Lenoir, Christophe
[UCL]
Rohr, F
Allahverdiev, A
Stocker, M
Ruiz, Patricio
[UCL]
The deactivation of Pt/MOR catalysts during the isomerisation of n-pentane was studied measuring the catalytic performances under favourable deactivation conditions and using several physicochemical techniques for characterisation: ICP, XRD, XPS, IR-pryridine, NMR, NH3-TPD and CO chemisorption. Results showed that deactivation is favoured by a high density and strength of acid sites, small pore diameters and probably by a small amount of octahedrally co-ordinated aluminium. Deactivation is more limited by larger pore diameters and higher Si/AI ratios. In this case, coke is formed in the deepest part of the pores. Catalysts with higher Si/AI atomic ratios are more difficult to regenerate. The nature of coke is similar in all cases and independent of the Si/Al ratio values.
| Bibliographic reference |
Lenoir, Christophe ; Rohr, F ; Allahverdiev, A ; Stocker, M ; Ruiz, Patricio. Deactivation of Pt/mordenite (MOR) during the hydroisomerisation of n-pentane.14th International Zeolite Conference on Recent Advances in the Science and Technology of Zeolites and Related Materials (Catalys Soc S Africa, Cape Town(South Africa), Apr 25-30, 2004). In: Studies in Surface Science and Catalysis, Vol. 154, p. 2371-2379 (2004) |
| Permanent URL |
http://hdl.handle.net/2078.1/61003 |
