Fe/HZSM-5 synergizes with biomass pyrolysis carbon to reform CH4-CO2 to syngas in microwave field

CO2 reforming of CH4 to syngas, an important chemical raw material, has received wide-spread attention. However, the use of noble metal catalysts and high energy consumption limit their application. In this study, microwave-assisted dry reforming over mixtures of Fe/HZSM-5 and biomass pyrolysis carbon (BPC) was studied. Additionally, the influence of different reaction conditions and catalysts on the reforming efficiency was examined. Our results demonstrated that microwave heating improved the dry reforming process while reducing the cost of catalysts used. At a microwave power of 700 W, and the space velocity of 2.4 L/(h & BULL;g), CO2 and CH4 conversion reached 91.27% and 63.03%, respectively. In addition, Fe/HZSM-5 showed synergistic effects with BPC, and the migration of active metals was responsible for the synergistic effects. The microwave reforming effect was better than that of conventional heating reforming, and the unique effects of microwave fields facili-tated the conversion process. This study makes a useful contribution to the improvement of new dry reforming methods.(c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

Automated summary

In this study, microwave-assisted dry reforming over mixtures of Fe/HZSM-5 and biomass pyrolysis carbon (BPC) was studied. The results showed that microwave heating improved the dry reforming process, reducing the cost of catalysts. Fe/HZSM-5 exhibited synergistic effects with BPC, and microwave reforming was more effective than conventional heating reforming.