Studies on single-atom catalysts (SACs) with individually isolated metal atoms anchored specific supports have gained great interest in photocatalysis due to their enhanced catalytic activity and optimal atom utilization. By providing the optimized number of active sites enhancing intrinsic activity, SACs afford a distinctive platform for at atomic level. In this study, we investigate photocata...

Novel bio-based aliphatic copolyesters, poly(lactic acid-co-10-hydroxy decanoate) (P(LA-co-HDA), PLH), were successfully synthesized from lactic acid (LA) and 10-hydroxycapric acid (HDA) by a thermal polycondensation process, in the presence of p-toluenesulfonic acid (p-TSA) and SnCl2·2H2O as co-catalyst. The copolymer structure was characterized by Fourier transform infrared (FTIR) and proton ...

The study of geochemical transformations undergone by `biological markers' after their incorporation into sediments is an important ®eld of organic geochemistry. Combined with laboratory simulation experiments, molecular mechanics calculations have been shown to be very useful to establish the reaction pathways, and to predict intermediate components and stable reaction end products, especially...

Lignin is an abundant and environmentally friendly biopolymer that contains a large number of phenolic hydroxyl functional group. In this paper, alkaline lignin was modified using different acidic DES (choline chloride/p-toluenesulfonic acid choline chloride/lactic acid) at 130 ℃ (TC-lignin LC-lignin) the conformational relationship between products antioxidant activity investigated. characteri...

Burstein and Lieberman (1) have reported a procedure for the examination of urinary ketosteroid sulfates which involves the extraction of an acidified urine with ethyl acetate followed by solvolysis of the sulfates in the organic phase at 39” for 24 hours. Although the previous authors (1) recognized that this technique partitions water and mineral acid into the ethyl acetate, they did not repo...

Selective conversion of biomass-derived carbohydrates into 5-hydroxymethylfurfural (HMF) is of great significance for biomass conversion. In this study, a novel solid Brønsted acid was prepared simply by the copolymerization of paraformaldehyde and p-toluenesulfonic acid and then used to catalyze the conversion of various carbohydrates into HMF in γ-valerolactone-water (GVL/H2O) reaction medium...