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X-Ray Powder Diffraction and Single-Crystal Data for the Isomorphous Series (Fe,Al)3(K,NH4, H3O)H14(PO4)8 ·4H2O

Published online by Cambridge University Press:  10 January 2013

Kjell R. Waerstad  and
A. William Frazier
Kjell R. Waerstad
Affiliation:
Division of Research, National Fertilizer Development Center, Tennessee Valley Authority, Muscle Shoals, Alabama 35660
A. William Frazier
Affiliation:
Division of Research, National Fertilizer Development Center, Tennessee Valley Authority, Muscle Shoals, Alabama 35660
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Abstract

X-ray powder diffraction and single-crystal data are reported for a series of isomorphous compounds with the general chemical composition (Fe,Al)3(K,NH4,H3O)H14 (PO4)8·4H2O. The compounds are monoclinic with space group C2/c. Unit-cell parameters were determined on the mixed salt (Fe0.84,Al0.16)3KH14(PO4)8·4H2O, as obtained from sludge precipitated in commercial shipping-grade wet-process phosphoric acid. Single-crystal studies and refined powder diffraction data provided unit-cell parameters of a= 16.908(9) Å, b = 9.588(2) Å, c = 17.539(5) Å, and β = 91.06(4)°.

Type
Research Article
Information
Powder Diffraction , Volume 2 , Issue 3 , September 1987 , pp. 187 - 190
Copyright
Copyright © Cambridge University Press 1987

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References

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