Carbon Formation during Methane Dry Reforming over Ni-Containing Ceria-Zirconia Catalysts
Two series of Ni/Ce(Ti/Nb)ZrO<sub>2</sub> catalysts were prepared using citrate route and original solvothermal continuous flow synthesis in supercritical isopropanol and studied in dry reforming of methane (DRM). TEM, XPS and FTIRS of adsorbed CO confirm influence of support composition...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-10-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/20/3676 |
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| author | Ekaterina Smal Yulia Bespalko Marina Arapova Valeria Fedorova Konstantin Valeev Nikita Eremeev Ekaterina Sadovskaya Tamara Krieger Tatiana Glazneva Vladislav Sadykov Mikhail Simonov |
| author_facet | Ekaterina Smal Yulia Bespalko Marina Arapova Valeria Fedorova Konstantin Valeev Nikita Eremeev Ekaterina Sadovskaya Tamara Krieger Tatiana Glazneva Vladislav Sadykov Mikhail Simonov |
| author_sort | Ekaterina Smal |
| collection | DOAJ |
| description | Two series of Ni/Ce(Ti/Nb)ZrO<sub>2</sub> catalysts were prepared using citrate route and original solvothermal continuous flow synthesis in supercritical isopropanol and studied in dry reforming of methane (DRM). TEM, XPS and FTIRS of adsorbed CO confirm influence of support composition and preparation method on the catalysts’ morphology and surface features. The oxygen mobility was studied by isotope heteroexchange with C<sup>18</sup>O<sub>2</sub>. After testing in DRM, carbon deposits after catalysts’ testing in DRM were investigated by temperature-programmed oxidation with thermo-gravimetric analysis. The lowest amounts of carbon deposits were obtained for unmodified Ni-CeZr and Ni-CeNbZr compositions. Ti addition lead to an increased amount of carbon, which was removed at higher temperatures. The use of supercritical supports also resulted in the formation of a higher amount of coke. Catalysts prepared by the supercritical synthesis were tested in DRM for 25 h. The highest activity drop was observed in the first three hours. For all compositions, close values of carbon deposits were revealed. |
| first_indexed | 2024-03-09T19:40:58Z |
| format | Article |
| id | doaj.art-f573b106b3b34bef89d2874c4b02c95e |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T19:40:58Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-f573b106b3b34bef89d2874c4b02c95e2023-11-24T01:41:38ZengMDPI AGNanomaterials2079-49912022-10-011220367610.3390/nano12203676Carbon Formation during Methane Dry Reforming over Ni-Containing Ceria-Zirconia CatalystsEkaterina Smal0Yulia Bespalko1Marina Arapova2Valeria Fedorova3Konstantin Valeev4Nikita Eremeev5Ekaterina Sadovskaya6Tamara Krieger7Tatiana Glazneva8Vladislav Sadykov9Mikhail Simonov10Department of Heterogeneous Catalysis, Boreskov Institute of Catalysis, 630090 Novosibirsk, RussiaDepartment of Heterogeneous Catalysis, Boreskov Institute of Catalysis, 630090 Novosibirsk, RussiaDepartment of Heterogeneous Catalysis, Boreskov Institute of Catalysis, 630090 Novosibirsk, RussiaDepartment of Heterogeneous Catalysis, Boreskov Institute of Catalysis, 630090 Novosibirsk, RussiaDepartment of Heterogeneous Catalysis, Boreskov Institute of Catalysis, 630090 Novosibirsk, RussiaDepartment of Heterogeneous Catalysis, Boreskov Institute of Catalysis, 630090 Novosibirsk, RussiaDepartment of Heterogeneous Catalysis, Boreskov Institute of Catalysis, 630090 Novosibirsk, RussiaDepartment of Heterogeneous Catalysis, Boreskov Institute of Catalysis, 630090 Novosibirsk, RussiaDepartment of Heterogeneous Catalysis, Boreskov Institute of Catalysis, 630090 Novosibirsk, RussiaDepartment of Heterogeneous Catalysis, Boreskov Institute of Catalysis, 630090 Novosibirsk, RussiaDepartment of Heterogeneous Catalysis, Boreskov Institute of Catalysis, 630090 Novosibirsk, RussiaTwo series of Ni/Ce(Ti/Nb)ZrO<sub>2</sub> catalysts were prepared using citrate route and original solvothermal continuous flow synthesis in supercritical isopropanol and studied in dry reforming of methane (DRM). TEM, XPS and FTIRS of adsorbed CO confirm influence of support composition and preparation method on the catalysts’ morphology and surface features. The oxygen mobility was studied by isotope heteroexchange with C<sup>18</sup>O<sub>2</sub>. After testing in DRM, carbon deposits after catalysts’ testing in DRM were investigated by temperature-programmed oxidation with thermo-gravimetric analysis. The lowest amounts of carbon deposits were obtained for unmodified Ni-CeZr and Ni-CeNbZr compositions. Ti addition lead to an increased amount of carbon, which was removed at higher temperatures. The use of supercritical supports also resulted in the formation of a higher amount of coke. Catalysts prepared by the supercritical synthesis were tested in DRM for 25 h. The highest activity drop was observed in the first three hours. For all compositions, close values of carbon deposits were revealed.https://www.mdpi.com/2079-4991/12/20/3676methane dry reformingcarbon formationsupercritical synthesisfluoriteheterogeneous catalysis |
| spellingShingle | Ekaterina Smal Yulia Bespalko Marina Arapova Valeria Fedorova Konstantin Valeev Nikita Eremeev Ekaterina Sadovskaya Tamara Krieger Tatiana Glazneva Vladislav Sadykov Mikhail Simonov Carbon Formation during Methane Dry Reforming over Ni-Containing Ceria-Zirconia Catalysts Nanomaterials methane dry reforming carbon formation supercritical synthesis fluorite heterogeneous catalysis |
| title | Carbon Formation during Methane Dry Reforming over Ni-Containing Ceria-Zirconia Catalysts |
| title_full | Carbon Formation during Methane Dry Reforming over Ni-Containing Ceria-Zirconia Catalysts |
| title_fullStr | Carbon Formation during Methane Dry Reforming over Ni-Containing Ceria-Zirconia Catalysts |
| title_full_unstemmed | Carbon Formation during Methane Dry Reforming over Ni-Containing Ceria-Zirconia Catalysts |
| title_short | Carbon Formation during Methane Dry Reforming over Ni-Containing Ceria-Zirconia Catalysts |
| title_sort | carbon formation during methane dry reforming over ni containing ceria zirconia catalysts |
| topic | methane dry reforming carbon formation supercritical synthesis fluorite heterogeneous catalysis |
| url | https://www.mdpi.com/2079-4991/12/20/3676 |
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