The silver acid salts AgxH3-xPW12O40 (Ag(x)WPA), where Ag content is x = 1 up to x = 2.5, were synthesized and characterized by Fourier transform infrared and micro-Raman spectroscopy, powder X-ray diffraction and differential thermal and thermogravimetric analysis and nitrogen adsorption. The properties of the prepared salts are compared with those of the parent acid. Regarding the structural, textural and thermal and solubility characteristics, these salts are between salts of group A, with small metal ions, and B group salts with large metal ions. The acid salts are two phase mixtures of soluble acid and insoluble neutral salt, like other alkaline acid salts of H3PW12O40 for x lt 2. The catalytic properties of the acid salts have been studied for the vapor-phase dehydration of ethanol, carried out in a conventional flow-type reactor at 300 degrees C. The acid salts exhibited stable catalytic activity, a little bit lower than tungstophosphoric acid for ethylene production from etha...nol.
TY - JOUR
AU - Holclajtner-Antunović, Ivanka
AU - Popa, Alexandru
AU - Bajuk-Bogdanović, Danica
AU - Mentus, Slavko
AU - Nedić-Vasiljević, Bojana
AU - Uskoković-Marković, Snežana
PY - 2013
UR - https://farfar.pharmacy.bg.ac.rs/handle/123456789/1872
AB - The silver acid salts AgxH3-xPW12O40 (Ag(x)WPA), where Ag content is x = 1 up to x = 2.5, were synthesized and characterized by Fourier transform infrared and micro-Raman spectroscopy, powder X-ray diffraction and differential thermal and thermogravimetric analysis and nitrogen adsorption. The properties of the prepared salts are compared with those of the parent acid. Regarding the structural, textural and thermal and solubility characteristics, these salts are between salts of group A, with small metal ions, and B group salts with large metal ions. The acid salts are two phase mixtures of soluble acid and insoluble neutral salt, like other alkaline acid salts of H3PW12O40 for x lt 2. The catalytic properties of the acid salts have been studied for the vapor-phase dehydration of ethanol, carried out in a conventional flow-type reactor at 300 degrees C. The acid salts exhibited stable catalytic activity, a little bit lower than tungstophosphoric acid for ethylene production from ethanol.
PB - Elsevier Science Sa, Lausanne
T2 - Inorganica Chimica Acta
T1 - Synthesis and characterization of acid silver salts of 12-tungstophosphoric acid
VL - 407
SP - 197
EP - 203
DO - 10.1016/j.ica.2013.07.035
ER -
@article{
author = "Holclajtner-Antunović, Ivanka and Popa, Alexandru and Bajuk-Bogdanović, Danica and Mentus, Slavko and Nedić-Vasiljević, Bojana and Uskoković-Marković, Snežana",
year = "2013",
abstract = "The silver acid salts AgxH3-xPW12O40 (Ag(x)WPA), where Ag content is x = 1 up to x = 2.5, were synthesized and characterized by Fourier transform infrared and micro-Raman spectroscopy, powder X-ray diffraction and differential thermal and thermogravimetric analysis and nitrogen adsorption. The properties of the prepared salts are compared with those of the parent acid. Regarding the structural, textural and thermal and solubility characteristics, these salts are between salts of group A, with small metal ions, and B group salts with large metal ions. The acid salts are two phase mixtures of soluble acid and insoluble neutral salt, like other alkaline acid salts of H3PW12O40 for x lt 2. The catalytic properties of the acid salts have been studied for the vapor-phase dehydration of ethanol, carried out in a conventional flow-type reactor at 300 degrees C. The acid salts exhibited stable catalytic activity, a little bit lower than tungstophosphoric acid for ethylene production from ethanol.",
publisher = "Elsevier Science Sa, Lausanne",
journal = "Inorganica Chimica Acta",
title = "Synthesis and characterization of acid silver salts of 12-tungstophosphoric acid",
volume = "407",
pages = "197-203",
doi = "10.1016/j.ica.2013.07.035"
}
Holclajtner-Antunović, I., Popa, A., Bajuk-Bogdanović, D., Mentus, S., Nedić-Vasiljević, B.,& Uskoković-Marković, S.. (2013). Synthesis and characterization of acid silver salts of 12-tungstophosphoric acid. in Inorganica Chimica Acta
Elsevier Science Sa, Lausanne., 407, 197-203.
https://doi.org/10.1016/j.ica.2013.07.035
Holclajtner-Antunović I, Popa A, Bajuk-Bogdanović D, Mentus S, Nedić-Vasiljević B, Uskoković-Marković S. Synthesis and characterization of acid silver salts of 12-tungstophosphoric acid. in Inorganica Chimica Acta. 2013;407:197-203.
doi:10.1016/j.ica.2013.07.035 .
Holclajtner-Antunović, Ivanka, Popa, Alexandru, Bajuk-Bogdanović, Danica, Mentus, Slavko, Nedić-Vasiljević, Bojana, Uskoković-Marković, Snežana, "Synthesis and characterization of acid silver salts of 12-tungstophosphoric acid" in Inorganica Chimica Acta, 407 (2013):197-203,
https://doi.org/10.1016/j.ica.2013.07.035 . .
