A possible connection between phosphate tungsten bronzes properties and briggs-rauscher oscillatory reaction response

Maksimović, Tijana V.; Maksimović, Jelena P.; Tančić, Pavle I.; Potkonjak, Nebojša I.; Nedić, Zoran P.; Joksović, Ljubinka G.; Pagnacco, Maja C.

doi:10.2298/SOS2102223M

2021

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Authors

Maksimović, Tijana V.

Maksimović, Jelena P.
Tančić, Pavle I.

Potkonjak, Nebojša I.

Nedić, Zoran P.
Joksović, Ljubinka G.

Pagnacco, Maja C.

Article (Published version)

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Abstract

The calcium phosphate tungsten bronze (Ca-PWB) has been synthesized and characterized (TGA, DSC, XRPD, FTIR, SEM). The influence of solid insoluble materials Ca-PWB, as well as lithium doped (Li-PWB) and cation free phosphate tungsten (PWB) bronzes on the oscillatory Briggs-Rauscher (BR) reaction dynamics, is compared. The results show that doping with Li and Ca reduces sensitivity of the BR reaction towards bronzes addition. These findings suggest the usage of the BR reaction as an innovative method for testing of different properties of bronze material. The behavior of PWB in the BR reaction is significantly changed with divalent cation (Ca2+) doping. The reasons for the different bronzes behavior were found in their calculated unit cell volumes. Namely, the compressed Ca-PWB unit cell volume indicates the difficult availability of the active site for heterogeneous catalysis. Hence, the linear correlation (slope) of the BR oscillogram’s length (τosc) vs. mass of bronze in BR reaction...

Keywords:

Briggs-Rauscher reaction / Catalytic activity / Heterogeneous catalysis / Keggin structures / Phosphate tungsten bronzes

Source:
Science of Sintering, 2021, 53, 2, 223-235

Funding / projects:

DOI: 10.2298/SOS2102223M

ISSN: 0350-820X

WoS: 000691836600007

TY - JOUR
AU - Maksimović, Tijana V.
AU - Maksimović, Jelena P.
AU - Tančić, Pavle I.
AU - Potkonjak, Nebojša I.
AU - Nedić, Zoran P.
AU - Joksović, Ljubinka G.
AU - Pagnacco, Maja C.
PY - 2021
UR - https://vinar.vin.bg.ac.rs/handle/123456789/9878
AB - The calcium phosphate tungsten bronze (Ca-PWB) has been synthesized and characterized (TGA, DSC, XRPD, FTIR, SEM). The influence of solid insoluble materials Ca-PWB, as well as lithium doped (Li-PWB) and cation free phosphate tungsten (PWB) bronzes on the oscillatory Briggs-Rauscher (BR) reaction dynamics, is compared. The results show that doping with Li and Ca reduces sensitivity of the BR reaction towards bronzes addition. These findings suggest the usage of the BR reaction as an innovative method for testing of different properties of bronze material. The behavior of PWB in the BR reaction is significantly changed with divalent cation (Ca2+) doping. The reasons for the different bronzes behavior were found in their calculated unit cell volumes. Namely, the compressed Ca-PWB unit cell volume indicates the difficult availability of the active site for heterogeneous catalysis. Hence, the linear correlation (slope) of the BR oscillogram’s length (τosc) vs. mass of bronze in BR reaction might be considered as a new parameter for the evaluation of the bronzes catalytic activity.
T2 - Science of Sintering
T1 - A possible connection between phosphate tungsten bronzes properties and briggs-rauscher oscillatory reaction response
VL - 53
IS - 2
SP - 223
EP - 235
DO - 10.2298/SOS2102223M
ER -

@article{
author = "Maksimović, Tijana V. and Maksimović, Jelena P. and Tančić, Pavle I. and Potkonjak, Nebojša I. and Nedić, Zoran P. and Joksović, Ljubinka G. and Pagnacco, Maja C.",
year = "2021",
abstract = "The calcium phosphate tungsten bronze (Ca-PWB) has been synthesized and characterized (TGA, DSC, XRPD, FTIR, SEM). The influence of solid insoluble materials Ca-PWB, as well as lithium doped (Li-PWB) and cation free phosphate tungsten (PWB) bronzes on the oscillatory Briggs-Rauscher (BR) reaction dynamics, is compared. The results show that doping with Li and Ca reduces sensitivity of the BR reaction towards bronzes addition. These findings suggest the usage of the BR reaction as an innovative method for testing of different properties of bronze material. The behavior of PWB in the BR reaction is significantly changed with divalent cation (Ca2+) doping. The reasons for the different bronzes behavior were found in their calculated unit cell volumes. Namely, the compressed Ca-PWB unit cell volume indicates the difficult availability of the active site for heterogeneous catalysis. Hence, the linear correlation (slope) of the BR oscillogram’s length (τosc) vs. mass of bronze in BR reaction might be considered as a new parameter for the evaluation of the bronzes catalytic activity.",
journal = "Science of Sintering",
title = "A possible connection between phosphate tungsten bronzes properties and briggs-rauscher oscillatory reaction response",
volume = "53",
number = "2",
pages = "223-235",
doi = "10.2298/SOS2102223M"
}

Maksimović, T. V., Maksimović, J. P., Tančić, P. I., Potkonjak, N. I., Nedić, Z. P., Joksović, L. G.,& Pagnacco, M. C.. (2021). A possible connection between phosphate tungsten bronzes properties and briggs-rauscher oscillatory reaction response. in Science of Sintering, 53(2), 223-235.
https://doi.org/10.2298/SOS2102223M

Maksimović TV, Maksimović JP, Tančić PI, Potkonjak NI, Nedić ZP, Joksović LG, Pagnacco MC. A possible connection between phosphate tungsten bronzes properties and briggs-rauscher oscillatory reaction response. in Science of Sintering. 2021;53(2):223-235.
doi:10.2298/SOS2102223M .

Maksimović, Tijana V., Maksimović, Jelena P., Tančić, Pavle I., Potkonjak, Nebojša I., Nedić, Zoran P., Joksović, Ljubinka G., Pagnacco, Maja C., "A possible connection between phosphate tungsten bronzes properties and briggs-rauscher oscillatory reaction response" in Science of Sintering, 53, no. 2 (2021):223-235,
https://doi.org/10.2298/SOS2102223M . .