The catalytic conversion of methanol to light olefins (MTO), especially ethylene, propylene and butene, is an interesting and promising way of converting natural gas and coal to chemicals via methanol1. Propylene and butene are not only the intermediates in the conversion of methanol to gasoline, but also are important intermediates in the production of liquefied petroleum gas (LPG) As a results, a handful paper considered the MTO process , a few attempts were made to selectivity produce propylene and butene from methanol on zeolites catalysts.
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