Structure Determination of Boron-Based Oxidative Dehydrogenation Heterogeneous Catalysts with Ultra-High Field 35.2 T ¹¹B Solid-State NMR Spectroscopy.

ABSTRACT: Boron-based heterogenous catalysts, such as hexagonal boron nitride (h-BN) as well as supported boron oxides, are highly selective catalysts for the oxidative dehydrogenation (ODH) of light alkanes to olefins. Previous catalytic measurements and molecular characterization of boron-based catalysts by ¹¹B solid-state NMR spectroscopy and other techniques suggests that oxidized/hydrolyzed boron clusters are the catalytically active sites for ODH. However, ¹¹B solid-state NMR spectroscopy often suffers from limited resolution because boron-11 is an I = 3/2 half-integer quadrupolar nucleus. Here, ultra-high magnetic field (B ₀ = 35.2 T) is used to enhance the resolution of ¹¹B solid-state NMR spectra and unambiguously determine th

SUBMITTER: Dorn RW 

PROVIDER: S-EPMC8372215 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature