نتایج جستجو برای: cation exchange membranes

تعداد نتایج: 328085  

Journal: :iranian journal of hydrogen & fuel cell 2015
mona iravaninia saba azizi soosan rowshanzamir

in present research work, homogeneous anion exchange membranes based on polysulfone (qapsfs) were prepared via chloromethylation, amination and alkalization. in amination step, trimethylamine and n,n,n',n'-tetramethyl-1,6-hexanediamine were used as amination and crosslinking agents, respectively. the chloromethylated polysulfone was characterized by 1hnmr spectroscopy and chloromethylation degr...

Journal: :Journal of The Electrochemical Society 2023

This work analyses the water transport and ionic losses in bipolar membranes at electrolysis cells conditions. In common setups, is split interface between anion exchange membrane (AEM) cation (CEM). Accordingly, ions (protons hydroxide ions) are transported to electrodes, carrying out of both via electro-osmotic drag. These outfluxes plus required amount for splitting process have be compensat...

Alireza Khani, Mohammad Galehassadi

In this paper, the silicon-containing sulfonated polystyrene/acrylate–ionic liquid (Si-SPS/A–IL)hybrid membranes was prepared to obtain the proton exchange membrane (PEM) materials withhigh methanol barrier and good selectivity. The Si-SPS/A–IL hybrid membranes characterized asthe function of IL to evaluate their potential as PEMs in direct methanol fuel cells (DMFCs).Fourdifferent Hybrid mater...

Journal: :iranian journal of hydrogen & fuel cell 2014
mehran javanbakht khadijeh hooshyari morteza enhessari hossein beydaghi

proton exchange membrane fuel cells (pemfcs) are electrochemical devices that show the highest power densities compared to the other type of fuel cell. in this work, nanocomposite membranes used for proton exchange membrane fuel cells as poly(vinyl alcohol)/la2ce2o7 (pva-lc) with the aim of increasing the water uptake and proton conductivity. glutaraldehyde (ga) was used as cross linking agent ...

Journal: :journal of membrane science and research 0
m. nemati department of chemical engineering, faculty of engineering, arak university, arak 38156-8-8349, iran s. m. hosseini department of chemical engineering, faculty of engineering, arak university, arak 38156-8-8349, iran e. bagheripour department of chemical engineering, faculty of engineering, arak university, arak 38156-8-8349, iran s.s. madaeni membrane research centre, department of chemical engineering, faculty of engineering, razi university, kermanshah 67149, iran

in the current research, polyvinylchloride based mixed matrix heterogeneous anion exchange membranes were prepared by a solution casting technique. titanium dioxide nanoparticles were also utilized as inorganic filler additive in the membrane fabrication. the effect of tio2 nanoparticles concentration in the casting solution on the membrane physico-chemical properties was studied. membrane wate...

Journal: :ChemElectroChem 2022

Ionic diffusion coefficients in the membrane are needed for modelling of ion transport ion-exchange membranes (IEMs) with Nernst-Planck equation. We have determined ionic Na+, OH?, H+, Cl?, SO42?, NaSO4?, and HSO4? from experiments dilute NaCl, NaOH, HCl, Na2SO4, H2SO4 solutions through IEMs conductivity measured these solutions, using electrochemical impedance spectroscopy. The order fluxes ac...

Journal: :Adsorption Science & Technology 2003

Journal: :Journal of Biological Chemistry 1974

Journal: :JPhys energy 2022

Abstract Inorganic two-dimensional membranes offer a new approach to modulating mass transport at the nanoscale. These membranes, which can harness van der Waals gap as nanochannel and address persistent challenges in organic are limited few material libraries, such graphene, graphene oxide, molybdenum disulfide, boron nitride. Here we report for first time development of cation-selective layer...

Journal: :آب و خاک 0
معماریان فرد معماریان فرد بیگی هرچگانی بیگی هرچگانی

abstract cation exchange capacity (cec) is an important characteristic of soil in terms of nutrient and water holding capacities and contamination management. measurement of cec is laborious and time-consuming. therefore, cec estimation through other easily - measured properties is desirable. in this study, ptfs for estimation of cation exchange capacity from basic soil properties such as parti...

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