Online Diagnosis of the Conversion of Methane to C2 Hydrocarbons under Glow Discharge Plasma at Atmospheric Pressure
WANG Da-wang1,2, XU Yong1, ZHANG Jia-liang2, MA Teng-cai2
1. School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China 2. School of Physics and Optoelectronic Technology, Dalian University of Technology, Dalian 116024, China
Abstract：Optical emission spectroscopy (OES) was adopted for the first time by our group for in situ diagnosis of the conversion of CH4-H2 under glow discharge plasma at atmospheric pressure with rotary electrodes. The emission of excited species such as excited radicals and atoms (C, CH, C2, H and H2) was detected in the spectra range of 300-700 nm. The spectrum of hydrogen atom was used to figure out the plasma excitation temperature by a Boltzmann plot scheme. It was evaluated that the excitation temperature of hydrogen plasmas under varied discharge conditions is in the range of 6 300-6 600 K. The electron density was calculated based on spectral profile of H lines and its order is about 1020 m-3.
王达望1, 2，徐 勇1，张家良2，马腾才2 . 常压辉光等离子体催化CH4转化制C2烃在线诊断研究 [J]. 光谱学与光谱分析, 2010, 30(10): 2812-2815.
WANG Da-wang1,2, XU Yong1, ZHANG Jia-liang2, MA Teng-cai2 . Online Diagnosis of the Conversion of Methane to C2 Hydrocarbons under Glow Discharge Plasma at Atmospheric Pressure . SPECTROSCOPY AND SPECTRAL ANALYSIS, 2010, 30(10): 2812-2815.
