Methanol conversion over ZSM-12, ZSM-22 and EU-1 zeolites: from DME to hydrocarbons production
Catalysis Today, ISSN: 0920-5861, Vol: 304, Page: 39-50
2018
- 38Citations
- 54Captures
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Article Description
Conversion of methanol to dimethyl ether (DME) and hydrocarbons was investigatedover zeolites with several 1-dimensional channel systems: ZSM-12, ZSM-22 and EU-1. The effect of reaction temperature, contact time and Time-On-Stream towards methanol conversion and products selectivity was investigated. It was found that ZSM-22 zeolite exhibits the best performances during conversion of methanol to DME (temperature range 180–240 °C) as consequence of the particular shape selectivity that inhibits coke formation and deactivation. On the contrary, when formation of hydrocarbons is desired (temperature up to 320 °C), ZSM-12 shows the highest activity in terms of light olefin yield with the highest C 3 /C 2 ratio. The low selectivity towards C 2 formation can be associated to the absence of both di- and tri-methyl benzenes formed during the reaction because when these species were detected, a higher ethylene productivity was observed lowering the C 3 /C 2 ratio on the reactor out-stream.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S092058611730559X; http://dx.doi.org/10.1016/j.cattod.2017.08.037; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85028454059&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S092058611730559X; https://dx.doi.org/10.1016/j.cattod.2017.08.037
Elsevier BV
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