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Cover Picture: Suppression of the Aromatic Cycle in Methanol‐to‐Olefins Reaction over ZSM‐5 by Post‐Synthetic Modification Using Calcium (ChemCatChem 19/2016)
Author(s) -
Yarulina Irina,
Bailleul Simon,
Pustovarenko Alexey,
Martinez Javier Ruiz,
Wispelaere Kristof De,
Hajek Julianna,
Weckhuysen Bert M.,
Houben Klaartje,
Baldus Marc,
Van Speybroeck Veronique,
Kapteijn Freek,
Gascon Jorge
Publication year - 2016
Publication title -
chemcatchem
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201601185
Subject(s) - catalysis , chemistry , methanol , coke , zsm 5 , lewis acids and bases , selectivity , organic chemistry , zeolite
The Front Cover shows Ca‐ZSM‐5 as a “super‐catalyst” fighting coke – the evil of MTO world.In their Full Paper, I. Yarulina et al. investigated the mechanism of methanol to olefins (MTO) reaction, which is characterized by the presence of two competing cycles – olefinic and aromatic. The latter is responsible for catalyst deactivation since aromatic species act as coke precursors. It was shown that post‐synthetic incorporation of calcium in ZSM‐5 by different methods leads to transformation of Brønsted acid sites to Lewis ones. After this modification, ZSM‐5 becomes a “super‐catalyst”, which is able to suppress formation of aromatics not only prolonging catalyst lifetime but also increasing selectivity to the desired propylene through fighting coke – the evil of MTO world. More information can be found in the Full Paper by I. Yarulina et al. on page 3057 in Issue 19, 2016 (DOI: 10.1002/cctc.201600650).