How do you approach analyzing and troubleshooting issues related to catalyst deactivation or degradation in petrochemical engineering?

Sample interview questions: How do you approach analyzing and troubleshooting issues related to catalyst deactivation or degradation in petrochemical engineering?

Sample answer:

Approach to Catalyst Deactivation and Degradation Analysis and Troubleshooting

  • Initial Assessment:

    • Review process conditions (temperature, pressure, feed composition) and catalyst characteristics (type, age, preparation).
    • Identify potential deactivation mechanisms based on known catalyst aging pathways.
  • Physical Characterization:

    • Conduct visual inspections for changes in catalyst morphology, color, or texture.
    • Utilize techniques such as BET surface area analysis, X-ray diffraction, and SEM to evaluate catalyst surface changes, crystal structure, and pore structure.
  • Chemical Characterization:

    • Employ X-ray photoelectron spectroscopy (XPS), Fourier transform infrared spectroscopy (FTIR), or mass spectrometry to identify surface contaminants, reaction products, or degradation products.
    • Perform chemical leaching or extraction to quantify metal loss or deposition.
  • Activity and Selectivity Testing:

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