Report of Investigations 8621: Thermodynamic Properties of Synthetic Acmite (NaFe3+Si2O6)

Details

• Personal Author:
  Benington, K. O. ; Brown, Robert R.
• Corporate Authors:
  United States. Bureau of Mines
• Description:
  The thermodynamic properties of synthetic acmite, nafe3+si2o6, were determined by the Bureau of Mines. The enthalpy of formation was determined by hydrofluoric acid solution calorimetry. The values of the standard enthalpy of formation at 298.15 K, hf deg 298.15, From the elements and from the oxides, h deg 298.15, are hf deg 298.15 = -615.87 +/- 0.71 Kcal/mole, h deg 298.15 (From oxides) = -32.08 +/- 0.53 Kcal/mole. Various experimental data were combined with other data from the literature to calculate all the related thermodynamic properties in the range of 298 to 1,263 k. The standard Gibbs energy of formation is gf deg 298.15 = -575.8 Kcal/mole. [Description provided by NIOSH]
• Subjects:
  Chemistry Mining Occupational Health Safety
• Series:
  Mining Publications
• Subseries:
  Report of Investigations
• ISSN:
  1066-5552 (print)
• Publisher:
  United States. Bureau of Mines
• Document Type:
  Text
• Genre:
  Case Report
• Rights:
  Public Domain
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Division:
  ALRC - Albany Research Center
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  18 pdf pages
• NIOSHTIC Number:
  nn:10006316
• Federal Fiscal Year:
  1982
• Peer Reviewed:
  False
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:adf3b11a46ed47d7c19d4d4af4037c61764246a373c9133d31797363c3f2a8d2d08cbd92327b65e7db86df201ee0876790b9e185c5959d4f3f5dd83cef4d39e9
• Download URL:
  https://stacks.cdc.gov/view/cdc/201779/cdc_201779_DS1.pdf
• File Type:
  [PDF - 532.84 KB ]