We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Preparation of Bimetallic Cu<sub>x</sub>Ag<sub>y</sub> Nanoparticles and their Catalytic Performance in Hydrogenation of 4-Nitrophenol with H<sub>2</sub> to 4-Aminophenol.
- Authors
Wang, Aili; Yu, Dejian; Yin, Hengbo; Yuan, Wei
- Abstract
Bimetallic CuxAgy (x, y = 1‒9) nanoparticles were successfully prepared by a successive precipitation and reduction method using copper nitrate and silver nitrate as metal precursors, sodium hydroxide as a precipitant, and hydrazine hydrate as a reductant at 30 °C. In the bimetallic CuxAgy nanoparticles, Ag nanoparticles well anchored at the surfaces of Cu nanoparticles. There exists an interaction between metallic Ag and Cu components through the electron transfer from Ag nanoparticle to Cu nanoparticle, which effectively improves the catalytic activities of the bimetallic CuxAgy nanoparticles in the hydrogenation of 4-nitrophenol with gaseous hydrogen to 4-aminophenol. When the bimetallic Cu7Ag3 nanoparticles catalyzed the hydrogenation reaction at 90‒150 °C, the experimental data could be well fitted by a powder type reaction kinetic model. The simulated activation energy, Ea, is 40.8 kJ·mol‒1, which reveals that the catalytic hydrogenation of 4-nitrophenol with gaseous hydrogen to 4-aminophenol on the bimetallic Cu7Ag3 nanoparticle catalyst can be conducted under a mild reaction condition.
- Subjects
CATALYTIC hydrogenation; PRECIPITATION (Chemistry); SILVER nanoparticles; SILVER nitrate; TRANSFER hydrogenation; ACTIVATION energy; NANOPARTICLES
- Publication
Catalysis Letters, 2022, Vol 152, Issue 12, p3691
- ISSN
1011-372X
- Publication type
Article
- DOI
10.1007/s10562-022-03946-z