Home > Research > Publications & Outputs > Coordination of Cd2+ ions in the internal pore ...

Research

Links

Text available via DOI:

Keywords

View graph of relations

Coordination of Cd2+ ions in the internal pore system of Zeolite-X : a combined EXAFS and isotopic exchange study.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Published

Standard

Coordination of Cd2+ ions in the internal pore system of Zeolite-X : a combined EXAFS and isotopic exchange study. / Ahmed, Imad A. M.; Young, S. D.; Mosselmans, J. F. W. et al.
In: Geochimica et Cosmochimica Acta, Vol. 73, No. 6, 15.03.2009, p. 1577-1587.

Research output: Contribution to Journal/Magazine › Journal article › peer-review

Harvard

Ahmed, IAM, Young, SD, Mosselmans, JFW, Crout, NMJ & Bailey, EH 2009, 'Coordination of Cd2+ ions in the internal pore system of Zeolite-X : a combined EXAFS and isotopic exchange study.', Geochimica et Cosmochimica Acta, vol. 73, no. 6, pp. 1577-1587. https://doi.org/10.1016/j.gca.2008.12.018

APA

Ahmed, I. A. M., Young, S. D., Mosselmans, J. F. W., Crout, N. M. J., & Bailey, E. H. (2009). Coordination of Cd2+ ions in the internal pore system of Zeolite-X : a combined EXAFS and isotopic exchange study. Geochimica et Cosmochimica Acta, 73(6), 1577-1587. https://doi.org/10.1016/j.gca.2008.12.018

Vancouver

Ahmed IAM, Young SD, Mosselmans JFW, Crout NMJ, Bailey EH. Coordination of Cd2+ ions in the internal pore system of Zeolite-X : a combined EXAFS and isotopic exchange study. Geochimica et Cosmochimica Acta. 2009 Mar 15;73(6):1577-1587. doi: 10.1016/j.gca.2008.12.018

Author

Ahmed, Imad A. M. ; Young, S. D. ; Mosselmans, J. F. W. et al. / Coordination of Cd2+ ions in the internal pore system of Zeolite-X : a combined EXAFS and isotopic exchange study. In: Geochimica et Cosmochimica Acta. 2009 ; Vol. 73, No. 6. pp. 1577-1587.

Bibtex

@article{b8035debbe0d4e85a73c580755a80264,
title = "Coordination of Cd2+ ions in the internal pore system of Zeolite-X : a combined EXAFS and isotopic exchange study.",
abstract = "The effect of prolonged contact time (up to 130 days) on the immobilization of Cd by sorption to calcium exchanged zeolite-X (CaX), under environmentally relevant conditions, was studied using both isotopic exchange and extended X-ray absorption fine structure spectroscopy (EXAFS). Sorption and isotopic exchange measurements revealed time-dependent Cd sorption and indicated the movement of Cd2+ ions into less accessible sites due to ageing. EXAFS suggested progressive fixation of Cd in the double six-ring (D6R) unit of the CaX structure. Proportional allocation of the apparent Cd–Si bond distance to two {\textquoteleft}end-members{\textquoteright}, across all contact times, indicated that the bond distance for labile Cd was 3.41 {\AA} and for non-labile (or fixed) Cd was 3.47 {\AA}.",
keywords = "IONS SYSTEM EXAFS exchange",
author = "Ahmed, {Imad A. M.} and Young, {S. D.} and Mosselmans, {J. F. W.} and Crout, {N. M. J.} and Bailey, {E. H.}",
note = "NOT IN FILE",
year = "2009",
month = mar,
day = "15",
doi = "10.1016/j.gca.2008.12.018",
language = "English",
volume = "73",
pages = "1577--1587",
journal = "Geochimica et Cosmochimica Acta",
issn = "0016-7037",
publisher = "Elsevier Limited",
number = "6",

}

RIS

TY - JOUR

T1 - Coordination of Cd2+ ions in the internal pore system of Zeolite-X : a combined EXAFS and isotopic exchange study.

AU - Ahmed, Imad A. M.

AU - Young, S. D.

AU - Mosselmans, J. F. W.

AU - Crout, N. M. J.

AU - Bailey, E. H.

N1 - NOT IN FILE

PY - 2009/3/15

Y1 - 2009/3/15

N2 - The effect of prolonged contact time (up to 130 days) on the immobilization of Cd by sorption to calcium exchanged zeolite-X (CaX), under environmentally relevant conditions, was studied using both isotopic exchange and extended X-ray absorption fine structure spectroscopy (EXAFS). Sorption and isotopic exchange measurements revealed time-dependent Cd sorption and indicated the movement of Cd2+ ions into less accessible sites due to ageing. EXAFS suggested progressive fixation of Cd in the double six-ring (D6R) unit of the CaX structure. Proportional allocation of the apparent Cd–Si bond distance to two ‘end-members’, across all contact times, indicated that the bond distance for labile Cd was 3.41 Å and for non-labile (or fixed) Cd was 3.47 Å.

AB - The effect of prolonged contact time (up to 130 days) on the immobilization of Cd by sorption to calcium exchanged zeolite-X (CaX), under environmentally relevant conditions, was studied using both isotopic exchange and extended X-ray absorption fine structure spectroscopy (EXAFS). Sorption and isotopic exchange measurements revealed time-dependent Cd sorption and indicated the movement of Cd2+ ions into less accessible sites due to ageing. EXAFS suggested progressive fixation of Cd in the double six-ring (D6R) unit of the CaX structure. Proportional allocation of the apparent Cd–Si bond distance to two ‘end-members’, across all contact times, indicated that the bond distance for labile Cd was 3.41 Å and for non-labile (or fixed) Cd was 3.47 Å.

KW - IONS SYSTEM EXAFS exchange

U2 - 10.1016/j.gca.2008.12.018

DO - 10.1016/j.gca.2008.12.018

M3 - Journal article

VL - 73

SP - 1577

EP - 1587

JO - Geochimica et Cosmochimica Acta

JF - Geochimica et Cosmochimica Acta

SN - 0016-7037

IS - 6

ER -