TY - JOUR
T1 - Synergetic modulation of bifunctional Ni-loaded micro-mesoporous HZSM-5/MCM-41 for catalytic cracking of n-butane
AU - Wu, Qin
AU - Li, Jiaqi
AU - Jia, Shujun
AU - Zhang, Yaoyuan
AU - Shi, Daxin
AU - Chen, Kangcheng
AU - Li, Hansheng
N1 - Publisher Copyright:
© 2025 Elsevier Ltd
PY - 2025/8/1
Y1 - 2025/8/1
N2 - Butane, mainly derived from catalytic cracking in petroleum processing, has a low chemical utilization. Catalytic cracking of butane can improve the efficiency of butane utilization by producing ethylene and propylene. Herein, the bifunctional Ni-loaded HZSM-5/MCM-41 catalysts, which had dehydrogenation-cracking synergism and micro-mesoporous structure, were synthesized by the alkaline treatment of HZSM-5 and incipient wetness impregnation method. The structural and chemical characteristics of the Ni-HZSM-5/MCM-41 were systematically investigated. The catalytic performance of n-butane cracking was evaluated. The synergistic modulation of acid property regulation, micro-mesoporous regulation, and the introduction of Ni enhanced the performance of n-butane cracking. Compared with pure HZSM-5, the Ni-HZSM-5/MCM-41 had appropriate surface acid strength and acidic site distribution. The micro-mesoporous composite structure enhanced the resistance to carbon accumulation, the activation and dehydrogenation performance of alkanes with low temperatures, and the selectivity of light olefins. A reaction pathway was put forward for the catalytic cracking of n-butane on Ni-HZSM-5/MCM-41.
AB - Butane, mainly derived from catalytic cracking in petroleum processing, has a low chemical utilization. Catalytic cracking of butane can improve the efficiency of butane utilization by producing ethylene and propylene. Herein, the bifunctional Ni-loaded HZSM-5/MCM-41 catalysts, which had dehydrogenation-cracking synergism and micro-mesoporous structure, were synthesized by the alkaline treatment of HZSM-5 and incipient wetness impregnation method. The structural and chemical characteristics of the Ni-HZSM-5/MCM-41 were systematically investigated. The catalytic performance of n-butane cracking was evaluated. The synergistic modulation of acid property regulation, micro-mesoporous regulation, and the introduction of Ni enhanced the performance of n-butane cracking. Compared with pure HZSM-5, the Ni-HZSM-5/MCM-41 had appropriate surface acid strength and acidic site distribution. The micro-mesoporous composite structure enhanced the resistance to carbon accumulation, the activation and dehydrogenation performance of alkanes with low temperatures, and the selectivity of light olefins. A reaction pathway was put forward for the catalytic cracking of n-butane on Ni-HZSM-5/MCM-41.
KW - Alkane catalytic cracking
KW - HZSM-5
KW - Metal modification
KW - Micro-mesoporous molecular sieves
KW - n-Butane
UR - http://www.scopus.com/inward/record.url?scp=105004406394&partnerID=8YFLogxK
U2 - 10.1016/j.ces.2025.121796
DO - 10.1016/j.ces.2025.121796
M3 - Article
AN - SCOPUS:105004406394
SN - 0009-2509
VL - 314
JO - Chemical Engineering Science
JF - Chemical Engineering Science
M1 - 121796
ER -