A5003783735- Catalytic Processes in Materials Science
- Catalysis and Oxidation Reactions
- Mesoporous Materials and Catalysis
- Zeolite Catalysis and Synthesis
- Oxidative Organic Chemistry Reactions
- Traditional and Medicinal Uses of Annonaceae
- Bioactive Compounds and Antitumor Agents
- Transition Metal Oxide Nanomaterials
- Nuclear reactor physics and engineering
- Silicon Carbide Semiconductor Technologies
- Coal Combustion and Slurry Processing
- Mining and Gasification Technologies
- Advanced battery technologies research
- Cyclone Separators and Fluid Dynamics
- Molecular Sensors and Ion Detection
- Chemical Synthesis and Reactions
- Axial and Atropisomeric Chirality Synthesis
- Groundwater flow and contamination studies
- Electrochemical sensors and biosensors
- Model Reduction and Neural Networks
- Electrocatalysts for Energy Conversion
- Advanced Photocatalysis Techniques
- Thermal Expansion and Ionic Conductivity
- Hydrocarbon exploration and reservoir analysis
- Advanced Battery Materials and Technologies
Dow Chemical (United States)
2020-2023
University of Wisconsin–Madison
2016-2020
Madison Group (United States)
2017
Worcester Polytechnic Institute
2016
University of Worcester
2016
Pontificia Universidad Católica de Chile
2009-2010
Boron nitride catalysis Propene is one of the highest-volume organic chemicals produced. has mainly been made from naphtha, but changes in global supply chain are creating shortages. Direct conversion propane, a component natural gas, via reaction with oxygen an attractive alternative, existing approaches produce large fraction unwanted CO and 2 . Grant et al. report that boron nitride, normally unreactive material, high selectivity to catalyze production propene (77%) ethene (13%). Science...
Hexagonal boron nitride (h-BN) and nanotubes (BNNT) were recently reported as highly selective catalysts for the oxidative dehydrogenation (ODH) of alkanes to olefins in gas phase. Previous studies revealed a substantial increase surface oxygen content after exposure ODH conditions (heating ca. 500 °C under flow alkane oxygen); however, complexity these materials has thus far precluded an in-depth understanding oxygenated species. In this contribution, we combine advanced NMR spectroscopy...
Abstract Boron nitride was recently identified as a highly selective catalyst for the oxidative dehydrogenation of propane. In this communication, we report that other boron‐containing materials such boron carbide, titanium boride, nickel cobalt hafnium and tungsten well elemental itself, show same exceptional behavior nitride. X‐ray photoelectron infrared spectroscopy suggest oxyfunctionalization surface. This observation disproves previous mechanistic hypotheses edge sites on would be...
Light olefins such as ethylene and propylene form the foundation of modern chemical industry, with yearly production volumes well into hundreds millions metric tons. Currently, these light are mainly produced via energy-intensive steam cracking. Alternatively, oxidative dehydrogenation (ODH) alkanes to produce allows for lower operation temperatures extended catalyst lifetimes, potentially leading valuable process efficiencies. The potential benefits this route have led significant research...
Boron-containing materials, and in particular boron nitride, have recently been identified as highly selective catalysts for the oxidative dehydrogenation of alkanes such propane. To date, no mechanism exists that can explain both unprecedented selectivity, observed surface oxyfunctionalization, peculiar kinetic features this reaction. We combine catalytic activity measurements with quantum chemical calculations to put forward a bold new hypothesis. argue remarkable product distribution be...
Abstract Hexagonal boron nitride (hBN) is presented as an outstanding catalyst for the selective production of C 4 olefins by oxidative dehydrogenation n ‐butane and isobutane. Unlike catalysts reported previously, hBN limits amount undesired CO x instead forms 2 3 main side products. Kinetic experiments suggest a mechanism in which rates isobutane consumption are dependent on O adsorption. spectroscopic insights used to formulate mechanistic hypotheses formation mechanisms –C olefins.
In this contribution, we investigate the effect of various reactor parameters on oxidative dehydrogenation (ODH) propane using a hexagonal boron nitride (hBN) heterogeneous catalyst. The analysis begins with an assessment influence mass and heat transport observed ODH activity. Unexpected experimental results during prompted us to use SiC as inert catalyst diluent, found increase in conversion increasing diluent content reactor. Control experiments suggested that itself is catalytically...
Ordinary differential equations (ODEs) are extremely important in modeling dynamic systems, such as chemical reaction networks. However, many challenges exist for building ODEs to describe systems accurately, which often requires careful experimentation and domain expertise. Recent advances solving so-called inverse kinetic problems have focused on the use of new data-driven methods that account physical structure governing equations, including physics-informed neural networks (PINNs),...
Abstract The front cover artwork for Issue 19/2017 is provided by the Hermans Laboratory at UW‐Madison (USA). image shows Swedish Chef who, being offered scientific freedom to explore new recipes, discovered that boron most efficient catalyst oxidative upgrading of natural gas‐derived alkanes highly‐desired olefins. It a good reminder community despite decades systematic research on ODH, serendipitous breakthroughs are still possible and can lead insights applications. See Communication...
In recent years, hexagonal boron nitride (hBN) has emerged as an unexpected catalyst for the oxidative dehydrogenation of alkanes. Here, versatility hBN was extended to alkane cracking chemistry by investigating production ethylene and propylene from n-butane. Cracking selectivity primarily controlled ratio n-butane O2 within reactant feed. Under -lean conditions, increasing temperature led increased decreased COx . addition surface-mediated chemistry, homogeneous gas-phase reactions likely...
A glucose hydrothermal char (HTC) was synthesized and ball milled to break chemical bonds, generate defects, form new structures.
In this work, we investigate the influence of Sn-loading and pore size MCM-41 materials on catalytic nopol production. Sn(IV) was anchored onto by incipient wetness impregnation with metal coverages within 0.01 0.5 Sn nm–2 (i.e., below monolayer content). We provide evidence that at 0.06 nm–2, is predominantly present as isolated centers, whereas higher octahedral and/or oligomeric species are formed, which exhibit lower activity. The rate production over Sn/MCM-41 ten times than analogous...
Abstract Boron‐containing materials, and in particular boron nitride, have recently been identified as highly selective catalysts for the oxidative dehydrogenation of alkanes such propane. To date, no mechanism exists that can explain both unprecedented selectivity, observed surface oxyfunctionalization, peculiar kinetic features this reaction. We combine catalytic activity measurements with quantum chemical calculations to put forward a bold new hypothesis. argue remarkable product...
Dispersing two-dimensional VO<sub>x</sub> species on β-SiC offers a new approach to scale up propane ODH.
Raman spectroscopy is a widely employed tool for characterization of heterogeneous catalysts, although it suffers somewhat from poor sensitivity at low concentrations or under in situ conditions. In this article, we describe the use variation surface-enhanced known as shell-isolated nanoparticle-enhanced enhancing supported metal oxide catalysts. We present general method which drop-cast Au@SiO2 nanoparticles onto oxide-functionalized 2D films, monoliths, pelletized powder samples to...
Copper(I) bromide catalyzes the regioselective Michael addition reaction of 2-amino-1,4-naphthoquinone (5) with methyl vinyl ketone and 2-propenal to provide easy access C-alkylated quinone derivatives, useful precursors 1-azaanthraquinones.
Abstract ChemInform is a weekly Abstracting Service, delivering concise information at glance that was extracted from about 100 leading journals. To access of an article which published elsewhere, please select “Full Text” option. The original trackable via the “References”
Correction for ‘Supported two- and three-dimensional vanadium oxide species on the surface of β-SiC’ by Carlos A. Carrero <italic>et al.</italic>, <italic>Catal. Sci. Technol.</italic>, 2017, DOI: 10.1039/c7cy01036b.