Performance of birnessite-type manganese oxide in the thermal-catalytic degradation of polyamide 6

EREN E., GÜNEY M., EREN B., GÜMÜŞ H.

Journal of Thermal Analysis and Calorimetry, cilt.115, sa.1, ss.567-572, 2014 (SCI-Expanded) identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 115 Sayı: 1
  • Basım Tarihi: 2014
  • Doi Numarası: 10.1007/s10973-013-3232-y
  • Dergi Adı: Journal of Thermal Analysis and Calorimetry
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.567-572
  • Anahtar Kelimeler: Birnessite, Catalytic degradation, Keywords:: Surface acidity, MnO2, Polyamide 6
  • Bilecik Şeyh Edebali Üniversitesi Adresli: Evet

Özet

Birnessite-type manganese oxide (BMO) was prepared by oxidation of Mn(NO3)2 with H2O2 in KOH solution. The nature and the extent of degradation of polyamide 6 (PA6) in the presence of samples were analysed by thermogravimetric analysis under static air atmosphere at several heating rates between 5 and 30 C min-1. The surface and structure of BMO were characterized using infrared (IR) spectroscopy, X-ray diffraction, and thermal analysis techniques. The acid sites of BMO were investigated by IR using pyridine as a molecular probe. The activation energy for degradation estimated by Kissinger method for PA6 and BMO/PA6 system containing 10 mass% of BMO was found to be 212 and 144 kJ mol-1 under air, respectively. The catalytic activity observed in BMP catalyst was associated to a high lattice oxygen mobility. © 2013 Akadémiai Kiadó, Budapest, Hungary.