FTIR study of the adsorption of ammonia and pyridine on V2O5/MgO catalysts

Akcay M., Yurdakoc M. K., Tonbul Y., Yurdakoc K., Honicke D.

SPECTROSCOPY LETTERS, cilt.31, sa.8, ss.1719-1732, 1998 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 31 Sayı: 8
  • Basım Tarihi: 1998
  • Doi Numarası: 10.1080/00387019808007448
  • Dergi Adı: SPECTROSCOPY LETTERS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1719-1732
  • Anahtar Kelimeler: V2O5/MgO catalysts, pyridine and ammonia adsorption, Bronsted and Lewis acid sites, FT-IR, MG-O CATALYSTS, SELECTIVE OXIDATIVE DEHYDROGENATION, SOLID ACID CATALYSTS, SURFACE-PROPERTIES, OXIDE, MECHANISM, ZEOLITES, VANADIA, PROPANE, BUTANE
  • Dokuz Eylül Üniversitesi Adresli: Hayır

Özet

The adsorption of ammonia and pyridine on the surface of the V2O5/MgO catalysts has been studied for the determination of the Bronsted and Lewis acid sites. The data showed that the catalysts have medium Lewis acidity, but are also weak Bronsted acids, having active hydroxy groups able to interact with pyridine by H-bonding and by protonation. Pyridine is a suitable basic probe for the quantification of the catalysts. 32% V2O5/MgO catalyst is the most acidic catalyst.