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American Journal of Analytical Chemistry 2012年第6期3卷 437-442页

作者： reza emamali.sabzi.abbas ni.oo Yaser nikzad Morteza Bahram Karim Akbari Naser Samadi Department of Chemistry Faculty of Science Urmia University Urmia Iran

In this work, the synthesis and complexation properties of a new compound, 1,3-bis[5-(2-hydroxyphenyl)-4-phenyl- 1,2,4-triazole-3-yl-thio]propane (BTP), towards certain transition metal ions, (M(II) where M = Zn, Cu, ni) in acetonitrile is reported. A hard-modeling strategy was applied to UV-Visible spectroscopy data obtained from monitoring the reaction between BTP and the selected metal ions to determine the concentration profiles of each species and the corresponding stability constant(s) of the complex(es). The stability constants of complexes are always defined in terms of their free metal, free ligand and complexed forms. These constants are influenced by parameters such as the type of metal, ligand, counterion or solvent. In this study, the formation constants of the complexes were determined for the synthesized ligand with several metallic cations in acetonitrile solvent by UV-Vis spectrophotometry.

关键词： Zn(II) Cu(II) and ni(II) Complexes Triazole Ligand Spectrophotometry

Hot compression deformation behavior of AISI 321 austenitic stainless steel

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International Journal of Minerals,Metallurgy and Materials 2013年第6期20卷 529-534页

作者： Mehdi Haj Hojjatollah Mansouri reza Vafaei Golam reza Ebrahimi Ali Kanani Department of Materials Engineering Malek Ashtar University of Technology Department of Materials and Polymer Engineering Faculty of Engineering Hakim Sabzevari University

The hot compression behavior of AISI 321 ll00~C and the strain rates of 0.01-1 s-1 using a Baehr austenitic stainless steel was studied at the temperatures of 950- DIL-805 deformation dilatometer. The hot deformation equations and the relationship between hot deformation parameters were obtained. It is found that strain rate and deformation temperature significantly influence the flow stress behavior of the steel. The work hardening rate and the peak value of flow stress increase with the decrease of deformation temperature and the increase of strain rate. In addition, the activation energy of deformation （Q） is calculated as 433.343 kJ/mol. The microstructural evolution during deformation indicates that, at the temperature of 950~C and the strain rate of 0.01 s-1, small circle-like precipitates form along grain boundaries; but at the temperatures above 950~C, the dissolution of such precipitates occurs. Energy-dispersive X-ray analyses indicate that the precipitates are complex carbides of Cr, Fe, Mn, ni, and Ti.

关键词： austenitic stainless steel deformation constitutive equations microstructural evolution activation energy

Microstructure,mechanical properties and corrosion behavior of Al-Si-Cu-Zn-X(X=Bi,Sb,Sr) die cast alloy

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Transactions of Nonferrous Metals Society of China 2016年第1期26卷 28-38页

作者： Saeed FARAHANY Ali OURDJ1ni Hamid reza BAKHSHESHI-RAD Department of Materials and Mechanical Engineering Buein Zahra Technical UniversityQazvin 345 1745346Iran Department of Mechanical Engineering Faculty of EngineeringUniversity of OttawaOttawa161 Louis PasteurKIN 6N5Canada Department of Materials Manufacturing and Industrial EngineeringFaculty of Mechanical EngineeringUniversiti Teknologi Malaysia(UTM)Johor Bahru 81310Malaysia

The microstructure evolution, mechanical and corrosion properties of Al-11Si-2Cu-0.8Zn die cast alloy treated with Bi, Sb and Sr additions were investigated. The results of mechanical testing showed that all additions increased impact toughness, ultimate tensile strength, and elongation of the alloy as a result of change in eutectic Si morphology. The analysis of fracture surfaces revealed that with addition of Sr and to lesser extent Bi and Sb, the alloy exhibited a predominantly ductile fracture rather than quasi-cleavage brittle fracture. Moreover, with the additions of Sr, Bi and Sb, the quality index increased to 164.7 MPa, 156.3 MPa and 152.6 MPa respectively from 102 MPa for the base alloy. Polarization corrosion tests conducted in sodium chloride solution showed that the corrosion potential shifted to more negative values with additions of Sb, Bi and Sr, respectively. Corrosion immersion tests also revealed that the element additions have a detrimental effect on the corrosion rate of alloys, due to the increase of boundaries between the Al and eutectic Si phases.

关键词： aluminium die cast alloy melt treatment mechanical properties fracture corrosion

Application of nickel（Ⅱ） Thiosemicarbazone Supported on Nano Porous Silica as a Catalyst for Selective Oxidation of Alcohols

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材料科学与工程（中英文B版） 2011年第6期1卷 759-765页

作者： Mohammad Hakimi reza Takjoo abbas Gholami Taymaz Tabari Department of Chemistry Payame Noor University Tehran 19395-4697 Iran Department of Chemistry School of Sciences Ferdowsi University of Mashhad Mashhad 91775-1436 Iran Department of Chemistry Faculty of Sciences Islamic Azad University Gorgan Branch Iran

Predicting non-carcinogenic hazard quotients of heavy metals in pepper (Capsicum annum L.) utilizing electromagnetic waves

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Frontiers of Environmental Science & Engineering 2020年第6期14卷 237-249页

作者： Marzieh Mokarram Hamid reza Pourghasemi Huichun Zhang Depatment of Range and Watcrshed Managemcent Cllge of Ariculut and Naturel Resures of Darab Shiraz UnivrsityShiraz 71946-84471Iran Depatment of Natural Resources and Enionmental Enginerng Cllge of Agicuture Shiraz UniversityShirz 7141-6586 Iran Depatment of Civil and Environmental Engiccrin Case Westem Reseve Univrsit Cleveland0H 44106USA

Given the tendency of heavy metals to accumulate in soil and plants,the purpose of this study was to determine the *** of Cd,ni,Pb,and Zn on peppers(*** fruit),grown in contaminated soils in industral *** this purpose,we measured the uptake of the four heavy metals by peppers grown in the heavy metal contaminated soils throughout the four growth stages:two-leaf,growth,fiowering,and fruiting;and calculated various vegetation indices to evaluate the heavy metal contamination *** waves were also applied for analyzing the responses of the target plants to various heavy *** on the relevant spectral bands identified by principal component analysis(PCA)and random search methods,a regression method was then *** determine the most *** bands for estimating,the target hazard quotient(THQ).The THQ was found to be the highest in the plants contaminated by Pb(THQ=62)and Zn(THQ=5.07).The results of PCA and random search indicated that the spectra at the bands of b570,b650,and b760 for Pb,b400 and b880 for ni,b560 and b880 for Cd,and b560 b910,and b1050 for Zn were the most optimal spectra for assessing ***,in future studies,instead of examining the amount of heavy metals in plants by chemical analysis in the laboratory,the responses of the plants to the electromagnetic waves in the identified bands can be redily investigated in the field based on the established correlations.

关键词： Heavy metals Plants Target Hazard Quotient(THQ) Principal Component Analysis(PCA) Random search Electromagnetic wave

One-step synthesis of ni@Pd/NH_(2)-Fe_(3)O_(4)nanoparticles as affordable catalyst for formic acid dehydrogenation

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Chinese Journal of Chemical Engineering 2021年第4期34卷 168-174页

作者： Mohammad reza Nabid Yasamin Bide Mahsa Jafari Department of Polymer&Material Chemistry Faculty of Chemistry&Petroleum ScienceShahid Beheshti UniversityTehran ***Iran

Currently,one of the critical issues in the world is finding an appropriate green alternative to fossil fuels due to the concerns about global *** a hydrogen source,formic acid has been given particular attention owing to the attractive features such as highenergy density,no toxicity,high stability at ambient temperature and high hydrogen *** an affordable and highly efficient catalyst with easy recovery from the reaction mixture for selective dehydrogenation of formic acid is still *** this report,we used a simple onestep process to synthesize ni@Pd core shell nanoparticles on 3aminopropyltriethoxysilane modified Fe3O4 *** existence of ni and Pd results in a synergic effect on the catalytic ***—NH2 groups play an important role for obtaining welldispersed ultrafine particles with high surface area and active *** addition,Fe3O4 lead to convenient magnetic recovery of the catalyst from reaction *** results indicate that the asprepared catalyst give the superb turnover frequency of 5367.8 h 1 with no additive,which is higher than most of the previously reported catalysts.

关键词： Core-shell Fe_(3)O_(4) Catalysis Dehydrogenation Formic acid

Effects of intermediate ni layer on mechanical properties of Al–Cu layered composites fabricated through cold roll bonding

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International Journal of Minerals,Metallurgy and Materials 2018年第5期25卷 573-583页

作者： Ali Shabani Mohammad reza Toroghinejad Alireza Bagheri Department of Materials Engineering Isfahan University of Technology

Layered composites have attracted considerable interest in the recent literature on metal composites. Their mechanical properties depend on the quality of the bonding provided by the intermediate layers. In this study, we analyzed the mechanical properties and bond strengths provided by the nickel layer with respect to its thickness and nature(either powder or coating). The results suggest that bond strength decreases with an increase in the content of nickel powder. At 0.3 vol% of nickel coating, we found the nature of nickel to be less efficient in terms of bond strength. A different picture arose when the content of nickel was increased and the bond strength increased in nickel coated samples. In addition, the results demonstrate that mechanical properties such as bend strength are strongly dependent on bond strength.

关键词： cold roll bonding Al/ni/Cu composite mechanical testing metallography

Statistical design and kinetic and thermodynamic studies of ni(Ⅱ) adsorption on bentonite

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Journal of Central South University 2017年第7期24卷 1529-1536页

作者： Bahareh Sadeghalvad Amir reza Azadmehr Hassan Motevalian Department of Mining&Metallurgical Engineering Amirkabir University of TechnologyTehranIran

The adsorption of the bentonite toward ni(II) from aqueous solution was studied to obtain optimum conditions,equilibrium model,thermodynamic and kinetic *** method was used to evaluate maximum amount of adsorbed ni(II).In this work,p H of solution during stirring,contact time,initial ni(II) concentration,particle size of bentonite and amount of bentonite were considered as effective parameters which should be *** increase of temperature has negative effect on the ni(II) *** equilibrium data were correlated well with Freundlich and Dubinin–Radushkevich isotherm models the correlation coefficients of which are(R^2) 0.994 and 0.971,*** model indicates heterogeneous and chemical absorption or ion exchange *** values of thermodynamic parameters such as ΔH°,ΔS° and ΔG° of nickel adsorption reveal that it is a spontaneous,exothermic and associative *** experimental data fit the pseudo-second-order kinetic very well with correlation coefficient(R^2) more than 0.995.

关键词： bentonite adsorption experimental design optimum condition equilibrium

Solvent extraction-separation of La(III),Eu(III) and Er(III) ions from aqueous chloride medium using carbamoyl-carboxylic acid extractants

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Journal of Rare Earths 2016年第1期34卷 91-98页

作者： Reyhaneh Safarbali mohammad reza yaftian abbasali zamani Phase Equilibria Research Laboratory Department of Chemistry Faculty of Science University of Zanjan 45371-38791 Zanjan Iran Department of Environmental Science Faculty of Science University of Zanjan 45371-38791 Zanjan Iran

N,N-dibutyldiglycol amic acid （HL1） and N,N-dioctyldiglycol nmic acid （HLu） were synthesized and characterized by conventional spectroscopic methods. These molecules were examined as extractants for extraction-separation of La（Ⅲ）, Eu（Ⅲ） and Er（Ⅲ）, as representative ions of light, middle and heavy rare earths, from aqueous chloride solutions. The analysis of the extraction equilibria revealed that the extracted species of lanthanum and europium ions by both of the extractants had a 1：3 metal to ligand ratio It was suggested that erbium ions were extracted into the organic phase via the formation ofEr（LIor Ⅱ）2Cl complexes. The effect of the organic diluents on the extraction-separation efficiency of the studied rare earths by HLI and HLⅡ was investigated by comparing the results obtained in dichloromethane and carbon tetrachloride. Regardless to the diluent used, the order of selectivity presented by the investigated extractants was Er（Ⅲ）〉Eu（Ⅲ）〉La（Ⅲ）. It is noteworthy that, a significant enhancement in separation of the studied rare earths by the extractants was achieved in their competitive extraction experiments with respect to that obtained in single component extraction experiments. Applicability of the extractants for the removal of rare earth ions from spent ni-MH batteries was tested by removal ofLa（Ⅲ）, Eu（Ⅲ） and Er（Ⅲ） ions from simulated leach solution of such batteries.

关键词： rare earths solvent extraction separation recovery amide-carboxylic acid ligands

Use of 2-(tert-butoxy)-N-(3-carbamothioylphenyl)acetamide and graphene oxide for separation and preconcentration of Fe(Ⅲ),ni(Ⅱ),Cu(Ⅱ) and Zn(Ⅱ) ions in different samples

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Chinese Chemical Letters 2014年第5期25卷 791-793页

作者： Mohammad reza Pourjavid Ali Akbari Sehat Majid Haji Hosseini Mohammad rezaee Masoud Arabieh Seyed reza Yousefi Mohammad reza Jamali NFCRS Nuclear Science & Technology Research InstituteAEOI Department of Analytical Chemistry Faculty of ChemistryUniversity College of ScienceUniversity of Tehran Department of Chemistry Payame Noor University

A simple and selective method using a column packed with graphene oxide（GO） as a solid phase extractant has been developed for the multi-element preconcentration of Fe（Ⅲ）,ni（Ⅱ）,Cu（Ⅱ） and Zn（Ⅱ）ions prior to flame atomic absorption spectrometric *** method is based on the sorption of mentioned ions on synthesized GO using 2-（tert-butoxy）-N-（3-carbamothioylphenyl）acetamide as a chelating *** parameters on the extraction and complex formation were *** the optimized conditions（pH 6,flow rate 9 mL/min）,metal ions were retained on the column,then quantitatively eluted by HNO3solution（5 mL,3.0 mol/L）.The preconcentration factor was calculated *** detection limits for the analyte ions of interest were found in the range of 0.11 ng/mL（ni2＋） to0.63 ng/mL（Cu2＋）.The column packed with GO was adequate for metal ions separation in matrixes containing alkali,alkaline earth,transition and heavy metal ions.

关键词： Solid phase extraction Transition metals Graphene oxide Flame atomic absorption spectrometry