Application of Pseudohomogeneous and Heterogeneous Models in Assessing the Behavior of a Fluidized-Bed Catalytic Reactor

Control of a Fluidized Bed Polyethylene Reactor

In present paper, dynamic behavior and control of a fluidized bed reactor for polyethylene production has been considered. A double active sites model for Ziegler-Natta catalysts is used for simulation of polymerization reaction. Hydrodynamic behavior of the bed is modeled using a two phase model including bubble and emulsion phases in which bubble phase has plug flow pattern with different...

Decomposition of hydrogen peroxide in a catalytic fluidized-bed reactor

The decomposition of H2O2 by a novel supported g-FeOOH catalyst was performed in a continuous fluidized-bed reactor. This catalyst has been successfully used in the treatment of organic contaminants with H2O2 in our previous work. In this study, we attempted to determine the effects of pH, H2O2 concentration, and catalyst concentration on the decomposition of H2O2. An approach, we regarded this...

comparison of catalytic activity of heteropoly compounds in the synthesis of bis(indolyl)alkanes.

heteropoly acids (hpa) and their salts have advantages as catalysts which make them both economically and environmentally attractive, strong br?nsted acidity, exhibiting fast reversible multi-electron redox transformations under rather mild conditions, very high solubility in polar solvents, fairly high thermal stability in the solid states, and efficient oxidizing ability, so that they are imp...

Unsteady-State Modeling of the Fluidized Bed Polyethylene Reactor

this study investigated the relationship between quality of work life and organization citizenship behavior from the viewpoint of teachers in high schools in tehran city.

چکیده هدف از پژوهش حاضر بررسی رابطه کیفیت زندگی کاری و رفتار شهروندی سازمانی در مدارس مقطع متوسطه پسرانه شهر تهران از دیدگاه دبیران بود. روش پژوهش حاضر توصیفی و از نوع همبستگی بود. از بین دبیران مدارس شهر تهران تعداد 380 نفر به روش نمونه گیری خوشه ای چند مرحله ای به عنوان نمونه پژوهش انتخاب شدند و با تکمیل پرسشنامه ی کیفیت زندگی کاری والتون(1975) و پرسشنامه ی رفتار شهروندی سازمانی پودساکو...