Electrochemically controlled ion exchange: Copper ion exchange with sodium zeolite Y

2007 ◽  
Vol 53 (3) ◽  
pp. 1182-1188 ◽  
Author(s):  
Michael J. Stephenson ◽  
Robert A.W. Dryfe
Keyword(s):  
Ion Exchange ◽  
Zeolite Y ◽  
Copper Ion

Mn2+-Ion Site Distribution of Zeolite Y (FAU, Si/Al = 1.56) Depending on the Ion-Exchange Ratio

2016 ◽  
Vol 16 (5) ◽  
pp. 4523-4533
Author(s):  
Sung Man Seo ◽  
Dae Jun Moon ◽  
Jeong Min Suh ◽  
John Zhu ◽  
Woo Taik Lim
Keyword(s):  
Ion Exchange ◽  
Zeolite Y ◽  
Site Distribution

Synthesis, characterization and ion exchange isotherm of zeolite Y using Box–Behnken design

2016 ◽  
Vol 27 (2) ◽  
pp. 750-755 ◽  
Author(s):  
Adewolu Oyinade ◽  
Abdulsalami Sanni Kovo ◽  
Patrick Hill
Keyword(s):  
Ion Exchange ◽  
Zeolite Y ◽  
Box Behnken Design ◽  
Ion Exchange Isotherm

First Successful Application of the Thallous Ion Exchange (TIE) Method. Preparation of Fully Indium-Exchanged Zeolite Y (FAU, Si/Al = 1.69)

2014 ◽  
Vol 118 (42) ◽  
pp. 24655-24661 ◽  
Author(s):  
Joon Young Kim ◽  
Cheol Woong Kim ◽  
Yong-Ki Park ◽  
Na Young Kang ◽  
Nam Ho Heo ◽  
...  
Keyword(s):  
Ion Exchange ◽  
Zeolite Y

scholarly journals The Effect of Co2+-Ion Exchange Time into Zeolite Y (FAU, Si/Al = 1.56): Their Single-Crystal Structures

2014 ◽  
Vol 35 (1) ◽  
pp. 243-249 ◽  
Author(s):  
Sung Man Seo ◽  
Hu Sik Kim ◽  
Dong Yong Chung ◽  
Jeong Min Suh ◽  
Woo Taik Lim
Keyword(s):  
Ion Exchange ◽  
Single Crystal ◽  
Crystal Structures ◽  
Zeolite Y ◽  
Exchange Time ◽  
Single Crystal Structures

scholarly journals New nanocomposites for deep water deoxygenation

2021 ◽  
Vol 23 (4) ◽  
pp. 614-625
Author(s):  
Tatyana E. Fertikova ◽  
Sergey V. Fertikov ◽  
Ekaterina M. Isaeva ◽  
Vyacheslav A. Krysanov ◽  
Tamara A. Kravchenko
Keyword(s):  
Ion Exchange ◽  
Polymer Nanocomposites ◽  
Deep Water ◽  
High Capacity ◽  
Copper Ion ◽  
Polymer Materials ◽  
Residual Oxygen ◽  
The Matrix ◽  
Water Deoxygenation ◽  
Metal Polymer

New metal-polymer nanocomposites for deep water deoxygenation have been obtained and studied. A macro- and monoporous sulphocation exchanger with a nanometer pore size was used as the polymer matrix, and the metal was nanodispersed copper deposited in the pores of the matrix. A specific feature of the studied nanocomposites is their sodium ionic form, which eliminates the possibility of the formation of soluble copper oxidation products. The established linear dependence of the copper capacity on the number of cycles of ion-exchange saturation - chemical deposition shows that the process of metal deposition into the pores of the matrix does not have significant obstacles during 10 cycles and contributes to the production of high-capacity samples.The high efficiency and duration of the life cycle of high-capacity copper ion exchanger nanocomposites have been shown. Experimental studies of water deoxygenation in column-type apparatus with a nanocomposite nozzle were confirmed by a theoretical analysis of the process dynamics. Experimental data and theoretical calculations showed the deep level of water deoxygenation had practically unchanged values of pH and electrical conductivity. Residual oxygen can be controlled and does not exceed 3 μg/l (ppb).The hygienic and economic substantiation of the expediency of using the obtained nanocomposites is provided. The necessity of using modern nanocomposite metal-polymer materials for deep water deoxygenation circulating in technological systems was analysed. When using this innovation, the metal components of the distribution facilities will be protected from corrosion and, therefore, the hygienic requirements for the water quality of centralised drinking water supply systems will be ensured. Deep chemical water deoxygenation using copper ion-exchange polymer nanocomposites in sodium formallows solving the problem of the corrosion resistance of metals, ensuring that water meets hygienic requirements on a large scale.The competitive advantage of the considered water deoxygenation system in comparison with the known systems is the rejection of the use of precious metals-catalysts (palladium, platinum), pure hydrogen, and complex design solutions. The proposed new nanocomposite installation for water deoxygenation is characterised by its ease of use and can be built into a filter system for water purification.SWOT analysis of the advantages and disadvantages of the proposed method of water deoxygenation showed that its main advantages are the high oxygen capacity of the nanocomposite, low residual oxygen content (3 ppb (μg/l)) in the water, and ease of operation of the deoxygenator. Calculations of the economic efficiency of the nanocomposite have been carried out. The breakeven point is reached when producing only ~100 l of nanocomposite and a volume of sales ~1,600,000 roubles, above which a profit can be obtained. The payback period for an investment of ~15,000,000 roubles is rather short and will not exceed 2 years.

Strengthening of glassy by alkali-copper ion exchange

1980 ◽  
Vol 37 (1) ◽  
pp. 139-141 ◽  
Author(s):  
S. Sakka ◽  
T. Nishiyuki
Keyword(s):  
Ion Exchange ◽  
Copper Ion

Effect of the Zeolitic Matrix on the Reduction Process of Cu2+ Cations in Clinoptilolite, Mordenite and Erionite

2014 ◽  
Vol 880 ◽  
pp. 48-52 ◽  
Author(s):  
Inocente Rodríguez-Iznaga ◽  
Vitalii Petranovskii ◽  
Miguel Ángel Hernández Espinosa ◽  
Felipe Castillón Barraza ◽  
Alexey Pestryakov
Keyword(s):  
Ion Exchange ◽  
Copper Nanoparticles ◽  
Copper Ions ◽  
Charge Transfer Band ◽  
Copper Ion ◽  
Reduction Process ◽  
The State ◽  
Hydrogen Flow ◽  
Resonance Band ◽  
Natural Clinoptilolite

Three different zeolites (erionite, mordenite and natural clinoptilolite) were used to study influence of zeolite topology on the state of copper during ion-exchange and following reduction in hydrogen flow. This comparative study clearly demonstrates the influence of used zeolite matrices on the process of implantation of copper nanospecies. Starting from the ion-exchange, the alterations in the state of Cu2+ ions start to be evident due to variations of the intensity of charge transfer band. Copper ions start to reduce at specific temperatures depending on the type of zeolite matrix. Copper plasma resonance band change its shape and position for different zeolites. In the case of Cu-CLI samples this band change both the shape and position for different temperature of reduction. These observations permit to suggest that the mechanism of copper ion reduction and agglomeration to form copper nanoparticles noticeably depend on the type of zeolite matrix. This mechanism is more complex for the Cu CLI than for the Cu-MOR and Cu-ERI systems. Copper nanoparticles formed at low temperatures in the case of Cu-CLI samples undergo changes while temperature of reduction grow.

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