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Effect of Water Addition on the Conversion of Dimethyl Ether to Light Olefins over SAPO-34  

Baek, Seung-Chan (New Chemistry Research Division, Korea Research Institute of Chemical Technology)
Lee, Yun-Jo (New Chemistry Research Division, Korea Research Institute of Chemical Technology)
Jun, Ki-Won (New Chemistry Research Division, Korea Research Institute of Chemical Technology)
Publication Information
Korean Chemical Engineering Research / v.44, no.4, 2006 , pp. 345-349 More about this Journal
Abstract
Conversion of DME (dimethyl ether) or methanol to light olefins (ethylene, propylene, butenes) over SAPO-34 were systematically studied, where it was observed that DME was dehydrated to light olefins and partially converted to by-products such as CO and $CO_2$ at various reaction temperatures on the time-on-stream. SAPO-34 catalyst during the DTO (dimetyl ether-to-olefins) reaction was significantly deactivated compared with MTO (methanol-toolefins) reaction. By addition of water to the reaction feed, the yield to light olefins was not only increased, but the life time of the catalyst was also prolonged by the suppression of the coke formation by steam.
Keywords
DME; Methanol; Light Olefins; SAPO-34; Water Effects;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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