نتایج جستجو برای: anion exchange capacity
تعداد نتایج: 484705 فیلتر نتایج به سال:
The green-H2 production through water electrolysis from renewable energies is vital in the context of developing a sustainable and cost-effective methodology. Anion exchange membrane electrolyzer (AEMWE) considered as promising energy conversion device, which can be an alternative to fossil fuel-based energyplatforms. AEMWE employ inexpensive nonprecious metal catalysts current collectors, pref...
Highly porous polypyrrole (PPy)-nanocellulose paper sheets have been evaluated as inexpensive and disposable electrochemically controlled three-dimensional solid phase extraction materials. The composites, which had a total anion exchange capacity of about 1.1 mol kg(-1), were used for extraction and subsequent release of negatively charged fluorophore tagged DNA oligomers via galvanostatic oxi...
in this thesis protic and aprotic ammonium-based ionic liquids were synthesized and their surface tensions were measured in the range of 298-373k. the protics are alkyl ammonium-based ils with the carboxylate (formate, acetate, propionate) anion and aprotics are quaternary ammonium-based ils with bis(trifluoromethylsulfonyl)imide anion. capillary rise method was used for surface tension measure...
The current study was attributed to uranium (VI) ions adsorption using a anion exchanger resin, Dowex®2x8, in the presence of sulfate anions. Evaluation of operational parameters including contact time, pH, initial concentration of uranium ions, and presence of various anions (including phosphate, sulfate, chloride, fluoride, and nitrate) in the solution was assessed on sorption performance of ...
The uptakes of molecular iodine and bromine by both strong acid cation (Dowex 50W-X4 and X8) and strong base anion (Dowex 1-X4 and X8) exchange resins have been studied in aqueous solutions at 25 degrees C. An empirical formula for the amount of solute taken up by the resin in mmol per gram of dry resin, Q, as a function of the solute concentration in M (mol dm(-3)), C, was derived. Direct prop...
A technique is described using ACCELL QMA anion-exchange SEP-PAKs (Waters Associates) with ammonium formate-based solutions, whereby a sample can be processed within minutes to yield resolution of inositol phosphates. Isomers of inositol trisphosphate can then be separated by using this technique in combination with a rapid (5-6 min) isocratic h.p.l.c. procedure. The use of QMA SEP-PAKs offers ...
Serum labelled with (59)Fe for ferrokinetic studies should contain only [(59)Fe] transferrin. [(59)Fe] ferric citrate was incubated at 37 degrees C for up to 24 hours with sera having an excess latent iron-binding capacity. The results showed that unbound [(59)Fe] ferric citrate may be present for several hours. An anion exchange resin (IRA 400 Cl(-)) column removed all the [(59)Fe] ferric citr...
In the work, sedimentation-stable sols of indium (III) and tin (IV) hydroxides were obtained by Anion Resin Exchange Precipitation, which consists exchange reaction between OH ions anion resin anions metal-containing solutions. The synthesized hydrosols used to obtain conducting films In2O3 oxide doped with Tin In2O3: Sn, a surface resistance 4 kOhm/sq, thicknesses 200–500 nm transparency more ...
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