On the “Active spacer and stabilizer” role of Zn in Cu1−xZnxFe2O4 in the selective mono-N-methylation of aniline: XPS and catalysis study

Vijayaraj, Munusamy; Gopinath, Chinnakonda S.

doi:10.1016/j.jcat.2006.04.010

Cited by 89 publications

(57 citation statements)

References 36 publications

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“…The first peak, similar to the results obtained for the sample calcined at 600°C, is attributed to the reduction of isolated and small copper oxide clusters, while the peak located at higher temperature (252°C) is related to the reduction of copper in CuAl 2 O 4 and bulky CuO clusters [8,49]. Both these copper containing phases were identified by XRD analysis.…”

Section: Resultssupporting

confidence: 80%

Thermal transformations of Cu–Mg (Zn)–Al(Fe) hydrotalcite-like materials into metal oxide systems and their catalytic activity in selective oxidation of ammonia to dinitrogen

Jabłońska

Chmielarz

Węgrzyn

et al. 2013

J Therm Anal Calorim

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and Fe 3? in the Me III positions were synthesized by coprecipitation method. Detailed studies of thermal transformation of obtained LDHs into metal oxide systems were performed using high temperature X-ray diffraction in oxidising and reducing atmosphere, thermogravimetry coupled with mass spectrometry and temperature-programmed reduction. The LDH samples calcined at 600 and 900°C were tested in the role of catalysts for selective oxidation of ammonia into nitrogen and water vapour. It was shown that all copper congaing samples presented high catalytic activity and additionally, for the Cu-Mg-Al and Cu-Mg-Fe hydrotalcite samples calcined at 600°C relatively high stability and selectivity to dinitrogen was obtained. An increase in calcination temperature to 900°C resulted in a decrease of their catalytic activity, possibly due to formation of well-crystallised metal oxide phases which are less catalytically active in the process of selective oxidation of ammonia.

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Section: Resultssupporting

confidence: 80%

Thermal transformations of Cu–Mg (Zn)–Al(Fe) hydrotalcite-like materials into metal oxide systems and their catalytic activity in selective oxidation of ammonia to dinitrogen

Jabłońska

Chmielarz

Węgrzyn

et al. 2013

J Therm Anal Calorim

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“…4k-n) photoelectrons. The bivalent lattice Fe 2p3/2 peak is located at around 710.1 eV and the trivalent lattice Fe 2p3/2 peak is located at around 711.6 eV (Vijayaraj and Gopinath, 2006;Yamashita and Hayes, 2008;Mathew et al, 2004), respectively. The observed Fe 2p3/2 peaks with binding energies (BE) at 714.0 eV and 719.0 eV are considered the satellite peaks of bivalent and trivalent Fe 2p, respectively, suggesting the existence of Fe 2+ / Fe 3+ redox pairs.…”

Section: Xps Analysismentioning

confidence: 96%

Fe3−Cu O4 as highly active heterogeneous Fenton-like catalysts toward elemental mercury removal

et al. 2015

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“…and Fe 3? species [26][27][28][29]. The presence of sodium on the CP-solids surface was detected by the binding energies at 1071.4-1071.8 eV.…”

Section: Textural and Surface Propertiesmentioning

confidence: 99%

Structural, Textural and Acid–Base Properties of Nano-Sized NiFe2O4 Spinel Catalysts

Benrabaa¹,

Boukhlouf²,

Barama³

et al. 2011

Catal Lett

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On the “Active spacer and stabilizer” role of Zn in Cu1−xZnxFe2O4 in the selective mono-N-methylation of aniline: XPS and catalysis study

Cited by 89 publications

References 36 publications

Thermal transformations of Cu–Mg (Zn)–Al(Fe) hydrotalcite-like materials into metal oxide systems and their catalytic activity in selective oxidation of ammonia to dinitrogen

Thermal transformations of Cu–Mg (Zn)–Al(Fe) hydrotalcite-like materials into metal oxide systems and their catalytic activity in selective oxidation of ammonia to dinitrogen

Fe3−Cu O4 as highly active heterogeneous Fenton-like catalysts toward elemental mercury removal

Structural, Textural and Acid–Base Properties of Nano-Sized NiFe2O4 Spinel Catalysts

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