Specific Features of Application of Different Methods of Analytical Control of Spent Catalysts of the Petrochemical Industry

Resumo

A method of analysis of samples of spent petrochemical catalysts based on acidic decomposition of samples with further determination of platinum by inductively coupled plasma mass spectrometry is developed. The method allows analyzing various brands of catalysts, mixtures, and waste of catalysts formed during regeneration. A comparative study of the results of platinum determination obtained by different analytical methods in samples of several types of catalysts is performed. It is shown that spectrophotometric method of platinum determination in spent alumo-platinum catalysts recommended for certification of batches of catalysts and umpire analysis is not universal. At comparable accuracy indices, the analytical method should be selected taking into account the specific features of a particular batch of catalysts and restrictions of the applied method.