Conclusions
-
1.
The IE spectrum of methanol, adsorbed on a surface of γ-Al2O3 dehydrated at 450‡, was studied in the region of 4000-1000 cm−1.
-
2.
Several forms of adsorption were detected within the interval 20–450‡: adsorption on hydroxyl groups of the surface bonded by a hydrogen bond, adsorption with the formation of a surface methylate, a complex with a coordination bond, and carbonate-carboxylate structures.
-
3.
The spectral data, in combination with the previously obtained thermodesorption data, indicate the occurrence of a reaction of dehydration of methanol to dimethyl ether through the surface methylates and a complex with a coordination bond.
-
4.
The carbonate-carboxylate structures are not intermediate compounds in the dehydration of the alcohol, tut are responsible for the occurrence of side reactions.
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The article is published on the basis of a resolution of the Conference of Editors-in-Chief of the Journals of the Academy of Sciences of the USSR from July 12, 1962 as the dissertation work of L. I. Lafer.
Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 11, pp. 2424–2431, November, 1967.