Header Image Title: THE PROMOTIONAL EFFECT OF POTASSIUM ON IRON-BASED SILICA SUPPORTED CATALYST FOR CO2 HYDROGENATION
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Title: THE PROMOTIONAL EFFECT OF POTASSIUM ON IRON-BASED SILICA SUPPORTED CATALYST FOR CO2 HYDROGENATION
THE PROMOTIONAL EFFECT OF POTASSIUM ON IRON-BASED SILICA SUPPORTED CATALYST FOR CO2 HYDROGENATION
Agija Stanke
10.5593/sgem2022/4.1/s17.21
10.5593/sgem2022/4.1
1314-2704
978-619-7603-44-6
English
22
4.1
•    Prof. DSc. Oleksandr Trofymchuk, UKRAINE 
•    Prof. Dr. hab. oec. Baiba Rivza, LATVIA
Renewable Energy Sources and Clean Technologies
Climate change is one of the biggest global challenges. As a result of human activity, large amounts of greenhouse gases are released into the atmosphere, contributing to global warming. Carbon dioxide (CO2) is a major greenhouse gas, therefore, hydrogenation of CO2 to value-added chemicals and liquid fuels is of great importance for a sustainable future. It is well known that iron-based catalysts can demonstrate good activity in the hydrogenation of CO2. However, catalysts need to be improved to promote the formation of liquid hydrocarbons. In this study, a series of silica supported iron catalysts promoted with potassium were prepared by impregnation method. The samples were characterized by X-ray fluorescence spectroscopy, X-ray diffraction, and N2 adsorption-desorption analysis. Catalytic performance of K-0, K-2, and K-5 was investigated for CO2 hydrogenation in a fixed bed reactor operated at 300 degrees Celsius and 20 bar. The reaction products were analysed by gas chromatography and FT-IR spectroscopy. The results showed that promotion with potassium reduces the selectivity of methane and reduces the amount of gas phase hydrocarbons. At the same time promotion with potassium contributed to the formation of alcohols in the liquid phase products. The highest methanol yield was obtained using the K-2 catalyst, while the K-5 catalyst promoted the formation of both methanol and ethanol in the liquid phase.
CO2 hydrogenation, iron catalyst, potassium
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This work has been supported by the European Social Fund within the Project No 8.2.2.0/20/I/008 «Strengthening of PhD students and academic personnel of Riga Technical University and BA School of Business and Finance in the strategic fields of specialization» of the Specific Objective 8.2.2 «To Strengthen Academic Staff of Higher Education Institutions in Strategic Specialization Areas» of the Operational Programme «Growth and Employment». This research/publication was supported by Riga Technical University's Doctoral Grant programme.
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https://doi.org/10.5593/sgem2022/4.1/s17.21
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Proceedings of 22nd International Multidisciplinary Scientific GeoConference SGEM 2022
22nd International Multidisciplinary Scientific GeoConference SGEM 2022, 04 - 10 July, 2022
Proceedings Paper
STEF92 Technology
International Multidisciplinary Scientific GeoConference SGEM
SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Serbian Acad Sci and Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts and Letters; Acad Fine Arts Zagreb Croatia; Croatian Acad Sci and Arts; Acad Sci Moldova; Montenegrin Acad Sci and Arts; Georgian Acad Sci; Acad Fine Arts and Design Bratislava; Turkish Acad Sci.
161-166
04 - 10 July, 2022
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