NDLI: Production of antiknock additive in gasoline (methyl tert-butyl ether, MTBE) using zeolite catalysts

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Production of antiknock additive in gasoline (methyl tert-butyl ether, MTBE) using zeolite catalysts

Content Provider	Semantic Scholar
Author	Aboul-Fotouh, Samch M.
Copyright Year	2004
Abstract	The etherification of a mixture of methanol and t-butanol (1:1 mol) on hydrogen-, fluorinated-, alumina-deficient and aluminum-exchanged forms of ZSM-5, mordenite and Y zeolites was carried out in a flow reactor operated at atmospheric pressure and temperature of 50-400 °C using a flow of nitrogen 20 cm 3 min - 1 . The effect of mcthanol/t-butanol molar ratio of 0.5-3.0 and carrier gas flow rates of 10-60 em 3 min - 1 was studied. The activities of these zeolite catalysts for MTBE production were correlated with their acid sites strength distribution, using temperature-programmed desorption (TPD) of ammonia in a differential scanning calorimeter (DSC), as well as with the channels opening dimensions and Si/Al ratio of the zeolites. It is shown that the high acidity and bulk Si/Al ratio has a marked influence on the formation for MTBE. The hydrophobic/hydrophilic character of the catalysts was also discussed. The alumina-dificicnt and fluorination of a zeolite increases its framework Si/Al ratio, thus increases its hydrophobicity, whereas Al-exchange may decrease this ratio and increases its hydrophilicity.
Starting Page	293
Ending Page	304
Page Count	12
File Format	PDF HTM / HTML
Volume Number	51
Alternate Webpage(s)	http://acta-arhiv.chem-soc.si/51/51-2-293.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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