Probing the Transformation of Boron Nitride Catalysts under Oxidative Dehydrogenation Conditions

Elasticity of cubic boron nitride under ambient conditions

Jin S. Zhang, Jay D. Bass, Takashi Taniguchi, Alexander F. Goncharov, Yun-Yuan Chang, and Steven D. Jacobsen Department of Geology, University of Illinois at Urbana-Champaign, Urbana, Illinois 61801, USA National Institute for Materials Science, 1-1 Namiki, Tsukuba, Ibaraki 305-0044, Japan Geophysical Laboratory, Carnegie Institution of Washington, Washington D.C. 20015, USA Department of Earth...

Role of ceria in oxidative dehydrogenation on supported vanadia catalysts.

The effect of the suppport on oxidative dehydrogenation activity for vanadia/ceria systems is examined for the oxidation of methanol to formaldehyde by use of well-defined VO(x)/CeO(2)(111) model catalysts. Temperature-programmed desorption at low vanadia loadings revealed reactivity at much lower temperature (370 K) as compared to pure ceria and vanadia on inert supports such as silica. Densit...

Oxidative Unzipping and Transformation of High Aspect Ratio Boron Nitride Nanotubes into “White Graphene Oxide” Platelets

Morphological and chemical transformations in boron nitride nanotubes under high temperature atmospheric conditions is probed in this study. We report atmospheric oxygen induced cleavage of boron nitride nanotubes at temperatures exceeding 750 °C for the first time. Unzipping is then followed by coalescence of these densely clustered multiple uncurled ribbons to form stacks of 2D sheets. FTIR a...

Dehydrogenation by Heterogeneous Catalysts

Transformation-induced plasticity and cascading structural changes in hexagonal boron nitride under high pressure and shear