prikaz prve stranice dokumenta Formation of Chromia from Amorphous Chromium Hydroxide
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Formation of Chromia from Amorphous Chromium Hydroxide
Croatica Chemica Acta, 72 (1999), 4; 789-802. urn:nbn:hr:217:029045
Musić, Svetozar; Maljković, Miroslava; Popović, Stanko; Trojko, Rudolf

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Musić, S., Maljković, M., Popović, S. i Trojko, R. (1999). Formation of Chromia from Amorphous Chromium Hydroxide. Croatica Chemica Acta, 72. (4), 789-802. Preuzeto s https://urn.nsk.hr/urn:nbn:hr:217:029045

Musić, Svetozar, et al. "Formation of Chromia from Amorphous Chromium Hydroxide." Croatica Chemica Acta, vol. 72, br. 4, 1999, str. 789-802. https://urn.nsk.hr/urn:nbn:hr:217:029045

Musić, Svetozar, Miroslava Maljković, Stanko Popović i Rudolf Trojko. "Formation of Chromia from Amorphous Chromium Hydroxide." Croatica Chemica Acta 72, br. 4 (1999): 789-802. https://urn.nsk.hr/urn:nbn:hr:217:029045

Musić, S., et al. (1999) 'Formation of Chromia from Amorphous Chromium Hydroxide', Croatica Chemica Acta, 72(4), str. 789-802. Preuzeto s: https://urn.nsk.hr/urn:nbn:hr:217:029045 (Datum pristupa: 20.04.2024.)

Musić S, Maljković M, Popović S, Trojko R. Formation of Chromia from Amorphous Chromium Hydroxide. Croatica Chemica Acta [Internet]. 1999. [pristupljeno 20.04.2024.];72(4):789-802. Dostupno na: https://urn.nsk.hr/urn:nbn:hr:217:029045

S. Musić, M. Maljković, S. Popović i R. Trojko, "Formation of Chromia from Amorphous Chromium Hydroxide", Croatica Chemica Acta, vol. 72, br. 4, str. 789-802, 1999. [Online]. Dostupno na: https://urn.nsk.hr/urn:nbn:hr:217:029045. [Citirano: 20.04.2024.]

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Podaci o radu
Naslov (engleski)Formation of Chromia from Amorphous Chromium Hydroxide
AutorSvetozar Musić
AutorMiroslava Maljković
AutorStanko Popović
AutorRudolf Trojko
Autorova ustanovaSveučilište u Zagrebu
Prirodoslovno-matematički fakultet
(Fizički odsjek)
Znanstveno / umjetničko
područje, polje i grana		PRIRODNE ZNANOSTI
Fizika
Sažetak (engleski)
Forced hydrolysis of Cr(NO3)3 in a solution of decomposing ureawas investigated. Chromium hydroxide precipitates were amorphousfor the final pH values up to 9 to 9.5. Heating of amorphouschromium hydroxide up to 360 °C produced Cr2O3 crystallites ofthe order of 20 nm, whereas after heating up to 825 °C the crystallitesize of Cr2O3 increased to the order of 100 nm. Crystallizationof Cr2O3 was also monitored by FT-IR spectroscopy. TGA/DTA curves,recorded in air, showed thermal behavior of amorphous chromiumhydroxides that differed depending on the experimental conditionsof their preparation. A sharp exothermic peak between 410and 420 °C was recorded due to the crystallization of Cr2O3. Thispeak shifted to 600 °C when the heating of amorphous chromiumhydroxide was performed in an argon atmosphere. Accelerated crystallizationof Cr2O3 from amorphous chromium hydroxide in air isexplained by the catalytic effect of the higher oxidation states ofchromium species, which were probably restricted to the surface ofthe particles. It is suggested that higher oxidation states of chromiumwere not stable and they converted to the initial Cr(III)state. XRD did not detect any oxide phase of chromium except forCr2O3.
Ključne riječi (engleski)
Jezikengleski
Vrsta publikacijeZnanstveni rad - Izvorni znanstveni rad
Status objaveObjavljen
Vrsta recenzijeRecenziran - međunarodna recenzija
Verzija publikacijeObjavljena verzija rada (izdavačev PDF)
Naslov časopisaCroatica Chemica Acta
Brojčani podacivol. 72, br. 4, str. 789-802
p-ISSN0011-1643
e-ISSN1334-417X
URN:NBNurn:nbn:hr:217:029045
Datum objave publikacije1999
URL dokumentahttps://hrcak.srce.hr/132299
Vrsta resursaTekst
Prava pristupaOtvoreni pristup
Uvjeti korištenjaIkona licence Zaštićeno autorskim pravom.
Datum i vrijeme pohrane2019-10-08 09:51:38