LaCo1−xCuxO3−δ perovskite catalysts for higher alcohol synthesis

Thảo, Nguyễn Tiến; Alamdari, Houshang; Zahedi-Niaki, M. Hassan; Kaliaguine, Serge

doi:10.1016/j.apcata.2006.06.029

Cited by 137 publications

(71 citation statements)

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“…As copper content increases, this peak becomes a shoulder of the higher intensity peak appearing at lower temperature (300ºC) for BaTiCu1, BaTiCu2 and BaTiCu3 catalysts. The peak located at the lower temperature, whose intensity increases with the copper content, could correspond to the reduction of copper with a strong electronic interaction with the perovskite, and for hence more easily reducible [32,[61][62][63], or to copper incorporated into the lattice. It has to be underlined that, though the copper incorporation generates a distortion of the structure creating oxygen vacancies, the coordination of copper in the perovskite structure keeps being higher than that of the CuO [64] and allows its reduction at lower temperature than the CuO used as reference (Figure 4).…”

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confidence: 99%

BaTi1−xCuxO3 perovskites: The effect of copper content in the properties and in the NOx storage capacity

Albaladejo-Fuentes

López-Suárez

Sánchez-Adsuar

et al. 2014

Applied Catalysis A: General

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Please cite this article as: V. Albaladejo-Fuentes, F.E. López-Suárez, M.S. Sánchez-Adsuar, M.J. Illán-Gómez, −x Cu x O 3 perovskites: the effect of copper content in the properties and in the NOx storage capacity., Applied Catalysis A, General (2014), http://dx.doi.org/10.1016/j.apcata. 2014.09.032 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. XRD and Raman spectroscopy results indicate that all the copper containing catalysts present a distortion of the original tetragonal structure due to the incorporation of copper into the lattice.The XPS and H 2 -TPR results reveal that the copper catalysts, except for BaTiCu0.5 catalyst, present two copper species (with different electronic interaction with the perovskite) and active surface oxygen species. Additionally, it seems that the fraction of copper with a strong electronic interaction with the perovskite or incorporated into the perovskite structure increases with the copper content.The active sites created on the BaTi 1-x Cu x O 3 perovskite surface bring to the catalysts activity for the NO to NO 2 oxidation and for the NOx adsorption. The NOx storage capacity increases with the copper content and reaches a limit for the BaTiCu2 catalyst (300 µmol/g, at 420ºC) which is within the range of the values reported for the noble metal-based catalysts.

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confidence: 99%

BaTi1−xCuxO3 perovskites: The effect of copper content in the properties and in the NOx storage capacity

Albaladejo-Fuentes

López-Suárez

Sánchez-Adsuar

et al. 2014

Applied Catalysis A: General

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“…The β desorption is attributed to the crystal structure destruction. Our TPD result records the α desorption peak -the lattice oxygen desorption at 450-650°C and the β desorption peak -the crystal structure destruction at 800-900°C [13].…”

Section: Oxygen Desorption Behaviormentioning

confidence: 98%

Mechanism of electric conductivity change in BaCo0.7Fe0.2Nb0.1O3−δ at intermediate temperature

Zhen

Tan

2015

Solid State Ionics

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“…Wang et al [20] studied the partial substitution of Co in LaMnO 3 for NO oxidation and found that LaCo 0.9 Mn 0.1 O 3 achieved the best activity, where the maximum conversion of NO reached 76.5 %. Tien-Thao et al [21] stated that Cu-doped LaCoO 3 would promote the production of alcohols because of the interaction between Co and Cu in perovskites. Furthermore, the location of Cu in the octahedral site of the perovskite framework played a key role in the preparation of higher alcohols.…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Characterization, and Catalytic Activity of Mn‐doped Perovskite Oxides for Three‐Way Catalysis

Zhou

Zhang

et al. 2015

Chem Eng & Technol

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Mn-doped La 0.8 Sr 0.2 CoO 3 perovskite oxides (La 0.8 Sr 0.2 Co 1-x Mn x O 3 ; x = 0, 0.1, 0.3, 0.5) were synthesized by a modified sol-gel method. The phase-pure oxides were obtained. CoO and carbonates were formed on the surface of La 0.8 Sr 0.2 CoO 3 . With increasing doping content, these impurities were reduced while the stability of the perovskite structure was improved. The valence state of B-site ions and the amount of absorbed oxygen were influenced by Mn doping. The catalytic activity of the perovskite catalysts was investigated for CO oxidation and simultaneous removal of CO, C 3 H 8 , and NO. For CO and NO removal, La 0.8 Sr 0.2 Co 0.9 Mn 0.1 O 3 exhibited the best performance. For C 3 H 8 removal, the reactivity was promoted linearly with the doping content. The structure-activity relationship is also discussed.

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LaCo1−xCuxO3−δ perovskite catalysts for higher alcohol synthesis

Cited by 137 publications

References 50 publications

BaTi1−xCuxO3 perovskites: The effect of copper content in the properties and in the NOx storage capacity

BaTi1−xCuxO3 perovskites: The effect of copper content in the properties and in the NOx storage capacity

Mechanism of electric conductivity change in BaCo0.7Fe0.2Nb0.1O3−δ at intermediate temperature

Synthesis, Characterization, and Catalytic Activity of Mn‐doped Perovskite Oxides for Three‐Way Catalysis

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