Effect of preparation method on physicochemical properties of a novel Co–Fe nano catalyst

The main approach of this study was to investigate the effect of the type of synthesis method on the improvement of catalyst performance in Fischer–Tropsch reaction. For this purpose, a series of the novel catalysts were synthesized using iron and cobalt nitrate salts, tetraethoxysilane and novolac...

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Bibliographic Details
Published in:Journal of the Iranian Chemical Society 2021, Vol.18 (8), p.2009-2015
Main Authors: Ehsani Nia, Mahsa, Sedighi, Behnam, Joshaghani, Mohammad
Format: Article
Language:English
Subjects:
Analytical Chemistry
Biochemistry
Catalysts
Catalytic activity
Catalytic converters
Chemical synthesis
Chemistry
Chemistry and Materials Science
Cobalt
Fourier transforms
Inorganic Chemistry
Iron
Novolacs
Organic Chemistry
Original Paper
Oxidation
Paraffins
Phenolic resins
Physical Chemistry
Selectivity
Silicon dioxide
Tetraethyl orthosilicate
Valence
X-ray diffraction
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Summary:The main approach of this study was to investigate the effect of the type of synthesis method on the improvement of catalyst performance in Fischer–Tropsch reaction. For this purpose, a series of the novel catalysts were synthesized using iron and cobalt nitrate salts, tetraethoxysilane and novolac phenolic resin by different method. These catalysts were abbreviated as M1–Co–Fe–novolac/SiO 2 , M2–Co–Fe–novolac/SiO 2 , and M3–Co–Fe–novolac/SiO 2 and characterized using different techniques. The results of the Brunauer–Emmett–Teller and Fourier transform infrared techniques showed that M2–Co–Fe–novolac/SiO 2 catalyst has a higher surface area than the other two ones. This catalyst was analyzed by using X-ray diffraction (XRD), scanning electron microscopy, energy-dispersive X-ray, and temperature-programed reduction (TPR) techniques. The XRD results confirmed the appearance of suitable active phases, such as metal phase, carbide, and low oxidation state of metals. Based on TPR results, the lower reduction temperature, compared with similar samples, confirmed the high activity of the M2–Co–Fe–novolac/SiO 2 catalyst. Catalytic activity and selectivity for Fischer–Tropsch reaction were investigated in the standard conditions by using catalytic tests. The high conversion percentage of CO indicated high activity of the catalyst. On the other hand, the olefin to paraffin ratio (O/P), which was a criterion for catalytic efficiency in industrial, was also acceptable.
ISSN:1735-207X
1735-2428
DOI:10.1007/s13738-021-02176-1