Journal
CHEMICAL ENGINEERING AND PROCESSING-PROCESS INTENSIFICATION
Volume 145, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cep.2019.107662
Keywords
Reforming; Microwave; Activated carbon; Catalytic effect
Categories
Funding
- National Natural Science Foundation of China [51576118]
- China Postdoctoral Science Foundation [2019M652432]
- Foundation of Shandong Key Lab of Energy Carbon Reduction and Resource Utilization, Shandong University [ECRRU201803]
- Open Research Fund of Science and Technology Innovation Platform of Key Laboratory of Efficient & Clean Energy Utilization, Changsha University of Science Technology [2018NGQ009]
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The effect of activated carbon as catalyst on methane dry reforming is investigated in this work. Gases conversions in CH4 decomposition, carbon gasification and CH4 dry reforming are also compared. It is compared wood-derived activated carbon exhibits better catalytic effect on methane reforming. The results indicate CH4 conversion in the reforming reaction is higher than that in the decomposition reaction, with a maximum difference of 37.9%. CO2 conversion in the reforming reaction is lower than that in carbon gasification reaction by 18.4%. Various variables are employed to determine the optimum conditions for reforming reaction. The results reveal the enhanced conversions of CH4 and CO2, accompanied by a decreased H-2/CO ratio can be achieved through increasing microwave power, reducing CH4/CO2 ratio or decreasing gas flow rate. Furthermore, migration amount of carbon is calculated. It is obtained carbon migration rate reduces with the increase of microwave power or decrease of CH4/CO2 ratio. At last, catalytic activity of wood-derived activated carbon is tested. It is noticed the catalyst presents high catalytic activity at the beginning, followed by a sharp loss of catalytic activity after 40 min. This caused the decrease of CH4 and CO2 conversions nearly by 56.6% and 36.6% after the test, respectively.
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