نتایج جستجو برای: gas permeation

تعداد نتایج: 253553  

A palladium membrane was prepared using the electroless plating technique (ELP) for the separation and purification of hydrogen from a gas mixture. Depending on operating conditions, hydrogen flux from the membrane was in the range of 0.012-0.023 mol.m-2.s-1. The membrane performance in the presence of CO2 was investigated. The results of the GC analysis showed that at a feed concentration of 1...

Journal: :Chemical Engineering & Technology 2023

Due to the density differences between gases and liquids, gas supply often limits conversion of gas-liquid reactions in slug flows. This paper investigates permeation reacting into an existing flow fluorinated ethylene propylene capillaries up 40 m length, representing a significant sizing-up tube-in-tube reactors (maximum 4 m). The amount introduced can be estimated with coefficients given lit...

2013
S. M. Momeni M. Pakizeh

Nanocomposite membranes composed of polymer and inorganic nanoparticles are a novel method to enhance gas separation performance. In this study, membranes were fabricated from polysulfone (PSf) containing magnesium oxide (MgO) nanoparticles and gas permeation properties of the resulting membranes were investigated. Membranes were prepared by solution blending and phase inversion methods. Morpho...

Journal: :علوم و تکنولوژی پلیمر 0
مجید مهدویان سید علی اصغر قریشی

among various reported membrane-based gas separation processes, the best explanation is generally achieved by the solution-diffusion model. the main factors in this model are the solubility and diffusivity of permeationcomponents through the membrane. the prediction of permeability and diffusivity in multicomponent gas permeation as well as the separation evaluation equilibrium and kinetic inte...

Optically active bionanocomposite membranes composed of polyester(PE) and cellulose /silica bionanocomposite (BNCs) are a novel method to enhance gas separation performance. Commercially available silica nanoparticles were modified with biodegradable nanocellulose through ultrasonic irradiation technique. Transmission electron microscopy (TEM) analyses showed that the cellulose/silica composite...

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