The Special Features of the Electronic State of Copper and the Structure of Copper-Containing Fragments in CuO-ZrO2 Catalysts Synthesized in Molten Ammonium Nitrate Full article
Journal |
Russian Journal of Physical Chemistry A
ISSN: 0036-0244 , E-ISSN: 1531-863X |
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Output data | Year: 2005, Volume: 79, Number: 8, Pages: 1249-1255 Pages count : 7 | ||||
Tags | Ammonium compounds; Calcination; Catalysis; Copper oxides; Diffusion; Electron spectroscopy; Paramagnetic resonance; Synthesis (chemical); Zirconium compounds | ||||
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Abstract:
The formation of copper oxide cluster structures starting with copper concentrations of 0.5 at % in CuO-ZrO2 catalysts synthesized using ammonium nitrate melts was proved by electronic paramagnetic resonance and diffuse reflectance electron spectroscopy (DRES) measurements. Formations of disperse CuO phase particles appear in samples with copper concentrations above 20 at %. The formation of the volume CuO phase in the CuO-ZrO2 system was observed in samples containing more than 40 at % copper. The DRE spectra were independent of the temperature of calcining, which led us to conclude that copper ions were stabilized in the form of an anomalous solid solution. DRES measurements showed the occurrence of intervalent Cu2+...Cu+ transitions related to the ease of copper ion reduction in oxide cluster structures.
Cite:
Vasenin N.T.
, Fedorova A.A.
, Anufrienko V.F.
, Larina T.V.
, Morozov I.V.
, Paukshtis E.A.
, Ismagilov Z.R.
The Special Features of the Electronic State of Copper and the Structure of Copper-Containing Fragments in CuO-ZrO2 Catalysts Synthesized in Molten Ammonium Nitrate
Russian Journal of Physical Chemistry A. 2005. V.79. N8. P.1249-1255. WOS Scopus РИНЦ
The Special Features of the Electronic State of Copper and the Structure of Copper-Containing Fragments in CuO-ZrO2 Catalysts Synthesized in Molten Ammonium Nitrate
Russian Journal of Physical Chemistry A. 2005. V.79. N8. P.1249-1255. WOS Scopus РИНЦ
Original:
Васенин Н.Т.
, Федорова А.А.
, Ануфриенко В.Ф.
, Ларина Т.В.
, Морозов И.В.
, Паукштис Е.А.
, Исмагилов З.Р.
Особенности электронного состояния меди и структура медьсодержащих фрагментов в катализаторах CuO-ZrO2, синтезированных в расплаве нитрата аммония
Журнал физической химии. 2005. Т.79. №8. С.1417-1423. RSCI РИНЦ
Особенности электронного состояния меди и структура медьсодержащих фрагментов в катализаторах CuO-ZrO2, синтезированных в расплаве нитрата аммония
Журнал физической химии. 2005. Т.79. №8. С.1417-1423. RSCI РИНЦ
Dates:
Submitted: | Nov 11, 2004 |
Published print: | Aug 1, 2005 |
Identifiers:
Web of science | WOS:000230855900012 |
Scopus | 2-s2.0-24644509885 |
Elibrary | 13490823 |
Chemical Abstracts | 2005:702378 |
Chemical Abstracts (print) | 144:75511 |