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Statements

Subject Item
n2:RIV%2F67985858%3A_____%2F01%3A27013059%21RIV%2F2003%2FAV0%2FA27003%2FN
rdf:type
skos:Concept n8:Vysledek
dcterms:description
Five hydrotalcite-type compounds containing different amounts of Cu2+ and Mg2+ cations were prepared by coprecipitation method (the molar ratio Cu2+:Mg2+:Al3+ in brucite-like layers varied as follows: 0:4:2, 1:3:2, 2:2:2, 3:1:2, and 4:0:2). The products were characterized by XRD, TG and DTA measurements. The increasing content of Cu2+ decreased both the dehydration and decomposition temperatures. Extrudates prepared from the solids were calcined at different temperatures and the properties of the resulting materials (surface area, pore volume, TPR, surface basicity and acidity) were examined. Maximum of the Mg/Al hydrotalcite surface area was observed at 400 C, basicity at 450 C and acidity at 550 C. Incorporation of Cu2+ into brucite-like layers caused a substantial decrease in both basicity and acidity. Acidity rose with increasing amounts of copper in the layers and basicity went through a local minimum. An increase in the amount of magnesium in the precursors manifested itself in a decreased reduc Five hydrotalcite-type compounds containing different amounts of Cu2+ and Mg2+ cations were prepared by coprecipitation method (the molar ratio Cu2+:Mg2+:Al3+ in brucite-like layers varied as follows: 0:4:2, 1:3:2, 2:2:2, 3:1:2, and 4:0:2). The products were characterized by XRD, TG and DTA measurements. The increasing content of Cu2+ decreased both the dehydration and decomposition temperatures. Extrudates prepared from the solids were calcined at different temperatures and the properties of the resulting materials (surface area, pore volume, TPR, surface basicity and acidity) were examined. Maximum of the Mg/Al hydrotalcite surface area was observed at 400 C, basicity at 450 C and acidity at 550 C. Incorporation of Cu2+ into brucite-like layers caused a substantial decrease in both basicity and acidity. Acidity rose with increasing amounts of copper in the layers and basicity went through a local minimum. An increase in the amount of magnesium in the precursors manifested itself in a decreased reduc
dcterms:title
Characterization of Activated Cu/Mg/Al Hydrotalcites and Their Catalytic Activity in Toluene Combustion. Characterization of Activated Cu/Mg/Al Hydrotalcites and Their Catalytic Activity in Toluene Combustion.
skos:prefLabel
Characterization of Activated Cu/Mg/Al Hydrotalcites and Their Catalytic Activity in Toluene Combustion. Characterization of Activated Cu/Mg/Al Hydrotalcites and Their Catalytic Activity in Toluene Combustion.
skos:notation
RIV/67985858:_____/01:27013059!RIV/2003/AV0/A27003/N
n3:strany
71;80
n3:aktivita
n6:Z
n3:aktivity
Z(AV0Z4072921)
n3:cisloPeriodika
N/A
n3:dodaniDat
n12:2003
n3:domaciTvurceVysledku
n16:8799938 n16:3028194
n3:druhVysledku
n15:J
n3:duvernostUdaju
n17:S
n3:entitaPredkladatele
n10:predkladatel
n3:idSjednocenehoVysledku
675371
n3:idVysledku
RIV/67985858:_____/01:27013059
n3:jazykVysledku
n11:eng
n3:klicovaSlova
hyrotalcites; layered double hydroxides; thermal decomposition
n3:klicoveSlovo
n4:layered%20double%20hydroxides n4:thermal%20decomposition n4:hyrotalcites
n3:kodStatuVydavatele
NL - Nizozemsko
n3:kontrolniKodProRIV
[264C48952B85]
n3:nazevZdroje
Applied Clay Science
n3:obor
n13:CI
n3:pocetDomacichTvurcuVysledku
2
n3:pocetTvurcuVysledku
4
n3:pocetUcastnikuAkce
0
n3:pocetZahranicnichUcastnikuAkce
0
n3:rokUplatneniVysledku
n12:2001
n3:svazekPeriodika
18
n3:tvurceVysledku
Jiratová, Květuše Kovanda, F. Koloušek, D. Rymeš, Jan
n3:zamer
n14:AV0Z4072921
s:issn
0169-1317
s:numberOfPages
10