Abstract
Positron Emission Profiling (PEP) has been used for in-situ measurement of the surface coverage of H-mordenite by n-hexane, as a function of hexane partial pressure, at the elevated temperatures typically used for hydroisomerization by monitoring the retention time of an injected radio-labelled pulse of n-hexane. The labelled molecules ( 11 CH 3 C 5 H 11 ) were produced via a two-step alkene homologation reaction in which 11 C, produced using a cyclotron, was added to 1-pentene. The PEP method described is similar to the “tracer pulse technique” however it has the significant advantage of in-situ imaging of the pulse.
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