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Synthesis and Characterization of Metal Complexes with 4-Methyl-N-(p-methylphenylsulphonyl)-N-(pyridin-2-yl)benzene Sulphonamide
Kingsley John Orie,
Chukwuebuka David Ike,
James Udochukwu Nzeneri
Issue:
Volume 9, Issue 3, September 2021
Pages:
46-51
Received:
9 July 2021
Accepted:
21 July 2021
Published:
4 August 2021
Abstract: 4-methyl-N-(p-methylphenylsulphonyl)-N-(pyridin-2-yl)benzene sulphonamide is an important sulphonamide derivative that houses multiple essential moieties like pyridine nucleus, benzene core and sulphonamide. The research is aimed at the synthesis of 4-methyl-N-(p-methylphenylsulphonyl)-N-(pyridin-2-yl)benzene sulphonamide via the ditosylation of 2-aminopyridine. The ditosylated 2-aminopyridine was complexed with Zinc (II) ion and Copper (II) ion. The structural elucidations were achieved through UV–Vis, FTIR, 1HNMR, 13CNMR, ESI-MS and Micro-analysis. The data of the elemental analysis agrees with the molecular masses of ESI-MS. The molar conductance revealed that all the complexes are non-electrolyte in nature. The UV-VIS electronic band of 375–362 nm was assigned to n → π* electronic transition of ligand metal charge transfer (LMCT) of zinc (II) complex while 490–358nm and 690nm were assigned to n → π* electronic transition of ligand metal charge transfer (LMCT) and d→ d to electronic transition of copper (II) complex respectively. The infrared (IR) spectra studies indicated the bond between the ligand and the transition metals. The spectra of the complexes showed an absorption shift, with the free ligand of azomethine having the absorption band of 1689.70 cm-1 while that of the complexes, Zn (II) and Cu(II) have the absorption bands of 1674.27cm-1 and 1651.12cm-1 respectively. The complexation of 4-methyl-N-(p-methylphenylsulphonyl)-N-(pyridin-2-yl)benzene sulphonamide may hopefully increase the biological and catalytic potential of the ligand in the pharmaceutical and chemical industries.
Abstract: 4-methyl-N-(p-methylphenylsulphonyl)-N-(pyridin-2-yl)benzene sulphonamide is an important sulphonamide derivative that houses multiple essential moieties like pyridine nucleus, benzene core and sulphonamide. The research is aimed at the synthesis of 4-methyl-N-(p-methylphenylsulphonyl)-N-(pyridin-2-yl)benzene sulphonamide via the ditosylation of 2-...
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Synthesis and Application of Manganese Oxide Catalysts in Oxidation and Hydrogenation Processes
Issue:
Volume 9, Issue 3, September 2021
Pages:
52-60
Received:
20 August 2021
Accepted:
7 September 2021
Published:
26 September 2021
Abstract: The analysis is made of the results of performed investigations: elaboration and study of physical-chemical properties of the catalysts on the basis of manganese oxides and on their use in various fields of chemical industry. Physical-chemical and technological foundations of the formation of oxide-manganese catalyst-absorbent of new-type are validated. It has been shown that for processes of purification of combustible gases from H2S and organic sulphur compounds he most favorable thermodynamic and kinetical conditions are created at manganese catalyst the composition of which near to Mn3O4. This type of the catalyst, together with MnO2 and, partially with Mn2O3, hold a firm own place in the catalytic processes. The direction, associated with the use of modified alumooxide carrier for elaboration of oxide-manganese and metallic catalysts (Pt, Pd) became as the new and prospective in the technology of carriers and catalysts, used in the processes of oxidation and hydrogenation. Technological modes, realized in given method, provide to activate solid-phase reaction of the formation of calcium aluminates at lower temperatures, as well as to stabilize surface-structural characteristics and to enhance thermal stability and mechanical strength of modified carrier. In the technology of the catalysts of aluminium oxide, by the use, of the carrier, preliminary modified by calcium oxide, the Mn-Pd catalyst was elaborated available for oxidation of CO and hydrocarbons of spent gases of the motor transport. The addition of palladium to the oxide-manganese catalyst leads to the formation of new centers on the surface which are active in the reaction of CO oxidation. The processes of the formation of manganese catalysts in reaction medium were studied. The method for preparing of the Mn-Pd catalyst includes processing the samples with an ammonia water solution. Treatment of the catalyst with ammonia water causes the formation of a palladium ammonia complex, which decomposes witha formation of palladium black. It can be concluded that the treatment with ammonia water leads to the completion of the formation of the active surface of the catalyst and to the temperature decrease of complete oxidation of CO. The experience of industrial operation of catalysts on the basis of modified alumocalcium carriers has shown that by duration of efficient operation of reburning of discharged gases of the engines of internal combustion they may compete with well-known industrial marks of the catalysts.
Abstract: The analysis is made of the results of performed investigations: elaboration and study of physical-chemical properties of the catalysts on the basis of manganese oxides and on their use in various fields of chemical industry. Physical-chemical and technological foundations of the formation of oxide-manganese catalyst-absorbent of new-type are valid...
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Production of Nitrogen Fixing and Phosphorous Solubilizing Liquid Bio-fertilizer for the Improves of the Crops Growth and Yield
Zeynu Shamil,
Rezika Tofike
Issue:
Volume 9, Issue 3, September 2021
Pages:
61-67
Received:
18 August 2021
Accepted:
7 September 2021
Published:
26 September 2021
Abstract: Bio-fertilizers are the result of fermentation process that including efficient life soil microorganisms specially bacteria and fungi. They reform plant growth and productivity through deliver of easily utilizable nutrients. They are cost-effective and eco-friendly bio-inoculants having great potential to enhance agricultural crop yield in sustainable path. Bio-fertilizers are classified into different types based on their purpose such as nitrogen-fixing, phosphate-solubilizing, k-mobilizing, and other plant growth-promoting bio-fertilizers. Promoting plant growth by different way Solid-state fermentation (15%-40% moisture content) and submerged (liquid medium 95%moisture content) fermentation are two main types of fermentation used sample for the production of bio-fertilizers. Each type of bio-fertilizer was prepared by selection of efficient microbial strain that can be isolated from environmental sample in this study by using direct manipulation of the environmental sample (in quit) with selective microbial nutrient then by using absorption of ingredients we can analysis bacterial growth curve analysis. Finally, we do that affirmation of microbial sp. by using morphological and biochemical test. Its cultivation using specific nutrient medium by formulations of using liquid base (broth). So Bio-fertilizers was recommended and an effective substitutable matter for socio economic and environmental friend of chemical fertilizers (CF) for farm land productivity.
Abstract: Bio-fertilizers are the result of fermentation process that including efficient life soil microorganisms specially bacteria and fungi. They reform plant growth and productivity through deliver of easily utilizable nutrients. They are cost-effective and eco-friendly bio-inoculants having great potential to enhance agricultural crop yield in sustaina...
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BiVO4/MnO2 Composite Photocatalytic Material for the Shale Gas Flowback Wastewater Treatment
Yanling Liu,
Zhengxin Yang,
Longjun Xu,
Chenglun Liu,
Teng Zhang,
Zao Jiang
Issue:
Volume 9, Issue 3, September 2021
Pages:
68-72
Received:
7 September 2021
Accepted:
27 September 2021
Published:
29 September 2021
Abstract: The management and disposal of the shale gas flowback wastewater is one of the greatest challenges associated with the exploration and extraction of unconventional natural gas resources. High salinity and complex chemical composition of fracturing fluids are the main limiting factors for beneficial reuse of the shale gas flowback wastewater, which has become a tough problem in the global environmental field. In this study, a composite photocatalytic oxidant of MnO2 modified BiVO4 was successfully synthesized with one-step hydrothermal method, and used to treat the shale gas flowback wastewater. The synergistic effect of photocatalysis and oxidation has made a great contribution to the removal of COD value in wastewater. When catalyst dosage was 0.6 g, the pH value was controlled to 3, and visible light exposure was 4 h, the prepared BiVO4/MnO2 exhibited the optimum photocatalytic oxidation activity, and the removal efficiency of COD could reach 65.5%, which is better than that of pure BiVO4 or MnO2. Furthermore, in this case, the COD value could be decreased from 188 mg/L to 64.9 mg/L, complying with the first-level standard limit requirements in the integrated wastewater discharge standard (GB8978-1996). Moreover, in the viewpoint of dynamics, Langmuir isothermal-like equation can better describe the relationship between COD removal efficiency and illumination time.
Abstract: The management and disposal of the shale gas flowback wastewater is one of the greatest challenges associated with the exploration and extraction of unconventional natural gas resources. High salinity and complex chemical composition of fracturing fluids are the main limiting factors for beneficial reuse of the shale gas flowback wastewater, which ...
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