Study of methanol and isobutanol coupling over acid catalysts |
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Authors: | Elbieta Sikora and Jan Ogonowski |
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Institution: | (1) Institute of Organic Chemistry and Technology, Cracow University of Technology, ul. Warszawska 24, 31-155 Cracow, Poland |
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Abstract: | The coupling of methanol and isobutanol was carried out over selected acid catalysts. An amorphous silica-alumina, a zeolite
and aluminas were tested as catalysts of the coupling. The correlation between the catalysts acidity and their activity and
selectivity was studied. The catalytic tests were carried out in a fixed-bed flow microreactor working on line with a gas-chromatograph.
The acidic properties of the catalysts were followed by IR studies of pyridine adsorption. The results obtained proved that
the strength and the concentration of acid sites on the catalysts surface effected the alcohols conversion to ethers. It was
found that the undesirable dehydration of isobutanol to isobutene was catalyzed by stronger acid sites than those required
for the etherification reaction.
This revised version was published online in June 2006 with corrections to the Cover Date. |
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Keywords: | isobutanol ethers activity and acidity of catalyst methanol Conversion |
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