An activated carbon (AC) with a high surface area of 4320.7 m2/g was synthesized via the chemical and thermal processing of walnut residues. The resulting activated charcoal was characterized by various techniques, including Brunauer–Emmett–Teller (BET) surface area analysis, scanning electron microscopy (SEM), and IR spectroscopy. The prepared activated carbon was studied for its capacity to adsorb CO2 gas. When exposed to CO2 for 60 min in a closed chamber at atmospheric pressure at 25 °C, the adsorption of a notable 301.1 mmol CO2 (13.25 g CO2) per gram of activated carbon was observed.

There has been considerable interest in the study of organic ligands containing two or more different donor atoms because such ligands through light on the nature of the metalligands bonding. Selenium and bismuth metals react with di-2-pyridyldisulfide (Py2S2) in refluxing toluene to give the compounds Se(pyS)4 and Bi(pyS)3 in high yield. Reactions of selenium or bismuth/Py2S2 and iodine in different molar ratio was carried out in refluxing toluene led to the formation of Se(pyS)3I, Se(pyS)2I2, Bi(pyS)2I and Bi(pyS) I2 respectively. All the compounds were characterized physico-chemically and their antibacterial activity were studied 1,2. Copper and nickel powder react directly with sodium dithiocarbamate in organic solvents and produce the corresponding metal complexes. The result showed that the copper powder react in chloroform more readily than any other system examined. This reaction has been successfully applied in the determination of copper content in brass and bronze powder 3. The powder of tin metal is oxidized by Et2P(S)SS(S)PEt2 to tin(II) diethyldithiophosphate, the reaction involve the insertion of the metal into the S-S bond 4 .

Key indicators: single-crystal X-ray study; T = 100 K; mean (C-C) = 0.006 Å; R factor = 0.035; wR factor = 0.066; data-to-parameter ratio = 21.9.In the crystal structure of 1-methyl-3-allyl benzotriazolium iodide, C 10 H 12 N 3 + ÁI À , centrosymmetric dimers of coplanar cations are -stacked with an interplanar distance of 3.453 (6) Å . The iodide anions are situated above and below the formally positive charged triazolium rings. Related literature

This work includes the preparation of ionic liquid 1,4-dimethylpiperidinium iodide [MMPip]I and its salts with ferric chloride as Lewis acid in different molar proportions [MMPip]I/nFeCl 3 (n=1,2,3). The prepared compounds were diagnosed by spectroscopic and physical methods such as 1 H-NMR, FT-IR, elemental analysis (CHN) and other techniques. The thermal stability of these compounds was studied to use in the extractive desulfurization process (EDS). The efficiency of these compounds in removing sulfur compounds from the petroleum model was examined using dibenzothiophene (DBT) with a concentration of 1000 ppm dissolved in the solvent of normal hexane. The results showed that the compounds used had an acceptable efficiency of up to 30% despite using medium amounts of the extracted agent relative to the oil model; these compounds have a promising future in extractive sulfur removal processes.

The ionic liquid of pyridine base [emPy]I was prepared. Then, a series of complex salts were designed from it with some transition metal chlorides Fe(III), Co(II), Ni(II) and Cu(II) as Lewis acids. The compounds were characterized by spectroscopic and physical methods such as nuclear magnetic resonance " 1 H-NMR", infrared spectroscopy "FT-IR", electronic spectrum "UV", mass spectroscopy "MS", elemental analysis "CHN", magnetic susceptibility, molar conductivity, and other methods. The thermal stability of these compounds was also verified within the temperature range of (25-1000 °C). [emPy]I and its complex salts were tested in the extractive desulfurization process EDS. The procedure treats them with the model fuel of sulfur content of 2000 ppm, prepared from dissolving dibenzothiophene DBT in n-hexane. The ratio of sulfur removal was estimated using the GC-FID technique. The optimal conditions for EDS process were studied, and the possibility of reusing the extractant more than once without regeneration.