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J Am Chem Soc. 2018 Jul 11;140(27):8535-8543. doi: 10.1021/jacs.8b04059. Epub 2018 Jun 29.

Pushing the Limits on Metal-Organic Frameworks as a Catalyst Support: NU-1000 Supported Tungsten Catalysts for o-Xylene Isomerization and Disproportionation.

Journal of the American Chemical Society

Sol Ahn, Scott L Nauert, Cassandra T Buru, Martino Rimoldi, Hyeju Choi, Neil M Schweitzer, Joseph T Hupp, Omar K Farha, Justin M Notestein

Affiliations

  1. Department of Chemistry, Faculty of Science , King Abdulaziz University , Jeddah 21589 , Saudi Arabia.

PMID: 29909621 DOI: 10.1021/jacs.8b04059

Abstract

Acid-catalyzed skeletal C-C bond isomerizations are important benchmark reactions for the petrochemical industries. Among those, o-xylene isomerization/disproportionation is a probe reaction for strong Brønsted acid catalysis, and it is also sensitive to the local acid site density and pore topology. Here, we report on the use of phosphotungstic acid (PTA) encapsulated within NU-1000, a Zr-based metal-organic framework (MOF), as a catalyst for o-xylene isomerization at 523 K. Extended X-ray absorption fine structure (EXAFS),

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