TY - JOUR
T1 - Optimization of a fluidized bed reactor for methane decomposition over Fe/Al2O3 catalysts: Activity and regeneration studies
AU - Qian, Jing Xia
AU - Enakonda, Linga
AU - Wang, Wen Ju
AU - Gary, Daniel
AU - Del-Gallo, Pascal
AU - Basset, Jean-Marie
AU - Liu, Da Bin
AU - Zhou, Lu
N1 - KAUST Repository Item: Exported on 2020-04-23
Acknowledged KAUST grant number(s): AE89891, AE89991
Acknowledgements: This work was supported by the grant from the Independent Research Project of Nanjing University of Science and Technology (AE89891, AE89991). Thanks to the Analysis and Testing Center of Nanjing University of Science and Technology. Thanks to the Chemicals Testing Center of Nanjing University of Science and Technology. Thanks to the analysis and testing center of King Abdullah University of Science and Technology. The work has been supported by Air Liquide company.
PY - 2019/11/7
Y1 - 2019/11/7
N2 - Catalytic methane decomposition was investigated over 40 wt% Fe/Al2O3 catalyst in fluidized bed reactor (FLBR). After optimization of FLBR conditions in terms of catalyst bulk density, particle size, minimum fluidization velocity, and the catalyst bed height, the catalyst activity and stability tests were conducted by comparison with a fixed bed reactor (FBR). Although a similar stable methane conversion was obtained over both reactors, the pressure drop during 35 min operation of FBR was 9 times higher than that of FLBR, which indicated the possibility of continuous operation of methane decomposition process over FLBR. Further, the influence of the space velocity, feed dilution and regeneration on catalysts reactivity was studied in FLBR to conclude that a reaction condition of 12 L/gcat∙h, feed of 20%H2–80%CH4 and CO2-regeneration of deactivated catalysts may be favourable for operating methane decomposition in FLBR continually and effectively to provide stable hydrogen.
AB - Catalytic methane decomposition was investigated over 40 wt% Fe/Al2O3 catalyst in fluidized bed reactor (FLBR). After optimization of FLBR conditions in terms of catalyst bulk density, particle size, minimum fluidization velocity, and the catalyst bed height, the catalyst activity and stability tests were conducted by comparison with a fixed bed reactor (FBR). Although a similar stable methane conversion was obtained over both reactors, the pressure drop during 35 min operation of FBR was 9 times higher than that of FLBR, which indicated the possibility of continuous operation of methane decomposition process over FLBR. Further, the influence of the space velocity, feed dilution and regeneration on catalysts reactivity was studied in FLBR to conclude that a reaction condition of 12 L/gcat∙h, feed of 20%H2–80%CH4 and CO2-regeneration of deactivated catalysts may be favourable for operating methane decomposition in FLBR continually and effectively to provide stable hydrogen.
UR - http://hdl.handle.net/10754/660075
UR - https://linkinghub.elsevier.com/retrieve/pii/S0360319919338194
UR - http://www.scopus.com/inward/record.url?scp=85075430592&partnerID=8YFLogxK
U2 - 10.1016/j.ijhydene.2019.10.058
DO - 10.1016/j.ijhydene.2019.10.058
M3 - Article
AN - SCOPUS:85075430592
VL - 44
SP - 31700
EP - 31711
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
SN - 0360-3199
IS - 60
ER -