The development of renewable fuels is driven by different countries due to future shortages of fossil fuels and damage to the environment caused by their use. A promising alternative to replace the growing energy crisis and reduce environmental damage is second generation ethanol, which can be produced from sugarcane-based lignocellulosic biomass, an excellent raw material with high availability and abundance that does not cause competition with energy sources. Second generation production, generally characterized by preprocessing, hydrolysis and fermentation, is not as advanced as first generation production. However, with continuous scientific effort, this change can be altered. A clear understanding of the chemical changes that occur through hydrolysis of lignocellulosic biomass is critical to process control and optimization. In this sense, the development of graphite and paraffin composite sensors, modified with carbon nanotubes (FMWCNTs) and molecularly printed polymers (MIPs) for the determination of D-arabinose is an excellent option, because these sensors have high selectivity and sensitivity in the analyzes.For this reason, the present work presents a chemical study of the functional groups of the chemical species present on the surfaces of the materials using the Fourier Transform Infrared Spectroscopy (FTIR) technique and a morphological analysis by the Scanning Electron Microscopy (SEM) technique.

In this study a series of nine 3-hydroxynaphthalene-2-carboxanilides, disubstituted on the anilide ring by fluorine, chlorine and bromine in various positions, was prepared by microwave-assisted synthesis and characterized. The compounds were tested for their activity related to the inhibition of photosynthetic electron transport (PET) in spinach (Spinacia oleracea L.) chloroplasts. The PET-inhibiting activity of the compounds was within a wide range, but rather moderate; the highest activity within the series of the compounds was observed for N-(3,5-difluorophenyl)-3-hydroxynaphthalene-2-carboxamide. The compounds were found to inhibit PET in photosystem II.

Aluminum fluoride has been widely used in industrial fields, for example it can be used as a catalyst for the synthesis of fluorocarbons and is used as a catalyst or co-catalyst in fluorination. In recent years, the use of this material in the technology of rechargeable lithium-ion batteries is of great importance. It is produced in white crystalline powder. Aluminum fluoride contains various phases such as α, β, η, κ, θ. All of these crystalline phases contain octahedral [AlF₆] units that form three-dimensional networks, but with different links in composition. The thermodynamic phase is stable α-AlF₃ and the other phases are metastable. Our goal is to produce aluminum fluoride using a fast and HF-free method. In this paper, the synthesis of AlF₃ by the incineration method was investigated. Aluminum nanoparticles powder was obtained by the ball-mill method of aluminum scraps and by mixing with polytetrafluoroethylene and burning their composition, AlF₃ crystals were created in the carbon. The X-ray diffraction pattern as well as the IR spectrum analysis confirmed this claim. It is expected that we will be able to use this material as a catalyst in organic reactions such as the Heck reaction and improve its performance using cocatalysts.

2,2-Dimethyl-5-((phenylamino)methylene)-1,3-dioxane-4,6-dione prepared by reaction of Meldrum’s acid with triethyl orthoformate and aniline, reacts with active methylene nitriles to afford 2-oxo-1,2-dihydropyridine-3-carboxylic acid derivatives useful as drug precursors or perspective ligands.

In this study, a novel porphyrin-based metal–organic framework (Co-Por MOF) has been successfully synthesized by a simple one-step solvothermal method. we report a metal organic framework based on covalent interaction of an organic linker, 5,10,15,20-tetrakis(4-carboxyphenyl) porphyrin (TCPP) with cobalt clusters. The properties of this material were analyzed by powder X-ray diffraction (XRD), ultraviolet visible adsorption spectroscopy (UV–Vis), fourier-transform infrared spectroscopy (FTIR), differential reflectance spectroscopy (DRS).