Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Regenerating Spent Solutions of Vanadium-containing Heteropoly Acids in the Presence of Additives. / Zhizhina, Elena G.; Rodikova, Yulia A.; Podyacheva, Olga Yu и др.
в: Zeitschrift fur Anorganische und Allgemeine Chemie, Том 644, № 16, 31.08.2018, стр. 869-876.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Regenerating Spent Solutions of Vanadium-containing Heteropoly Acids in the Presence of Additives
AU - Zhizhina, Elena G.
AU - Rodikova, Yulia A.
AU - Podyacheva, Olga Yu
AU - Pai, Zinaida P.
N1 - Publisher Copyright: © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2018/8/31
Y1 - 2018/8/31
N2 - Vanadium-containing heteropoly acid solutions of Keggin H3+xPMo12–xVxO40 and modified HaPzMoyVxOb types (P-Mo-V HPAs) are promising nanosized inorganic metal-oxygen cluster compounds with the property of reversible oxidability (VV ↔ VIV). The oxidation of reduced P-Mo-V HPAs at a temperature of 130–170 °C and an oxygen pressure of 4 atm is a convenient method for their regeneration, but results in regeneration degree of only 75–88 %. Various materials with electron transfer or oxidative properties, such as nitrogen doped carbon nanofibers (N-CNFs), Sibunit-4, HNO3, and MoO2, were investigated as additives to facilitate and accelerate the regeneration of HPA solutions. Among the studied additives HNO3 was found to show the best efficiency, resulting in regeneration degree of higher 95 %. Rapid and efficient regeneration of spent HPA catalysts is an important criterion for achieving high productivity and sustainability of oxidative processes on their basis.
AB - Vanadium-containing heteropoly acid solutions of Keggin H3+xPMo12–xVxO40 and modified HaPzMoyVxOb types (P-Mo-V HPAs) are promising nanosized inorganic metal-oxygen cluster compounds with the property of reversible oxidability (VV ↔ VIV). The oxidation of reduced P-Mo-V HPAs at a temperature of 130–170 °C and an oxygen pressure of 4 atm is a convenient method for their regeneration, but results in regeneration degree of only 75–88 %. Various materials with electron transfer or oxidative properties, such as nitrogen doped carbon nanofibers (N-CNFs), Sibunit-4, HNO3, and MoO2, were investigated as additives to facilitate and accelerate the regeneration of HPA solutions. Among the studied additives HNO3 was found to show the best efficiency, resulting in regeneration degree of higher 95 %. Rapid and efficient regeneration of spent HPA catalysts is an important criterion for achieving high productivity and sustainability of oxidative processes on their basis.
KW - Additives
KW - Electron transfer
KW - Polyoxometalates
KW - Redox chemistry
KW - Regeneration
KW - FORMIC-ACID
KW - AQUEOUS-SOLUTIONS
KW - DOPED CARBON NANOFIBERS
KW - FUEL-CELL
KW - HIGHLY SELECTIVE OXIDATION
KW - HYDROLYTIC OXIDATION
KW - EFFICIENT HETEROGENEOUS EPOXIDATION
KW - CATALYTIC-OXIDATION
KW - HYDROGEN-PEROXIDE
KW - SILICOTUNGSTATE LIGANDS
UR - http://www.scopus.com/inward/record.url?scp=85050494196&partnerID=8YFLogxK
U2 - 10.1002/zaac.201800215
DO - 10.1002/zaac.201800215
M3 - Article
AN - SCOPUS:85050494196
VL - 644
SP - 869
EP - 876
JO - Zeitschrift fur Anorganische und Allgemeine Chemie
JF - Zeitschrift fur Anorganische und Allgemeine Chemie
SN - 0044-2313
IS - 16
ER -
ID: 25399507