Patent ID: 8475761
Filing Date: 2013-07-02
Classification: B01J,B82Y,C01B,Y10S

Abstract:
1. A method for producing carbon nanocoils, comprising following steps: (a) providing a metal substrate made from iron-containing metal or an alloy thereof; (b) forming a tin precursor on the surface of the metal substrate, wherein the tin precursor is selected from the group consisting of tin nanoparticle, SnCl (c) heating the substrate and the precursor to a predetermined temperature performed under an oxygen-containing atmosphere at a temperature of 400-900° C. to form iron-tin oxides as a catalyst on the metal substrate; (d) placing the metal substrate with the catalyst thereon into a reaction furnace; and (e) introducing carbon-based gas and protective gas into the reaction furnace to grow carbon nanocoils on the surface of the catalyst.