The diffusion mechanism of alkali metal ions in the particles of cerium(IV) antimonate

被引：10

作者：

ElNaggar, IM

Zakaria, ES

AbdelWahab, MA

Belacy, N

Aly, HF

机构：

[1] Atomic Energy Authority, Cairo, Egypt

来源：

SOLID STATE IONICS | 1996年 / 92卷 / 3-4期

关键词：

ion exchange; cerium antimonate; activation energy; alkali exchange;

D O I：

10.1016/S0167-2738(96)00458-4

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The kinetic behaviour of Li+, Na+, K+ and Cs+ ions exchange on cerium(IV) antimonate were investigated under conditions of particle diffusion and the limited batch technique. Values for the diffusion coefficients, activation energy and entropy of activation were calculated and their significance were discussed. The values of the effective diffusion coefficient increased in the order Cs+ > K+ > Na+ > Li+, which parallels the ionic radii and the ionic mobility. The activation energy (E(a)) was found to decrease with decreases in the entropy change of the system. The data obtained for this exchanger were compared with those for organic resins and other inorganic ion exchangers.

引用

页码：309 / 315

页数：7

共 21 条

[1]

Amphlett C.B., 1964, INORGANIC ION EXCHAN

[2] THE DIFFUSION AND SORPTION OF WATER IN ZEOLITES .2. INTRINSIC AND SELF-DIFFUSION [J].

BARRER, RM ;

FENDER, BEF .

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1961, 21 (1-2) :12-24

[3]

BOOTS HMJ, 1989, J PHYS CHEM-US, V83, P8243

[4]

BOYED GB, 1953, J AM CHEM SOC, V75, P6091

[5]

BOYED GE, 1947, J AM CHEM SOC, V69, P2836, DOI DOI 10.1021/JA01203A066

[6]

CLEARFIELD A, 1978, INORGANIC ION EXCHAN

[7]

CONWAY DE, 1957, T FARADAY SOC, V50, P511

[8] A RADIOCHEMICAL STUDY OF THE KINETICS OF ION-EXCHANGE ON HYDROUS TITANIUM-DIOXIDE [J].

ELNAGGAR, IM ;

ELABSY, MA .

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-ARTICLES, 1992, 157 (02) :313-320

[9] THE MECHANISM OF DIFFUSION AND IONIC TRANSPORT OF ALKALI-METAL IONS IN THE PARTICLES OF TIN (IV) ANTIMONATE [J].

ELNAGGAR, IM ;

ELABSY, MA ;

ALY, SI .

SOLID STATE IONICS, 1992, 50 (3-4) :241-245

[10] KINETICS AND MECHANISM OF ISOTOPIC EXCHANGE FOR CO(2+) ASTERISK-CO(2+) IN TIN(IV) ANTIMONATE [J].

ELNAGGAR, IM ;

ABDELHAMID, MM ;

ALY, HF .

SOLVENT EXTRACTION AND ION EXCHANGE, 1994, 12 (03) :651-665

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