Results 21 to 30 of about 1,280,216 (353)

The enhanced catalytic activity of Cu/SAPO-34 by ion exchange method for selective catalytic reduction of nitric oxide

open access: yesMaterials Research Express, 2021
The Cu/SAPO-34 catalysts were prepared via the ion exchange process for achieving improved catalytic activity. Effects of various parameters including copper ions sources, copper ions loadings and ion exchange temperature on catalyst performance of the ...
Dapeng Wang, Zhaokun Li, Chengwen Song
doaj   +1 more source

Study of the Electrical Conductivity of Ion-Exchange Resins and Membranes in Equilibrium Solutions of Inorganic Electrolytes

open access: yesMembranes, 2022
The study of the electrical conductivity of ion-exchange membranes in equilibrium electrolyte solutions is of great importance for the theory of membrane processes, in particular for practical electrodialysis.
Oleksandr Petrov   +6 more
doaj   +1 more source

Pulsed extraction of ionization from helium buffer gas [PDF]

open access: yes, 2008
The migration of intense ionization created in helium buffer gas under the influence of applied electric fields is considered. First the chemical evolution of the ionization created by fast heavy-ion beams is described.
Beaty   +34 more
core   +1 more source

Removal of Heavy Metal Particles by LTJ, ANA, SVR, BEC and MER zeolites particles: A Molecular Dynamics Simulation Study [PDF]

open access: yesJournal of Particle Science and Technology, 2015
In present study, molecular dynamics simulation of Cadmium (II), Lead (II) and Copper (II) removal from aqueous electrolyte solutions using the ion-exchange process with the zeolite particles was done.
Mohsen Mehdipour Ghazi   +2 more
doaj   +1 more source

Ion Exchange Voltammetry [PDF]

open access: yes, 2012
This chapter focuses on recent advances in the field of ion-exchanger-based voltammetric sensors, whose widespread use has given rise to a new electroanalytical technique named ion exchange voltammetry (IEV). The chapter starts with a brief historical overview and a short introduction to voltammetric methods of analysis, followed by the presentation of
UGO, Paolo, MORETTO, Ligia Maria
openaire   +2 more sources

Mechanical-structural investigation of chemical strengthening aluminosilicate glass through introducing phosphorus pentoxide

open access: yesFrontiers in Materials, 2016
Chemical strengthening of aluminosilicate glasses through K+-Na+ ion exchange has attracted tremendous attentions because of the accelerating demand for high strength and damage resistance glasses. However, a paramount challenge still exists to fabricate
Huidan Zeng   +6 more
doaj   +1 more source

Amberlite IRC-718 ion chelating resin extraction of hazardous metal Cr (VI) from aqueous solutions: equilibrium and theoretical modeling

open access: yesWater Science and Technology, 2021
Under varied conditions, the IRC 718 ion-exchange resin is used to extract chromium (VI) ions from aqueous solutions. On chromium (VI) removal effectiveness, the effects of adsorption dosage, contact time, beginning metal concentration, and pH were ...
Abdelhamid Addala   +4 more
doaj   +1 more source

Direct Measurement of Vanadium Crossover in an Operating Vanadium Redox Flow Battery [PDF]

open access: yes, 2013
Measurements of Vanadium diffusion coefficients for transport across cation exchange membranes using dialysis cells have been reported in the literature.
Meyers, Jeremy P., Sing, David Charles
core   +1 more source

MMI Devices with Weak Guiding Designed in Three Dimensions Using a Genetic Algorithm [PDF]

open access: yes, 2004
We discuss the design of weakly guided multimode interference (MMI) devices using a genetic algorithm. For devices exhibiting a nonnegligible vertical waveguide offset, such as those produced using ion exchange in glass, three-dimensional modeling is ...
Honkanen, Seppo, West, Brian R.
core   +3 more sources

The Li + , Na + and K + ion exchange reaction process on the surface of mixed oxide SiO 2 /TiO 2 /Sb 2 O 5 surface prepared by the Sol-Gel processing method

open access: yesEclética Química, 2018
The porous mixed oxide SiO 2 /TiO 2 /Sb 2 O 5 obtained by the sol-gel processing method presented a good ion exchange property and a high exchange capacity towards the Li + , Na + and K + ions.
C. U. Ferreira   +3 more
doaj   +1 more source

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