Electrocatalytic CO2 reduction to generate multicarbon products is of interest for applications in artificial photosynthetic schemes. This is a particularly attractive goal for CO2 reduction by copper electrodes, where a broad range of hydrocarbon products can be generated but where selectivity for C-C coupled products relative to CH4 and H2 remains an impediment. Herein we report a simple yet ...

An organic macromolecular residue, prepared from the Murchison meteorite by treatment with hydrofluoric and hydrochloric acids, was subjected to online thermochemolysis with tetramethylammonium hydroxide (TMAH). The most abundant compound released by thermochemolysis was benzoic acid. Other abundant compounds include methyl and dimethyl benzoic acids as well as methoxy benzoic acids. Short chai...

Project description: C2-C5 alkanes, alkenes and alkynes are useful tracers of natural and anthropogenic emissions. With diverse emission sources and moderately short atmospheric lifetimes, non-methane hydrocarbons (NMHCs) exhibit significant latitudinal, seasonal and vertical gradients [1]. They primarily react with the hydroxyl (OH) radical in the atmosphere, although also with ozone, nitrate,...

Abstract The seismic stratigraphy and sedimentary facies of the Cretaceous Paleogene successions in north-eastern offshore part Taranaki Basin, New Zealand have been investigated order to unravel their depositional evolution identify potential hydrocarbon plays. Interpretation regional lines covering entire shelf-slope deepwater regions as well integrating allows identification several seismic-...

Exposure to polycyclic aromatic hydrocarbons (PAHs) is the major human health hazard associated with the Deepwater Horizon oil spill. C2-Chrysenes are representative PAHs present in crude oil and could contaminate the food chain. We describe the metabolism of a C2-chrysene regioisomer, 6-ethylchrysene (6-EC), in human HepG2 cells. The structures of the metabolites were identified by HPLC-UV-flu...

Saturated (C2-C11) and unsaturated (C4-C5, C8) dicarboxylic acids were measured in arctic aerosol and surface snowpack samples collected during dark winter (February) and light spring (April-May) using a gas chromatography and gas chromatography/mass spectrometry. Their molecular distributions were characterized by a predominance of oxalic acid (C2), except for few spring snowpack samples that ...

Reactions of neutral vanadium oxide clusters with small hydrocarbons, namely C2H6, C2H4, and C2H2, are investigated by experiment and density functional theory (DFT) calculations. Single photon ionization through extreme ultraviolet (EUV, 46.9 nm, 26.5 eV) and vacuum ultraviolet (VUV, 118 nm, 10.5 eV) lasers is used to detect neutral cluster distributions and reaction products. The most stable ...

The demand of compact and energy saving procedures for the synthesis of H2, synthesis gas and olefins from hydrocarbon fuel is expanding very rapidly as these are essentially needed in fuel cells, additive for fuel and for the cleaning and purification of flue gas. The concern is in particular to more efficient and environmentally more compatible concepts of the energy supply and reduction of p...

Polycyclic aromatic hydrocarbons (PAHs) are omnipresent in the interstellar medium (ISM) and also in carbonaceous meteorites (CM) such as Murchison. However, the basic reaction routes leading to the formation of even the simplest PAH-naphthalene (C10 H8 )-via the hydrogen-abstraction/acetylene-addition (HACA) mechanism still remain ambiguous. Here, by revealing the uncharted fundamental chemist...