TY - JOUR
T1 - A comparative study of Ni catalysts supported on Al2O3, MgO–CaO–Al2O3 and La2O3–Al2O3 for the dry reforming of ethane
AU - Tsiotsias, Anastasios I.
AU - Charisiou, Nikolaos D.
AU - Sebastian, Victor
AU - Gaber, Safa
AU - Hinder, Steven J.
AU - Baker, Mark A.
AU - Polychronopoulou, Kyriaki
AU - Goula, Maria A.
N1 - Funding Information:
MAG and NDC gratefully acknowledge that this research has been co-financed by the European Union and Greek national funds under the call “Greece – China Call for Proposals for Joint RT&D Projects” (Project code: T7DKI-00388 ). KP acknowledges the support from Khalifa University through the grant RC2-2018-024 .
Publisher Copyright:
© 2021 Hydrogen Energy Publications LLC
PY - 2022/1/26
Y1 - 2022/1/26
N2 - CO2 utilization through the activation of ethane, the second largest component of natural and shale gas, to produce syngas, has garnered significant attention in recent years. This work provides a comparative study of Ni catalysts supported on alumina, alumina modified with CaO and MgO, as well as alumina modified with La2O3 for the reaction of dry ethane reforming. The calcined, reduced and spent catalysts were characterized employing XRD, N2 physisorption, H2-TPR, CO2-TPD, TEM, XPS and TPO. The modification of the alumina support with alkaline earth oxides (MgO and CaO) and lanthanide oxides (La2O3), as promoters, is found to improve the dispersion of Ni, enhance the catalyst's basicity and metal-support interaction, as well as influence the nature of carbon deposition. The Ni catalyst supported on modified alumina with La2O3 exhibits a relatively stable syngas yield during 8 h of operation, while H2 and CO yields decrease substantially for Ni/Al2O3.
AB - CO2 utilization through the activation of ethane, the second largest component of natural and shale gas, to produce syngas, has garnered significant attention in recent years. This work provides a comparative study of Ni catalysts supported on alumina, alumina modified with CaO and MgO, as well as alumina modified with La2O3 for the reaction of dry ethane reforming. The calcined, reduced and spent catalysts were characterized employing XRD, N2 physisorption, H2-TPR, CO2-TPD, TEM, XPS and TPO. The modification of the alumina support with alkaline earth oxides (MgO and CaO) and lanthanide oxides (La2O3), as promoters, is found to improve the dispersion of Ni, enhance the catalyst's basicity and metal-support interaction, as well as influence the nature of carbon deposition. The Ni catalyst supported on modified alumina with La2O3 exhibits a relatively stable syngas yield during 8 h of operation, while H2 and CO yields decrease substantially for Ni/Al2O3.
KW - Basic/lanthanide promoters
KW - Carbon deposition
KW - CO utilization
KW - Dry ethane reforming
KW - Modified alumina
KW - Ni catalysts
UR - http://www.scopus.com/inward/record.url?scp=85121390491&partnerID=8YFLogxK
U2 - 10.1016/j.ijhydene.2021.11.194
DO - 10.1016/j.ijhydene.2021.11.194
M3 - Article
AN - SCOPUS:85121390491
SN - 0360-3199
VL - 47
SP - 5337
EP - 5353
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 8
ER -
