Kohlenstoff‐katalysierte oxidative Dehydrierung von n‐Butan: Einfluss der sp3/sp2‐Phasenumwandlung auf die Produktselektivität

Liu, Xi; Frank, Benjamin; Zhang, Wei; Cotter, Thomas Patric; Schlögl, Robert

doi:10.1002/ange.201006717

Cited by 37 publications

(13 citation statements)

References 37 publications

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“…The modifications made to the diesel engine to fulfill the low emission standard have essentially changed the morphology and surface functionalization of the soot. In a recent study, onionlike carbon with a structural motif related to that observed for the soot particles (Figure 2) was furthermore shown to successfully catalyze the ODH of n ‐butane to butenes and butadiene 22. It was concluded that, in particular, the curvature of the outermost carbon shells—which becomes more pronounced the smaller the spherical carbon particles are—promotes the activation of molecular oxygen.…”

Section: Absolute Oxygen Abundance (At %) For the Individual Contribmentioning

confidence: 84%

Emission of Highly Activated Soot Particulate—The Other Side of the Coin with Modern Diesel Engines

2013

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Soot toxification: The increasing chemical activity of the emitted soot particulate produced by modern diesel engines is an unwanted side effect of modification of the motors. This makes Euro IV and VI soots chemically and biologically highly active and hazardous. Taking these factors into consideration, the question arises whether the reduced net mass of diesel soot particulate emitted overcompensates for the induced micro‐ and nanostructure.

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Section: Absolute Oxygen Abundance (At %) For the Individual Contribmentioning

confidence: 84%

Emission of Highly Activated Soot Particulate—The Other Side of the Coin with Modern Diesel Engines

2013

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“…There is an interesting analogy with carbon catalysts in the oxidative dehydrogenation of butane. Starting from nanodiamonds, a surface‐induced recrystallization to graphitic carbon occurs resulting in an increase in both activity and selectivity to butenes 32…”

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confidence: 99%

The Role of Palladium Dynamics in the Surface Catalysis of Coupling Reactions

Shao

Zhang

et al. 2013

Angew Chem Int Ed

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More than scratching the surface: The mechanism by which supported Pd nanoparticles (PdNPs) catalyze cross-coupling reactions is the subject of debate. The changes in supported PdNPs during coupling reactions are studied by exploiting modified carbon nanotubes (CNTs) as support materials. After catalysis, CNTs with scratched walls and PdNPs with surface crystalline distortions were discovered, offering insights into the catalytic mechanism

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“…[31] This implies that the formal reaction network consists of a target reaction (ODH of EB) and a consecutive degradation of the activated product molecule (ST combustion), which is frequently observed for the carbon-catalyzed ODH. [32][33][34] As a consequence, ST selectivity is almost 100 % at very low levels of EB conversion and steadily decreases with increasing EB conversion. The slope of the SX trajectory depends on the ratio of ODH rate vs. ST combustion rate.…”

Section: Catalytic Testing and Surface Analysis Of Hpcmentioning

confidence: 99%

Resin‐Derived Hierarchical Porous Carbon Spheres with High Catalytic Performance in the Oxidative Dehydrogenation of Ethylbenzene

et al. 2012

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Pre-shaped hierarchical porous carbon (HPC) spheres have been synthesized through a facile anion exchanged route. An industrial polymeric anion-exchange resin with a hierarchical pore structure was used as the carbon precursor. Its high porosity was conserved using an aluminate/silicate precursor forming a hard support to prevent the structural collapse during the carbonization process. Physicochemical bulk and surface properties of the obtained HPC spheres were characterized by X-ray diffraction, scanning and transmission electron microscopy, N(2) physisorption, and X-ray photoemission spectroscopy. Results obtained indicate that HPC keeps the abundant hierarchical porosity including meso- and macropores as well as the high surface area of the resin precursor. The as-synthesized HPC spheres were tested as a catalyst for oxidative dehydrogenation of ethylbenzene to styrene. The oxygen-rich catalyst surface formed under reaction conditions shows a high catalytic performance and stability, making HPC to a potential catalyst for this type of reaction.

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Kohlenstoff‐katalysierte oxidative Dehydrierung von n‐Butan: Einfluss der sp³/sp²‐Phasenumwandlung auf die Produktselektivität

Cited by 37 publications

References 37 publications

Emission of Highly Activated Soot Particulate—The Other Side of the Coin with Modern Diesel Engines

Emission of Highly Activated Soot Particulate—The Other Side of the Coin with Modern Diesel Engines

The Role of Palladium Dynamics in the Surface Catalysis of Coupling Reactions

Resin‐Derived Hierarchical Porous Carbon Spheres with High Catalytic Performance in the Oxidative Dehydrogenation of Ethylbenzene

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