BACKGROUND Observed seasonal differences in particulate matter (PM) associations with human health may be due to their composition and to toxicity-related seasonal interactions. OBJECTIVES We assessed seasonality in PM composition and in vitro PM pro-inflammatory potential using multiple PM samples. METHODS We collected 90 weekly PM10 and PM2.5 samples during the rainy-warm and dry-cold sea...

The copper-based catalyst is considered to be the only for electrochemical carbon dioxide reduction produce a variety of hydrocarbons, but its low selectivity and current density C2 products restrict development. Herein, core-shell xZnO@yCu2O catalysts CO2 was fabricated via two-step route. high 49.8% on ZnO@4Cu2O (ethylene 33.5%, ethanol 16.3%) with an excellent total 140.1 mA cm?2 achieved ov...

Herein, we present three new binuclear copper(II) complexes containing different polycyclic aromatic hydrocarbons, able to catalyze the oxidation of 3,5-di-tert-butylcathecol, a model substrate for catechol oxidase. The ligands and were successful characterized in solid solution states. structure C1 was determined by X-ray crystallography it contains [CuII2(L1-?-phenoxo)(OAc)(H2O)2] unit, with ...

The oxidative coupling of methane (OCM) to C2 hydrocarbons (C2H4 and C2H6) has aroused worldwide interest over the past decade due rise vast new shale gas resources. However, obtaining higher selectivity can be very challenging in a typical OCM process presence easily oxidized products such as C2H4 C2H6. Regarding this, different types catalysts have been studied achieve desirable yields. In th...

The task of CO2 decomposition is one the components problem associated with global warming. One promising directions its solution use low-temperature plasma. For these purposes, different types discharges are used. Microwave discharge in liquid hydrocarbons has not been studied before for this problem. This paper presents results a study microwave products Nefras C2 80/120 (petroleum solvent, m...

Elucidation of the intrinsic catalytic principle iron carbides remains a substantial challenge in iron-catalyzed Fischer-Tropsch synthesis (FTS), due to possible interference from other Fe-containing species. Here, we propose facile approach synthesize single-phase θ-Fe3C via pyrolysis molecularly defined Fe-C complex (Fe4[Fe(CN)6]3), thus affording close examination its behavior during FTS. Th...

In traditional kerogen pyrolysis experiments, the effects of minerals and rock fabric on products were ignored. To further clarify role mineral matrix hydrocarbon generation retention, a closed anhydrous experiment was conducted core plugs, powdered from clay-rich sample Maoming oil shale within temperature range 312 °C to 600 °C, at fixed pressure 30 Mpa. The experiment’s results showed that y...

Direct valorization of methane via oxidative coupling (OCM) is an encouraging alternative to conventional oil-based processes for the production light hydrocarbons (ethane and ethylene). Abundant, inexpensive simple oxides such as MgO La2O3 possess ability selectively activate methane. However, during OCM, selective conversion ethane following dehydrogenation ethylene are threatened by thermody...