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A mechanism for the habit modification of ammonium dihydrogen phosphate crystals in the presence of ionic species in aqueous solution

✍ Scribed by Dr. R. J. Davey; Prof. J. W. Mullin


Publisher
John Wiley and Sons
Year
1976
Tongue
English
Weight
313 KB
Volume
11
Category
Article
ISSN
0232-1300

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✦ Synopsis


Abstract

Ammonium dihydrogen phosphate (ADP) crystals develop new high index faces when grown from aqueous solution containing up to 1000 ppm of added CrCl~3~ · 6 H~2~O. The crystallographic nature of these faces has been studied as a function of the CrCl~3~ · 6 H~2~O concentration in the growth solution (24.0°C, σ = 0.06) and their high morphological importance is explained, using a modification of the Hartman‐Perdok theory of crystal morphology, but postulating that the adsorption of impurity species at specific sites transform K‐faces into pseudo‐F‐faces.