Prepare the Sample
To achieve gains in productivity and reduction in analyzer maintenance, as well as improved data quality, dry the sample material in a shallow pan at 150 ºC or higher for one hour. A vacuum oven may be used, although it is not necessary to do so. Use of a vacuum oven is particularly beneficial if the oven is backfilled with dry nitrogen prior to opening. Once the sample is dried, minimize any re-exposure to the atmosphere.
The drying of samples prior to analysis is important, especially for sample types such as fluid cracking catalysts, porous silicas, porous aluminas, and zeolites, which are almost impossible to evacuate without fluidization unless first dried.
The preparation process consists of:
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