The article presents the results of studies on the synthesis of a new sorption material with a cross-linked structure (with a yield 94%) based on a ternary co-oligomer of 4-isopropenylphenol (I), styrene (II) and maleic anhydride (III) - their structuring (crosslinking) with ethylenediamine. The process was carried out in a block, at a temperature of 800C and a time of 3 hours. The ratio of co-oligomer and ethylenediamine is 1:2 mol. The initial co-oligomers were obtained by co-oligomerization of I, II and III at their equimolar ratio in the presence of the initiator di-tert-butyl peroxide (2% of the mixture of initial components). Temperature 1400C, time 10 hours. The gel chromatography data confirmed the formation of mainly co-oligomeric compounds under these conditions (87% are co-oligomers with Mw 575 and 980, and Mn 400 and 450, respectively). 13% are co-oligomers with Mw 3585 and Mn 2900. A study of the sorption properties of three-dimensional copolymers as sorbents for the extraction of uranyl ions from model aqueous systems (depending on the pH of the medium, the initial concentration of the said ions, and the holding time of the system) in statistical mode showed that they are highly effective. The degree of extraction (R) of uranyl ions at an optimal pH of 7 is more than 84.2%, while the sorption capacity (q) is 216.5 mg/g.

The results of alkylation of dicarbonyl compounds with 1,2,3-trihalopropane are presented, which is accompanied by rearrangement of the carbon skeleton and leads to the formation of β-substituted furans. Alkylation of β-dicarbonyl compounds with 1,2-dibromoethane at room temperature gives a C,C-cycloalkylation product, which isomerizes at a temperature above 180°C into a C,O-dialkylation product, a dihydrofuran derivative. Alkylation of dimetylacetonedicarboxylate with methyl iodide occurs similarly, the primary O-alkylation product undergoes rearrangement into a C-alkylation product at 180°C. It is also shown that such rearrangements occur with small radicals. The product of O-alkylation of dimethylacetone dicarboxylate with dimethyl acetal of bromoacetic aldehyde is stable at a temperature of 200°C, whereas the product of its hydrolysis isomerizes into a product of C-alkylation with further conversion into furan derivatives.

This article provides an extensive analysis of the significance and application prospects of integrative approaches characterizing new instructional methods in chemistry education. It explains that in the modern education system, the implementation of innovative teaching methods, particularly integrative approaches, plays a crucial role in facilitating interdisciplinary integration and allowing students to comprehend topics in a broader and deeper context. The article explores how these approaches in chemistry teaching effectively enhance students’ theoretical and practical knowledge. The focus is on contemporary teaching methods such as Problem-Based Learning (PBL), Project-Based Learning (PjBL), cooperative learning, the use of digital technologies, and practical laboratory work. These methods have significant potential to develop students' critical and analytical thinking skills, making learning more engaging and meaningful by confronting them with real-life problems. The ability of teachers to implement these new methods and their role in the teaching process is a central theme of the article. Additionally, the use of digital resources in the teaching process, the adaptation of teaching materials to the integrative approach, and the development of infrastructure are thoroughly discussed. The challenges encountered in applying integrative teaching approaches and ways to overcome them are also analyzed. The article also presents examples of new teaching methods successfully implemented in various parts of the world. The article concludes that integrative approaches in chemistry education make a significant contribution to the learning process and are vital tools for improving the quality of education. The widespread application of these approaches is important for enriching students' learning experiences and fostering the development of scientific thinking.

Azerbaijan has abundant raw material resources for biodiesel production, one of which is cotton oil. Taking into account the high cost and toxicity of methanol, a mixture of methanol, ethanol, propanol-1, and propanol-2 has been used for the first time in the production of biodiesel. In the presented work, various operational indicators (viscosity, density, ignition temperature, etc.) for biodiesel based on mixtures of cottonseed oil and low-molecular-weight alcohol tested by ASTM standards and also found optimal conditions, comparison of fuels, and biodiesel mixers have been carried out. The results of the research indicate that the obtained fuel mixtures are more efficient and have high performance characteristics. Additionally, by using NMR spectroscopy, the activity problems of alcohol mixtures in the transesterification reaction have been investigated.

A new sorbent has been synthesized based on a maleic anhydride-styrene copolymer modified with 2-allyl phenol ether. The conditions for the preliminary concentration of Pb(II) using the synthesized sorbent have been investigated. The adsorption isotherm for lead(II) ions with the sorbent has been constructed. It has been established that as the concentration of lead in the solution increases, the amount of adsorbed metal also increases, reaching a maximum at a concentration of 6×10⁻² mol/L (pH=5, C₍Pb²⁺₎=6×10⁻³ mol/L, adsorption capacity=420 mg/g). The influence of different mineral acids (HClO₄, H₂SO₄, HNO₃, HCl) at equal concentrations on the desorption of lead(II) from the sorbent has also been studied. Maximum desorption of lead(II) is observed in hydrochloric acid. The degree of extraction of lead(II) ions under optimal conditions

The present study investigated using expanded perlite (EP), as an affordable and environmentally friendly filler for polyvinyl chloride. The oxidative chlorophosphorylation (OxyCh) reaction was used for preparing EP/PhPVC composite. To evaluate the effect of EP on the composite's mechanical, electrical, and physical characteristics, the PhPVC (without EP) have been obtained too. A comprehensive comparison methods were carried out on optical and electrical properties of PhPVC and, EP/PhPVC. Ultraviolet-visible spectrophotometric analysis (UV-vis) demonstrated the differences between measured optical bandgap energy (Eg) of both PhPVC and EP/PhPVC. It shows that owing to its enhanced adsorption capacity and better electro-optical properties, these materials are expected to find a suitable role in various practical applications.

Nickel zinc aluminum layered double hydroxides (NiZnAl-LDH) were synthesized by co-precipitation and co-formation methods using urea in polyvinyl alcohol (PVA) solution. On the obtained nanocomposites nickel-zinc sulfide (NixZn1-xS; x=0.25, 0.5, 0.75) nanoparticles were synthesized by successive ionic layer adsorption and reaction (SILAR) method at room temperature (25°C). The photocatalytic degradation of Ponceau 4R (P4R) and Rhodamine 6G (R6G) with obtained LDH and sulphide nonmaterials were studied under visible light source (150W). NiZnAl-LDH and NixZn1-xS/NiZnAl-LDH (x=0.25, 0.5, 0.75) nanocomposites were characterized by Ultraviolet (UV) spectratrometer, X-ray diffractometer (XRD), Energy-dispersive X-ray (EDX), Fourier transform infrared (FTIR) spectratrometer and Scanning electron microscopy (SEM).