Evaluation of the effect of various catalysts on the yield of hydrogen and nanofiber carbon during pyrolysis of hydrocarbon gases

Abstract

This article provides a literary review of pyrolysis catalysts for the production of alternative energy fuel in the form of hydrogen, as well as an equally useful product of nanofiber carbon. A theoretical analysis of the effectiveness of the use of catalysts based on the yield of a useful product was carried out. It was found that the most promising catalysts for industrial use are high-percentage nickel and copper-nickel catalysts. Most effective catalyst in the process of obtaining hydrogen by the method of catalytic decomposition of hydrocarbon gases is the 40Ni/SiO2 catalyst, the yield of hydrogen when used is 80.7 mol/gcat, and the highest yield of nanofiber carbon 449 g/gcat makes it possible to obtain a bimetallic catalyst (75Ni-15Cu)/Al2O3. The methods of preparation of applied catalysts are also considered, the advantages and disadvantages of each are described. Keywords: bimetallic Fe-Co catalysts; bimetallic Ni-Cu catalysts; pyrolysis catalysts; conversion of hydrocarbon gases; nanofiber carbon; nickel catalyst; hydrogen production.