Journal
APPLIED SURFACE SCIENCE
Volume 495, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.apsusc.2019.143584
Keywords
Heterogeneous; 4-nitrophenol; Kinetics; Suzuki-Miyaura reaction
Categories
Funding
- National Natural Science Foundation of China [21473064]
- Analytical and Testing Center of Huazhong University of Science and Technology
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4-nitrophenol may accumulate in the food chain and cause various fatal diseases. Hence, in order to meet the principle of safety, health and environmental protection, achieving high conversion of 4-nitrophenol with efficient and cheaper method is always in demand. In this aspect, a series of five PdxCuy/Ph-Sa-1 (4:0, 3:1, 2:2, 1:3 and 0:4) catalysts were designed and characterized by FT-IR, TEM, SEM, TGA, AAS, XPS and so on. Furthermore, the catalytic performance of several PdxCuy/Ph-Sa-1 were investigated via 4-nitrophenol reduction and kinetics, wherein Pd2Cu2/Ph-Sa-1 showed higher catalytic activity than Pd/Ph-Sa-1 with the same Pd content. In particular, Pd/Ph-Sa-1 also exhibited excellent catalytic performance in Suzuki-Miyaura coupling reaction. Linking salen-1 monomer and benzene through Scholl reaction was presented as an effective route to obtain polymeric substrate with low-cost and simple synthesis method. In addition, Pd/Ph-Sa-1 showed desirable recyclability with maintaining its catalytic activity even after five recycles, we also studied the morphology and Pd state of Pd/Ph-Sa-1 after five recycles by TEM and XPS. This work is highly suggestive on the heterogeneous catalysts design and application.
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