TY - JOUR
T1 - Nickel[sbnd]cobalt catalyst supported on TiO2-coated SiO2 spheres for CO2 methanation in a fluidized bed
AU - Jia, Chunmiao
AU - Dai, Yihu
AU - Yang, Yanhui
AU - Chew, Jia Wei
N1 - Publisher Copyright:
© 2019 Hydrogen Energy Publications LLC
PY - 2019/5/21
Y1 - 2019/5/21
N2 - Carbon dioxide (CO2)methanation, which is the reduction of carbon dioxide to methane by hydrogen generated from renewable energy, is a promising process for carbon recycling. Towards large-scale implementation, (i)fluidized beds, which have excellent heat transfer, are promising to perform the highly exothermic reaction; and (ii)catalysts suitable for long-term use in fluidized beds are needed. In this study, a novel Ni[sbnd]Co bimetal catalyst supported on TiO2-coated SiO2 spheres (NiCo/TiO2@SiO2)was rationally designed and evaluated for CO2 methanation in fluidized bed reactor. The results demonstrate that NiCo/TiO2@SiO2 exhibited high CO2 conversion with CH4 selectivity of greater than 95%. Moreover, the superior performance was sustained for more than 100 h in the fluidized bed reactor, affirming the long-term stability of the catalyst. Comprehensive characterizations were conducted to understand the relationship between structure and performance. This study is expected to be valuable for the potential implementation of the CO2 methanation process in fluidized beds.
AB - Carbon dioxide (CO2)methanation, which is the reduction of carbon dioxide to methane by hydrogen generated from renewable energy, is a promising process for carbon recycling. Towards large-scale implementation, (i)fluidized beds, which have excellent heat transfer, are promising to perform the highly exothermic reaction; and (ii)catalysts suitable for long-term use in fluidized beds are needed. In this study, a novel Ni[sbnd]Co bimetal catalyst supported on TiO2-coated SiO2 spheres (NiCo/TiO2@SiO2)was rationally designed and evaluated for CO2 methanation in fluidized bed reactor. The results demonstrate that NiCo/TiO2@SiO2 exhibited high CO2 conversion with CH4 selectivity of greater than 95%. Moreover, the superior performance was sustained for more than 100 h in the fluidized bed reactor, affirming the long-term stability of the catalyst. Comprehensive characterizations were conducted to understand the relationship between structure and performance. This study is expected to be valuable for the potential implementation of the CO2 methanation process in fluidized beds.
KW - Bimetal catalysts
KW - Carbon dioxide methanation
KW - Fluidized bed reactor
KW - Rational design
UR - http://www.scopus.com/inward/record.url?scp=85064606700&partnerID=8YFLogxK
U2 - 10.1016/j.ijhydene.2019.04.009
DO - 10.1016/j.ijhydene.2019.04.009
M3 - 文章
AN - SCOPUS:85064606700
SN - 0360-3199
VL - 44
SP - 13443
EP - 13455
JO - International Journal of Hydrogen Energy
JF - International Journal of Hydrogen Energy
IS - 26
ER -
