Conversion of dimethyl ether into C2-C4 olefins on zeolite catalysts

The effect of the nature of the metal introduced into HZSM-5 on the properties of the catalysts for the synthesis of olefins from dimethyl ether was studied. By means of the ammonia temperature-programmed desorption technique, it was shown that a decrease in the total amount of acid sites increases...

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Bibliographic Details
Published in:Petroleum chemistry 2009, Vol.49 (1), p.42-46
Main Authors: Kolesnichenko, N. V., Yashina, O. V., Markova, N. A., Biryukova, E. N., Goryainova, T. I., Kulumbegov, R. V., Khadzhiev, S. N., Kitaev, L. E., Yushchenko, V. V.
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Industrial Chemistry/Chemical Engineering
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Summary:The effect of the nature of the metal introduced into HZSM-5 on the properties of the catalysts for the synthesis of olefins from dimethyl ether was studied. By means of the ammonia temperature-programmed desorption technique, it was shown that a decrease in the total amount of acid sites increases the selectivity for lower olefins. As the ratio of the medium to strong acid sites increases, the yield of olefins increases. The effect of the nature of gaseous additives in the feedstock on the selectivity for lower olefins was studied at T = 340°C, p = 0.1 MPa, and ν 0 = 2000 h −1 .
ISSN:0965-5441
1555-6239
DOI:10.1134/S0965544109010083