ASTM UOP 954 : 2011
Current
The latest, up-to-date edition.
Loss on Ignition (LOI) for Fresh, Regenerated, Used, and Spent Catalysts, Catalyst Supports, and Adsorbents
Hardcopy , PDF
English
19-04-2011
Important note : Users cannot be edited or removed once added to your Multi user PDF.Describes the loss on ignition (LOI) in air, using a specified ignition temperature and time, for fresh, regenerated, used, and spent catalysts, catalyst supports, and molecular sieves of various shapes and sizes.
| DevelopmentNote |
Supersedes ASTM UOP 275. (11/2016)
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| DocumentType |
Standard
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| Pages |
8
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| PublisherName |
American Society for Testing and Materials
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| Status |
Current
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| Supersedes |
This method is for determining the loss on ignition (LOI) in air, using a specified ignition temperature and time, for fresh, regenerated, used, and spent catalysts, catalyst supports, and molecular sieves of various shapes and sizes, including fines. This method is quantitative down to 0.1 mass-%. The method is not water specific; any components that volatilize at the selected ignition temperature, for example, carbon, chlorine, and fluorine, are also included in the LOI value. Some components, for example sulfates, may volatilize fully or partially depending on ignition time and temperature. Mass gains are possible with catalysts that contain reduced metals.
The criteria for selecting the temperature for the LOI are based on the volatility of components of materials. Examples are listed in procedure. Length of time at temperature is dependent on the application of the LOI values. For example, it is important to drive off defined volatiles, such as halogens, for the determination of platinum concentration.
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| ASTM UOP 925 : 1992 | Nickel, Molybdenum, Phosphorus, Cobalt and Aluminum in Fresh Catalysts by ICP-AES |
| ASTM UOP 714 : 2007 | Metals in Miscellaneous Samples by ICP-OES |
| ASTM UOP 766 : 2013 | Piece Density by Mercury Displacement |
| ASTM U 04 : 2013 | Platinum in Fresh Catalysts by Spectrophotometry |
| ASTM UOP 961 : 2012 | Elemental Composition of Zeolites by ICP-OES |
| ASTM UOP 410 : 2014 | Sodium in Catalysts by AAS |
| ASTM UOP 918 : 2012 | Collection and Grinding of Adsorbents and Catalysts for Analysis |
| ASTM U 09 : 2013 | Precision Statements in UOP Methods |
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