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The deactivation by coke of a HBEA zeolite (Si/Al=15 crystal size=0.02μm) was investigated using the methylcyclohexane (mcha) model reaction at different temperatures and several contact times. At 350 and 450°C, C 2 –C 7 olefins and paraffins (cracking products), dimethylcyclopentanes and ethylcyclopentane (isomers), aromatics (benzene, toluene, xylenes) and coke were formed. At 250°C...
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