نتایج جستجو برای: catalytic process

تعداد نتایج: 1379607  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - دانشکده ادبیات 1391

nothing affects learners more than assessment, so it is important to involve them in assessment process. involvment of learners in assessment helps them to become autonoumos learners. despite this importance iranian learners specialy javanroodian ones are not activily involved in the process. hence the aim of this thesis is to invesrtigate thier ability in th eassessment process

Leila Samiee Mostafa Dehghani Mobarake Ramin Karami

In the present work, the modified nickel electrode was electrochemically fabricated and tested for the electro-oxidation of paracetamol in alkaline media. The methods of cyclic voltammetry (CV), chronoamperometry (CA), and impedance spectroscopy (EIS) were used to determine kinetic parameters such as transfer coefficient (α), the catalytic reaction rate constants (k), and the diffusion coeffici...

Journal: :International Journal of Organic Chemistry 2012

Journal: :Angewandte Chemie 2021

Gas-to-PVC In their Research Article on page 24162, Guido Zichittella and Javier Pérez-Ramírez show the outstanding performance of rare earth oxychloride catalysts for selective conversion ethane into 1,2-dichloroethane, a precursor vinyl chloride monomer. The potential use natural gas as feedstock instead coal or oil represents long sought-after advancement to bring significant cost environmen...

Journal: :ACS Sustainable Chemistry & Engineering 2013

Journal: :Wiley Interdisciplinary Reviews: Energy and Environment 2016

Catalytic reforming is a chemical process utilized in petroleum refineries to convert naphtha, typically having low octane ratings, into high octane liquid products, called reformates, which are components of high octane gasoline. In this study, a mathematical model was developed for simulation of semi-regenerative catalytic reforming unit and the result of the proposed model was compared with ...

A novel hybrid catalyst based on grafting Cu on furfural imine-functionalized halloysite was designed, characterized and used for promoting synthesis of xanthene derivatives via three- component reaction of benzaldehyde derivatives, dimedone, and β-naphthol in aqueous media and under mild reaction condition. The results established high catalytic activity of the hybrid system, which was superio...

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