Thermal degradation of cetyltrimethylammonium bromide (CTMAB) inside the mesoporous SBA-3 has been studied under non-isothermal conditions. There are two distinct although partly overlapping kinetic processes, and both of them can be described by the Sestak-Berggren model. The main decomposition step proceeds with E(a) = 116 +/- 2 kJ/mol which is significantly lower than for the mesoporous MCM-41 and MCM-48 suggesting that the interaction between CTMAB and the silica network plays a crucial role in the removal of the surfactant from the as-synthesized material. The second decomposition step has a higher E(a) value (E(a) = 153 +/- 5 kJ/mol) than the first step, indicating that it is primarily controlled by the size of the pore openings.
TY - CONF
AU - Rajić, Nevenka
AU - Stojaković, Đorđe
AU - Mrak, Maja
AU - Kaučič, Venčeslav
PY - 2008
UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/1352
AB - Thermal degradation of cetyltrimethylammonium bromide (CTMAB) inside the mesoporous SBA-3 has been studied under non-isothermal conditions. There are two distinct although partly overlapping kinetic processes, and both of them can be described by the Sestak-Berggren model. The main decomposition step proceeds with E(a) = 116 +/- 2 kJ/mol which is significantly lower than for the mesoporous MCM-41 and MCM-48 suggesting that the interaction between CTMAB and the silica network plays a crucial role in the removal of the surfactant from the as-synthesized material. The second decomposition step has a higher E(a) value (E(a) = 153 +/- 5 kJ/mol) than the first step, indicating that it is primarily controlled by the size of the pore openings.
PB - Elsevier Science Bv, Amsterdam
C3 - Zeolites and Related Materials: Trends, Targets and Challenges, Proceedings of the 4th International
T1 - A kinetic study of the thermal degradation of cetyltrimethylammonium bromide inside the mesoporous SBA-3 molecular sieve
EP - 980
SP - 977
VL - 174
UR - conv_3485
ER -
@conference{
author = "Rajić, Nevenka and Stojaković, Đorđe and Mrak, Maja and Kaučič, Venčeslav",
year = "2008",
abstract = "Thermal degradation of cetyltrimethylammonium bromide (CTMAB) inside the mesoporous SBA-3 has been studied under non-isothermal conditions. There are two distinct although partly overlapping kinetic processes, and both of them can be described by the Sestak-Berggren model. The main decomposition step proceeds with E(a) = 116 +/- 2 kJ/mol which is significantly lower than for the mesoporous MCM-41 and MCM-48 suggesting that the interaction between CTMAB and the silica network plays a crucial role in the removal of the surfactant from the as-synthesized material. The second decomposition step has a higher E(a) value (E(a) = 153 +/- 5 kJ/mol) than the first step, indicating that it is primarily controlled by the size of the pore openings.",
publisher = "Elsevier Science Bv, Amsterdam",
journal = "Zeolites and Related Materials: Trends, Targets and Challenges, Proceedings of the 4th International",
title = "A kinetic study of the thermal degradation of cetyltrimethylammonium bromide inside the mesoporous SBA-3 molecular sieve",
pages = "980-977",
volume = "174",
url = "conv_3485"
}
Rajić, N., Stojaković, Đ., Mrak, M.,& Kaučič, V.. (2008). A kinetic study of the thermal degradation of cetyltrimethylammonium bromide inside the mesoporous SBA-3 molecular sieve. in Zeolites and Related Materials: Trends, Targets and Challenges, Proceedings of the 4th International
Elsevier Science Bv, Amsterdam., 174, 977-980.
conv_3485
Rajić N, Stojaković Đ, Mrak M, Kaučič V. A kinetic study of the thermal degradation of cetyltrimethylammonium bromide inside the mesoporous SBA-3 molecular sieve. in Zeolites and Related Materials: Trends, Targets and Challenges, Proceedings of the 4th International. 2008;174:977-980.
conv_3485 .
Rajić, Nevenka, Stojaković, Đorđe, Mrak, Maja, Kaučič, Venčeslav, "A kinetic study of the thermal degradation of cetyltrimethylammonium bromide inside the mesoporous SBA-3 molecular sieve" in Zeolites and Related Materials: Trends, Targets and Challenges, Proceedings of the 4th International, 174 (2008):977-980,
conv_3485 .
