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- Title
A Novel Strategy for the Preparation of Supported Pd as an Efficient Catalyst for the Hydrogenation of Nitrobenzene in Mild Conditions.
- Authors
Hu, Zhi; Cheng, Yiyi; Wu, Meng; Duan, Ying; Yang, Yanliang; Lu, Tianliang
- Abstract
An advanced strategy was developed for the synthesis of molecular sieve-supported Pd catalysts. In this method, reductant containing C=C was in-situ prepared and pre-dispersed in the pore of the zeolites. The C=C group in the reductant can reduce the Pd2+ to Pd0 efficiently, leading to the formation of small and uniform Pd nanoparticles (~2 nm). The physical and chemical properties of the catalyst were characterized by XRD, TEM, XPS (ICP-OES), N2 isothermal adsorption-desorption, and H2-TPR. These catalysts showed high catalytic performance for the hydrogenation of nitrobenzene to aniline. All the TOFs for 1.5 Pd/Y, 1.5 Pd/ZSM-5, and 1.5 Pd/MOR with 1.5 wt% Pd loading are higher than 1000 h−1 at 30 °C and 0.1 MPa H2. Meanwhile, kinetic analysis for 2.0 Pd/Y was carried out, and an apparent activation energy of 28.88 kJ mol−1 was obtained, which is lower than most of the reported values in the literature. Furthermore, these catalysts were stable and recyclable.
- Subjects
NITROBENZENE; CHEMICAL properties; CATALYTIC hydrogenation; ACTIVATION energy; CATALYSTS; ALUMINOPHOSPHATES
- Publication
Catalysts (2073-4344), 2023, Vol 13, Issue 11, p1438
- ISSN
2073-4344
- Publication type
Article
- DOI
10.3390/catal13111438