ORALS
SESSION:
CarbonTueAM-R7
| 6th Intl. Symp. on Sustainable Carbon and Biocoke and their Industrial Application |
| Tue. 28 Nov. 2023 / Room: Sunflower | |
| Session Chairs: David Scheiblehner; Gustav Hanke; Session Monitor: TBA |
12:00: [CarbonTueAM02] OS
PRODUCTION OF CARBON AND HYDROGEN BY METHANE PYROLYSIS: INFLUENCE OF DIFFERENT CATALYSTS ON PRODUCED CARBON David Scheiblehner1 ;
1Montanuniversität Leoben, Leoben, Austria;
Paper Id: 360
[Abstract] Hydrogen represents a pivotal element in transforming the current energy system as its application as a fuel or reducing agent in critical industrial sectors, including transportation and metallurgy, can enhance energy diversity and availability while offering the opportunity to reduce greenhouse gas emissions [1]. However, producing H2 using conventional methods is associated with the generation of high volumes of carbon dioxide [2]. Therefore, extensive research activities concentrate on developing alternative processes with decreased CO2 footprints.Methane pyrolysis in liquid metallic catalysts is an attractive process that shows excellent potential, as its specific energy demand is comparable to that of steam methane reforming, but no CO2 is emitted due to the base reaction [3], [4]. Furthermore, generated pyrolysis carbon is a valuable product with many possible applications [5].This work investigates the influence of different compositions of the utilized metal bath on produced pyrolysis carbon. The focus is on modulating its physical properties, especially with regard to marketability and impact on the overall process economics while sustaining sufficient hydrogen yield.
References:
[1] IEA. Global Hydrogen Review 2022, IEA: Paris, 2022
[2] Machhammer, O., Bode, A. and Hormuth, W. Financial and Ecological Evaluation of Hydrogen Production Processes on Large Scale. Chem. Eng. Technol. 2016, 39, 6, pp. 1185–1193. doi:10.1002/ceat.201600023
[3] Scheiblehner, D., Neuschitzer, D., Wibner, S., Sprung, A. and Antrekowitsch, H. Hydrogen production by methane pyrolysis in molten binary copper alloys. International Journal of Hydrogen Energy 2022. doi:10.1016/j.ijhydene.2022.08.115
[4] Scheiblehner, D., Antrekowitsch, H., Neuschitzer, D., Wibner, S. and Sprung, A. Hydrogen Production by Methane Pyrolysis in Molten Cu-Ni-Sn Alloys. Metals 2023, 13, 7, pp. 1310. doi:10.3390/met13071310
[5] R.A. Dagle, V. Dagle, M.D. Bearden, J.D. Holladay, T.R. Krause and S. Ahmed. An Overview of Natural Gas Conversion Technologies for Co-Production of Hydrogen and Value-Added Solid Carbon Products, 2017. doi:10.2172/1411934
