On the behaviour of hydrous tin oxide as an ion exchanger: Structural features, porous texture, capacity and apparent p K values

Petro, N.Sh.; El-Naggar, I.M.; Shabana, E. I.; Misak, Nasr Z.

doi:10.1016/0166-6622(90)80104-c

Cited by 20 publications

(7 citation statements)

References 19 publications

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“…This parameter was calculated for a dry weight -without physically adsorbed water. Thus, the initial xerogel corresponds to the composition of tin oxyhydroxide (Petro et al 1990;White and Rautiu 1997). The mass loss from 200 to 700 °C, when structural OH-groups are removed, is 5.73%.…”

Section: Sorption Experimentsmentioning

confidence: 99%

“…Tin dioxide SnO 2 is a versatile material, which is in demand in many industries, namely: the production of gas sensors, catalysis and photocatalysis, and others (Miller et al 2006;Adnan et al 2010;Teterycz et al 2011). At the same time, it is promising as an ion exchanger (Petro et al 1990). It is used for the removal of cations (Co (II), Th (IV), Cr (VI), U (VI) and others) and anions (F (I), I (I), IO 3 (I), Sb (OH) (VI)) (Misak et al 1992;Nilchi et al 2013;White and Rautiu 1997).…”

Section: Introductionmentioning

confidence: 99%

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Influence of mechanochemical and microwave modification on ion-exchange properties of tin dioxide with respect to uranyl ions

Samsonenko¹,

Zakutevskyy²,

Khalameida³

et al. 2019

Adsorption

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Wet gel and dried xerogel of precipitated tin oxy-hydroxide were subjected to mechanochemical and microwave treatments (MChT and MWT, respectively). The prepared samples were studied using DTA-TG, XRD, FTIR, nitrogen adsorption-desorption. MChT and MWT cause improvement of crystal structure, removal of structural OH-groups and increase mesopores diameter as well as form the meso-macroporous structure. As a result, drastic increase of uranyl-ions sorption for all modified samples is observed. Sorption centers can be divided into three groups: selective cation-exchange, non-selective cationexchange and anion-exchange. Keywords SnO 2 • Mechanochemical and microwave treatments • Ion-exchange properties * Barbara Charmas

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Section: Sorption Experimentsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Influence of mechanochemical and microwave modification on ion-exchange properties of tin dioxide with respect to uranyl ions

Samsonenko¹,

Zakutevskyy²,

Khalameida³

et al. 2019

Adsorption

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“…Cerium is the only rare earth, which has +4 oxidation state and behaves very much like Zr +4 and Th +4. PETRO et al 5,6 discussed the fundamental properties of hydrous ceric oxide as an ion exchanger. The thermodynamics of exchange of alkali metal ions and some monovalent anions on hydrous ceria are well reported by MISAK and MIKHAIL and they discussed their results in the light of EISENMAN's model.…”

Section: Introductionmentioning

confidence: 99%

Removal of zinc and mercury ions from aqueous solution by hydrous ceric oxide

Mishra

Singh

1999

J Radioanal Nucl Chem

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The present work deals with study of uptake behavior of zinc and mercury ions by hydrous ceric oxide applying a radiotracer technique, The influence of various parameters such as concentration, temperature and pH have been examined, tt was observed that the amount of zinc and mercury ions adsorbed at equilibrium increases with increase of adsorptive concentration (1.0.10 -7 to 1.0.1 0-2M) , temperature (303-333 K) and pH (ca. 3-10). Concentration dependence data agree well with the classical Freundlich isotherm. The radiation stability of hydrous ceric oxide was also investigated by exposing it to a 11.1 GBq (Ra-Be) source associated with 7-dose of 1.72 Gy .h -I and also using a 6~ source (4.66 kGy'h-1). Adsorption of these metal ions in the presence of some monovalent and divalent cations and complexing agents has also been included in the study.

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“…On the other hand, hydrous tin oxide is also found to be an important metal oxide, showing good cationic and anionic exchange behavior [15][16][17][18][19][20][21]. Its structural features, porous texture, capacity, and apparent pK values and the effect of aging and kinetics of exchange have been discussed [22,23].…”

Section: Introductionmentioning

confidence: 99%