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Synthesis and characterization of dawsonite.
Jackson-J Jr.; Huggins-CW; Ampian-SG
NTIS: PB 211 949 :1-14
Synthetic dawsonite [naal(oh)2co3] has been prepared with crystallinity similar to that of dawsonite found in oil shale deposits of the Piceance Creek Area of Colorado. Optimum experimental conditions were as follows: na/al atomic ratio, 43; temperature, 175 deg to 200 deg c; pco2, 15 psig; and reaction time, 5 hr. Chemical and spectrographic analysis revealed that the synthetic dawsonite was of high purity and was essentially stoichiometric. Similarity of the synthetic to natural dawsonite, demonstrated by x-ray diffraction, infrared spectrophotometry, and electron microscopy, suggests its suitability as a standard.
IH; Report of Investigation;
NTIS Accession No.
NTIS: PB 211 949
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division