Probing the Transformation of Boron Nitride Catalysts under Oxidative Dehydrogenation Conditions Love, Alyssa Thomas, Brijith Specht, Sarah Hanrahan, Michael Venegas, Juan Burt, Samuel Grant, Joseph Cendejas, Melissa McDermott, William Rossini, Aaron Hermans, Ive
dc.contributor.department Ames National Laboratory
dc.contributor.department Chemistry 2019-08-15T04:01:21.000 2020-06-30T01:16:35Z 2020-06-30T01:16:35Z Mon Jan 01 00:00:00 UTC 2018 2019-12-07 2018-12-07
dc.description.abstract <p>Hexagonal boron nitride (h-BN) and boron nitride nanotubes (BNNTs) were recently reported as highly selective catalysts for the oxidative dehydrogenation (ODH) of alkanes to olefins in the gas phase. Previous studies revealed a substantial increase in surface oxygen content after exposure to ODH conditions (heating to ca. 500 °C under a flow of alkane and oxygen); however, the complexity of these materials has thus far precluded an in-depth understanding of the oxygenated surface species. In this contribution, we combine advanced NMR spectroscopy experiments with scanning electron microscopy (SEM) and soft X-ray absorption spectroscopy (XAS) to characterize the molecular structure of the oxygen functionalized phase that arises on h-BN and BNNTs following catalytic testing for ODH of propane. The pristine BN materials are readily oxidized and hydrolyzed under ODH reaction conditions to yield a phase consisting of three coordinate boron sites with variable numbers of hydroxyl and bridging oxide groups which is denoted B(OH)xO3-x (where x = 0-3). Evidence for this robust oxide phase revises previous literature hypotheses of hydroxylated BN edges as the active component on h-BN.</p>
dc.description.comments <p>This document is the Accepted Manuscript version of a Published Work that appeared in final form in <em>Journal of the American Chemical Society</em>, copyright © American Chemical Society after peer review and technical editing by the publisher. To access the final edited and published work see DOI: <a href="" target="_blank">10.1021/jacs.8b08165</a>. Posted with permission.</p>
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dc.identifier archive/
dc.identifier.articleid 2101
dc.identifier.contextkey 13474874
dc.identifier.s3bucket isulib-bepress-aws-west
dc.identifier.submissionpath chem_pubs/1097
dc.language.iso en
dc.source.bitstream archive/|||Fri Jan 14 18:31:56 UTC 2022
dc.subject.disciplines Materials Chemistry
dc.title Probing the Transformation of Boron Nitride Catalysts under Oxidative Dehydrogenation Conditions
dc.type article
dc.type.genre article
dspace.entity.type Publication
relation.isOrgUnitOfPublication 25913818-6714-4be5-89a6-f70c8facdf7e
relation.isOrgUnitOfPublication 42864f6e-7a3d-4be3-8b5a-0ae3c3830a11
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