O-Th-403-2 On the Role of Defect Sites in the Premature Deactivation of SSZ-13 Zeolite in the Methanol-to-Olefins Reaction

Thursday, June 18, 2015: 8:40 AM
403-405 (Lawrence Convention Center)
Xiaochun Zhu1, Brahim Mezari1, Javier Ruiz-Martinez2, Qingyun Qian2, Bert M. Weckhuysen2, Jan Philipp Hofmann1 and Emiel J.M. Hensen1, (1)Eindhoven University of Technology, Netherlands, (2)Utrecht University, Netherlands.
It is usually assumed that zeolite catalysts in the MTO reaction deactivate due to extensive coking by polynuclear aromatics formation. Here, we show for the first time that for SSZ-13 (CHA) zeolite the deactivation is caused by the formation of a polyolefinic oligomer from the product oligomers over silanol defects.

Extended Abstracts:

See more of: Catalyst Design II
See more of: Catalyst Design and Synthesis
<< Previous Abstract | Next Abstract >>