Graphitic carbon nanotubes (GCNTs) were fabricated from in situ produced graphitic carbon by calcining biomass/melamine/Ni(NO3)2·6H2O. Ni-based hybrids (NiOx@GCNTs) displayed superior catalytic capacity in direct dehydrogenation of ethylbenzene. The specific reaction rate can reach up to 8.1 μmol m(-2) h(-1), and unprecedented stability was obtained over 165 h without any activation process.

Urban air background concentrations of benzene, toluene, ethylbenzene, and xylenes (BTEX) were measured in 2007 in the Tricity area (Gdansk, Gdynia, and Sopot) and Tczew applying two types of passive samplers: Home-made permeation passive samplers and two diffusive passive samplers Orsa 5 (National Dräger) and Radiello (FS Maugeri). Differences between the time-weighted annual averages concentr...

OBJECTIVE To determine if non-elite athletes undertaking short duration running exercise adjacent to a busy roadway experience increased blood levels of common pollutant volatile organic compounds (benzene, toluene, ethylbenzene and xylene (BTEX)). DESIGN AND SETTING The study was observational in design. Participants (nine males/one female non-elite athletes) ran for 20 min, near a busy road...

This study was conducted to determine species differences in the metabolism of ethylbenzene (EB) in liver and lung. EB (0.22-7.0mM) was incubated with mouse, rat and human liver and lung microsomes and the formation of 1-phenylethanol (1PE), acetophenone (AcPh), 2-ethylphenol (2EP), 4-ethylphenol (4EP), 2,5-ethylquinone, and 3,4-ethylquinone were measured. Reactive metabolites (2,5-dihydroxyeth...

Anaerobic ethylbenzene metabolism in the betaproteobacterium Aromatoleum aromaticum is initiated by anaerobic oxidation to acetophenone via (S)-1-phenylethanol. The subsequent carboxylation of acetophenone to benzoylacetate is catalyzed by an acetophenone-induced enzyme, which has been purified and studied. The same enzyme is involved in acetophenone metabolism in the absence of ethylbenzene. A...

A gram-positive polychlorinated biphenyl (PCB) degrader, Rhodococcus sp. strain RHA1, metabolizes biphenyl through the 2-hydroxypenta-2,4-dienoate (HPD) and benzoate metabolic pathways. The HPD metabolic pathway genes, the HPD hydratase (bphE1), 4-hydroxy-2-oxovalerate aldolase (bphF1), and acetaldehyde dehydrogenase (acylating) (bphG) genes, were cloned from RHA1. The deduced amino acid sequen...

Kinetic and thermodynamic parameters of the catalysts containing 15% Ni nanoparticles prepared by levitation-jet method in hydrogenation xylenes, ethylbenzene, isopropylbenzene were studied using a laboratory-made chromatographic setup. At relatively low hydrogen pressure (2 atm) temperatures 423–493 K, our provide high extent conversion compounds selectivity concerning p-xylene.