J. Zheng et al., THE FUNCTION OF ZEOLITE ON PT AUTOREDUCTION AND DISPERSION IN PT L AND PT/BETA CATALYSTS/, Catalysis letters, 37(1-2), 1996, pp. 25-28
TPR, CO-FTIR and Xe-129 NMR spectroscopic techniques were used to meas
ure the distribution of platinum species after the calcination of Pt/L
and Pt/beta zeolites. Autoreduction which occurred in Pt/beta zeolite
was avoided in the channel of L zeolite. Pt particles dispersed well
and exhibited excellent reactivity for the aromatization of n-hexane i
n L zeolite.