TY - JOUR
T1 - Facilitating CO2 dissociation via Fe doping on supported vanadium oxides for intensified oxidative dehydrogenation of propane
AU - Zhang, Shihui
AU - Zhou, Chang an
AU - Wang, Shenghong
AU - Qin, Zhifeng
AU - Shu, Guoqiang
AU - Wang, Chao
AU - Song, Lei
AU - Zheng, Lirong
AU - Wei, Xiaoyang
AU - Ma, Kui
AU - Yue, Hairong
N1 - Publisher Copyright:
© 2023 Elsevier B.V.
PY - 2024/2/1
Y1 - 2024/2/1
N2 - Selective oxidative dehydrogenation of propane with CO2 (CO2-ODP) represents a promising pathway of propylene production and CO2 utilization. Presently, vanadium (V) based catalysts are commonly used due to the excellent redox ability originated from the multivalent V. However, the CO2-ODP reaction mechanism remains elusive, limiting the rational design of highly efficient catalytic systems. Herein, we introduced Fe into impregnated V-Al2O3 to build a dual-sites catalyst including Fe and V, achieving a C3H8 conversion at ∼43 % and C3H6 selectivity exceed 80 %. Via regulating the Fe/V molar ratio, we clearly describe that the formation of unique Fe-O-V facilitated the CO2 dissociation. Intrinsically, V is the main active site contributing for C3H8 dehydrogenation while Fe site is responsible for the CO2 dissociation, replenishing lattice oxygen to enhance oxidative dehydrogenation of C3H8. The design of dual-sites catalyst and extraction of molecular understanding provide guidance for the rational development of highly active CO2-ODP catalysts.
AB - Selective oxidative dehydrogenation of propane with CO2 (CO2-ODP) represents a promising pathway of propylene production and CO2 utilization. Presently, vanadium (V) based catalysts are commonly used due to the excellent redox ability originated from the multivalent V. However, the CO2-ODP reaction mechanism remains elusive, limiting the rational design of highly efficient catalytic systems. Herein, we introduced Fe into impregnated V-Al2O3 to build a dual-sites catalyst including Fe and V, achieving a C3H8 conversion at ∼43 % and C3H6 selectivity exceed 80 %. Via regulating the Fe/V molar ratio, we clearly describe that the formation of unique Fe-O-V facilitated the CO2 dissociation. Intrinsically, V is the main active site contributing for C3H8 dehydrogenation while Fe site is responsible for the CO2 dissociation, replenishing lattice oxygen to enhance oxidative dehydrogenation of C3H8. The design of dual-sites catalyst and extraction of molecular understanding provide guidance for the rational development of highly active CO2-ODP catalysts.
KW - CO activation
KW - Fe doping
KW - Lattice oxygen
KW - Propane dehydrogenation
KW - Selective oxidation
UR - http://www.scopus.com/inward/record.url?scp=85181126509&partnerID=8YFLogxK
U2 - 10.1016/j.cej.2023.148231
DO - 10.1016/j.cej.2023.148231
M3 - Article
AN - SCOPUS:85181126509
SN - 1385-8947
VL - 481
JO - Chemical Engineering Journal
JF - Chemical Engineering Journal
M1 - 148231
ER -