ASTM D3943-10
Standard Test Method for Total Molybdenum in Fresh Alumina-Base Catalysts

Standard No.
ASTM D3943-10
Release Date
2010
Published By
American Society for Testing and Materials (ASTM)
Status
Replace By
ASTM D3943-10(2015)
Latest
ASTM D3943-21
Scope

This test method sets forth a procedure by which catalyst samples can be compared either on an interlaboratory or intralaboratory basis. It is anticipated that catalyst producers and users will find this method of value.

1.1 This test method covers the determination of molybdenum in alumina-base catalysts and has been cooperatively tested at molybdenum concentrations from 8 to 18 weight %, expressed as MoO3. Any component of the catalyst other than molybdenum such as iron, tungsten, etc., which is capable of being oxidized by either ferric or ceric ions after being passed through a zinc-amalgam reductor column (Jones reductor) will interfere.

1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

ASTM D3943-10 history

  • 2021 ASTM D3943-21 Standard Test Method for Total Molybdenum in Fresh Alumina-Base Catalysts
  • 2010 ASTM D3943-10(2015) Standard Test Method for Total Molybdenum in Fresh Alumina-Base Catalysts
  • 2010 ASTM D3943-10 Standard Test Method for Total Molybdenum in Fresh Alumina-Base Catalysts
  • 2004 ASTM D3943-04 Standard Test Method for Total Molybdenum in Fresh Alumina-Base Catalysts
  • 2000 ASTM D3943-00 Standard Test Method for Total Molybdenum in Fresh Alumina-Base Catalysts



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