OA?ZnCl₂/SG supported catalyst was synthesized by sol?gel process using octanoic acid?zinc chloride deep eutectic solvents (OA?ZnCl₂ DESs) as additive. The structure of the catalyst was analyzed by infrared spectroscopy, X?ray diffraction, N₂ adsorption?desorption and scanning electron microscopy. The performance of oxidative desulfurization was studied by using OA?ZnCl₂/SG as adsorbent and catalyst, and hydrogen peroxide as oxidant. The loading dose of DESs, reaction temperature, n(H₂O₂)/n(S) ratio, the amount of catalyst and the effect of different sulfides on desulfurization rate were investigated. The results show that the desulfurization rate of the catalyst reaches 95.6% under the optimal conditions, and after 5 cycles, the desulfurization rate drops to 89.7%.

Heterocyclic N?oxides are important structural units in organic synthesis and pharmaceutical molecules. Under mild conditions, the combination of visible?light catalysis and transition metal catalysis can simply and efficiently realize the direct ortho?C—H bond acylation reaction of heterocyclic N?oxides and benzoyl formic acid. The reaction system has good universality and excellent selectivity, and can obtain a series of N?oxides substituted by ortho?acyl groups at a moderate to good yield.

Using sodium 1,4?dihydroxybenzene?2?sulfonate sodium (NaH₂L), 4,4'?bipyridine (bipy), Co(NO₃)₂·6H₂O and NiSO₄·6H₂O as raw materials, two mononuclear complexes containing nitrogen?donor ligands with similar structures, M(bipy)(H₂O)₄·(2H₂L)·4H₂O（M=Co（1）， Ni（2））, were synthesized by heating reflux method. The molecular structurse and composition were determined by single crystal X?ray diffraction, elemental analyses and thermogravimetric analyses. Co²⁺ and Ni²⁺ are six?coordinated, showing octahedral configuration, which are binded with one bipy molecule and four water molecules. H₂L^- anion does not coordinate with metal ions, balancing charges. In the complexes, H₂L^- anions, free water molecules and [M(bipy)(H₂O)₄]²⁺ cations can generate hydrogen bonds, which can form a network structure and increase the stability of the complexes. The fluorescence studies indicate that the maximum emission peaks of complexes 1 and 2 were 380 nm and 390 nm, respectively, which are characteristic fluorescence emission peaks of NaH₂L. The red shifts of the fluorescence emission peaks were due to the charge transfers between metal and ligand.