Selective Hydrogenation of Adiponitrile to 6-Aminocapronitrile over Ni/α-Al2O3 Catalysts Doped with K2O and La2O3
Abstract
:1. Introduction
2. Results and Discussion
2.1. Catalyst Characterization
2.1.1. Structural and Textural Properties
2.1.2. H2-TPR
2.1.3. XRD
2.1.4. FE-TEM
2.1.5. H2-Chemisorption and H2-TPD
2.2. Catalyst Performance
2.2.1. Effects of Promoters
2.2.2. Catalyst Deactivation and Regeneration
3. Experimental Work
3.1. Catalyst Preparation
3.2. Catalyst Characterization
3.3. Activity Test
4. Conclusions
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Catalyst | SBET /m2/g | Vp /cm3/g | Dp /nm | Chemisorbed H2 /μmol/g.cat |
---|---|---|---|---|
NA | 14.0 | 0.054 | 15.6 | 9.4 |
NKA | 10.9 | 0.063 | 17.3 | 12.9 |
NKLA | 18.9 | 0.077 | 17.0 | 53.4 |
The Fresh Catalyst | The Deactivated Catalyst | ||||
---|---|---|---|---|---|
Element | Weight/% | Atom Ratio/% | Element | Weight Ratio/% | Atom Content/% |
C K | / | / | C K | 11.15 | 19.44 |
N K | / | / | N K | 1.00 | 1.50 |
O K | 39.49 | 58.82 | O K | 37.28 | 48.82 |
Al K | 35.88 | 31.68 | Al K | 30.01 | 23.30 |
K K | 0.02 | 0.01 | K K | 0.18 | 0.10 |
Ni K | 22.47 | 9.12 | Ni K | 18.32 | 6.54 |
La L | 2.13 | 0.37 | La L | 2.06 | 0.31 |
Total | 100.00 | Total | 100.00 |
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Zhao, L.; Wang, C.; Chen, J.; Nie, Z.; Zhang, J.; Lu, X. Selective Hydrogenation of Adiponitrile to 6-Aminocapronitrile over Ni/α-Al2O3 Catalysts Doped with K2O and La2O3. Catalysts 2023, 13, 934. https://doi.org/10.3390/catal13060934
Zhao L, Wang C, Chen J, Nie Z, Zhang J, Lu X. Selective Hydrogenation of Adiponitrile to 6-Aminocapronitrile over Ni/α-Al2O3 Catalysts Doped with K2O and La2O3. Catalysts. 2023; 13(6):934. https://doi.org/10.3390/catal13060934
Chicago/Turabian StyleZhao, Lei, Caiyun Wang, Jixiang Chen, Ziyang Nie, Jiyan Zhang, and Xuebin Lu. 2023. "Selective Hydrogenation of Adiponitrile to 6-Aminocapronitrile over Ni/α-Al2O3 Catalysts Doped with K2O and La2O3" Catalysts 13, no. 6: 934. https://doi.org/10.3390/catal13060934