INFLUENCE OF THE TYPE OF CATALYSTS ON THE FORMATION OF A SUPERHYDROPHOBIC CARBON NANOMATERIAL IN HYDROCARBON FLAMES

The authors present results of synthesis of superhydrophobic soot in fl ames of various hydrocarbons (methane, propane, butane, and polyethylene waste) using metallic catalysts of the gauze type from nichrome wire and of the honeycomb type from nickel plates, and also natural aluminosilicates. An analysis of hydrophobic characteristics of the obtained samples of soot has shown a substantial infl uence of the catalysts on its hydrophobic properties. The best samples of soot with a wetting angle larger than 160^o were obtained during the combustion of gaseous hydrocarbons with the use of the honeycomb-type nickel catalyst. Soot samples obtained during the combustion of propane with a honeycomb-type nickel catalyst had a wetting angle within 160–165^o , suggesting the presence of superhydrophobic properties in the soot. These samples were characterized by the large degree of graphitization (≈20%), which is due to the infl uence of metallic nickel on the structure of formed soot particles.
   
Author:  G. T. Smagulova, M. Nazhipkyzy, B. T. Lesbaev, A. E. Bakkara, N. G. Prikhod′ko, and Z. A. Mansurov
Keywords:  superhydrophobic soot, catalysts, hydrocarbons, synthesis.
Page:  774