Results 31 to 40 of about 5,189,573 (392)

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

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

Probing metal ion binding and conformational properties of the colicin E9 endonuclease by electrospray ionization time-of-flight mass spectrometry [PDF]

open access: yes, 2002
Nano-electrospray ionization time-of-flight mass spectrometry (ESI-MS) was used to study the conformational consequences of metal ion binding to the colicin E9 endonuclease (E9 DNase) by taking advantage of the unique capability of ESI-MS to allow ...
HECK, ALBERT J.R.   +6 more
core   +3 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

Poly(bis-arylimidazoliums) possessing high hydroxide ion exchange capacity and high alkaline stability

open access: yesNature Communications, 2019
Solid polymer electrolyte electrochemical energy conversion devices that operate under highly alkaline conditions afford faster reaction kinetics and the deployment of inexpensive electrocatalysts compared with their acidic counterparts.
Jiantao Fan   +13 more
semanticscholar   +1 more source

Removal of quaternary ammonium compounds in ion exchange process [PDF]

open access: yesE3S Web of Conferences, 2019
The study attempted to evaluate the effectiveness of ion exchange process in cationic surfactant (benzalkonium chloride, BAC) removal from model solutions.
Klimonda Aleksandra, Kowalska Izabela
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

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

Polysulfone-based Anion Exchange Membranes for Potential Application in Solid Alkaline Fuel Cells [PDF]

open access: yesJournal of Renewable Energy and Environment, 2015
In present research work, anion exchange membranes based on quaternized polysulfone with ammonium cation moieties (QAPSF) were prepared by chloromethylation, amination and alkalization.
Mona Iravaninia, Sousan Rowshanzamir
doaj   +1 more source

Profiled Ion Exchange Membranes: A Comprehensible Review

open access: yesInternational Journal of Molecular Sciences, 2019
Profiled membranes (also known as corrugated membranes, micro-structured membranes, patterned membranes, membranes with designed topography or notched membranes) are gaining increasing academic and industrial attention and recognition as a viable ...
S. Pawlowski, J. Crespo, S. Velizarov
semanticscholar   +1 more source

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