Surface carbon formation on pt/ˠ-a12o3 from c3 and c4 hydrocarbons Part ii: characterization of coked samples

Authors

• L.L. MKAYULA, Department of Chemistry, University of Dar es Salaam, P.O. Box 35061, Dar es Salaam, Tanzania.Follow

Section

Physical Sciences

Abstract

The total surface area, pore size distribution, metal surface area, particle size and topography of coked Pt/γ-1₂O₃ catalyst samples used in in part 1 of this series were measured and compared with those of a fresh catalyst. No significant changes in total surface areas of the coked catalyst was observed despite a high coke content in some samples. This is interpreted in terms of partial narrowing of mesopores that was confirmed by pore size distributions observations of high temperature coked samples. The platinum metal surface area of high temperature coked catalysts decreased with increase in temperature and this was confirmed by Transmission Electron Microscopy which revealed an increase in metal particles size with increase in temperature. The topographies of fresh and coked samples diffed but no quantitative comparisons could be made.

Recommended Citation

MKAYULA, L.L. (1992) "Surface carbon formation on pt/ˠ-a12o3 from c3 and c4 hydrocarbons Part ii: characterization of coked samples," Tanzania Journal of Science: Vol. 18: Iss. 1, Article 3.
Available at:https://doi.org/10.65085/2507-7961.2409

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This work is licensed under a Creative Commons Attribution 4.0 License.