Sharif Digital Repository

Modeling of multiple noncatalytic gas-solid reactions in a moving bed of porous pellets based on finite volume method

Author

Valipour, M. S.

Pub. Year

2007

Subjects

Finite volume method. / Mass transfer. / Mathematical models. / Packed beds. / Reaction kinetics. / Endothermic reactions. / Gas-solid reaction. / Multiple reactions. / Nonisothermal transient condition. / Porous materials.

Numerical investigation of nonisothermal reduction of hematite using Syngas: The shaft scale study

Author

Valipour, M. S.

Pub. Year

2007

Subjects

Carbon monoxide. / Mathematical models. / Reduction. / Synthesis gas. / Water vapor. / Cylindrical reactors. / Hematite pellets. / Nonisothermal reduction. / Reduction zone. / Unreacted shrinking core model (USCM) / Hematite.

A non-isothermal, transient model of a non-catalytic reaction in a packed bed with a multi-component high-temperature gas mixture

Author

Valipour, M. S.

Pub. Year

2005

Subjects

Finite volume. / Gas-solid reaction. / Gaseous species. / Governing equations. / Hematite pellets. / Heterogeneous reactions. / High temperature. / Moving packed bed. / Multicomponents. / Non-catalytic. / Nonisothermal. / Porous domain. / Thermal phenomena. / Transient model. / Transport of heat. / Catalysis. / Chemical reactors. / Computational fluid dynamics. / Heat transfer. / Iron ores. / Mathematical models. / Porous materials. / Packed beds.

Three-phase PFC rectifier with high efficiency and low cost for small PM synchronous wind generators

Author

Rezazadeh, G.

Publisher

Institute of Electrical and Electronics Engineers Inc,

Pub. Year

2016

Subjects

Permanent magnet synchronous generator. / Power factor correction rectifier. / AC-AC power converters. / Costs. / DC-DC converters. / Electric generators. / Electric power factor correction. / Electric rectifiers. / Magnets. / Permanent magnets. / Power electronics. / Rectifying circuits. / Synchronous generators. / Wind turbines. / Closed-loop simulations. / Permanent magnet synchronous generator. / Power electronic converters. / Power factor correction rectifier. / Power factor corrections. / SEPIC converter. / Synchronous inductance. / Wind generator systems. / Power converters.

Flicker-free electrolytic capacitor-less universal input offline LED driver with PFC

Author

Valipour, H.

Publisher

Institute of Electrical and Electronics Engineers Inc,

Pub. Year

2016

Subjects

Flicker-free. / Off-line LED driver. / One-and-a-half stage conversion. / Power factor correction (PFC) / Capacitors. / Cost reduction. / DC-DC converters. / Efficiency. / Electric power factor correction. / Electrolytic capacitors. / Light emitting diodes. / Lighting. / Reconfigurable hardware. / Electrolytic capacitor-less. / Flyback converters. / Flyback transformer. / LED drivers. / Lighting efficiency. / Lighting systems. / Power factor corrections. / Two stage circuits. / Power converters.

Electrolytic capacitor-less AC-DC LED driver with constant output current and PFC

Author

Valipour, H.

Pub. Year

2015

Subjects

AC/DC LED drivers. / Flicker-free LED driver. / Light-emitting diode (LED) / Power factor correction (PFC) / Capacitors. / Cost reduction. / DC motors. / DC-DC converters. / Efficiency. / Electric power factor. / Electrolytic capacitors. / Lighting. / Power converters. / Power electronics. / Rectifying circuits. / Closed-loop simulations. / Electrolytic capacitor-less. / Flyback transformer. / LED drivers. / Lighting efficiency. / One-stage converters. / Power factor corrections. / Two-stage converter. / Light emitting diodes.

Mathematical modeling of the reaction in an iron ore pellet using a mixture of hydrogen, water vapor, carbon monoxide and carbon dioxide: An isothermal study

Author

Valipour, M. S.

Publisher

VSP BV,

Pub. Year

2006

Subjects

Carbon dioxide. / Carbon monoxide. / Grain boundaries. / Hydrogen. / Iron ore pellets. / Iron ore reduction. / Mathematical models. / Vapors. / Heterogeneous reaction. / Multi-species reducing gas. / Pellet reduction. / Thermal behaviors. / Reaction kinetics.

Enhanced recovery and recycling of catalyst by post-impregnation of γ-Al2O3 with 12-tungstophosphoric acid for esterification reaction

Author

Nazari, P.

Publisher

Wiley-Liss Inc,

Pub. Year

2018

Subjects

Polyoxometalate. / γ-Al2O3. / Activation energy. / Catalyst activity. / Catalysts. / Enhanced recovery. / Enzyme kinetics. / Esterification. / Esters. / Impregnation. / Kinetics. / Oxides. / Rate constants. / Reaction kinetics. / Recycling. / Tellurium compounds. / 12-tungstophosphoric acid. / Catalytic performance. / Esterification reactions. / Polyoxometalates. / Post-impregnation. / Reaction temperature. / Recycling of catalysts. / Textural characterization. / Aluminum compounds.

Theoretical studies of the influence of protic and aprotic ionic liquids on the basicity of CaO as a solid base catalyst

Author

Zobeydi, R.

Publisher

Elsevier B.V,

Pub. Year

2018

Subjects

CaO cluster. / DFT. / Ionic liquid. / Molecular basicity. / Proton affinity.

Effective degradation of Reactive Red 195 via heterogeneous electro-Fenton treatment: theoretical study and optimization

Author

Nazari, P.

Publisher

Center for Environmental and Energy Research and Studies,

Pub. Year

2019

Subjects

Density functional theory. / Electro-fenton. / Electrochemical advanced oxidation processes. / Kinetics. / Response surface methodology. / Catalyst activity. / Chemical oxygen demand. / Design for testability. / Enzyme kinetics. / Graphene. / Iron oxides. / Leaching. / Magnetite. / Magnetite nanoparticles. / Oxidation. / Particle size. / Surface properties. / Synthesis (chemical) / Central composite designs. / Electrical conductivity. / Electro-fenton treatments. / Electrochemical advanced oxidation process. / Pollutant concentration. / Pseudo first-order kinetics. / Catalyst. / Chemical compound. / Concentration (composition) / Dye. / Electrochemical method. / Optimization. / Pollutant removal. / Precipitation (chemistry) / Reaction kinetics. / Theoretical study.

Efficient Fe/CuFeO2/rGO nanocomposite catalyst for electro-Fenton degradation of organic pollutant: Preparation, characterization and optimization

Author

Nazari, P.

Publisher

John Wiley and Sons Ltd,

Pub. Year

2019

Subjects

Catechol. / Delafossite CuFeO2. / Chemical oxygen demand. / Copper compounds. / Gas chromatography. / Graphene. / Iron. / Iron compounds. / Leaching. / Mass spectrometry. / Nanocatalysts. / Nanocomposites. / Oxidation. / Phenols. / Rate constants. / Reusability. / Scanning electron microscopy. / Delafossites. / Electro-fenton. / Fourier transform infra reds. / Optimum operating conditions. / Oxidative degradation. / Pseudo first-order kinetics. / Organic pollutants.

Designed model for the Morita–Baylis–Hillman reaction mechanism in the presence of CaO and CaO modified with ionic liquid as a solid base catalyst: a DFT and MP2 investigation

Author

Zobeydi, R.

Publisher

Springer New York LLC,

Pub. Year

2018

Subjects

Activated alkenes. / CaO cluster. / DFT. / Ionic liquid. / MBH reaction.