Lewis acid-base pairs are the active sites in the thiolation of methanol, forming surface alcoholates and catalyze the corresponding substitution of the oxygen for the thiol groups in a Langmuir-Hinshelwood mechanism. Strong Lewis acid sites catalyze the condensation of methanol to form dimethyl ether, via the formation of methoxy groups that react with gas phase methanol. Suitable catalysts have weakly acidic Lewis acid sites and stronger base sites, such as cesium cation loaded metal oxides or Al2O3-MgO mixed oxides.
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Lewis acid-base pairs are the active sites in the thiolation of methanol, forming surface alcoholates and catalyze the corresponding substitution of the oxygen for the thiol groups in a Langmuir-Hinshelwood mechanism. Strong Lewis acid sites catalyze the condensation of methanol to form dimethyl ether, via the formation of methoxy groups that react with gas phase methanol. Suitable catalysts have weakly acidic Lewis acid sites and stronger base sites, such as cesium cation loaded metal oxides or...
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