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Use of an air brush to spray dry samples for X-ray powder diffraction

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Abstract:

The construction and operation of a spray drier is described where the spray is produced using an air brush, essentially a miniature spray gun. The spray-dried products consist of spheres 50-60 m in diameter and typical product recoveries are 80%, a marked improvement over simple two-nozzle systems. The spray-dried samples are easy to load into XRD powder holders and present a smooth surface and relatively constant bulk density to the X-ray beam. Problems of preferred orientation are effectively eliminated and the resulting X-ray powder patterns are completely reproducible by different operators.

Document Type: Research Article

DOI: http://dx.doi.org/10.1180/000985599545984

Publication date: March 1, 1999

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minsoc/cm/1999/00000034/00000001/art00012
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