Effect of metal oxide nanoparticles on the evolution of valuable gaseous products during pyrolysis of Turkish low-rank coal

Bilge S., DONAR Y. O., SINAĞ A.

JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS, ss.242-247, 2018 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Basım Tarihi: 2018
  • Doi Numarası: 10.1016/j.jaap.2018.09.019
  • Dergi Adı: JOURNAL OF ANALYTICAL AND APPLIED PYROLYSIS
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.242-247
  • Anahtar Kelimeler: Low-rank coal, Catalytic pyrolysis, Turkish lignite, TiO2, ZnO, Nanocatalyst, CATALYTIC PYROLYSIS, COMBUSTION CHARACTERISTICS, TEMPERATURE, LIGNITE, GASIFICATION, ZEOLITE, STEAM, GAS
  • Ankara Üniversitesi Adresli: Evet

Özet

In this study, TiO2 and ZnO nanoparticles were synthesized via solvothermal method and used as a catalyst for low-rank coal (LRC) pyrolysis to improve the gaseous product quality and yield. Effects of nanocatalysts on the yields of pyrolysis products distribution were discussed in details. Different reaction temperatures (400-700 degrees C) and catalyst to LRC ratios (1, 5, and 15% w/w) were examined. The optimum catalyst to LRC ratio was found as %1 by weight, while optimum pyrolysis temperature was determined as 700 degrees C. The gaseous products (hydrogen, methane, carbon dioxide, carbon monoxide and C2-C4 hydrocarbons) were characterized by micro gas chromatography (mu GC) to understand the catalytic ability of TiO2 and ZnO nanoparticles while the pyrolytic oil (tar) was characterized by gas chromatography-mass spectroscopy (GC-MS) as well as Fourier-transform infrared spectroscopy (FT-IR). Through the thermogravimetric analysis method (TGA) weight loss was obtained in the samples. H-ZSM-5 as well-known pyrolysis catalysts was also used for the comparison purposes. The results showed that gaseous product yields were increased drastically in the presence of nano TiO2 and nano ZnO.