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Regeneration of a catalyst based on a SAPO-34 used in the transformation of methanol into olefins

✍ Scribed by Andrés T Aguayo; Ana G Gayubo; Alaitz Atutxa; Martin Olazar; Javier Bilbao

Publisher
Wiley (John Wiley & Sons)
Year
1999
Tongue
English
Weight
129 KB
Volume
74
Category
Article
ISSN
0268-2575

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✦ Synopsis

The regeneration by coke combustion of a catalyst based on a SAPO-34 used in the transformation of methanol into ole®ns (ethene and propene) has been studied. It has been observed that coke combustion kinetics are strongly dependent on the nature of the coke (H/C ratio), which in turn is a consequence of the reaction conditions (especially of the water content in the feed) and of the ageing level of the coke prior to its combustion. A severe ageing treatment is needed in order for combustion kinetics to be reproducible. Combustion is delayed due to the fact that coke is not an inert material but is bound to the acid sites.

📜 SIMILAR VOLUMES

Deactivation by coke of a catalyst based
Deactivation by coke of a catalyst based on a SAPO-34 in the transformation of methanol into olefins
✍ Andrés T Aguayo; Ana E Sánchez del Campo; Ana G Gayubo; Ana Tarrío; Javier Bilba 📂 Article 📅 1999 🏛 Wiley (John Wiley & Sons) 🌐 English ⚖ 207 KB 👁 2 views

When methanol is converted to oleüns on a SAPO-34 catalyst between 350 and 425ÄC, there is a rapid initial formation of coke, followed by a slower rate of coke deposition. The rate of coke formation decreases with increasing temperature, and with progression through the catalyst bed. The coke comple