Impact of barium and lanthanum incorporation to supported Pt and Rh on α-Al2O3 in the dry reforming of methane

Ghelamallah, Madani; Granger, Pascal

doi:10.1016/j.fuel.2012.02.068

Cited by 70 publications

(23 citation statements)

References 30 publications

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“…As a result, precious-metals-based catalysts, for instance, Ru, Rh, Pd, Ir, Pt, etc., exhibited good catalytic activity and stability. However, the disadvantage of using noble-metals-based catalysts is their high cost [5][6][7]. Ni-based catalysts, due to good catalytic activity and low cost, have been widely investigated for the DRM reaction [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Encapsulated Ni@La2O3/SiO2 Catalyst with a One-Pot Method for the Dry Reforming of Methane

Wang

Liu

et al. 2019

Catalysts

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Ni nanoparticles encapsulated within La 2 O 3 porous system (Ni@La 2 O 3 ), the latter supported on SiO 2 (Ni@La 2 O 3 )/SiO 2 ), effectively inhibit carbon deposition for the dry reforming of methane. In this study, Ni@La 2 O 3 /SiO 2 catalyst was prepared using a one-pot colloidal solution combustion method. Catalyst characterization demonstrates that the amorphous La 2 O 3 layer was coated on SiO 2 , and small Ni nanoparticles were encapsulated within the layer of amorphous La 2 O 3 . During 50 h of dry reforming of methane at 700 • C and using a weight hourly space velocity (WHSV) of 120,000 mL g cat −1 h −1 , the CH 4 conversion obtained was maintained at 80%, which is near the equilibrium value, while that of impregnated Ni-La 2 O 3 /SiO 2 catalyst decreased from 63% to 49%. The Ni@La 2 O 3 /SiO 2 catalyst exhibited very good resistance to carbon deposition, and only 1.6 wt% carbon was formed on the Ni@La 2 O 3 /SiO 2 catalyst after 50 h of reaction, far lower than that of 11.5 wt% deposited on the Ni-La 2 O 3 /SiO 2 catalyst. This was mainly attributed to the encapsulated Ni nanoparticles in the amorphous La 2 O 3 layer. In addition, after reaction at 700 • C for 80 h with a high WHSV of 600,000 mL g cat −1 h −1 , the Ni@La 2 O 3 /SiO 2 catalyst exhibited high CH 4 conversion rate, ca. 10.10 mmol g Ni −1 s −1 . These findings outline a simple synthesis method to prepare supported encapsulated Ni within a metal oxide porous structure catalyst for the dry reforming of methane reaction.

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Section: Introductionmentioning

confidence: 99%

Encapsulated Ni@La2O3/SiO2 Catalyst with a One-Pot Method for the Dry Reforming of Methane

Wang

Liu

et al. 2019

Catalysts

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“…Conventionally, g-alumina or zeolites [6,18] were used as the catalyst support for this reaction. It was reported in the literature that mesoporous catalyst supports, like MCM-41, were less susceptible to catalyst deactivation due to coke formation than the conventional microporous materials [19].…”

Section: Introductionmentioning

confidence: 99%

Effect of synthesis route of mesoporous zirconia based Ni catalysts on coke minimization in conversion of biogas to synthesis gas

Mustu

Yasyerli

et al. 2015

International Journal of Hydrogen Energy

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“…The results show a maximum shifting at the temperature of 825 • C for Al 0 Ce 1 , and corresponding to H 2 uptake more than 600 µmol per gram, without significant H 2 consumption on Al 1 Ce 0 calcined at 900 • C (see Fig. 4) [13]. It is also worthwhile to notice that a lessening in H 2 consumption on Al 0.85 Ce 0.15 would suggest that Al 2 O 3 would likely interact with CeO 2 [14].…”

Section: Resultsmentioning

confidence: 88%

The Role of CeO₂-Doping of γ-Al_{_2}O_{_3} on its Structural and Superficial Area

et al. 2017

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A series of samples, noted AlxCe1−x has been prepared by hydrolysis, from γ-Al2O3 and CeO2. These samples were calcined under air at 450, 900 and 1200 • C, and then characterized by specific surface area, X-ray diffraction and thermoreduction programmed under H2. Obtained results show that after calcination at 450 and 900 • C, the cerium decreases the surface of alumina. Results of X-ray diffraction and thermoreduction programmed under H2 experiments showed that the samples are constituted of: γ-Al2O3 and CeO2. The global consumption of hydrogen increase with rate of CeO2 added. At 1200 • C, the sintering of the samples is very important and γ-Al2O3 is transformed into the α-phase. The decrease in specific surface area is more accentuated for Al1Ce0 sample, since sintering occurs due to the growth in crystallite size. Thermoreduction programmed under H2 experiments show that reduction of CeO2 much more accentuated for ceria samples or its decrease can reflect some alterations of the nature of interactions between Al2O3 and CeO2.

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Impact of barium and lanthanum incorporation to supported Pt and Rh on α-Al2O3 in the dry reforming of methane

Cited by 70 publications

References 30 publications

Encapsulated Ni@La2O3/SiO2 Catalyst with a One-Pot Method for the Dry Reforming of Methane

Encapsulated Ni@La2O3/SiO2 Catalyst with a One-Pot Method for the Dry Reforming of Methane

Effect of synthesis route of mesoporous zirconia based Ni catalysts on coke minimization in conversion of biogas to synthesis gas

The Role of CeO₂-Doping of γ-Al_{_2}O_{_3} on its Structural and Superficial Area

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Impact of barium and lanthanum incorporation to supported Pt and Rh on α-Al2O3 in the dry reforming of methane

Cited by 70 publications

References 30 publications

Encapsulated Ni@La2O3/SiO2 Catalyst with a One-Pot Method for the Dry Reforming of Methane

Encapsulated Ni@La2O3/SiO2 Catalyst with a One-Pot Method for the Dry Reforming of Methane

Effect of synthesis route of mesoporous zirconia based Ni catalysts on coke minimization in conversion of biogas to synthesis gas

The Role of CeO2-Doping of γ-Al_2O_3 on its Structural and Superficial Area

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The Role of CeO₂-Doping of γ-Al_{_2}O_{_3} on its Structural and Superficial Area