Hits:

Indexed by:期刊论文

Date of Publication:2015-11-01

Journal:2nd China-USA Symposium on Energy

Included Journals:SCIE、CPCI-S、Scopus

Volume:256

Issue:P1

Page Number:96-101

ISSN No.:0920-5861

Key Words:Plasma; Ni catalyst; Methane reforming; Syngas

Abstract:To seek an efficient route for syngas production from oxidative CO2 reforming of methane (OCRM) via post-plasma catalytic technique, three routes were compared using spark-shade plasma (input power = 106W, with Fl of 1.36 SLM at CH4:O-2: CO2 = 1:0.6:0.7) and Ni/CeO2/Al2O3 catalyst (catalyst temperature = 800 degrees C, with or without F2 of 0.52 SLM CH4). Compared with Route 1 (plasma only, Fl only), X-O2, XaL8 CH2+CO and H-2/CO ratio of Route 2 (plasma + catalyst, F1 only) increased to 100%, 99%, 76% and 1.2, respectively; but X-CO2 kept at about 35%, which was close to the thermodynamic-equilibrium values. In Route 3 (plasma + catalyst, F1 + F2), X-co2 increased dramatically to 67%, CH2+CO and H-2/CO ratio further increased to 86% and 1.5, respectively, though X-CO, decreased to 77%. Both S-CO and S-H2 arrived at nearly 100%. Assuming that the plasma could supply the heat energy for the subsequent catalytic reaction at 800 degrees C, syngas energy cost as low as 0.5 eV/molecule and energy efficiency as high as 91% were achieved. (C) 2015 Elsevier B.V. All rights reserved.