Process for the Preparation of Calcium Superoxide

Details

• Personal Author:
  Ballou EV ; Spitze LA ; Wood PC ; Wydeven TJ Jr.
• Description:
  Calcium superoxide is prepared in high yields by spreading a quantity of calcium peroxide diperoxyhydrate on the surface of a container over an area of 18 to 300 cm2 per gram of diperoxyhydrate; positioning said container in a vacuum chamber on a support structure through which a coolant fluid can be circulated; partially evacuating said vacuum chamber, allowing the temperature of the diperoxyhydrate to reach to a level within the range of about 0 degrees to about 40 degrees C, with the assistance of an external source of heat or liquid coolant, as needed; maintaining the temperature selected for a period of time sufficient to complete the disproproriation of the diperoxyhydrate to calcium superoxide, calcium hydroxide, oxygen and water; while maintaining the partial vacuum, constantly and systematically removing the water as it is formed by sweeping the reacting material with a current of dry inert gas and/or by condensation of said water on a cold surface; backfilling the chamber with a dry inert gas; and finally recovering the calcium superoxide produced. [Description provided by NIOSH]
• Subjects:
  Laboratories Occupational Health Safety
• Keywords:
  Calcium Compounds Calcium Oxide Laboratory Techniques Metal Oxides Metal Refining
• Series:
  Mining Publications
• Document Type:
  Text
• Genre:
  Other
• Place as Subject:
  California ; OSHA Region 9
• CIO:
  National Institute for Occupational Safety and Health (NIOSH)
• Topic:
  Workplace Safety & Health
• Location:
  North America
• Pages in Document:
  1-10
• NIOSHTIC Number:
  nn:10011913
• Citation:
  US Pat 4,101,644 1978 Jul; :1-10
• Federal Fiscal Year:
  1978
• Peer Reviewed:
  False
• Source Full Name:
  United States Patent 4,101,644
• Collection(s):
  National Institute for Occupational Safety and Health
• Main Document Checksum:
  urn:sha-512:2a3b3cd64af6a9a1306f5c57764370ca2b2ee8a4a4e94bbf02df9950e1ce1314213df56fa3fecf4bb33dada2071d81bc76c080fb593549f047e18d1cbf31d48b
• Download URL:
  https://stacks.cdc.gov/view/cdc/220208/cdc_220208_DS1.pdf
• File Type:
  [PDF - 359.69 KB ]