396489 Dealkylation and Disproportionation of Long Chain Alkylaromatics over Immobilized Ionic Liquid Catalysts

Monday, November 17, 2014: 5:04 PM
M105 (Marriott Marquis Atlanta)
Thomas F. Degnan1, Martin Gorbaty1, Wolfgang F. Hölderich2 and Alice Petre2, (1)ExxonMobil Research and Engineering Company, Annandale, NJ, (2)Chemical Technology and Heterogeneous Catalysis, RWTH Aachen University, Aachen, Germany

Long chain alkylaromatics, such as n-dodecylbenzene,  are important starting points for the production of surfactants  and form the basis for the production of many biodegradeable detergents.   It this presentation we use n-dodecylbenzene disproportionation as a probe for acid activity and selectivity in ionic liquid catalyzed dealkylation and disporportionation of long chain alkylaromatics.  The ionic liquid catalysts used in this study comprise ionic liquid – functionalized high surface area silica materials including MCM-41.  The study showed that AlCl3-based ionic liquids supported on silicas and MCM-41 are active catalytic materials for alkylbenzene (DDB) transformation (mainly disproportionation and dealkylation) at low reaction temperatures.  We also concluded that the catalytic dealkylation of n-dodecylbenzene requires a high density of very strong acid sites.

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See more of this Session: In Honor of the Lewis Award Winner Arvind Varma: (Invited Talks)
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