The Role of Acidic Catalyst Support On the Catalytic Upgrading of Bio-Oils

Fuels and Petrochemicals Division
2011 AIChE Annual Meeting
AIChE Annual Meeting
October 18, 2011 - 8:00pm

Catalytic conversion of bio-oil vapor has attracted considerable interest as a promising pathway for upgrading. In this work, the reaction of anisole and guaiacol, phenolic model compounds commonly existing in bio-oils, were studied over an acidic silica-alumina catalyst and at varying space times (W/F) and time-on-streams. The reactions were carried out in gaseous phase fixed bed reactor under hydrogen at atmospheric pressure and 300 oC. It is found that transalkylation is the predominating pathway, while insignificant deoxygenation activity was detected under the investigated reaction conditions. Deactivation of the catalysts is rapid and more severe in the case of guaiacol feed. As a result, conversion of anisole is generally higher as compared to that of guaiacol. It is suggested that the strong adsorption of the phenolic compounds is responsible for the catalyst deactivation. In this contribution, Density Functional Theory (DFT) calculation was performed to simulate the adsorption of the phenolic compounds on acid sites. Based on this present calculation, it exhibited the adsorption energy of guaiacol is significantly higher than that of anisole. This trend is consistent well with the experimental observation.

Professional Development Hours
0.5 PDHs
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.
Presenter(s): 

Would you like to access this content?

No problem. You just have to complete the following steps.

You have completed 0 of 2 steps.

  1. Log in

    You must be logged in to view this content. Log in now.

  2. Purchase Technical Presentation

    You must purchase this technical presentation using one of the options below.
    If you already purchased this content recently, please click here to refresh the system's record of ownerships.

Pricing

Credits 0.5 Use credits
List Price $25.00 Buy now
AIChE Members $15.00 Buy now
AIChE Undergraduate Student Members Free Free access
AIChE Graduate Student Members Free Free access
Related Topics: 
Skill Level: