The reaction of methanol to form hydrocarbons over zeolite catalysts is an important option for conversion of natural gas or coal to liquid fuels. We have shown previously via beamtime on the MERLIN spectrometer that INS can observe the hydrocarbon species present in the pores of a working commercial catalyst. MERLIN was selected for this role because it provided access to vibrational transitions >2000 cm-1. However, it is a challenging task to discern the molecular identity of the retained hydrocarbon species in the MERLIN spectra, due to the restricted resolution of this instrument. To address this constraint, we wish to use the recently up-graded TOSCA spectrometer, which possesses superior resolution in the diagnostically important fingerprint region of the spectrum (1600-400 cm-1).