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119 articles for “Substrate”
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Catalytic hydrogenation of dimethyl-nitrobenzene to dimethyl-aniline over Ni catalysts
Abstract: The catalytic transfer hydrogenation of dimethyl-nitrobenzene (DN) to Dimethyl-aniline (DA) was studied in the temperature range 343–403 , pressure range of 4–10 bar H2 and ethanol as solvent using Ni on alumina-silicate as catalyst above agitation speed 800 rpm. The substrate feed concentration was varied in the range from 0.124 to 0.745 kmol/m3 while catalyst loading was in the range 4–12% (w/w) of dimethyl-nitrobenzene. Dimethyl-aniline was the only reaction product, …
Published in International Journal of Chemical Engineering and Processing · Vol. 3, Issue 2, 2017 · pp. 19–29 Read article
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Chemical Synthesis and Characterization of Polyaniline for Supercapacitors Application
Abstract: Various polyaniline (PANI) synthesis methods are reported in the literature, depending on the experimental parameters involved (T, t, doping, and mixing procedure). Herein, three chemical polymerization methods were used to synthesis PANI from aniline monomer: rapid oxidation (OR), controlled oxidation (CO), and interfacial oxidation (OI). The PANI was therefore deposited next by drop casting on a silicon (Si) substrate. X-ray diffraction, Raman spectroscopy, and scanning electron microscopy were used to …
Published in International Journal of Chemical Engineering and Processing · Vol. 8, Issue 2, 2022 · pp. 9–16 Read article
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Effect of Temperature on Fungi Concentration in Crude Oil Remediation in an Aerated Bioreactor
Abstract: This research work was conducted to demonstrate the significance of temperature on the characteristics of fungi growth of crude oil degradation in fresh and salt water media. Comparison of fresh and salt contaminated water media was examined, the effect of temperature on crude oil degradation and the characteristics of total heterotrophic bacteria and fungi action. For Total Heterotrophic Fungi (THF) were Aspergillus niger, Aspergillus flavus, mucor sp, penicillium sp, Aspergillus …
Published in International Journal of Environmental Chemistry · Vol. 8, Issue 2, 2022 · pp. 12–21 Read article
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ISONIAZID STABILIZED TUNGSTEN TRICARBONYL COMPLEX: A NEW CO-RELEASING MOLECULE WITH ANTIBACTERIAL ACTIVITY
Abstract: Transition metal carbonyl complexes substituted with biologically active ligand can act as CO-releasing molecules which have beneficial roles including antimicrobial activity. Careful choices of ancillary ligand such as isoniazid help in eliminating issues of toxicity that may arise from drug substrates. Substitution reaction of tungsten hexacarbonyl with isoniazid in the presence of trimethylamine N-oxide under nitrogen atmosphere was carried out at ambient temperature for 72 hrs. The product was characterized …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 5, Issue 1, 2019 · pp. 36–43 Read article
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Extraction of Xylanases from Media Based on three Agricolous Co-products by An Aqueous Two-phase System
Abstract: Jonesia denitrificans BN13 grows very well on a medium made out of agricultural byproducts like orange peel, esparto grass, and retam; the relative enzyme activity of these three substrates was 0.662, 0.711, and 0.835 U/ml, respectively First time xylanases were effectively extracted utilising aqueous two-phase system (ATPS) that had 3.5% PEG, 14% KH2PO4/K2HPO4, and 9% KI, The inclusion of cells resulted in much improved output from the system, which is …
Published in International Journal of Chemical Synthesis and Chemical Reactions · Vol. 8, Issue 2, 2022 · pp. 7–15 Read article
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Development of Effective Electrodes and Electricity Generation in Continuous Microbial Fuel Cell using Poultry Wastewater
Abstract: The Microbial Fuel Cell was designed for batch and continuous operations and the electrodes were developed using a simple and effective technique known as phase inversion. The different combinations of electrodes were used in the experiment to get the maximum power output and organic matter removal. The poultry wastewater was used as substrate and was comparatively studied with Luria Bertani (LB) solution. The best combination of electrode was found to …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 4, Issue 1, 2018 · pp. 1–11 Read article
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Valorization of agro-industrial waste into bioethanol: a case of brewers spent grain
Abstract: AbstractThe global impetus to produce alternatives to petroleum-based fuels and value-added chemicals to reduce greenhouse gases are putting pressure on the industries to diversify and valorize byproducts. By-products valorization of the brewery industry such as spent grain has given critical attention for long-term socio-economic and environmental benefits. Brewer`s spent grain is the major by-product of the brewing industry, represses around 85% of the total by-product generated. In the current work, …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 6, Issue 1, 2020 · pp. 1–20 Read article
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Development of Efficient Electrode and Design of Microbial Fuel Cell to Generate Electricity from Waste Water
Abstract: The study was focused on the development of composite electrodes and design of Continuous Microbial Fuel Cell to generate electricity from waste water. The electrodes were developed with different combinations of catalysts using phase inversion technique. In MFC Nafion 117 membrane was used as a proton exchange membrane and sewage waste water as substrate for the E.coli bacteria, which decomposes the organic matter and produces electrons. Different combination of electrodes …
Published in International Journal of Renewable Energy and its Commercialization · Vol. 7, Issue 1, 2021 · pp. 7–18 Read article
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Kinetics and Mechanism of Ruthenium(III) Catalysed Oxidation of L-Arginine by Periodate in Alkaline Medium
Abstract: The kinetics of the ruthenium(III) catalysed oxidation of L-arginine by periodate was studied spectrophotometrically in alkaline medium at 280 nm and at a temperature 35 ± 0.1°C. It was found that the reaction is first order with respect to [catalyst] and [periodate]. The reaction showed fractional order dependence on [substrate] and [alkali]. The oxidation product of the reaction was found to be aldehyde. The anionic species of arginine (Arg) is …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 2, Issue 1, 2016 · pp. 12–20 Read article
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Review on Preparation and Applications of Formazan Compounds
Abstract: The objective of the survey designated in this study is to predict the redox-active feature of formazan derivatives. To realize this purpose, preparation processes and investigation approaches of the formazan derivatives are developed. The redox properties of formazan derivatives were identified via electrochemical approaches and the first samples of isolated and well-investigated formazan products are designated in this review. Formazan derivatives (as a dyes) are synthetic chromogenic yields of the …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 5, Issue 2, 2019 · pp. 23–33 Read article
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Modelling and Simulation of a Bio-Fermenter for Ethanol Production
Abstract: Industrialization and world population are continuously increasing and this demands high energy. Ethanol is one of the leading bio-fuel in recent years. In this research, mathematical models were developed to monitor, predict and simulate the rate of production of ethanol from the fermentation process of corn. Increase in the ethanol production was observed within the range of 0 >D_S≤0.25 of solvent dilution rate with the optimum value of ethanol concentration …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 7, Issue 1, 2021 · pp. 39–50 Read article
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Review of Silicon Reactivity of Self-assembled monolayer and its Properties
Abstract: In most cases, the assumption of perfect high viscosity between silicon and silver underlies the modelization of silicene on Ag(111). According to recent reports, growth does not take place on top of the Ag(111) terraces, but rather within the first layer of them. In this article, we present the results of a study that combines scanning tunnelling microscopy and density functional theory to simulate the nucleation process and reveal the …
Published in International journal of Thermodynamics and Chemical Kinetics · Vol. 8, Issue 1, 2022 · pp. 29–33 Read article
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Development of Epidermal (TATTOO) Electronic Device with Organic Materials for Tracking Animals
Abstract: The objective of the study is to develop epidermal (tattoo) electronic devices for tracking domestic animals using printed organic complementary technology on flexible substrates with high performance N and P-type organic thin film transistor (OTFT) based on small molecules organic semi-conductor. The tracking device could be used to secure, monitor and locate animals. It is a wellknown fact that most animals live a nomadic life. This however leaves most of …
Published in International Journal of Distributed Computing and Technology · Vol. 8, Issue 1, 2022 · pp. 24–31 Read article
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POWER GENERATION FROM MICROBIAL FUEL CELL
Abstract: Microbial fuel cells (MFCs) give new chances to the practical generation of vitality from biodegradable, decreased mixes. MFCs capacity on diverse starches additionally on complex substrates present in wastewaters. So far there is restricted data accessible about the vitality digestion system and nature of the microorganisms utilizing the anode as electron acceptor; few electron exchange instruments have been built up unequivocally. [3]-[6]. Depending on the operational parameters of the MFC, …
Published in International Journal of Analog Integrated Circuits · Vol. 1, Issue 2, 2015 · pp. 10–16 Read article
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Studies on Molecular Electronics
Abstract: This article is study of molecular electronics to circumvent usual scope, as of, lithographically adjective constitutive proclaim. Molecular electronics has been interdisciplinary study among physics, chemistry, and material science. Ethical has been to unify feature as molecular building block fabricate to assign as electronic components. Lithographic removal of bulk has reticulated synergism under miniature scope scheme i.e., growing individual molecular block by chemical process. Thus, top-down lithography has substitutive apt …
Published in International Journal of Analog Integrated Circuits · Vol. 7, Issue 2, 2021 · pp. 1–4 Read article
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Microstrip Patch Antenna Review for WLAN and WiMAX Application
Abstract: In this fast growing world, dual and multiple band antennas have been playing a very vital role for the wireless service needs in the field of wireless communication. WLAN and WiMAX are the techniques that are broadly used in mobile networks such as handheld computers and smart phones. The above techniques are considered extensively world wide as a cost-effective, flexible, reliable and high speed data connection that enables user mobility. …
Published in International Journal of Broadband Cellular Communication · Vol. 1, Issue 2, 2015 · pp. 8–12 Read article
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DESIGN OF TRUNCATED SQUARE MICROSTRIP ARRAY ANTENNA FOR ENERGY HARVESTING
Abstract: ABSTRACTAn 2X2 array of truncated square microstrip antenna is proposed in this paper. Antenna is designed for energy harvesting. This proposed antenna has a bandwidth for VSWR < 2 from 2.36 to 2.58GHz. A single antenna was designed initially at 2.4GHz, then array of the antenna was designed with the same frequency and results were compared. Four truncated antennas were used in the designing of the proposed antenna, microstrip feed …
Published in International Journal of Broadband Cellular Communication · Vol. 5, Issue 2, 2019 · pp. 10–16 Read article
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A Novel Design of Multiple Band H – Shape Slot Antenna For Radar Communication
Abstract: A compact multiple band patch feed H–shape slot antenna for RADAR application is designed and presented in this paper. The proposed H - shaped slot antenna is built on a FR4 substrate with a length of 32.248 mm and dielectric constant of 4.4, thickness of 3.432 mm, width of 36.51 mm and loss tangent of 0.018. The proposed antenna is designed over a frequency range of 1.0 to 8.0 GHz. …
Published in International Journal of Digital Communication and Analog Signals · Vol. 1, Issue 1, 2015 · pp. 29–35 Read article
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PERFORMANCE COMPARISON OF SIMULATED AND FABRICATED WIDEBAND MINIATURIZED WPD
Abstract: In this paper comparison of result of simulation and fabricated miniaturized Wilkinson Power Divider is proposed. The decay in performance of Wilkinson Power Divider during fabrication process is discussed in detail. Equal splitter Wilkinson Power Divider is designed by using CST MWS software which is very excellent as comparison to other RF design software in present scenario. The fabrication process is adopted by using PCB technology due to ease of …
Published in International Journal of Microelectronics and Digital integrated circuits · Vol. 3, Issue 1, 2017 · pp. 10–14 Read article
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A Novel Leaf Antenna Design for Ultra-Wideband Applications
Abstract: A novel printed leaf structured antenna for ultra-wideband (UWB) applications is designed in HFSS software, obtained results are presented. The radiating surface is cut like leaf shape over FR4 dielectric substrate backed finite ground plane and power is supplied with a 50 Ω microstrip line. The designed antenna operates over impedance bandwidth (2.9–11.6 GHz) for return loss S11 < 10 dB. The antenna also shows omni-directional radiation patterns and good …
Published in International Journal of Microwave Engineering and Technology · Vol. 1, Issue 2, 2015 · pp. 20–24 Read article