7th Annual International Conference on Materials Science and Engineering | |
Synergistic Effect of Ethylene Glycol and Active Surface Group of SBA-15 under Ultrasound to Improve Catalytic Properties of Pd/SBA-15 | |
Liu, Xuhui^1 ; Bai, Xuefeng^1^2 | |
Institute of Petrochemistry, Heilongjiang Academy of Sciences, Harbin | |
150040, China^1 | |
School of Chemistry and Material Science, Heilongjiang University, Harbin | |
150080, China^2 | |
关键词: Catalytic properties; Mesoporous material sba-15; Narrow size distributions; Palladium nanoparticles; Phenylboronic acids; Supported palladium catalysts; Suzuki coupling reaction; Ultrasonic methods; | |
Others : https://iopscience.iop.org/article/10.1088/1757-899X/562/1/012001/pdf DOI : 10.1088/1757-899X/562/1/012001 |
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来源: IOP | |
【 摘 要 】
Using ultrasonic methods in preparation of noble metal nanocatalysts is a hot spot in catalysis. In this paper, the synthesis of mesoporous material SBA-15 supported palladium catalyst Pd/SBA-15 was done by ultrasound assisted reduction and the synergistic effect between reductant and SBA-15 under ultrasound was discussed. The interaction of reductant ethylene glycol and active surface groups of SBA-15 under ultrasound led to the change in structure and surface properties of SBA-15, so that oxygen element in the structure of SBA-15 could chelate with palladium ions during impregnation, leading to the in-situ reduction of palladium nanoparticles(PdNPs) inside SBA-15. The obtained PdNPs in Pd/SBA-15 had a narrow size distribution and an average diameter of 2.98 nm. The yield of Suzuki coupling reaction between 4-bromotoluene and phenylboronic acid catalyzed by the prepared Pd/SBA-15 catalyst was 98.01%. And the results of recycle test proved the strong stability of Pd/SBA-15.
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Synergistic Effect of Ethylene Glycol and Active Surface Group of SBA-15 under Ultrasound to Improve Catalytic Properties of Pd/SBA-15 | 477KB | download |