Tandem Dehydrogenation of Ammonia Borane and Hydrogenation of Nitro/Nitrile Compounds Catalyzed by Graphene-Supported NiPd Alloy Nanoparticles

GOKSU H., Ho S. F., Metin O., KORKMAZ K., Garcia A. M., GÜLTEKİN M. S., ...Daha Fazla

ACS CATALYSIS, cilt.4, sa.6, ss.1777-1782, 2014 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 4 Sayı: 6
  • Basım Tarihi: 2014
  • Doi Numarası: 10.1021/cs500167k
  • Dergi Adı: ACS CATALYSIS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1777-1782
  • Anahtar Kelimeler: alloy nanoparticles, tandem reaction, dehydrogenation, hydrogenation, nitro/nitrile compounds, primary amines, CHEMOSELECTIVE HYDROGENATION, HYDROLYTIC DEHYDROGENATION, CARBONYL-COMPOUNDS, FACILE REDUCTION, NITROARENES, NITRO, HYDROXYLAMINES, ACTIVATION, GENERATION, GLYCEROL
  • Atatürk Üniversitesi Adresli: Evet

Özet

We report a facile synthesis of monodisperse NiPd alloy nanoparticles (NPs) and their assembly on graphene (G) to catalyze the tandem dehydrogenation of ammonia borane (AB) and hydrogenation of R-NO2 and/or R-CN to R-NH2 in aqueous methanol solutions at room temperature. The 3.4 nm NiPd alloy NPs were prepared by coreduction of nickel(II) acetate and palladium(H) acetlyacetonate by borane-tert-butylamine in oleylamine and deposition on G via a solution phase self-assembly process. G-NiPd showed composition-dependent catalysis on the tandem reaction with G-Ni30Pd70 being the most active. A variety of R-NO2 and/or R-CN derivatives were reduced selectively into R-NH2 via G-Ni30Pd70 catalyzed tandem reaction in 5-30 mm reaction time with the conversion yields reaching up to 100%. Our study demonstrates a new approach to G-NiPd-catalyzed dehydrogenation of AB and hydrogenation of R-NO2 and R-CN. The G-NiPd NP catalyst is efficient and reusable, and the reaction can be performed in an environment-friendly process with short reaction times and high yields.