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Dorn RW, Mark LO, Hung I, Cendejas MC, Xu Y, Gor'kov PL, Mao W, Ibrahim F, Gan Z, Hermans I, Rossini AJ. An Atomistic Picture of Boron Oxide Catalysts for Oxidative Dehydrogenation Revealed by Ultrahigh Field 11B- 17O Solid-State NMR Spectroscopy. J Am Chem Soc 2022; 144:18766-18771. [PMID: 36214757 DOI: 10.1021/jacs.2c08237] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Boron oxide/hydroxide supported on oxidized activated carbon (B/OAC) was shown to be an inexpensive catalyst for the oxidative dehydrogenation (ODH) of propane that offers activity and selectivity comparable to boron nitride. Here, we obtain an atomistic picture of the boron oxide/hydroxide layer in B/OAC by using 35.2 T 11B and 17O solid-state NMR experiments. NMR spectra measured at 35.2 T resolve the boron and oxygen sites due to narrowing of the central-transition powder patterns. A 35.2 T 2D 11B{17O} dipolar heteronuclear correlation NMR spectrum revealed the structural connectivity between boron and oxygen atoms. The approach outlined here should be generally applicable to determine atomistic structures of heterogeneous catalysts containing quadrupolar nuclei.
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Affiliation(s)
- Rick W Dorn
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States.,U.S. Department of Energy, Ames National Laboratory, Ames, Iowa 50011, United States
| | - Lesli O Mark
- University of Wisconsin - Madison, Department of Chemistry, Madison, Wisconsin 53706, United States
| | - Ivan Hung
- National High Magnetic Field Laboratory (NHMFL), Tallahassee, Florida 32310, United States
| | - Melissa C Cendejas
- University of Wisconsin - Madison, Department of Chemistry, Madison, Wisconsin 53706, United States
| | - Yijue Xu
- National High Magnetic Field Laboratory (NHMFL), Tallahassee, Florida 32310, United States
| | - Peter L Gor'kov
- National High Magnetic Field Laboratory (NHMFL), Tallahassee, Florida 32310, United States
| | - Wenping Mao
- National High Magnetic Field Laboratory (NHMFL), Tallahassee, Florida 32310, United States
| | - Faysal Ibrahim
- University of Wisconsin - Madison, Department of Chemistry, Madison, Wisconsin 53706, United States
| | - Zhehong Gan
- National High Magnetic Field Laboratory (NHMFL), Tallahassee, Florida 32310, United States
| | - Ive Hermans
- University of Wisconsin - Madison, Department of Chemistry, Madison, Wisconsin 53706, United States.,University of Wisconsin - Madison, Department of Chemical and Biological Engineering, Madison, Wisconsin 53706, United States
| | - Aaron J Rossini
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, United States.,U.S. Department of Energy, Ames National Laboratory, Ames, Iowa 50011, United States
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