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| 1 | Preparation of nanocrystalline γ-Al_2O_3 catalyst using different procedures for methanol dehydration to dimethyl ether显示文摘A series of nanocrystalline γ-alumina are synthesized by different procedures, namely, thermal decomposition method (sample A), precipita-tion method (sample B) and sol-gel method using sucrose and hexadecyltrimethyl ammonium bromide (CTAB) as templates (samples C and D, respectively). Textural and acidic properties of γ-alumina samples are characterized by XRD, N2 adsorption-desorption and NH3-TPD techniques. Vapor-phase dehydration of methanol into dimethyl ether is carried out over these samples. Among them, sample C shows the highest catalytic activity. NH3-TPD analysis reveals that the sample with smaller crystallite size possesses higher concentration of medium acidic sites and consequently higher catalytic activity. Thermal decomposition method leads to decrease in both surface area and moderate acidity, therefore it is the cause of lower catalytic activity. | Ahmad Reza Keshavarz Mehran Rezaei Fereydoon Yaripour | 2011 | Journal of Natural Gas Chemistry2011，20，3： | 7 |
| 2 | Synthesis of nanocrystalline γ-Al_2O_3 by sol-gel and precipitation methods for methanol dehydration to dimethyl ether显示文摘The capability of sol-gel and conventional precipitation techniques for the synthesis of nanocrystalline γ-alumina was investigated. These catalysts were used for vapor-phase dehydration of methanol to dimethyl ether in a fixed-bed reactor under the same operating conditions (T = 300 ?C, P = 1 bar, LHSV = 2.8, 11.7, 26.1 h?1) and characterized by means of N2 adsorption-desorption, NH3-TPD, XRD, TGA and SEM techniques. According to the experimental results, the catalysts prepared using sol-gel method in non-aqueous medium showed better performance compared with those prepared by other methods. | Zahra Hosseini Majid Taghizadeh Fereydoon Yaripour | 2011 | Journal of Natural Gas Chemistry2011，20，2： | 4 |
| 3 | Introduction of table sugar as a soft second template in ZSM-5 nanocatalyst and its effect on product distribution and catalyst lifetime in methanol to gasoline conversion显示文摘Methanol to gasoline reaction was investigated on two prepared ZSM-5 catalysts. The first one was a conventional catalyst denoted as ZSM-5(C) and the other was a hierarchical catalyst-ZSM-5(S) which was prepared by incorporation of table sugar in catalyst gel during the synthesis procedure. The catalysts were characterized by FTIR, XRD, FE-SEM, N_2 adsorption-desorption, NH_3-TPD and TGA analytical technics. The proposed material showed pore modification as well as acidity moderating properties in ZSM-5 catalyst. The methanol to gasoline reaction was conducted in a fixed bed reactor with a WHSV of 1.5 h^(-1).Methanol conversions, gasoline yield and selectivity in production for the synthesized catalysts were determined by gas chromatography method. The sugar modified catalyst converted more methanol than the conventional one and an enhancement in catalyst's life time was observed. The selectivity to aromatics and durene were reduced compared to the conventional catalyst, so the gasoline quality was also further improved. The coking rate of catalysts was calculated employing TGA method. A reduction in coking rate and an increase in coke capacity of the modified catalyst were observed. | Peyman Noor Mohammadreza Khanmohammadi Behrooz Roozbehani Fereydoon Yaripour Amir Bagheri Garmarudi | 2018 | Journal of Energy Chemistry2018，27，2： | 2 |
| 4 | Twenty-nine years after carbon monoxide intoxication 显示文摘 | Fereydoon R Roger W K Nirav M | 2001 | Cinical Neurology and Neurosurgery2001，103，： | 1 |
| 5 | On the pseudocapacitive behavior of nanostructured molybdenum oxide显示文摘 | Hossein Farsi Fereydoon Gobal Heidar Raissi Shokufeh Moghiminia | 2010 | Journal of Solid State Electrochemistry2010，，4： | 1 |
| 6 | X ray and trichroic infrared orientation analyses of uniaxially stretched PA6 and MXD6 nanoclay composite films显示文摘 | Maryam Fereydoon Seyed H Tabatabaei | 2014 | Macromolecules2014，47，： | 1 |
| 7 | A genetic algorithm for resource investment project scheduling problem,tardiness permitted with penalty显示文摘 | Shadrokh Shahram Kianfar Fereydoon | 2007 | European Journal of Operational Research2007，181，1： | 1 |
| 8 | 碱性介质中(氢)氧化铜修饰电极电催化氧化蔗糖(英文)显示文摘A stable copper(hydr)oxide-modified electrode was prepared in 0.5 mol/L NaOH solution by cyclic voltammetry in the range of -250 to 1 000 mV.It can be used for electrochemical studies in the range of -250 to 1000 mV without interfering peaks because there is no oxidation of copper.During an anodic potential sweep,the electro-oxidation of saccharose on Cu occurred by the formation of CuⅢ and this reaction also occurred in the early stages of the reversed cycle until it is stopped by the negative potentials.A mechanism based on the electro-chemical generation of CuⅢ active sites and their subsequent consumption by saccharose was proposed,and the rate law and kinetic parameters were obtained.The charge transfer resistance from theoretical and impedance studies was used to verify the mechanism.Under chronoamperometry regimes,the reaction followed Cottrellian behavior.The transfer of up to 21 electrons was observed in further investigations of the electro-oxidation of saccharose on a(hydr)oxide Cu rotating disk electrode. | Majid JAFARIAN Mehdi RASHVAND AVEI Iman DANAEE Fereydoon GOBAL Mohammad G.MAHJANI | 2010 | 催化学报2010，31，11： | 1 |
| 9 | NaOH溶液中Ni基石墨修饰电极上甲醇电氧化过程中钴与铜的协同效应(英文)显示文摘在NaOH溶液(0.1 mol/L)中考察了Ni,Co和Cu二元和三元合金修饰的石墨电极上甲醇电氧化反应性能.采用循环伏安法、计时电流法和电化学阻抗谱(EIS)等技术研究了修饰电极的催化活性和协同效应.这些催化剂在含有Ni,Cu和Co离子溶液的阴极电位上反复浸渍石墨电极制得.结果表明,在甲醇存在下,Ni基三元合金修饰电极(G/NiCuCo)对甲醇氧化反应的响应值明显高于其它样品.阳极峰值电流与扫描速率的平方根呈线性关系,表明该过程受扩散控制.在CA区域,该反应遵循Cottrellin特性,甲醇扩散系数为6.25×10–6 cm2/s.甲醇氧化反应速率常数为40×107 cm3/(mol·s).另外,采用EIS研究了修饰电极表面上甲醇催化氧化反应. | Tayebe Rostami Majid Jafarian Somaieh Miandari Mohammad G.Mahjani Fereydoon Gobal | 2015 | Chinese Journal of Catalysis2015，36，11： | 1 |
| 10 | Taguchi analysis of extrusion variables and composition effects on the morphology and mechanical properties of EPR-g-MA toughened polyamide 6 and its composite with short glass fiber显示文摘 | A Shojaei M Fereydoon | 2009 | Materials Science and Engineering A2009，506，12： | 1 |
| 11 | Twenty-nine years after carbon monoxide intoxication显示文摘 | Roger WK Nirav M | 2001 | Clin Neurol Neurosurg2001，，： | 1 |
| 12 | Qualitative Indicators for the Evaluation of Universities Performance 显示文摘 | Fereydoon A | 2010 | Social and Behavioral Sciences2010，2，2： | 1 |
| 13 | Visible electroluminescence from porous silicon np heterojunction diodes 显示文摘 | FEREYDOON N MARUSKA H P KALKHORAN N M | 1992 | A P L1992，60，20： | 1 |
| 14 | An Efficient Optimal Algorithm for the Quantity Discount Problem in Material Requirement Planning显示文摘 | Hamid M S Shahram S Fereydoon K | 2009 | Computers and Operations Research2009，36，6： | 1 |
| 15 | Dynamic simulation modeling for heavy duty automatic transmission control development显示文摘 | FEREYDOON JAMZADEH TUNG-MING HSIEH KEITH STRUTHERS | | SAE paper0，，： | 1 |
| 16 | Taguehi analysis of extrusion variables and composition eftects on the morphology and mechanical properties of EPR-g-MA toughened polyamide 6 and its composite with short glass fiber 显示文摘 | SHOJAEI A FEREYDOON M | 2009 | Mater Sci Eng A2009，506，： | 1 |
| 17 | A genetic algorithm for resource investment project scheduling problem, tardiness permitted with penalty显示文摘 | Shahram Shadrokh Fereydoon Kianfar | 2006 | European Journal of Operational Research2006，，1： | 1 |
| 18 | Twenty-nine years after carbon monoxide intoxication显示文摘 | Fereydoon R Roger WK Nirav M | 2001 | Clin Neurol Neurosurg2001，103，： | 1 |
| 19 | A mathematical model of nanoparticulate mixed oxide pseudocapacitors; part I: model description and particle size effects显示文摘 | Hossein Farsi Fereydoon Gobal | 2009 | Journal of Solid State Electrochemistry2009，，： | 1 |
| 20 | Electrochemical Impedance of Ethanol Oxidation in Alkaline Media显示文摘Nickel modified NiOOH electrodes were used for the electrocatalytic oxidation of ethanol in alkaline so lutions. The electro-oxidation of ethanol in a 1 mol/L NaOH solution at different concentrations of ethanol was stu died by ac impedance spectroscopy. Electrooxidation of ethanol on Ni shows negative resistance on impedance plots. The impedance shows different patterns at different applied anodic potential. The influence of the electrode potential on impedance was studied and a quantitative explanation for the impedance of ethanol oxidation was given by means of a proposed mathematical model. At potentials higher than 0.52 V(vs. Ag/AgCl), a pseudoinductive behavior was observed, but at those higher than 0.57 V, impedance patterns were reversed to the second and third quadrants. The conditions required for the reversing of impedance pattern were delineated with the impedance model. | DANAEE Iman JAFARIAN Majid GOBAL Fereydoon SHARAFI Mahboobeh MAHJANI Mohammad-ghasem | 2012 | Chemical Research in Chinese Universities2012，28，1： | 1 |
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