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Chinese Chemical Letters 2012年第8期23卷 903-906页

作者： alireza khorshidi Department of Chemistry Faculty of SciencesUniversity of GuilanP.O.Box:41335-1914RashtIran

Selective 3-cyanation of indoles was achieved under heterogeneous catalysis of Ru（III）-exchanged NaY zeolite （RuY） as a recyclable catalyst, in combination with K4[Fe（CN）6] as a nontoxic, slow cyanide releasing ... 详细信息

关键词： Cyanation Indole Zeolite Heterogeneous Catalysis

Ruthenium nanoparticles supported on mesoporous MCM-41 as an efficient and reusable catalyst for selective oxidation of arenes under ultrasound irradiation

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Chinese Journal of Catalysis 2016年第1期37卷 153-158页

作者： alireza khorshidi 桂兰大学理学院化学系

Mesoporous MCM-41 was used as a support for the uniform dispersion of ruthenium nanoparticles having an average particle size of 5 *** obtained nanocomposite,MCM-41-Ru,was characterized using inductively coupled plasma,transmission electron microscopy,energy dispersive X-ray analysis,X-ray diffraction,and BET surface area *** material was employed as an efficient and recyclable catalyst in the ultrasound-assisted oxidation of *** was observed that ultrasound irradiation in combination with KBrO3 as the oxidant,in the presence of MCM-41-Ru nanoparticles,accelerates the oxidation reaction to afford the desired products in good *** recovered catalyst retained activity for successive runs,with a continuous change in the nature of its active sites.

关键词： Nanoparticle Ultrasound Ruthenium Arene oxidation MCM-41

Efficient Ru -catalyzed synthesis of 9-aryl-9H-xanthene-3,6-diols as precursors to fluorones

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Chinese Chemical Letters 2012年第2期23卷 165-168页

作者： Khalil Tabatabaeian alireza khorshidi Ali Dadashi Milad Khoshnood Department of Chemistry Faculty of SciencesUniversity of GuilanP.O.Box 41335-1914Iran

Efficient condensation of resorcinol and various aromatic aldehydes in the presence of RuCl_3nH_2O as a homogeneous catalyst under reflux conditions was *** was found that a very simple method afforded good to excelle... 详细信息

关键词： Aldehyde Resorcinol Ruthenium Xanthenediol Fluorone

Fe_3O_4@MCM-48-OSO_3H磁性核壳纳米粒子催化3,3′-双吲哚高效合成(英文)

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催化学报 2015年第5期36卷 778-784页

作者： alireza khorshidi Shahab Shariati Department of Chemistry Faculty of Sciences University of Guilan Department of Chemistry Rasht Branch Islamic Azad University

Magnetite nanoparticles coated with sulfuric acid-functionalized mesoporous MCM-48 were synthesized and used as a catalyst in three-component domino reactions of indoles, arylglyoxal monohydrates and N-arylenaminones to furnish the desired 3,3′-bisindoles by formation of two C–C and one C–N bonds in a smooth cascade with good yields under mild reaction conditions. The catalyst was recovered easily and maintained activity in successive runs.

关键词：纳米粒子 Fe304 催化合成核壳磁性 MCM-48 反应条件运行维护

Analysis of Linear and Nonlinear Vibrations of Composite Rectangular Sandwich Plates with Lattice Cores

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Computers, Materials & Continua 2025年第1期82卷 223-257页

作者： alireza Moradi alireza Shaterzadeh Faculty of Mechanical Engineering Shahrood University of TechnologyShahroodP.O.Box ***Iran

For the first time,the linear and nonlinear vibrations of composite rectangular sandwich plates with various geometric patterns of lattice core have been analytically examined in this *** plate comprises a lattice core located in the middle and several homogeneous orthotropic layers that are symmetrical relative to *** this purpose,the partial differential equations of motion have been derived based on the first-order shear deformation theory,employing Hamilton’s principle and Von Kármán’s nonlinear displacement-strain ***,the nonlinear partial differential equations of the plate are converted into a time-dependent nonlinear ordinary differential equation(Duffing equation)by applying the Galerkin *** the solution of this equation,the natural frequencies are ***,to calculate the non-linear frequencies of the plate,the non-linear equation of the plate has been solved analytically using the method of multiple ***,the effect of some critical parameters of the system,such as the thickness,height,and different angles of the stiffeners on the linear and nonlinear frequencies,has been analyzed in *** confirmthe solution method,the results of this research have been compared with the reported results in the literature and finite elements in ABAQUS,and a perfect match is *** results reveal that the geometry and configuration of core ribs strongly affect the natural frequencies of the plate.

关键词： Free vibration composite sandwich plate lattice core galerkin method Duffing equation multiple scales method

A new approach for correlating of H_(2)S solubility in[emim][Lac],[bmim][ac]and[emim][pro]ionic liquids using two-parts combined models

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Chinese Journal of Chemical Engineering 2022年第4期35卷 521-527页

作者： alireza Afsharpour Faculty of Chemical and Materials Engineering Shahrood University of TechnologyShahroodIran

Two bi-part combined models containing reaction equilibrium thermodynamic model and an equation of state(EoS)including cubic plus association(CPA)or modified Soave-Redlich-Kwong(SRK),were employed to correlate H_(2)S solubility in ionic liquids[emim][Lac],[bmim][Ac]and[emim][Pro].RETM and CPA/mSRK are responsible for chemical and phase equilibria calculations,*** RETM defines a complex formation reaction between an H_(2)S and two IL molecules into the liquid phase so that a complex in the form of H_(2)S(IL)_(2)is probable to *** the other side,CPA/mSRK EoSs perform phase equilibria computations to find pressure and vapor phase *** the case of CPA,both of H_(2)S and the ionic liquids were considered as self-associating components which pursue 4 C and 2 B schemes,*** model computes the pure IL parameters using experimental density *** this work,critical properties were estimated through the modified Lydersen-Joback-Reid method,Eotvos and Guggenheim ***,the binary systems were investigated by applying *** presents average absolute deviations(AADs)equal to 2.41%,13.42%and 3.52%for[emim][Lac],[bmim][Ac],and[emim][Pro],***,the AADs obtained by mSRK are 3.75%,5.07%,and 6.06%,*** it is evident from the results,the combination of RETM with both CPA and m SRK EoSs will result in good correlation accuracy.

关键词： Solubility Thermodynamics Ionic liquids CPA RETM mSRK

Progressive collapse resisting capacity of reinforced concrete load bearing wall structures

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Journal of Central South University 2015年第7期22卷 2730-2738页

作者： alireza Rahai alireza Shahin Farzad Hatami Department of Civil Engineering Amirkabir University of Technology (Tehran Polytechnic) No.424 Structural & Earthquake Research Center (SERC) Amirkabir University of Technology No.424

Reinforced concrete(RC) load bearing wall is widely used in high-rise and mid-rise buildings. Due to the number of walls in plan and reduction in lateral force portion, this system is not only stronger against earthquakes, but also more economical. The effect of progressive collapse caused by removal of load bearing elements, in various positions in plan and stories of the RC load bearing wall system was evaluated by nonlinear dynamic and static analyses. For this purpose, three-dimensional model of 10-story structure was selected. The analysis results indicated stability, strength and stiffness of the RC load-bearing wall system against progressive collapse. It was observed that the most critical condition for removal of load bearing walls was the instantaneous removal of the surrounding walls located at the corners of the building where the sections of the load bearing elements were changed. In this case, the maximum vertical displacement was limited to 6.3 mm and the structure failed after applying the load of 10 times the axial load bored by removed elements. Comparison between the results of the nonlinear dynamic and static analyses demonstrated that the "load factor" parameter was a reasonable criterion to evaluate the progressive collapse potential of the structure.

关键词： reinforced concrete(RC) load bearing wall structure progressive collapse fiber sections nonlinear analysis load factor method

A Numerical Approach for Multicomponent Vapor Solid Equilibrium Calculations in Gas Hydrate Formation

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Journal of Natural Gas Chemistry 2007年第1期16卷 16-21页

作者： alireza Bahadori Department of Petroleum Engineering National Iranian South Oil Co.AhwazP.O.Box 61735-1338Iran

A new numerical approach has been developed for vapor solid equilibrium calculations and for predicting vapor solid equilibrium constant and composition of vapor and solid phases in gas hydrate formation. Equation of state methods generally do a good job of determining vapor phase properties, but for solid phase it is much more difficult and inaccurate. This proposed new model calculates vapor solid equilibrium constant and vapor and solid phase composition as a function of temperature and partial pressure. The results of this proposed numerical approach, for vapor solid equilibrium, have a good agreement with the available reported data. This new numerical model also has an advantage to tune coefficients, to cover different sets of experimental data accurately.

关键词： numerical model vapor solid equilibrium hydrate multicomponent system

Effect of inlet temperature and equivalence ratio on HCCI engine performance fuelled with ethanol:Numerical investigation

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Journal of Central South University 2016年第1期23卷 122-129页

作者： alireza Rahbari Department of Mechanical Engineering Shahid Rajaee Teacher Training University (SRTTU)

A numerical model is presented to investigate the performance of homogeneous charge compression ignition(HCCI) engines fueled with ethanol. Two approaches are studied. On one hand, two-step reaction mechanisms with Arrhenius reaction rates are implemented in combustion chemistry modeling. On the other hand, a reduced mechanism containing important reactions of ethanol involving heat release rate and reaction rates compatible with experimental data is employed. Since controls of combustion phenomenon and ignition timing are the main issues of these engines, the effects of inlet temperature and equivalence ratio as the controlling factors on the operating parameters such as ignition timing, burn duration, in-cylinder temperature and pressure of HCCI engines are explored. The results show that the maximum predicted pressures for thermodynamic model are about 71.3×10~5 Pa and 79.79×10~5 Pa, and for chemical kinetic model, they are about 71.48×10~5 Pa and 78.123×10~5 Pa, fairly comparable with corresponding experimental values of 72×10~5 Pa and 78.7×10~5 Pa. It is observed that increasing the initial temperature advances the ignition timing, decreases the burn duration and increases the peak temperature and pressure. Moreover, the maximum temperature and pressure are associated with richer mixtures.

关键词： HCCI engine ethanol two-step reaction mechanism model chemical kinetic model

A new artificial bee swarm algorithm for optimization of proton exchange membrane fuel cell model parameters

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Journal of Zhejiang University-Science C(Computers and Electronics) 2011年第8期12卷 638-646页

作者： alireza ASKARZADEH alireza REZAZADEH Faculty of Electrical and Computer Engineering Shahid Beheshti University

An appropriate mathematical model can help researchers to simulate,evaluate,and control a proton exchange membrane fuel cell (PEMFC) stack *** a PEMFC is a nonlinear and strongly coupled system,many assumptions and approximations are considered during ***,some differences are found between model results and the real performance of *** increase the precision of the models so that they can describe better the actual performance,opti-mization of PEMFC model parameters is *** this paper,an artificial bee swarm optimization algorithm,called ABSO,is proposed for optimizing the parameters of a steady-state PEMFC stack model suitable for electrical engineering *** studying the usefulness of the proposed algorithm,ABSO-based results are compared with the results from a genetic algo-rithm (GA) and particle swarm optimization (PSO).The results show that the ABSO algorithm outperforms the other algorithms.

关键词： Proton exchange membrane fuel cell stack model Parameter optimization Artificial bee swarm optimization algorithm