Methane conversion with carbon dioxide in plasma-catalytic system

Methane conversion with carbon dioxide in plasma-catalytic system

Type	Journal Article
Author	K. Krawczyk
Author	M. Młotek
URL	http://www.sciencedirect.com/science/article/pii/S0016236113008119
Volume	117, Part A
Pages	608-617
Publication	Fuel
Date	January 30, 2014
Abstract	Describes the use of a hybrid plasma-catalytic system (HPCS) to convert methane with CO2 to higher hydrocarbons and alcohols. Researchers conducted the study at the pressure of 1.2 bar. A dielectric barrier discharge (DBD) reactor was powered at the frequency of about 6 kHz. Molar ratio [CO2]:[CH4] in the inlet gas mixtures (CH4 + CO2 + Ar) was 1. Their investigation was conducted for specific energy 1000–3500 kJ/mol CH4. They tested three packings: Fe/Al2O3, NaY and Na-ZSM-5. Ethane was the main component among the organic products. In the HPCS with Na-ZSM-5, in the first hour, researchers noted the formation of liquid products. In HPCS with Na-ZSM-5 catalyst the amount of hydrocarbons, containing more than 4 carbon atoms was the highest. The overall methane conversion in HPCS with Na-ZSM-5 was 47.5% and 65% and the methane conversion to C2–C4 hydrocarbons reached 19.5% and 14.5% for gas flow rate 2 and 1 Nl/h respectively. The highest share of hydrogen in H2 and C2–4 hydrocarbons was obtained in a homogeneous system.