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Mesoporous Ni-Cu/WOx/ZrO2 Catalyst with Highly Dispersed WOx Clusters: Efficient Catalysts for Selective Hydroisomerization of Isobutane to n-Butane
被引:3
|作者:
Wang, Hefang
[1
]
Jiang, Hui
[1
]
Duan, Yaoyao
[1
]
Li, Xiaobao
[1
]
Sun, Peidong
[1
]
Zhang, Huixin
[1
]
机构:
[1] Hebei Univ Technol, Sch Chem Engn & Technol, Tianjin 300130, Peoples R China
关键词:
ONE-POT SYNTHESIS;
ACTIVE-SITES;
OXIDATIVE DEHYDROGENATION;
HYDROGEN SPILLOVER;
SULFATED ZIRCONIA;
SOLID-SOLUTIONS;
MIXED OXIDES;
ISOMERIZATION;
TUNGSTEN;
ZRO2;
D O I:
10.1021/acs.iecr.1c02398
中图分类号:
TQ [化学工业];
学科分类号:
0817 ;
摘要:
A series of mesoporous Ni-Cu/WO3/ZrO2 (1Ni1Cu/mWZr) was successfully prepared with F127 as a template and used as catalysts for isobutane hydroisomerization to n-butane. The effects of the F127/ZrO2 molar ratio on the structure were investigated, and the results of characterization indicate that 1Ni1Cu/mWZr-13 has a high surface area (S-BET = 86.96 m(2).g(-1)). Using 1Ni1Cu/mWZr-13 calcined at 750 degrees C as a catalyst, the isobutane conversion and selectivity to n-butane were 80.74 and 62.66%, respectively, under optimal conditions. According to the characterization and catalytic activity results, the tungsten oxide of 1Ni1Cu/mWZr-13 calcined at 750 degrees C with a W surface density of 7.73 atom/nm(2) was mainly formed by WOx clusters, and WOx clusters with strong Bronsted acidity are catalytic active sites for skeletal rearrangement of hydroisomerization. The high activity of 1Ni1Cu/ mWZr-13 calcined at 750 degrees C is attributed to the proper surface acidity sites (696.34 mu mol.g(-1)) and Bronsted/Lewis ratio (0.35) of 1Ni1Cu/mWZr-13.
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页码:17439 / 17449
页数:11
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