NB/SH/T 0961-2017 in English

The industry standard "Determination of Alumina Content in Catalytic Cracking Catalysts by EDTA Titration Method," with the standard number NB/SH/T 0961-2017, was issued on December 27, 2017, and came into effect on June 1, 2018. This standard provides a method for determining the alumina content in catalytic cracking catalysts, which is crucial for the performance and efficiency of the catalysts used in petroleum refining processes. The EDTA titration method specified in this standard is a widely recognized analytical technique known for its accuracy and reliability in quantifying metal ions, including aluminum.

The method involves dissolving the catalyst sample and then complexing the aluminum ions with EDTA (ethylenediaminetetraacetic acid), a chelating agent that forms stable complexes with metal ions. The titration process measures the amount of EDTA required to complex all the aluminum ions present in the sample, allowing for the calculation of the alumina content. This method is particularly useful in the petroleum industry, where precise control of catalyst composition is essential for optimizing the catalytic cracking process, which converts heavy hydrocarbon fractions into lighter, more valuable products.

The standard outlines the necessary reagents, equipment, and procedural steps to ensure consistent and accurate results. It also provides guidelines for sample preparation, titration conditions, and data interpretation. By adhering to this standard, laboratories can ensure that their analytical results are comparable and reliable, facilitating quality control and process optimization in the production and use of catalytic cracking catalysts.