Poster (EARTH)

[PE1-050] Electrophoretic deposition of Ni/SiC for catalytic cracking of methane

○jin won lee¹, young jun lee¹, hayk hacob nersisyan², jong hyeon lee¹ (1. Chungnam National University(Department of Material Science & Engineering), 2. Rapidly Solidified Materials Research Center)

Keywords:Electrophoretic deposition, Silicon carbide, methane cracking

This study has been conducted for the electrophoretic deposition of Ni/SiC on Ni foam for catalytic cracking of methane at different pH conditions of electrolyte. A well-dispersed suspension containing β-SiC nanoparticles in the watts bath (NiSO₄: 240g/l, NiCl₂: 45g/l, H₃BO₃: 30g/l) was prepared for electrochemical characteristics analysis. According to the cyclic voltammetry and the zeta potential measurements, the electrodeposition of metallic nickel from electrolyte containing Ni²⁺ was occurred at a potential of < -0.42 V (vs. Ag/AgCl reference electrode). Surprisingly, an increase in electrolyte conductivity was detected with an increase in SiC concentration. It was shown that the electrical conductivity and the deposition rate of SiC nanoparticles tend to decrease with increasing of electrolyte pH. The efficiency of the as prepared Ni/SiC catalyst for the methane gas cracking was tested in the quartz pipe in the 25-300 ^oC temperature range