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- Title
Influence of bicomponent Pd based catalysts on anthracene hydrogenation reaction.
- Authors
Bai, Lijun; Wang, Mingyi; Liu, Niudun; Jia, Peng; Wang, Junwen; Wu, Ailian
- Abstract
In order to prepare efficient lightweight fuel, using anthracene as a model compound instead of polycyclic aromatic hydrocarbons. The focus of this study was to elucidate the synergy of M (M = Zr, La, Au) in Pd/γ-Al2O3 catalyst towards the hydrogenation of anthracene. It was revealed that the M addition as a second promoter positively influenced catalyst performance. In the paper, the selectivity of Pd-based catalysts for hydrogenation products depends on temperature. It was believed that the active metal Pd adsorbs anthracene molecules and catalyzes the transfer of diatomic hydrogen, while the carrier promotes the transfer of monatomic hydrogen. Moreover, the metallic Pd0 species on PdZr/Al2O3 and PdAu/Al2O3 supports were found to be more electron-rich than those on Pd/Al2O3, which increases the adsorption capacity of hydrogen atoms. The Pd0 species on the catalyst were more electron deficient under the action of La, which inhibits the detachment of intermediate products on the active metal, thereby improving the selectivity of perhydroanthracene (The selectivity of perhydroanthracene is 89% at a temperature of 275 °C).
- Subjects
ANTHRACENE; POLYCYCLIC aromatic compounds; POLYCYCLIC aromatic hydrocarbons; HYDROGENATION; CATALYST selectivity; DIATOMIC molecules; HYDROGEN atom
- Publication
Research on Chemical Intermediates, 2024, Vol 50, Issue 4, p1603
- ISSN
0922-6168
- Publication type
Article
- DOI
10.1007/s11164-023-05226-w