The composition of non-methane organic volatile compounds (VOCs) determined in 139 thermal gas discharges from 18 different geothermal and volcanic systems in Italy and Latin America, consists of C(2)-C(20) species pertaining to the alkanes, alkenes, aromatics and O-, S- and N-bearing classes of compounds. Thiophenes and mono-aromatics, especially the methylated species, are strongly enriched i...

The cleavage of C−O linkages in aryl ethers biomass-derived lignin compounds without hydrogenation the aromatic rings is a major challenge for production sustainable mono-aromatics. Conventional strategies over heterogeneous metal catalysts require addition homogeneous base additives causing environmental problems. Herein, we propose Ru/C catalyst modified by Br atoms selective direct bonds dip...

An episodic simulation is conducted to characterize midday (12:00–17:00 CDT) ozone (O3) photochemical production and to investigate its sensitivity to emission changes of ozone precursors in the Mexico City Metropolitan Area (MCMA) during an “O3-South” meteorological episode using the Comprehensive Air Quality Model with extensions (CAMx). High Ox (O3+NO2) photochemical production rates of 10–8...

Extractives from silver birch (Betula pendula) can play an important role in the future bioeconomy by delivering feedstock, for instance, antioxidative applications. It is, therefore, inevitable to gain knowledge of distribution extractive content and composition different tissues tree estimating potential volumes valuable extractable compounds. This study examines compound such as outer inner ...

To understand the pollution characteristics of volatile organic compounds (VOCs) in glass deep-processing industry, samples were collected using polyvinyl fluoride bags and quickly transferred to summa tanks for GC/MS/FID analysis. The emission VOCs, ozone formation potential secondary aerosol studied. results showed that VOCs emitted by six enterprises mainly aromatics OVOCs, accounting 35% 97...

Hydrogenation of six model feeds containing three-, two-, and one-ring aromatic compounds was investigated to gain insights into the aromatic hydrogenation reaction chemistry over a commercial NiMo catalyst under practical reaction conditions. The hydrogenation reactivity of the aromatic compounds followed the following order: phenanthrene ∼ two-ring aromatics . one-ring aromatic. Comparison wi...

Owing to its low cost and large availability, lignocellulosic biomass is being studied worldwide as a feedstock for renewable liquid biofuels. Lignocellulosic biomass is not currently used as a liquid fuel because economical processes for its conversion have not yet been developed. Currently, there are several routes being studied to convert solid biomass into a liquid fuel which involve multip...

Perfluorinated aromatics and heteroaromatics are versatile reagents for the modification of amino acids, peptides proteins. This is principally because they undergo rapid selective nucleophilic substitution reactions with biological nucleophiles. They are, therefore, exciting tools which to modulate activities drug-like properties natural synthetic biomolecules in drug discovery append, example...