Factors influencing CH4-CO2 reforming reaction over Fe catalyst supported on foam ceramics under microwave irradiation

In this work, a CH4-CO2 reforming reaction was carried out under microwave irradiation using Fe/(SiC.SiO2) and Fe/(Al2O3.SiC) catalysts. The temperature-change behavior of the catalysts and the effects of microwave power, catalyst carriers, active component content, and space velocity on the dry reforming reaction were investigated. The Fe/(SiC.SiO2) catalyst reached the steady temperature quickly, while the heating process of Fe/(A1(2)O(3).-SiC) involves three stages with a small heating rate and it took longer to reach the steady temperature. The performance of Fe/(SiC.SiO2) was obviously better than that of Fe/ (Al2O3.SiC). And it was observed that about 95% conversions of reactants were achieved with Fe content of 12 wt%, space velocity of 200 h(-1), and microwave power of 90 W/g. Thus, Fe-based catalysts supported on foam ceramics exhibit good performance in the microwave CH4-CO2 reforming reaction. (C) 2018 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.