Effect of the support composition on the physicochemical properties of Ni/Ce1–x
                            La
                                x
                            O
                                y
                             catalysts and their activity in an autothermal methane reforming reaction

Матус, Е. В.; Nefedova, D. V.; Kuznetsov, V. Ya.; Ушаков, В. А.; Стонкус, О. А.; Исмагилов, И.З.; Керженцев, М. А.; Исмагилов, З. Р.

doi:10.1134/s0023158417050160

Cited by 12 publications

(7 citation statements)

References 47 publications

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“…It was shown that modification of supports is an effective way to control the catalyst performance in reforming of fuels [24][25][26][27][28][29][30]. This study is devoted to the elucidation of the role of support composition in autothermal reforming of ethanol over Ni/Ce 1-x Gd x O y , Ni/Ce 1-x La x O y and Ni/Ce 1-x Mg x O y catalysts.…”

Section: Introductionmentioning

confidence: 99%

Control of Ni/Ce1-xMxOy Catalyst Properties Via the Selection of Dopant M = Gd, La, Mg. Part 2. Catalytic Activity

Керженцев

Матус

Исмагилов

et al. 2018

Eurasian Chem. Tech. J.

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To elucidate the role of support composition in autothermal reforming of ethanol (ATR of C2H5OH), a series of Ni catalysts (Ni content 2–15 wt.%) supported on different ceria-based oxides (Ce1-xGdxOy, Ce1-xLaxOy and Ce1-xMgxOy; x = 0.1–0.9) were prepared. The synthetized materials were tested in ATR of ethanol at 200–700 °C. It was established that supports themselves show catalytic activity in ATR of C2H5OH and provide 10–15% yield of H2 at 700 °C. Upon the increase of Ni content from 2 to 15 wt.% the temperature of 100% ethanol conversion decreases from 700 tо 300 °С, hydrogen yield increases from 25 to 60%, the inhibition of С2-С3 by-products formation, as well as the promotion of decomposition of acetaldehyde occur. The enhancement of catalyst performance in ATR of C2H5OH has been observed in the next series of supports: Ce1-xMgxOy < Ce1-xGdxOy < Ce1-xLaxOy and with a decrease of x to an optimal value that correlates with the improvement of Ni active component reducibility. At 600 °C on 10Ni/Ce0.8La0.2O1.9 catalyst the H2 yield of 50% was achieved at C2H5OH conversion of 100%. Stable and high performance of developed catalysts in ATR of C2H5OH indicates the promise of their use in the production of hydrogen.

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Section: Introductionmentioning

confidence: 99%

Control of Ni/Ce1-xMxOy Catalyst Properties Via the Selection of Dopant M = Gd, La, Mg. Part 2. Catalytic Activity

Керженцев

Матус

Исмагилов

et al. 2018

Eurasian Chem. Tech. J.

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“…This study continues our works on optimization of catalyst performance through regulation of support characteristics [2,[29][30][31][32][33][34] and it is focused on the elucidation of the role of Ce…”

Section: Introductionmentioning

confidence: 59%

“…The molar portion of dopant (x) was varied from 0 to 1 and was equal to 0, 0.1, 0.2, 0.5, 0.8, 0.9 and 1.0. The detailed description of properties of the Ce 1-x M x O y samples with x = 0.1-0.5 can be found in our previous papers [33,35]. In this work, we increased content of doping cation up to x = 0.8-1.0 and analyzed information for all Ce 1-x M x O y samples with x = 0-1.…”

Section: Characterization Of Supportsmentioning

confidence: 99%

“…were prepared by polymerizable complex method [33,35]. The x (molar portion of M) was varied from 0.1 to 0.9.…”

Section: Preparation Of Supports and Catalystsmentioning

confidence: 99%

“…The prepared materials (Ce 1-x M x O y supports, Ni/Ce 1-x M x O y catalysts) were characterized by X-ray spectral fluorescence analysis (XRFA), low temperature nitrogen adsorption/desorption, X-ray diffraction (XRD), high resolution transmission electron microscopy (HRTEM) and thermal analysis (TA) in 5%H 2 /He in accordance with the procedures described previously [29,33,36].…”

Section: Characterization Of Supports and Catalystsmentioning

confidence: 99%

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Control of Ni/Ce1-xMxOy Catalyst Properties Via the Selection of Dopant M = Gd, La, Mg. Part 1. Physicochemical Characteristics

Керженцев¹,

Матус

Исмагилов

et al. 2018

Eurasian Chem. Tech. J.

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To develop effective reforming catalyst a series of Ni catalysts (Ni content 2‒15 wt.%) supported on ceria-based oxides Ce1-xMxOy were synthesized by incipient wetness impregnation. To regulate dispersion and reducibility of the active component, the variation of chemical composition of support was performed. The prepared samples of supports and catalysts were characterized by X-ray spectral fluorescence analysis, N2 adsorption/desorption, X-ray diffraction, transmission electron microscopy, and thermal analysis. It was found that the support composition specified the forms of stabilization (NiO or Ni-M-O oxides, M = La, Mg) and capability to reduction of Ni-component through the realization of a different extent of interaction between Ni-containing species and support. The increase of M content in CexM1-xOy support induces the decrease of CexM1-xOy crystallite size, improvement of Ni active component dispersion and the increase of hard-to-reduce portion of nickel cations due to the growth in the degree of nickel- CexM1-xOy interaction. The identified variation of the textural, structural and redox characteristics of the Ni/CexM1-xOy catalysts should influence their performance in the catalytic process.

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Effects of preparation mode and doping on the genesis and properties of Ni/Ce1-xMxOy nanocrystallites (M = Gd, La, Mg) for catalytic applications

et al. 2019

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Effect of the support composition on the physicochemical properties of Ni/Ce1–x La x O y catalysts and their activity in an autothermal methane reforming reaction

Cited by 12 publications

References 47 publications

Control of Ni/Ce1-xMxOy Catalyst Properties Via the Selection of Dopant M = Gd, La, Mg. Part 2. Catalytic Activity

Control of Ni/Ce1-xMxOy Catalyst Properties Via the Selection of Dopant M = Gd, La, Mg. Part 2. Catalytic Activity

Control of Ni/Ce1-xMxOy Catalyst Properties Via the Selection of Dopant M = Gd, La, Mg. Part 1. Physicochemical Characteristics

Effects of preparation mode and doping on the genesis and properties of Ni/Ce1-xMxOy nanocrystallites (M = Gd, La, Mg) for catalytic applications

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