3 years ago

Synthesis and application of waste egg shell derived CaO supported W-Mo mixed oxide catalysts for FAME production from waste cooking oil: Effect of stoichiometry

Synthesis and application of waste egg shell derived CaO supported W-Mo mixed oxide catalysts for FAME production from waste cooking oil: Effect of stoichiometry
The solid bifunctional tungsten molybdenum supported calcium mixed oxide catalyst (Wx-Moy/CaO 0.3x, 0.7y) was synthesized by simple wet impregnation method. The prepared catalyst has successfully transesterified waste cooking oil to biodiesel in a single step reaction process, owing to its acid-base bifunctional capacity. Presence of acid and basic sites of the catalyst was believed to promote the catalytic activity for the transesterification reaction of high FFA waste cooking oil. The stoichiometric effect of transition bimetallic oxide loading on acid-base properties, surface area and porosity of the catalyst were studied. The catalytic activity of the catalyst for transesterification reaction increases with the increase in the W molar weight ratio over Mo from 0.3 to 0.7. The W0.6-Mo0.4/CaO catalyst recorded the highest biodiesel yield of 96.2% under reaction conditions of 15:1 methanol to oil molar ratio, 70°C reaction temperature, 2wt% catalyst loading and 2h reaction time. The newly synthesized catalysts were characterised by X-ray diffraction (XRD), BET surface area, vapour pressure scanning electron microscope (VP-SEM), temperature programmed desorption of CO2 and NH3 and thermal gravimetric analysis (TGA).

Publisher URL: www.sciencedirect.com/science

DOI: S019689041730794X

You might also like
Never Miss Important Research

Researcher is an app designed by academics, for academics. Create a personalised feed in two minutes.
Choose from over 15,000 academics journals covering ten research areas then let Researcher deliver you papers tailored to your interests each day.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.