To the Question of the Diamond Nuclei’s Formation from the Gas Phase

Abstract

One can’t think that the formation of polymorphic carbon forms (diamond, graphite, charbon) having different chemical nature of carbon-carbon bonds is a simple physical crystallization of carbon atoms. Undoubtedly in this case chemical factors have a decisive importance and the above-mentioned polymorphic forms of carbon are products in different chemical reactions. As it has been shown in [1,2] they are condensing products which form in polycondesation processes of the type

$$ nA\mathop \rightleftharpoons \limits_K \left\{ {{A_n}} \right\}_{ads}^K \to \left\{ {{A_n} - mL} \right\}_{ads}^K + mL $$

(1)

where A represents a carbon-containing molecule, that is a polycondansation monomer; {A _n } ^κ _ads - a polymeric condensing product adsorbed on the catalyst; n — the degree of the molecular condensing; {A _n - mL{ ^κ _ads - remaining on the catalyst solid condensing products with C-C-bonds of one or other crystalline modification of carbon or of different polymeric forms of one; L - light molecules removing during the polycondensation process.