期刊
CHEMISTRY-A EUROPEAN JOURNAL
卷 26, 期 21, 页码 4874-4879出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/chem.202000741
关键词
hydrogenation; nanostructures; palladium; metal-support interactions; supported catalysts
资金
- National Natural Science Foundation of China [21802008, 21503023]
- Postgraduate Research & Practice Innovation Program of Jiangsu Province
- Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University
A catalyst in which Pd nanoparticles are supported on triangle-shaped La2O2CO3 nanosheets exposing predominantly the (001) planes (Pd/La2O2CO3-TNS; where TNS denotes triangular nanosheets) was prepared by a facile solvothermal method. The Pd/La2O2CO3-TNS catalysts exhibited excellent catalytic activity and recycling stability for hydrogenation of cinnamaldehyde to hydrocinnamaldehyde with turnover frequency of up to 41 238 h(-1). This enhanced activity of Pd/La2O2CO3-TNS results from strong metal-support interactions. Structure analysis and characterization demonstrated that surface-oxygen-enriched La2O2CO3-TNS supports exposing (001) planes are beneficial to charge transfer between the Pd nanoparticles and triangle-shaped La2O2CO3 nanosheets and increase the electron density of Pd. Moreover, the modulated electronic states of the Pd/La2O2CO3-TNS catalysts can enhance the adsorption and activation of hydrogen to enhance the hydrogenation activity.
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