The effects of Fe, Mg, and Pt-doping on the improvement of Ni stabilized on Al2O3-CeO3 catalysts for methane dry reforming

Jawad, Abbas

doi:10.1039/d3ra04809h

Cited by 5 publications

(3 citation statements)

References 70 publications

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“…The second temperature range corresponds to a decomposition of bidentate carbonate species, which characterize the medium-strength basic sites . Furthermore, the produced carbonates can efficiently react with the deposited carbon; therefore, the carbonates’ presence may assist in removing the deposited carbon, resulting in increased catalytic stability …”

Section: Resultsmentioning

confidence: 99%

“…As demonstrated in the CO 2 -TPD profiles, increasing the basicity of catalysts can increase the rate of CO 2 activation, which has a major impact on catalytic performance. Based on studies, adding metal oxides can effectively increase the surface basicity of the catalysts, thus improving the CO 2 adsorption capacity of metal oxide (M = Mg and Fe)-doped Ni catalysts …”

Section: Resultsmentioning

confidence: 99%

“…59 Furthermore, the produced carbonates can efficiently react with the deposited carbon; therefore, the carbonates' presence may assist in removing the deposited carbon, resulting in increased catalytic stability. 60 It was observed clearly that the CO 2 desorption curves of the 10Ni-3Fe-MgO•Al 2 O 3 catalyst exhibited two CO 2 desorption peaks, implying the presence of two basic sites. The CO 2 desorption peak at a lower temperature is due to weak basic sites; however, the high-temperature desorption peak follows the strong basic sites.…”

Section: Effect Of Steam Addition To Drymentioning

confidence: 89%

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Preparation and Evaluation of Resistance Coke Formation Catalysts in Combined Reforming of Methane Using Steam and Oxygen for the Production of Synthesis Gas

Miri,

Meshkani,

Rezaei

et al. 2024

Ind. Eng. Chem. Res.

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Ni-based catalysts with different promoters, such as Fe, La, Zr, Ce, and Ca, were prepared using the one-step sol−gel method and tested for their performance in the combined reforming of methane using steam and oxygen. The catalysts were characterized by XRD, SEM, TPO, BET, and TPR analysis. The consequences revealed that deposited carbon was lower on the surface of the 10% Ni-3% Fe-MgO•Al 2 O 3 catalyst in oxygencombined CH 4 reforming. The Fe 2 O 3 -doped sample depicted the highest CH 4 conversion, more than 65%, and showed a higher catalytic stability for O 2 reforming of methane. In addition, introducing steam into the feeds benefited the performance of catalysts due to lower coke formation, and the H 2 /CO ratio was changed from 1.5 to 3 at 700 °C. It is concluded that the high catalytic efficiency of the Fe 2 O 3 -doped sample in combined reforming of methane was associated with its high reducibility and more reduction of NiO species.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%