Dispersed iron obtaining by the method of solid state hydride synthesis and the problem of hydrophobiсity of metal

Abstract

The process of obtaining of a dispersed product based on metallic iron, containing a protective carbosiloxane film on the surface, has been investigated and implemented. The structure and composition of the metal product are characterized by modern physical methods, including X-ray phase and X-ray fluorescence analysis, XPS spectroscopy. The influence of the synthesis mechanism, the role of the metal-silicon chemical interaction in the surface layer on the water-repellent and anticorrosion properties of the obtained samples is considered. It was found that the heat resistance of the samples in air and their hydrophobicity, depending on the type of the reduced metal, increase in the order: nickel -copper -iron. It was shown that highly hydrophobic iron-based samples can be obtained by reduction from iron (II) oxide and Olenegorsk superconcentrate. The prospects of the synthesized powders and the method of their preparation for the creation of superhydrophobic materials are shown. A method for obtaining a metal product has been theoretically and experimentally substantiated, where the formation of a metal structure and its protection from an aggressive environment are carried out within a given volume on the same technological unit with a flow-through reactor.

Features of obtaining surface-modified metals with minimal carbon footprint

“…Basically, the above series does not contradict the data on the chemical activity of the listed reducing agents in processing iron oxides below 477 °C, which were obtained from the results of gas chromatographic analysis of the reaction products [3,5,45]. An increase in nucleophilic properties in the above series means an increase in the ability of a substance to donate electrons.…”

“…T he greenhouse effect is a global ecologic threat in XXI century, caused by emission of millions tons of carbon dioxide, which is a post-product of many types of manufacturing, which are the basis of the modern economy [1][2][3]. Emissions of metallurgic enterprises are making up at least 8% of global CO 2 emission [1,[4][5]. Although, processes of extraction metals from ore, widely used in industrial scales, cause CO 2 detachment.…”