In this work, choline chloride/urea (1:2), choline chloride/oxalic acid (1:1), choline chloride/ethylene glycol (1:2), benzyltriphenylphosphonium chloride/ethylene glycol (1:11), tetrabutylammonium bromide/ethylene glycol (1:4), tetrabutylammonium bromide/diethylene glycol (1:4), and tetrabutylammonium bromide/triethylene glycol (1:4) were examined as deep eutectic solvents (DESs). The melting points and dynamic viscosities of these solvents were determined, and the solubilities of benzene, toluene, and ethylbenzene in each were assessed using the cloud point method between T = 303.15 and 353.15 K at atmospheric pressure. The solubilities of each of these three aromatic compounds in these DESs were found to increase with increases in temperature. Both the hydrogen bond acceptors and hydrogen bond donors in the DESs were also shown to affect solubility, with the former having a greater effect and this effect decreasing in the order of tetrabutylammonium bromide > benzyltriphenylphosphonium chloride > choline chloride. The simplified dual-parameter equation and the Apelblat empirical equation were used to correlate the experimentally determined solubilities of benzene, toluene, and ethylbenzene in the seven DESs, and the latter equation generated higher correlations.

Two magnetic MOFs with a pcu net, constructed by using hexagonal Co6 rings and zigzag Co4 clusters, respectively are reported. Furthermore, activated 1 exhibits an excellent catalytic selectivity in the allylic oxidation reaction of cyclohexene to form an α,β-unsaturated ketone.

Emissions of volatile organic compounds (VOCs) have a substantial impact on the environment, and absorption methods are an important means of dealing with VOCs. In order to screen potential deep eutectic solvents (DESs) as liquid absorbers for capturing xylenes, seven DESs were prepared and were verified by Fourier transform infrared spectroscopy and nuclear magnetic resonance spectroscopy. The melting points of all DESs were well below the melting points of their raw materials, and the water content of all the DESs was less than 0.05 wt %. The viscosities of the seven DESs decreased with increasing temperature. The solubility of o-, m-, and p-xylene in the DESs was determined by the cloud point in the range of 303.15−353.15 K. The tetrabutylammonium bromide-based DESs had the greatest potential to dissolve xylene. Tetrabutylammonium bromide:triethylene glycol (1:4) exhibited the highest solubility for o-, m-, and p-xylene, with the mole fraction solubilities of 0.4075, 0.3754, and 0.3820, respectively (each at 353.15 K). The solubility magnitudes of the three isomers exhibited an overall trend of o-xylene > p-xylene ∼ m-xylene. The experimental solubility data were fitted with the dual-parameter equation and the Apelblat equation; the latter was a better fit.