Approaches and Methods to Study Thermal Stability of Model-Supported Catalysts

3 Approaches and Methods to Study Thermal Stability of Model-Su[yoiled Catalysts. - A number of techniques can be applied to the investigation of model-supported catalysts. They include TEM, controlled atmosphere electron microscopy (CAEM), temperature-programmed 

Metal Support concen. (pmol/m Atm Pressure (kPa) Temp. (K) dia (nm) Reference 

Studies of sintering and redispersion involving model catalysts reported through 1980 were reviewed by Wanke and Bolivar. A list of these and more recent studies through 1991 are provided in Table 2. Most of these were electron microscopy studies of alumina-su rted Ni, Fe, Pd, and Pt, although a few other metals (Co, Ir, Rh), bimetallics (of Co, Fe, Ni, Pd, Rh, and Pt), and supports (silica, titania, and carbon) are represented. 

Metal Support Metal concen. (pmol/m Atm Sintering conditions Temp. Time (K) (h) Measure method Reference 

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