Eng SYNTHESIS OF POLYOXIDE CATALYSTS AND THEIR APPLICATION POSSIBILITY IN CATALYTIC CONVERSION OF METHANE

doi:10.56292/SJFSU/vol31_iss3/a%p

Authors

Mukhamadiyev

Samarkand State University named after Sh. Rashidov

https://orcid.org/0000-0003-4776-4625
Samarqand davlat veterinariya meditsinasi, chorvachilik va biotexnologiyalar universiteti

https://orcid.org/0000-0002-9223-7480

DOI:

https://doi.org/10.56292/SJFSU/vol31_iss3/a%25p

Keywords:

catalyst, solution-combustion synthesis, composite, methane, carbon dioxide, conversion, synthesis gas, temperature.

Abstract

The aim of this study was to investigate nickel-containing catalysts used for reducing greenhouse gases and the carbonate conversion of methane. The objects of the study were polyoxide catalysts with the compositions 4NiO∙ZrO₂/5Al₂O₃, 4NiO∙TiO₂/5Al₂O₃ and 3NiO∙TiO₂∙ZrO₂/5Al₂O₃, synthesized via sol-gel technology and solution-combustion synthesis based on d-element oxides. The influence of temperature on the process of syngas production through carbonate conversion of methane was examined. The development of cost-effective and highly efficient catalytic systems for the carbonate conversion of methane is crucial for the sustainable production of hydrogen (H₂). To ensure the process is efficient, we studied the application of TiO₂∙ZrO₂ as a promoter in Ni-containing catalysts, as well as the use of aluminum oxide (Al₂O₃) as a support. Addition of TiO₂∙ZrO₂ as a promoter resulted in increased basicity and a significant increase in the yield of synthesis gas. Effect of temperature on the carbonate conversion reaction process and concentration of the main conversion products using 4NiO∙ZrO₂/5Al₂O₃, catalyst: at a temperature of 850°C, methane conversion was 87%, and carbon dioxide – 77.1%, when using 4NiO∙TiO₂/5Al₂O₃ catalyst, methane conversion was 71.3%, and carbon dioxide – 65.2%, and when using 3NiO∙TiO₂∙ZrO₂/5Al₂O₃catalyst, methane conversion was 92.1%, and carbon dioxide – 87%.

Author Biographies

Mukhamadiyev, Samarkand State University named after Sh. Rashidov

Sh. Rashidov nomidagi Samarqand davlat universiteti, kimyo fanlari doktori, professor
, Samarqand davlat veterinariya meditsinasi, chorvachilik va biotexnologiyalar universiteti

Samarqand davlat veterinariya meditsinasi, chorvachilik va biotexnologiyalar universiteti, k.f.b.f.d., (PhD)

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