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Regeneration of a catalyst based on a SAPO‐34 used in the transformation of methanol into olefins
Author(s) -
Aguayo Andrés T,
Gayubo Ana G,
Atutxa Alaitz,
Olazar Martin,
Bilbao Javier
Publication year - 1999
Publication title -
journal of chemical technology and biotechnology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.64
H-Index - 117
eISSN - 1097-4660
pISSN - 0268-2575
DOI - 10.1002/(sici)1097-4660(199911)74:11<1082::aid-jctb141>3.0.co;2-d
Subject(s) - catalysis , methanol , transformation (genetics) , regeneration (biology) , chemistry , chemical engineering , organic chemistry , biology , engineering , microbiology and biotechnology , biochemistry , gene
The regeneration by coke combustion of a catalyst based on a SAPO‐34 used in the transformation of methanol into olefins (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. © 1999 Society of Chemical Industry