Do you analyze the catalysts used? How is the activity of catalysts determined?
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As the title suggests, we use catalysts merely to detect the nickel and aluminum content in it; however, no analysis is carried out during its use in the workshop. So how can we control the activity of the catalyst? Please have the forum members discuss it
The simplest method: Take 10 pieces of qualitative filter paper, and place a small amount of the activated catalyst (the size of a rice grain) on the filter paper. Observe how many layers of the filter paper the catalyst can burn through; if it can burn through more than 8 layers, it indicates that the catalyst is sufficiently activated and has good activity. There are two ways in which filter paper can be completely burned through: one is a more intense process, and the other is a slower one; however, it is sufficient if the paper can be burned through 8 layers or more, with up to 12 layers being possible in the worst case.
Analysis, Testing, and Characterization of Industrial Catalysts--031http://bbs.hcbbs.com/viewthread.php?tid=275664&highlight=%B4%DF%BB%AF%BC%C1%B7%D6%CE%F6
I really recommend that everyone take a look at the book on the analysis, testing, and characterization of catalysts recommended by Canghai Moderator. As for the reason for rating it 2 stars, it is because this method is simple and easy to apply; moreover, once the catalyst is used in a reaction, its actual catalytic activity can vary over a wide range. So these are just my personal thoughts – thank you all for your help
Our teacher said that the catalysts they use are all analyzed first using infrared spectroscopy or other methods before being put to use
We have used aluminum-nickel and palladium carbon, mainly to measure the content of precious metals, as well as for qualitative detection of activity