Cobalt Nanowires as a Catalyst for Ethylene Hydrogenation.

Autor: Panov, D. V., Bichkov, V. Yu., Tulenin, Yu. P., Zagorskiy, D. L.
Zdroj: Journal of Surface Investigation: X-Ray, Synchrotron & Neutron Techniques; Dec2023, Vol. 17 Issue 6, p1496-1501, 6p
Abstrakt: In this work, we demonstrate the effect of increasing the catalytic activity of the surface of cobalt in the ethylene hydrogenation reaction. The way to increase the activity of the surface is to increase its area by creating an array (set) of nanoscale nanowire columns on it. The nanowire arrays are studied by scanning electron microscopy before and after catalytic experiments. An estimated calculation of the increase in the surface area is carried out. It is shown that in the presence of an array of nanowires on the surface, its effective area increases tenfold. The proposed method makes it possible to use relatively cheap cobalt for catalysis. It is also important and convenient for practical use that the catalytic activity manifests itself at a rather low temperature, about 200°C. It is shown that when such a surface is used, the catalytic effect (conversion) increases to 20%. It is found that the magnitude of the effect depends on the geometrical parameters of the nanowires. The greatest effect is observed for nanowires with a diameter of 100 nm. It is also shown that the effect depends on their length, increasing with increasing length. Calculations of the increase in the area for structures with different diameters and lengths of nanowires are carried out. Their stability during catalysis is studied. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
Externí odkaz: