Influence of Operating Parameters, Al 2 O 3 and Ni/Al 2 O 3 Catalysts on Plasma-Assisted CO 2 Reforming of CH 4 in a Par
- PDF / 1,660,903 Bytes
- 19 Pages / 439.37 x 666.142 pts Page_size
- 103 Downloads / 250 Views
Influence of Operating Parameters, Al2O3 and Ni/Al2O3 Catalysts on Plasma‑Assisted CO2 Reforming of CH4 in a Parallel Plate Dielectric Barrier Discharge for High H2/CO Ratio Syngas Production Thitiporn Suttikul1,2,3 · Sasikarn Nuchdang4 · Dussadee Rattanaphra4 · Chantaraporn Phalakornkule3,5 Received: 15 April 2020 / Accepted: 28 July 2020 © Springer Science+Business Media, LLC, part of Springer Nature 2020
Abstract H4 in a parallel plate This work aimed to investigate plasma-assisted C O2 reforming of C dielectric barrier discharge (DBD) system for production of high H2/CO ratio syngas. The effects were studied of operating parameters (discharge frequency and applied voltage), Al2O3 and Ni/Al2O3 catalysts on the CH4 dry reforming performance in terms of reactant conversion, coke, product selectivity, energy consumption, and energy efficiency. In order to improve H 2/CO ratio of the produced syngas, a high CH4/CO2 feed molar ratio of 4/1 was tested for the dry reforming of C H4. As compared to a DBD-alone system, a combined Al2O3 catalyst-DBD system operating at an applied voltage of 11 kV, a discharge 2 and CO selectivfrequency of 750 Hz and an A l2O3 packing of 6.4 g gave an improved H ity of 79% and 28%, respectively, with a fraction of syngas of 0.97 and a relatively high H2/ CO ratio of 2.4. An application of 5 wt% Ni/Al2O3 catalyst in the DBD further improved the H2 selectivity to 84% and the CO selectivity to 47%. In addition, the syngas fraction increased to 0.98 with an H 2/CO ratio of 1.5, while the amount of coke decreased from 4.7 to 3.7 wt%. Keywords Dielectric barrier discharge · Syngas · Alumina catalyst · Ni alumina catalyst
* Chantaraporn Phalakornkule [email protected]; [email protected] 1
Division of Chemical Process Engineering Technology, Faculty of Engineering and Technology, King Mongkut’s University of Technology North Bangkok, Rayong Campus, Rayong 21120, Thailand
2
The Plasma and Automatic Electric Technology Research Group, King Mongkut’s University of Technology North Bangkok, Rayong Campus, Rayong 21120, Thailand
3
Research Center for Circular Products and Energy, King Mongkut’s University of Technology North Bangkok, Bangkok 10800, Thailand
4
Research and Development Division, Thailand Institute of Nuclear Technology (Public Organization), Pathum Thani 12120, Thailand
5
Department of Chemical Engineering, King Mongkut’s University of Technology North Bangkok, Bangkok 10800, Thailand
13
Vol.:(0123456789)
Plasma Chemistry and Plasma Processing
Introduction Global warming and climate change have become a serious problem as they severely affect all living organisms and the environment. Many researchers have attempted to solve problems caused by climate change by reducing or utilizing greenhouse gas effluent. Carbon dioxide (CO2) and methane (CH4) which are a main component of greenhouse gases can be used as reactants to form various useful chemicals and environmentally friendly sources of energy, e.g. alkanes, alkenes, hy
Data Loading...
