů: 1