Optimizing propylene selectivity and stability over Pt-Sn/MgAl2O4 catalysts for propane dehydrogenation

被引：0
|
作者：
Zhang, Haiyuan [1 ]
Feng, Fushan [1 ]
Meng, Fanfang [2 ]
Wang, Guangjian [1 ]
Bing, Liancheng [1 ]
Zhang, Qinqin [3 ]
Wang, Fang [1 ]
Fu, Haitao [4 ]
Han, Dezhi [1 ]
机构：
[1] Qingdao Univ Sci & Technol, Coll Chem Engn, State Key Lab Base Ecochem Engn, Qingdao 266042, Peoples R China
[2] PetroChina, Petrochem Res Inst, Beijing 102206, Peoples R China
[3] Qingdao Univ Sci & Technol, Coll Marine Sci & Biol Engn, Shandong Prov Key Lab Biochem Engn, Qingdao 266042, Peoples R China
[4] Northeastern Univ, Sch Met, Shenyang 110819, Peoples R China
来源：
JOURNAL OF POROUS MATERIALS | 2024年 / 31卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Propane dehydrogenation; Incipient wetness impregnation; MgAl2O4; Pt-Sn catalysts; Propylene; SUPPORTED PT-SN; NONOXIDATIVE DEHYDROGENATION; PTSN/GAMMA-AL2O3; CATALYSTS; PT-SN/SIO2; CATALYST; ENHANCED STABILITY; LIGHT ALKANES; PERFORMANCE; METAL; SIZE; PT-SN/AL2O3;
D O I：
10.1007/s10934-024-01578-9
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Propylene is an essential chemical feedstock, which needs efficient and stable production technology to meet its increasing industrial demand. In this work, the Pt-Sn/MgAl2O4 catalysts fabricated via the incipient wetness impregnation method were used for propane dehydrogenation to propylene (PDH). The effect of Sn on reaction performance was investigated to determine the optimal loading amount. The characterization results from XRD, N-2 physisorption, TEM, H-2-TPR, NH3-TPD, and TGA elucidated the physicochemical characteristic evolution with varied Sn content in the catalysts. The Pt0.3Sn/MgAl2O4 achieved the best propane conversion of 40.9% and propylene selectivity of 82.5% at 600 degrees C. Sn addition promoted Pt dispersion, enhanced metal-support interactions, and inhibited the side reactions. The MgAl2O4 support could suppress the coke formation and maintain propylene selectivity. This work demonstrates the Pt-Sn/MgAl2O4 catalysts are effective and durable for PDH to meet propylene demand.
引用
收藏
页码：1257 / 1267
页数：11
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