Effect of Metallic Dopants for ZnO Support on Catalytic Activity for Depolymerization of Lignin


  • ชินดนัย ยงยุทธวิชัย
  • ปรินทร์ พึงประเสริฐ
  • นวดล เหล่าศิริพจน์
  • อภิรัตน์ เลาห์บุตรี


impregnation; catalytic activity; lignin; depolymerization


Alkaline lignin was depolymerized with ferrite and nickle catalysts on ZnO support. The catalysts were prepared by microwave assisted impregnation method. The catalysts were characterized by X-ray diffraction spectrometer and BET (Brunauer–Emmett–Teller) surface area analyzer to confirm the structure. The amount of phenolic compounds was identified by gas chromatograph equipped with flame ionization detector (GC-FID). Main products of the reaction contain gluacal, ethylgluacal, and phenol. Fourier transform-infrared spectroscopy (FT-IR) was used to study the functional group of initial alkaline lignin and lignin residues after the reaction. It was found that at 300ºC with heating rate 10ºC/min for 1 h with alkaline lignin/solvent ratio of 1.75% (w/v), Fe-Ni bimetallic catalyst on ZnO nanoparticle support showed the highest phenolic compound yield of 2.75 wt.%.





งานวิจัย (Research papers)