Ni–Ru-containing mixed oxide-based composites as precursors for ethanol steam reforming catalysts: Effect of the synthesis methods on the structural and catalytic properties
Ethanol steam reforming catalyst’s precursors, i.e., nanocomposites of complex oxides with the general formula [Pr0.15Sm0.15Ce0.35Zr0.35O2 + LaMn0.45Ni0.45Ru0.1O3] (1:1 by mass), were synthesized by three different methods. It was shown that two synthesis methods – ultrasonic dispersion and sequenti...
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De Gruyter
2021
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oai:doaj.org-article:14229af3dc064908a8ce34bffb87b1152021-12-05T14:10:44ZNi–Ru-containing mixed oxide-based composites as precursors for ethanol steam reforming catalysts: Effect of the synthesis methods on the structural and catalytic properties2391-542010.1515/chem-2021-0062https://doaj.org/article/14229af3dc064908a8ce34bffb87b1152021-06-01T00:00:00Zhttps://doi.org/10.1515/chem-2021-0062https://doaj.org/toc/2391-5420Ethanol steam reforming catalyst’s precursors, i.e., nanocomposites of complex oxides with the general formula [Pr0.15Sm0.15Ce0.35Zr0.35O2 + LaMn0.45Ni0.45Ru0.1O3] (1:1 by mass), were synthesized by three different methods. It was shown that two synthesis methods – ultrasonic dispersion and sequential polymeric method, lead to the formation of the nanocomposite perovskite–fluorite system with the specific surface area up to 50 m2/g. Reduction of samples at 400–500°C lead to the formation of Ni–Ru alloy nanoparticles strongly bound with the surface of oxide nanocomposite. Catalytic tests in ethanol steam reforming reaction at 500–600°C showed the highest specific activity of the sample prepared by the sequential polymeric method due to the location of Ni- and Ru-containing perovskite mainly on the surface of the composite providing a high concentration of active metal centers. At higher temperatures for all samples, ethanol conversion approached 100% with hydrogen yield varying in the range of 65–75%. A study of spent catalysts confirmed the absence of carbon deposits after long-term catalytic tests at 650°C.Naurzkulova Symbat MuratbekovnaArapova Marina VasilievnaIshchenko Arcady VladimirovichKrieger Tamara AndreevnaSaraev Andrei AleksandrovichKaichev Vasilii VasilievichRogov Vladimir AlekseevichKrasnov Aleksei VyacheslavovichMassalimova Bakytgul KabykenovnaSadykov Vladislav AleksandrovichDe GruyterarticleperovskitefluoriteethanolreforminghydrogenChemistryQD1-999ENOpen Chemistry, Vol 19, Iss 1, Pp 696-708 (2021) |
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| collection |
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EN |
| topic |
perovskite fluorite ethanol reforming hydrogen Chemistry QD1-999 |
| spellingShingle |
perovskite fluorite ethanol reforming hydrogen Chemistry QD1-999 Naurzkulova Symbat Muratbekovna Arapova Marina Vasilievna Ishchenko Arcady Vladimirovich Krieger Tamara Andreevna Saraev Andrei Aleksandrovich Kaichev Vasilii Vasilievich Rogov Vladimir Alekseevich Krasnov Aleksei Vyacheslavovich Massalimova Bakytgul Kabykenovna Sadykov Vladislav Aleksandrovich Ni–Ru-containing mixed oxide-based composites as precursors for ethanol steam reforming catalysts: Effect of the synthesis methods on the structural and catalytic properties |
| description |
Ethanol steam reforming catalyst’s precursors, i.e., nanocomposites of complex oxides with the general formula [Pr0.15Sm0.15Ce0.35Zr0.35O2 + LaMn0.45Ni0.45Ru0.1O3] (1:1 by mass), were synthesized by three different methods. It was shown that two synthesis methods – ultrasonic dispersion and sequential polymeric method, lead to the formation of the nanocomposite perovskite–fluorite system with the specific surface area up to 50 m2/g. Reduction of samples at 400–500°C lead to the formation of Ni–Ru alloy nanoparticles strongly bound with the surface of oxide nanocomposite. Catalytic tests in ethanol steam reforming reaction at 500–600°C showed the highest specific activity of the sample prepared by the sequential polymeric method due to the location of Ni- and Ru-containing perovskite mainly on the surface of the composite providing a high concentration of active metal centers. At higher temperatures for all samples, ethanol conversion approached 100% with hydrogen yield varying in the range of 65–75%. A study of spent catalysts confirmed the absence of carbon deposits after long-term catalytic tests at 650°C. |
| format |
article |
| author |
Naurzkulova Symbat Muratbekovna Arapova Marina Vasilievna Ishchenko Arcady Vladimirovich Krieger Tamara Andreevna Saraev Andrei Aleksandrovich Kaichev Vasilii Vasilievich Rogov Vladimir Alekseevich Krasnov Aleksei Vyacheslavovich Massalimova Bakytgul Kabykenovna Sadykov Vladislav Aleksandrovich |
| author_facet |
Naurzkulova Symbat Muratbekovna Arapova Marina Vasilievna Ishchenko Arcady Vladimirovich Krieger Tamara Andreevna Saraev Andrei Aleksandrovich Kaichev Vasilii Vasilievich Rogov Vladimir Alekseevich Krasnov Aleksei Vyacheslavovich Massalimova Bakytgul Kabykenovna Sadykov Vladislav Aleksandrovich |
| author_sort |
Naurzkulova Symbat Muratbekovna |
| title |
Ni–Ru-containing mixed oxide-based composites as precursors for ethanol steam reforming catalysts: Effect of the synthesis methods on the structural and catalytic properties |
| title_short |
Ni–Ru-containing mixed oxide-based composites as precursors for ethanol steam reforming catalysts: Effect of the synthesis methods on the structural and catalytic properties |
| title_full |
Ni–Ru-containing mixed oxide-based composites as precursors for ethanol steam reforming catalysts: Effect of the synthesis methods on the structural and catalytic properties |
| title_fullStr |
Ni–Ru-containing mixed oxide-based composites as precursors for ethanol steam reforming catalysts: Effect of the synthesis methods on the structural and catalytic properties |
| title_full_unstemmed |
Ni–Ru-containing mixed oxide-based composites as precursors for ethanol steam reforming catalysts: Effect of the synthesis methods on the structural and catalytic properties |
| title_sort |
ni–ru-containing mixed oxide-based composites as precursors for ethanol steam reforming catalysts: effect of the synthesis methods on the structural and catalytic properties |
| publisher |
De Gruyter |
| publishDate |
2021 |
| url |
https://doaj.org/article/14229af3dc064908a8ce34bffb87b115 |
| work_keys_str_mv |
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| _version_ |
1718371776829849600 |