Evaluation of Ascorbic Acid and Acetic Acid As Catalysts in the Transesterfication of Virgin Soybean Oil

You will be able to download and print a certificate for these PDH credits once the content has been viewed. If you have already viewed this content, please click here to login.

Biologically derived acids such as ascorbic acid and acetic acid may be used to catalyze the production of biodiesel in a supercritical fluid solvent.  The use of binary mixtures of supercritical carbon dioxide and methanol with the aid of an acid catalyst can facilitate the transesterfication reaction.  This may hold a potential advantage over non-catalytic supercritical methanol production of biodiesel due to methanol’s higher critical temperature than that of the critical temperature of binary mixtures of carbon dioxide and methanol.  The production of biodiesel using a ascorbic acid and acetic acid as a catalyst was evaluated in an agitated 500 mL Hastelloy C276 batch reactor.  Comparison experiments between sub-critical methanol , supercritical methanol , and supercritical methanol with a carbon dioxide cosolvent were performed between 175 °C and 250 °C.  Hold time was varied between 20 and 40 minutes and the methanol and soybean concentrations were varied.  The effect of temperature and concentration upon conversion will be discussed as well as a comparison between catalysts and use of binary mixtures of supercritical carbon dioxide.

Presenter(s): 

Checkout

Checkout

Do you already own this?

Log In for instructions on accessing this content.

AIChE MEMBERS

AIChE Member Credits 0.5
AIChE Members $15.00
AIChE Fuels and Petrochemicals Division Members Free
AIChE Undergraduate Student Members Free
AIChE Graduate Student Members Free
Non-Members** $25.00
  • Type:
    Conference Presentation
  • Duration:
    15 minutes
  • Skill Level:
    Intermediate
  • PDHs:
    0.50

Share This Post: