Effect of Cobalt Oxide Content on the Activity of NiO-Co2O3/γ-Al2O3 Catalyst in the Reaction of Dry Reforming of Methane to Synthesis Gas
The effect of cobalt oxide content on the activity of NiO-Co2O3/γ-Al2O3 catalyst was investigated in process of dry reforming of methane (DRM) to synthesis gas. It was found that among the studied catalysts the highest activity is shown by the NiO-Co2O3/ γ-Al2O3, where methane conversion is 89%. It...
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al-Farabi Kazakh National University
2020-09-01
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| Series: | Eurasian Chemico-Technological Journal |
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| Online Access: | https://ect-journal.kz/index.php/ectj/article/view/978 |
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doaj-e2f78afbf6f04b45bd40d3276a55500e2020-11-25T04:03:55Zengal-Farabi Kazakh National UniversityEurasian Chemico-Technological Journal 1562-39202522-48672020-09-0122310.18321/ectj978Effect of Cobalt Oxide Content on the Activity of NiO-Co2O3/γ-Al2O3 Catalyst in the Reaction of Dry Reforming of Methane to Synthesis GasL. K. Myltykbayeva0G. E. Ergazieva1M.M. Telbayeva2Z. R. Ismagilov3K. Dossumov4А. N. Popova5S. А. Sozynov6R. H. Turgumbayeva7L. M. Hitsova8Institute of Combustion Problems, 172 Bogenbai batyr str., Almaty, Kazakhstan; al-Farabi Kazakh National University, 71 al-Farabi str., Almaty, KazakhstanInstitute of Combustion Problems, 172 Bogenbai batyr str., Almaty, Kazakhstan; al-Farabi Kazakh National University, 71 al-Farabi str., Almaty, KazakhstanInstitute of Combustion Problems, 172 Bogenbai batyr str., Almaty, Kazakhstan; Kazakh National Women’s Teacher Training University, 99 Aiteke bi, Almaty, KazakhstanFederal Research Center of Coal and Coal Chemistry SB RAS, 18 pr. Sovetskiy, Kemerovo, RussiaInstitute of Combustion Problems, 172 Bogenbai batyr str., Almaty, KazakhstanFederal Research Center of Coal and Coal Chemistry SB RAS, 18 pr. Sovetskiy, Kemerovo, RussiaFederal Research Center of Coal and Coal Chemistry SB RAS, 18 pr. Sovetskiy, Kemerovo, RussiaAbay Kazakh National Pedagogical University, 28 Kazybek bi, Almaty, KazakhstanFederal Research Center of Coal and Coal Chemistry SB RAS, 18 pr. Sovetskiy, Kemerovo, Russia The effect of cobalt oxide content on the activity of NiO-Co2O3/γ-Al2O3 catalyst was investigated in process of dry reforming of methane (DRM) to synthesis gas. It was found that among the studied catalysts the highest activity is shown by the NiO-Co2O3/ γ-Al2O3, where methane conversion is 89%. It was determined by the scanning electron microscopy (SEM) and X-ray diffraction analysis (XRD) there are oxides of Ni and Co in the form of nanosized particles on active NiO-Co2O3/γ-Al2O3 catalyst and Co-Ni alloys, formed after the reaction of DRM, the size of 17‒23 nm. Thermogravimetric Analysis (TGA)/ Differential Thermal Analysis (DTA)/ Differential Scanning Calorimetry (DSC) of catalyst showed that the highest weight loss (2.7%) is observed at a degree from 30 to 260 °C after DRM. After heating above 300 °C there is a slight increase in weight, accompanied by an exothermic effect on the DSC curve due to the gas adsorption used to purge the unit. The data indicate the absence of coke formation on NiO-Co2O3/γ-Al2O3 surface. According to TPR-H2 there are peaks at relatively low temperatures of Т1mах = 205 °C and Т2mах = 497 °C on thermally programmed reduction (TPR) TPR-Н2 spectrum of NiO-Со2О3/γ-Al2O3, which are associated with the formation of easily reducible cobalt and nickel oxides, indicating the presence of active and mobile oxygen in the catalyst. These results confirm that the activity of NiO-Co2O3/γ-Al2O3 is due to the formation of nanophases, the presence of active oxygen, and the absence of coke on the catalyst surface. https://ect-journal.kz/index.php/ectj/article/view/978MethaneDry reformingSynthesis gasCatalystNanophases |
| collection |
DOAJ |
| language |
English |
| format |
Article |
| sources |
DOAJ |
| author |
L. K. Myltykbayeva G. E. Ergazieva M.M. Telbayeva Z. R. Ismagilov K. Dossumov А. N. Popova S. А. Sozynov R. H. Turgumbayeva L. M. Hitsova |
| spellingShingle |
L. K. Myltykbayeva G. E. Ergazieva M.M. Telbayeva Z. R. Ismagilov K. Dossumov А. N. Popova S. А. Sozynov R. H. Turgumbayeva L. M. Hitsova Effect of Cobalt Oxide Content on the Activity of NiO-Co2O3/γ-Al2O3 Catalyst in the Reaction of Dry Reforming of Methane to Synthesis Gas Eurasian Chemico-Technological Journal Methane Dry reforming Synthesis gas Catalyst Nanophases |
| author_facet |
L. K. Myltykbayeva G. E. Ergazieva M.M. Telbayeva Z. R. Ismagilov K. Dossumov А. N. Popova S. А. Sozynov R. H. Turgumbayeva L. M. Hitsova |
| author_sort |
L. K. Myltykbayeva |
| title |
Effect of Cobalt Oxide Content on the Activity of NiO-Co2O3/γ-Al2O3 Catalyst in the Reaction of Dry Reforming of Methane to Synthesis Gas |
| title_short |
Effect of Cobalt Oxide Content on the Activity of NiO-Co2O3/γ-Al2O3 Catalyst in the Reaction of Dry Reforming of Methane to Synthesis Gas |
| title_full |
Effect of Cobalt Oxide Content on the Activity of NiO-Co2O3/γ-Al2O3 Catalyst in the Reaction of Dry Reforming of Methane to Synthesis Gas |
| title_fullStr |
Effect of Cobalt Oxide Content on the Activity of NiO-Co2O3/γ-Al2O3 Catalyst in the Reaction of Dry Reforming of Methane to Synthesis Gas |
| title_full_unstemmed |
Effect of Cobalt Oxide Content on the Activity of NiO-Co2O3/γ-Al2O3 Catalyst in the Reaction of Dry Reforming of Methane to Synthesis Gas |
| title_sort |
effect of cobalt oxide content on the activity of nio-co2o3/γ-al2o3 catalyst in the reaction of dry reforming of methane to synthesis gas |
| publisher |
al-Farabi Kazakh National University |
| series |
Eurasian Chemico-Technological Journal |
| issn |
1562-3920 2522-4867 |
| publishDate |
2020-09-01 |
| description |
The effect of cobalt oxide content on the activity of NiO-Co2O3/γ-Al2O3 catalyst was investigated in process of dry reforming of methane (DRM) to synthesis gas. It was found that among the studied catalysts the highest activity is shown by the NiO-Co2O3/ γ-Al2O3, where methane conversion is 89%. It was determined by the scanning electron microscopy (SEM) and X-ray diffraction analysis (XRD) there are oxides of Ni and Co in the form of nanosized particles on active NiO-Co2O3/γ-Al2O3 catalyst and Co-Ni alloys, formed after the reaction of DRM, the size of 17‒23 nm. Thermogravimetric Analysis (TGA)/ Differential Thermal Analysis (DTA)/ Differential Scanning Calorimetry (DSC) of catalyst showed that the highest weight loss (2.7%) is observed at a degree from 30 to 260 °C after DRM. After heating above 300 °C there is a slight increase in weight, accompanied by an exothermic effect on the DSC curve due to the gas adsorption used to purge the unit. The data indicate the absence of coke formation on NiO-Co2O3/γ-Al2O3 surface. According to TPR-H2 there are peaks at relatively low temperatures of Т1mах = 205 °C and Т2mах = 497 °C on thermally programmed reduction (TPR) TPR-Н2 spectrum of NiO-Со2О3/γ-Al2O3, which are associated with the formation of easily reducible cobalt and nickel oxides, indicating the presence of active and mobile oxygen in the catalyst. These results confirm that the activity of NiO-Co2O3/γ-Al2O3 is due to the formation of nanophases, the presence of active oxygen, and the absence of coke on the catalyst surface.
|
| topic |
Methane Dry reforming Synthesis gas Catalyst Nanophases |
| url |
https://ect-journal.kz/index.php/ectj/article/view/978 |
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