Sharif University of TechnologyScientia Iranica1026-309823620161201CuFe2O4 and ZrP2O7 nanoparticles as highly efficient catalysts for the one-pot synthesis of phthalazine derivatives under solvent-free conditionsCuFe2O4 and ZrP2O7 nanoparticles as highly efficient catalysts for the one-pot synthesis of phthalazine derivatives under solvent-free conditions27052716397910.24200/sci.2016.3979ENJ.Safaei-GhomiDepartment of Organic Chemistry, Faculty of Chemistry, University of Kashan, Kashan, P.O. Box 87317-51167, Kashan, Iran.0000-0002-9837-4478A.HatamiDepartment of Organic Chemistry, Faculty of Chemistry, University of Kashan, Kashan, P.O. Box 87317-51167, Kashan, Iran.H.Shahbazi-AlaviDepartment of Organic Chemistry, Faculty of Chemistry, University of Kashan, Kashan, P.O. Box 87317-51167, Kashan, Iran.A.ZiaratiSchool of Chemistry, College of Science, University of Tehran, Tehran 14155-6455, IranJournal Article20161226ZrP2O7 and CuFe2O4 nanoparticles as ecient and reusable heterogeneous catalysts have been used for the preparation of 2H-indazolo[2,1-b]phthalazine-triones and 1H-pyrazolo[1,2-b]phthalazine-diones, respectively, under solvent-free conditions in good to excellent yields and short reaction times.https://scientiairanica.sharif.edu/article_3979_a58616464d14208b2677a084f5d7456f.pdfSharif University of TechnologyScientia Iranica1026-309823620161201An Efficient One-pot Three-component Synthesis of Pyrido[2,3-d]pyrimidine Derivatives in the Presence of Nano Silica-supported Preyssler H14[NaP5W30O110]/SiO2 as a Green and Reusable CatalystAn Efficient One-pot Three-component Synthesis of Pyrido[2,3-d]pyrimidine Derivatives in the Presence of Nano Silica-supported Preyssler H14[NaP5W30O110]/SiO2 as a Green and Reusable Catalyst27172723398010.24200/sci.2016.3980ENBehnoushAlimadadiDepartment of Chemistry, School of Sciences, Alzahra University, P.O. Box 1993891176, Vanak, Tehran, IranMajidM HeraviDepartment of Chemistry, School of Sciences, Alzahra University, P.O. Box 1993891176, Vanak, Tehran, IranNioushaNazariDepartment of Chemistry, School of Sciences, Alzahra University, P.O. Box 1993891176, Vanak, Tehran, IranHosseinAbdi OskooieDepartment of Chemistry, School of Sciences, Alzahra University, P.O. Box 1993891176, Vanak, Tehran, IranFatemehF BamoharramDepartment of Chemistry, Islamic Azad University-Mashhad Branch, Mashhad, IranJournal Article20160607An efficient and mild condensation reaction of 6-aminouracil derivatives with various aromatic aldehydes and ethyl or methyl acetoacetate was performed in the presence of catalytic amounts of H14[NaP5W30O110]/SiO2 as a recyclable, eco-friendly and green nano-catalyst to afford the desired pyrido[2,3-d]pyrimidine derivatives in good to excellent yields.https://scientiairanica.sharif.edu/article_3980_9425be43ba92c2b4454ca7bf602efad8.pdfSharif University of TechnologyScientia Iranica1026-309823620161201MCM-41-SO3H-catalyzed synthesis of highly substituted 3-amino-imidazo[1,2-a]pyridines or pyrazines via the Groebke-Blackburn-Bienaymé multicomponent reaction under grinding conditions at ambient temperatureMCM-41-SO3H-catalyzed synthesis of highly substituted 3-amino-imidazo[1,2-a]pyridines or pyrazines via the Groebke-Blackburn-Bienaymé multicomponent reaction under grinding conditions at ambient temperature27242734398110.24200/sci.2016.3981ENMaryamNaeim-AbadiShahrzadJavanshirAliMalekiMohammad G.DekaminJournal Article20151115Environmentally-friendly and highly efficient method has been developed by a sequential one-pot, three-component reaction between isocyanides, aldehydes and 2-aminopyridines or 2 aminopyrazines under solvent-free and grinding- conditions at room temperature in the presence of nano-ordered MCM-41-SO3H.https://scientiairanica.sharif.edu/article_3981_1bda4c789c38754f639a376716c5859f.pdfSharif University of TechnologyScientia Iranica1026-309823620161201Study of the BZ oscillating system in the presence of silica nanoparticles containing NiO using a new approach: ConductometryStudy of the BZ oscillating system in the presence of silica nanoparticles containing NiO using a new approach: Conductometry27352741398210.24200/sci.2016.3982ENAbdolraoufSamadi-MaybodiFaculty of Chemistry, University of Mazandaran, Babolsar, IranAmirVahidResearch institute of petroleum industry, Tehran, IranSaharBaniyaghoobIslamic Azad University, Science and Research Branch, Tehran, IranJournal Article20161001Oscillating chemical reactions are complex systems involving a large number of chemicalspecies such as ionic, radical and molecular intermediates, which exhibit fluctuation in their concentration with time. One of the oscillating chemical reactions is BZ {---}System. In this work for the first time a new, simple and appropriate method, i.e.conductometry, have applied for the investigation of BZ oscillating system.Furthermore, presence of SiO2 nanoparticles containing NiO apparently affected the intensity and period of BZ system. The effect of varying concentrationof , , and on the conductance of BZ oscillating chemical system at 20 (±0.1)°C was also investigated. The obtained results of this work indicated that rather than potential and color of the BZ system, the conductance of system is also oscillates during the reaction and is also proportional to the reactants concentration as well. The intensity, intensity and period of the oscillation are strongly depending on the concentration of reactants.https://scientiairanica.sharif.edu/article_3982_a0443c8c8c3372d662e9173c18faaa2c.pdfSharif University of TechnologyScientia Iranica1026-309823620161201Copper-catalyzed N-arylation of heterocycles in ethylene glycol mediumCopper-catalyzed N-arylation of heterocycles in ethylene glycol medium27422749398310.24200/sci.2016.3983ENA.SharifiChemistry and Chemical Engineering Research Center of Iran, P.O.Box 14335-186, Tehran, IranM.MoazamiChemistry and Chemical Engineering Research Center of Iran, P.O.Box 14335-186, Tehran, IranN.GhonoueiChemistry and Chemical Engineering Research Center of Iran, P.O.Box 14335-186, Tehran, IranM.S.AbaeeChemistry and Chemical Engineering Research Center of Iran, P.O.Box 14335-186, Tehran, IranM.MirzaeiChemistry and Chemical Engineering Research Center of Iran, P.O.Box 14335-186, Tehran, IranJournal Article20160607N-Aarylation of imidazole, benzimidazole, pyrazole, and indole was performed in the presence of CuI as the catalyst and NaOH as the base in ethylene glycol medium. Apparently, ethylene glycol played a dual role as both the reaction solvent and a ligand for the catalyst. All reactions proceeded selectively to give the corresponding N-arylated products. In some cases, O-alkylation or dehalogenation was observed which was explained by the proposed catalytic cycle. Conventional heating at 120 oC and microwave irradiation both were used, where the results showed that microwave irradiation could facilitate the reaction by lowering the reaction times and increasing the yields. The reaction medium was recovered and reused in several consecutive runs. https://scientiairanica.sharif.edu/article_3983_5e4450dc93010bbeea7cd28eba296850.pdfSharif University of TechnologyScientia Iranica1026-309823620161201Greenersynthesisof magnetic nanoparticles in an aqueous deepeutectic solventGreenersynthesisof magnetic nanoparticles in an aqueous deepeutectic solvent27502755398410.24200/sci.2016.3984ENNajmadinAziziDepartment of Biology and Environment, Parand Branch, Islamic Azad University, Parand, IranMahtabEdrisiDepartment of Biology and Environment, Parand Branch, Islamic Azad University, Parand, IranZohrehManochehriDepartment of Biology and Environment, Parand Branch, Islamic Azad University, Parand, IranJournal Article20161109The simple method of fabrication of crystalline superparamagnetic nanoferrite (Fe3O4) particles using oxidative hydrolysis of Fe (II) salt in deep eutectic solvent-water mixture is being reported. The spectral properties of Fe3O4 nanoparticles were characterized by Fourier Transform Infrared (FTIR) spectroscopy while X-Ray diffraction (XRD) as well as scanningelectron microscopy (SEM) techniques were used to estimate the crystalline structure and particle size. The results of the studies revealed that this technique could be adopted to synthesize agglomerate-free superparamagnetic Fe3O4 nanoparticles in the simple manner in deep eutectic solvent which may find potential application in the biosensor and corrosion protective coatings. https://scientiairanica.sharif.edu/article_3984_7059b7dea43da04fd342088d7c1698f0.pdfSharif University of TechnologyScientia Iranica1026-309823620161201Synthesis of 1, 4-dihydropyridines (DHP) Catalyzed by Trichloroisocyanuric Acid (TCCA) in Aqueous MediaSynthesis of 1, 4-dihydropyridines (DHP) Catalyzed by Trichloroisocyanuric Acid (TCCA) in Aqueous Media27562761398510.24200/sci.2016.3985ENMarziyehRoknaddiniEnayatollahSheikhhosseiny-0000-0003-2973-9768Journal Article20151115An array of 1, 4-dihydropyridines (DHP) derivativeswas synthesized by Hantzsch three-component reaction of aromatic aldehydes, ethyl acetoacetate and ammonium acetate using trichloroisocyanuric acid (TCCA) as an efficient catalyst in aqueous media. The proposed method was operationally simple and to make the process benign for the environment, water used as a reaction medium. No aromatization of dihydropyridinesproducts was done in the presence of TCCA as an oxidant.https://scientiairanica.sharif.edu/article_3985_0c2f66f43752d47fb49abeea0badf47a.pdfSharif University of TechnologyScientia Iranica1026-309823620161201Application of conformal mapping to the scattering of plane SH-waves by a cavityApplication of conformal mapping to the scattering of plane SH-waves by a cavity27632770398610.24200/sci.2016.3986ENWeiChenCNPC Key lab of Geophysical exploration, China University of Petroleum, Beijing ChinaShangxuWangCNPC Key lab of Geophysical exploration, China University of Petroleum, Beijing ChinaJournal Article20160607In seismic numericalmodelling, it is readilyto simulate the wave field of the cavities with simpleandregular geometric boundaries. However, the real cavities are always complex or irregular, such asgeneral quadrilateral orhorny model. In this paper, conformal mapping is applied to three representative cavity models, including a pentagon model, a generalized quadrangular model and a horny model. First of all, transform the original cavity modelinthephysical domain into certain simple regularmodelin the computational domain and accordingly transform the boundary condition inthephysical domain into that in the computational domain. Thencalculate the wave field on the boundary in the computational domain. Finally, we generate the wave field on the boundary in the physical domain by usingthe inverse conformal mapping,when the conformal mappingfunctionis invertible. Twoexperiments by adoptingeither a displacement boundarycondition or a stress boundary conditionillustratethat the wave fields for three different kinds of cavitiesmainly concentrate on the boundary of the corresponding cavity.https://scientiairanica.sharif.edu/article_3986_540393ae7f8b7a7fd6cdf47250b05679.pdfSharif University of TechnologyScientia Iranica1026-309823620161201Heat transfer analysis in peristaltic slip flow with Hall and ion-slip currentsHeat transfer analysis in peristaltic slip flow with Hall and ion-slip currents27712783398710.24200/sci.2016.3987ENQumarHussainCOMSATS Institute of Information TechnologySaleemAsgharAhmadAlsaediJournal Article20150109This work is devoted to the study of heat transfer effects in peristaltically induced flow of an electrically conducting viscous fluid in an asymmetric channel. An incompressible fluid fills the porous space in a channel. Analysis is made in the presence of Hall and ion-slip effects. The effects of velocity and thermal slips at the boundaries are considered. The problems which govern the fluid flow and heat transfer are modeled in the wave frame of reference. Exact solutions have been constructed under realistic assumptions. Important features of peristaltic motion and heat transfer are studied with the varying values of Hall parameter, ion-slip parameter, Hartman number, permeability parameter, velocity slip parameter and thermal slip parameter. The graphical results for the field quantities are given in detail.https://scientiairanica.sharif.edu/article_3987_4f9c76cf97f84048c5990dd4ef842ea2.pdfSharif University of TechnologyScientia Iranica1026-309823620161201Preparation, adhesion and barrier properties of bituminous composite coatings on steel 37 Preparation, adhesion and barrier properties of bituminous composite coatings on steel 37 27842790398810.24200/sci.2016.3988ENH.R.ZamanizadehImanDanaeeAbadan Faculty of Petroleum Engineering, Petroleum University of TechnologyM.R.ShishesazD.ZareiJournal Article20150311A series of bitumen/nano clay nanocomposite have been prepared through solvent intercalation technique by using mechanical agitation and sonication process. The structure of nanocomposite coatings was investigated by TEM, low angle X-ray diffraction and Fourier-transform infrared spectroscopy. To investigate barrier properties of nanocomposite coatings, polarization, salt fog test and pull-off adhesion tests have been employed. The results showed that bitumen/MMT nanocomposite coatings were superior to the pristine bitumen coating in corrosion protection effects. Also, it was observed that the corrosion protection of bitumen/clay nanocomposite coatings improved as the clay loading is increased up to 4 wt.%https://scientiairanica.sharif.edu/article_3988_bbbe7ef28a0018c4484eaa8b2d0a0328.pdfSharif University of TechnologyScientia Iranica1026-309823620161201Petroleum refinery wastewater treatment in two-chamber microbial fuel cells (MFCS)Petroleum refinery wastewater treatment in two-chamber microbial fuel cells (MFCS)27912799398910.24200/sci.2016.3989ENMehdiBagheri EsfeEsfahan University of TechnologyHamedBagheri EsfeAmirkabir University of TechnologyJournal Article20150519Petroleum refinery wastewaters (PRW) contain water-soluble hydrocarbons which can not be separated by physical methods. In recent years, there have been enormous approaches to treat PRW. The most outstanding methods involve biological, photocatalytic, electro photo-Fenton and etc. Using microbial fuel cell is a new method to treat PRW. In the present paper, treatment of petroleum wastewater of Isfahan refinery (COD= 213.9 mg/l, PH=7.1) was investigated in twochamber microbial fuel cell having 350 mL anode and cathode capacity. Anaerobic activated sludge prepared from Isfahan refinery treatment reactors was used as inoculum. Maximum power production was 0.03 W/m2 at 33 using oxygen as cathodic electron acceptor. Also COD removal efficiency was 49.27% during 44 hr. To enhance power production of the MFC, potassium permanganate was used as cathodic electron acceptor. At temperature of 33 and 0.2 g/l permanganate concentration, the maximum power density was 0.95 W/m2 and COD removal efficiency was 78% during 44hr. Then effect of temperature and external resistance on treatment of PRW was investigated. In fact the motivation of this paper is investigation of COD removal from PRW in two-chamber MFC.https://scientiairanica.sharif.edu/article_3989_6516c28727509c3db6280ae16254e916.pdfSharif University of TechnologyScientia Iranica1026-309823620161201α-C2SH synthesis in the mixtures with CaO/SiO2 = 1.5 and application as a precursor for binder materialα-C2SH synthesis in the mixtures with CaO/SiO2 = 1.5 and application as a precursor for binder material28002810399010.24200/sci.2016.3990ENKestutisBaltakysKaunas University of TechnologyTadasDambrauskasKaunas University of TechnologyAnatolijusEisinasKaunas University of TechnologyRaimundasSiauciunasKaunas University of TechnologyJournal Article20150922The hydration and strength properties of the binder material created on α-C2SH basis were determined. The binder material was prepared by mixing α-C2SH (C/S = 1.5; 16 h, 200 oC) and quartz sand (1:1 by mass) in a homogeniser for 30 min. Later on, sample was ground in a vibrating cup mill at 950 rpm for 4 min and burned at 450 oC for 30 min under air atmosphere. It was determined that calorimetric curve of created binder material differs from the one of ordinary cements as it involves only the three exothermic reactions and the amount of total cumulative heat grows with the increasing hydration time. As expected, the tendency of strength increment was observed after 7-28 days of hardening: compressive strength increased to 15.5 and 24.0 MPa, respectively. The products of synthesis and hardening were characterized by powder X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FT-IR) and simultaneous thermal analysis (STA).https://scientiairanica.sharif.edu/article_3990_7612936dcc85282c6fa4dd9d4ffe57f1.pdfSharif University of TechnologyScientia Iranica1026-309823620161201Impact of natural convection and diffusion on variation of oil composition through a fractured modelImpact of natural convection and diffusion on variation of oil composition through a fractured model28112819399110.24200/sci.2016.3991ENAliPapiAliMohebbiShahid Bahonar University of Kerman0000-0002-2303-7231YousefKazemzadehSeyed EhsanEshraghiJournal Article20151223The first step to study oil reservoirs is determination of reservoir fluid composition in both horizontal and vertical directions. In this research, fluid composition distribution is investigated as a result of diffusion and natural convection in a naturally fractured model. A two-component single phase fluid and a rectangular two-dimensional fractured oil reservoir with a known temperature profile are used in this study. MATLAB software is exploited to solve governing equations, numerically. According to results, thermal diffusion has the greatest impact on the variation of fluid composition, followed by pressure and molecular diffusions, respectively. Moreover, it is found out that even a small convection would change the fluid composition distribution, considerably. Fluids tend to flow through the fracture due to its high permeability; therefore, a counterclockwise convective cell would flow in the reservoir.https://scientiairanica.sharif.edu/article_3991_dfbd282c18300fa0eccceea6c5fac41f.pdfSharif University of TechnologyScientia Iranica1026-309823620161201Influence of the Process Parameters on the Foam Fractionation Treatment of Olive Mill Wastewater Influence of the Process Parameters on the Foam Fractionation Treatment of Olive Mill Wastewater 28202827399210.24200/sci.2016.3992ENSinaMatavos-AramyanDepartment of Chemical and Materials Engineering, Shiraz Branch, Islamic Azad University, Shiraz, IranMahdieGhazi-MirSaeedAliSaeedi-EmadiMohammadNematiSamanehNeysariJournal Article20150519Olive mill wastewater (OMW) is a high organic load waste produced from the three-phase decanter system used in the processing of olives for oil that has phytotoxic and antibacterial phenolic compounds, which makes this waste to resist biological degradation. Foam fractionation has not yet been studied with regard to its potential for treatment of such wastewaters. In the present study, this technique was investigated in a simple model system. The effect of different operational conditions, namely, surfactant concentration, process time, pH and gas flow rate were evaluated in this study. Statistical analysis of the fractional factorial design revealed that the surfactant concentration, pH and the gas flow rate are the most influential process parameters. Low surfactant concentration and pH of 3-4 were found to be advantageous in terms of good chemical oxygen demand (COD) removal. More than 80% of COD was removed through a single stage foam fractionation process. This method has proved to be a feasible technique for the OMW effluent treatment. https://scientiairanica.sharif.edu/article_3992_0de5d1a081a3095d62b416e44e055e7a.pdf