Oleylamine-Stabilized Copper(0) Nanoparticles: An Efficient and Low-Cost Catalyst for the Dehydrogenation of Dimethylamine Borane

DUMAN S., ÖZKAR S.

CHEMCATCHEM, cilt.9, sa.13, ss.2588-2598, 2017 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 9 Sayı: 13
  • Basım Tarihi: 2017
  • Doi Numarası: 10.1002/cctc.201700367
  • Dergi Adı: CHEMCATCHEM
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.2588-2598
  • Anahtar Kelimeler: copper, dehydrogenation, dimethylamine borane, nanocatalysis, nanoparticles, METAL-ORGANIC FRAMEWORK, BORON-NITROGEN BONDS, AMMONIA-BORANE, RUTHENIUM(III) ACETYLACETONATE, HYDROLYTIC DEHYDROGENATION, HETEROGENEOUS CATALYSIS, REUSABLE NANOCATALYST, HOMOGENEOUS CATALYST, HYDROGEN-PRODUCTION, ALCOHOL OXIDATION
  • Orta Doğu Teknik Üniversitesi Adresli: Evet

Özet

Copper(0) nanoparticles, in situ generated from the reduction of copper(II) 2-ethylhexanoate during the dehydrogenation of dimethylamine borane (DMAB) at 50.0 +/- 0.1 degrees C in toluene solution, are active catalysts in hydrogen generation from DMAB, but not very stable against agglomeration. Addition of 5.0 equivalents of oleylamine (OAm) was found to stabilize copper(0) nanoparticles noticeably, while maintaining high catalytic activity. Oleylamine-stabilized copper(0) nanoparticles could be isolated from the solution and characterized by XRD, TEM, UV/Vis, attenuated total reflectance (ATR)-FTIR, and B-11 NMR spectroscopies. Our report also includes (i) comparative catalytic activities of copper(0) nanoparticles in the absence and presence of OAm depending on the initial [OAm]/[Cu] ratio, catalyst concentration, substrate concentration, and temperature, (ii) the catalytic lifetime of copper(0) nanoparticles in the absence and presence of OAm in the dehydrogenation of DMAB at 50.0 +/- 0.1 degrees C, (iii) testing the ease of isolation and reusability of copper(0) nanoparticles in the absence and presence of OAm in the dehydrogenation of DMAB, (iv) the results of quantitative kinetic poisoning experiments by using 1,10-phenanthroline, showing that copper(0) nanoparticles are kinetically competent catalysts in the dehydrogenation of DMAB.