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Statements

Subject Item
n2:RIV%2F00216275%3A25310%2F13%3A39896257%21RIV14-GA0-25310___
rdf:type
skos:Concept n10:Vysledek
rdfs:seeAlso
http://link.springer.com/article/10.1007%2Fs10973-013-2939-0
dcterms:description
The concept of generalized time in non-isothermal kinetics was introduced by Ozawa in 1965, together with the well-known isoconversional plot, i.e., Ozawa plot. The generalized time is the key concept to tie the kinetic data under varying temperature to the kinetic relationship at a constant temperature. It is well known that many processes studied by thermal analysis and calorimetry reveal a complex nature. Therefore, the generalized time concept seems to be very useful for the description of the change in the rate behavior depending on the fractional conversion. Using the concept of theta, three kinds of experimental master plots can be formalized in differential, integral, and multiplied forms. Among others, combination of the differential and multiplied master plots, y(alpha) = (d alpha/d theta) and z(alpha) = (d alpha/d theta)theta, show a high performance to discriminate the kinetic model based on the maxima condition of y(alpha (y)*) and z(alpha (z)*). The alpha (y)* - alpha (y)* kinetic plot is a useful tool to visualize the complexity of the kinetic process and to determine the most suitable kinetic model. The usefulness of alpha (y)* - alpha (y)* kinetic plot and the YZ-master plots is illustrated as exemplified by the kinetic analyses of complex crystallization processes of the as-prepared, thermally and mechanically treated amorphous zirconia. The concept of generalized time in non-isothermal kinetics was introduced by Ozawa in 1965, together with the well-known isoconversional plot, i.e., Ozawa plot. The generalized time is the key concept to tie the kinetic data under varying temperature to the kinetic relationship at a constant temperature. It is well known that many processes studied by thermal analysis and calorimetry reveal a complex nature. Therefore, the generalized time concept seems to be very useful for the description of the change in the rate behavior depending on the fractional conversion. Using the concept of theta, three kinds of experimental master plots can be formalized in differential, integral, and multiplied forms. Among others, combination of the differential and multiplied master plots, y(alpha) = (d alpha/d theta) and z(alpha) = (d alpha/d theta)theta, show a high performance to discriminate the kinetic model based on the maxima condition of y(alpha (y)*) and z(alpha (z)*). The alpha (y)* - alpha (y)* kinetic plot is a useful tool to visualize the complexity of the kinetic process and to determine the most suitable kinetic model. The usefulness of alpha (y)* - alpha (y)* kinetic plot and the YZ-master plots is illustrated as exemplified by the kinetic analyses of complex crystallization processes of the as-prepared, thermally and mechanically treated amorphous zirconia.
dcterms:title
The Ozawa's generalized time concept and YZ-master plots as a convenient tool for kinetic analysis of complex processes The Ozawa's generalized time concept and YZ-master plots as a convenient tool for kinetic analysis of complex processes
skos:prefLabel
The Ozawa's generalized time concept and YZ-master plots as a convenient tool for kinetic analysis of complex processes The Ozawa's generalized time concept and YZ-master plots as a convenient tool for kinetic analysis of complex processes
skos:notation
RIV/00216275:25310/13:39896257!RIV14-GA0-25310___
n10:predkladatel
n11:orjk%3A25310
n4:aktivita
n13:P
n4:aktivity
P(GAP106/11/1152), P(LG11027)
n4:cisloPeriodika
3
n4:dodaniDat
n17:2014
n4:domaciTvurceVysledku
n12:3988163
n4:druhVysledku
n5:J
n4:duvernostUdaju
n14:S
n4:entitaPredkladatele
n7:predkladatel
n4:idSjednocenehoVysledku
95107
n4:idVysledku
RIV/00216275:25310/13:39896257
n4:jazykVysledku
n18:eng
n4:klicovaSlova
crystallization; zirconia; kinetics; master plot
n4:klicoveSlovo
n9:master%20plot n9:zirconia n9:kinetics n9:crystallization
n4:kodStatuVydavatele
NL - Nizozemsko
n4:kontrolniKodProRIV
[E6A475403255]
n4:nazevZdroje
Journal of Thermal Analysis and Calorimetry
n4:obor
n20:CF
n4:pocetDomacichTvurcuVysledku
1
n4:pocetTvurcuVysledku
4
n4:projekt
n16:LG11027 n16:GAP106%2F11%2F1152
n4:rokUplatneniVysledku
n17:2013
n4:svazekPeriodika
113
n4:tvurceVysledku
Perez-Maqueda, Luis A. Criado, Jose M. Koga, Nobuyoshi Málek, Jiří
n4:wos
000323503300057
s:issn
1388-6150
s:numberOfPages
10
n19:doi
10.1007/s10973-013-2939-0
n21:organizacniJednotka
25310