Volume 22, Issue 3
مرور بر اساس
ارسال های اخیر
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Adsorption of Phenol Compounds by Nanoporous Silica Aerogel
(Sharif University of Technology, 2015-06-01)Phenolic compounds are important environmental pollutants that removing and separating them from the water and industrial wastewater, especially in the oil industry, are essential before entering the environment. At present ...
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An Improved Mathematical Model for Mass Transfer in Fractured Reservoirduring Gas Injection Process
(Sharif University of Technology, 2015-06-01)In fractured reservoirswith relativelylow matrix permeability, i.e. small matrix block size with respect to capillary threshold height, diffusionbecomes an important recovery mechanism. In this work, we have attemptedto ...
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Nonlinearity Assessment of Chemical Processes
(Sharif University of Technology, 2015-06-01)One of the most important issues in controller design and analysis of a nonlinear system is the degree of nonlinearity in the system. Helbig et al. proposed a method in which the system along with a linear reference model ...
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Efficient synthesis of highly substituted pyrroles via a multi-component reaction using ZnO nanoparticles as a nanocatalyst
(Sharif University of Technology, 2015-06-01)Aconvenient one-pot multi-component reaction of aromatic aldehydes, 1,3-dicarbonyl compounds, amine and nitromethane in the presence of 10 mol % ZnO nanoparticles for the synthesis of highly substituted pyrroles is described. ...
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Mathematical Modeling of Platinum and Chlorine Distributions within Pt-Sn/Al2O3 Catalyst Prepared by Impregnation
(Sharif University of Technology, 2015-06-01)A mathematical model for the impregnation step in the preparation of supported catalysts was developed. The kinetic parameters required for model solution were obtained by considering reversible competitive adsorption of ...
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An efficient and improved method in the synthesis of 14-alkyl and 14aryl14Hdibenzo [a,jxanthenesusing 1-butyl-3-methyl imidazolium phosphotungstateas catalyst under solvent free condition
(Sharif University of Technology, 2015-06-01)1-Butyl-3-methyl imidazolium phosphotungstate was used successfully as a mild catalyst in the synthesis of 14-ethyl and various 14-aryl-14H-dibenzo [a,j]xanthenes derivatives via condensation reaction of acetaldehyde and ...
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Synthesis of (Zβ-bromostyrenes from cinnamic acid derivatives through debrominative decarboxylation of dibromoaryl propanoic acids using KF/Al2O3
(Sharif University of Technology, 2015-06-01)An efficient method for the stereoselective synthesis of (Z)-1-bromo-1-alkenes through debrominative decarboxylation of anti-2,3-dibromoalkanoic acids using KF/Al2O3 is described. KF/Al2O3 showed to be an effective base ...
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An efficient synthesis of tetrahydrotetrazolo[1,5-a]quinazoline derivatives by a three-component reaction of 5-aminotetrazole, arylaldehydes, and dimedone
(Sharif University of Technology, 2015-06-01)A series of tetrahydrotetrazolo[1,5-a]quinazoline derivatives were prepared by the three-component condensation reaction of 5-aminotetrazole (5-AT), benzaldehydes, and dimedone in the presence of p-toluenesulfonic acid ...
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Nano-magnetite as an Eco-friendly and Magnetically Separable Catalyst for a One-pot Synthesis of Pyrano [2, 3-c]pyrazoles and Bis(4-hydroxycoumarin-3-yl)methane Derivatives
(Sharif University of Technology, 2015-06-01)A facile and environmentally benign procedure for the synthesis of pyranopyrazoles and biscoumarin derivatives, using non-toxic and magnetically separable catalyst in water as green solvent, is reported.
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Triarylimidazoles as potent antiwear agents: Eco-friendly synthesis and materialistic approach
(Sharif University of Technology, 2015-06-01)The load-carrying capacity and wear properties of selected triaryl substituted imidazoles were evaluated using a four-ball test machine. These derivatives show better antiwear performance in comparison to para n oil alone, ...
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Fe2+supported on hydroxyapatite-core-shell-γ-Fe2O3nanoparticles: As a novel, efficient and magnetically-recoverable catalyst for the synthesis of dihydropyrimidinones derivatives
(Sharif University of Technology, 2015-06-01)Fe2+supported on hydroxyapatite- core-shell magnetic γ-Fe2O3 nanoparticles (γ-Fe2O3@HAp-Fe2+ NPs) is reported as a novel, efficient, reusable and heterogeneous catalyst. In this protocol, we used this catalyst for the ...
