Crystallization of Silver Chromate from Ethanol Via Salt Metathesis Reactions of Solubilized Precursors
Abstract
Admixture of aqueous solutions of silver nitrate and potassium chromate results in immediate precipitation of silver chromate as a red-brown microcrystalline powder, while addition of aqueous silver nitrate solution to a solution of potassium chromate/18-crown-6 in ethanol gives a bright-red precipitate. X-ray powder diffraction shows both materials to be orthorhombic silver chromate. The ethanol-derived sample displays broader diffraction peaks, suggesting smaller crystallite size. Scanning electron microscopy confirms this. The ethanol-derived sample appears amorphous, while the aqueous sample displays well-faceted crystallites approximately 0.5 - 1 micron in size. Nonaqueous crystallization, Complexation-mediated crystallization.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 14, 1993
- Accession Number
- ADA275178
Entities
People
- Kenneth M. Doxsee
Organizations
- University of Oregon