TY - JOUR
T1 - Catalytic Ethylene Oligomerization over Ni-Loaded X-AlSBA-15 (X = Gd, Y, La, and Sm) Catalysts
AU - Khani, Yasin
AU - Cho, Kanghee
AU - Jeong, Kwang Eun
AU - Kim, Chul Ung
AU - Park, Young Kwon
N1 - Publisher Copyright:
© The Author(s), under exclusive licence to Korean Institute of Chemical Engineers, Seoul, Korea 2025.
PY - 2025/8
Y1 - 2025/8
N2 - This study evaluated the performance of Ni-X-AlSBA-15 (X = Y, Sm, Gd, and La) catalysts in the ethylene oligomerization processes. The effects of Y, Sm, Gd, and La promoters on the ethylene oligomerization process were examined. The Ni-X-AlSBA-15 (X = Y, Sm, Gd, and La) catalysts demonstrated a considerably enhanced catalytic activity and selectivity compared with that of Ni-AlSBA-15. In particular, the Ni-Gd-AlSBA-15 catalyst achieved the highest conversion of ethylene to butene (50.0 wt.%) after 12 h of time on stream. These enhancements were attributed to the improved dispersion of active sites, the presence of oxygen vacancies, and the optimized densities of the acid and Ni sites, which collectively enhanced the rate of adsorption of ethylene molecules. An increase in the selectivity of butylene (≥ 80%) confirmed that the gadolinium as a promoter had a positive effect on the catalytic activity. Overall, the Gd promoter, coupled with the remarkable benefits of AlSBA-15 in Ni-based catalysts, is promising for butene generation through ethylene oligomerization.
AB - This study evaluated the performance of Ni-X-AlSBA-15 (X = Y, Sm, Gd, and La) catalysts in the ethylene oligomerization processes. The effects of Y, Sm, Gd, and La promoters on the ethylene oligomerization process were examined. The Ni-X-AlSBA-15 (X = Y, Sm, Gd, and La) catalysts demonstrated a considerably enhanced catalytic activity and selectivity compared with that of Ni-AlSBA-15. In particular, the Ni-Gd-AlSBA-15 catalyst achieved the highest conversion of ethylene to butene (50.0 wt.%) after 12 h of time on stream. These enhancements were attributed to the improved dispersion of active sites, the presence of oxygen vacancies, and the optimized densities of the acid and Ni sites, which collectively enhanced the rate of adsorption of ethylene molecules. An increase in the selectivity of butylene (≥ 80%) confirmed that the gadolinium as a promoter had a positive effect on the catalytic activity. Overall, the Gd promoter, coupled with the remarkable benefits of AlSBA-15 in Ni-based catalysts, is promising for butene generation through ethylene oligomerization.
KW - AlMCM-41
KW - AlSBA-15
KW - Heterogeneous catalysis
KW - Oligomerization of ethylene
KW - Promoter
UR - https://www.scopus.com/pages/publications/105001657341
U2 - 10.1007/s11814-025-00449-6
DO - 10.1007/s11814-025-00449-6
M3 - Article
AN - SCOPUS:105001657341
SN - 0256-1115
VL - 42
SP - 2333
EP - 2343
JO - Korean Journal of Chemical Engineering
JF - Korean Journal of Chemical Engineering
IS - 10
ER -