Transfer hydrogenation of nitrobenzene to aniline in water using Pd nanoparticles immobilized on amine-functionalized UiO-66
| Autor: | Yu-Ri Lee, Sung-Hyeon Baeck, Wha-Seung Ahn, Chinna Krishna Prasad Neeli, Pillaiyar Puthiaraj, Young-Min Chung |
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| Rok vydání: | 2018 |
| Předmět: |
Reaction mechanism
010405 organic chemistry Chemistry Formic acid Inorganic chemistry chemistry.chemical_element General Chemistry 010402 general chemistry Transfer hydrogenation 01 natural sciences Catalysis 0104 chemical sciences Nitrobenzene chemistry.chemical_compound Aniline Selectivity Palladium |
| Zdroj: | Catalysis Today. 303:227-234 |
| ISSN: | 0920-5861 |
| DOI: | 10.1016/j.cattod.2017.09.002 |
| Popis: | Pd nanoparticles with a mean diameter of 2.2 nm on amine-functionalized UiO-66 were synthesized by facile anionic-exchange followed by chemical reduction. The prepared Pd/NH2-UiO-66 catalyst was effective in the catalytic transfer hydrogenation of nitrobenzene to aniline using formic acid as a hydrogen source under mild reaction conditions in water with a maximum nitrobenzene conversion of 98% and an aniline selectivity of 99%. The superior catalytic activity of Pd/NH2-UiO-66 was attributed to the cooperative effects of nano-sized Pd and its stabilization offered by the NH2-UiO-66 support. The heterogeneous nature of the catalytic system was confirmed by a hot-filtering test and the catalyst maintained stable performance in 4 repeated cycles. A plausible reaction mechanism was proposed. |
| Databáze: | OpenAIRE |
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