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Notes

Conditions and Parameters for TPD Experiments: Supported Metal Catalysis

Previous Altamira Notes have discussed the use of temperature programmed desorption (TPD) for characterizing the surfaces of metallic catalysts1,2 and acid catalysts3. In this note, we discuss the selection of some critical experimental parameters necessary for conducting a successful TPD experiment on supported metal catalysts.  

Development of a New Detection Method for TPO Analysis of Coke Deposits

Today, techniques such as TEM, Laser Raman Spectroscopy, EELS,13C NMR, and temperature-programmed oxidation (TPO) are used to study coked catalysts. Probably the most widely used technique is TPO. This Altamira Note discusses the use of TPO coupled with a new detection method developed by Dr. S.C. Fung and Dr. C.A. Querini at Exxon Research and Engineering Company. This method is simple and permits the continuous monitoring of the rate of coke oxidation.

Development of a Quality Control Procedure for Characterizing Supported Nickel Catalysts

Quality control and instrument maintenance are important functions in all laboratories. Periodically running a QC procedure like the one described in this Note can provide early detection of instrument contamination, failing instrument components, or gas contamination, factors that can negatively affect experimental results. This Altamira Note discusses how a quality control procedure was developed for a supported nickel catalyst used in hydrogenation reactions.