THE EFFECT OF LUBRICANT ADDITIVES ON THE DURABILITY OF PLATINUN OXIDISING CATALYSTS

The presence of a metal such as calcium or zinc in a lubricant appears to inhibit the poisoning effect of phosphorus on platinum oxidising catalysts. This is a general conclusion from rig, engine and vehicle tests on lubricants with different additive components. Among the test results reported, a lubricant blend with 2.5% by weight ZDDP (0.22% wt Zn) and another blend with 1.25% wt ZDDP plus enough phosphorous containing ashless anti-oxidant to double the phosphorous content of the lubricant both gave satisfactory performance in terms of catalyst degradation. /GMRL/

• Corporate Authors:

  Society of Automotive Engineers (SAE)

  400 Commonwealth Drive
  Warrendale, PA  United States  15096
• Authors:
  • Fitzerald, W
  • Wilson, JKD
• Publication Date: 1975-2

Media Info

• Pagination: 10 p.

Subject/Index Terms

• TRT Terms: Additives; Antioxidants; Calcium; Catalysts; Durability; Lubricants; Oxidation; Phosphorus; Platinum; Zinc
• Old TRIS Terms: Test results
• Subject Areas: Geotechnology; Highways; Materials; Safety and Human Factors;

Filing Info

• Accession Number: 00098959
• Record Type: Publication
• Report/Paper Numbers: SAE #750447
• Files: TRIS
• Created Date: Oct 18 1975 12:00AM