Catalyst acid / base properties regulation to control the selectivity in gas-phase methylation of catechol

The reaction of catechol methylation by methanol in gas-phase over modified g-alumina was studied with the aim to correlate catalytic activity and selectivity to acid/base properties of the catalysts. Catalytic activity and selectivity towards guaiacol formation (O-alkylation) was found to increase with surface acidity. A 20-fold change in the O/C-methylation ratio was achieved by varying the catalyst acid/base properties, keeping const. the other reaction parameters. [on SciFinder (R)]


Published in:
Heterogeneous catalysis and fine chemicals IV, 149-156
Year:
1997
Publisher:
Amsterdam, Elsevier
Keywords:
Note:
CAN 129:135769 22-4 Physical Organic Chemistry Institute of Chemical Engineering, Swiss Federal Institute of Technology (EPFL),Lausanne,Switz. Journal 0167-2991 written in English. 90-05-1P (Guaiacol) Role: IMF (Industrial manufacture), SPN (Synthetic preparation), PREP (Preparation) (catalyst acid / base properties regulation in selectivity control of gas-phase methylation of pyrocatechol); 120-80-9 (Pyrocatechol) Role: PEP (Physical, engineering or chemical process), RCT (Reactant), PROC (Process), RACT (Reactant or reagent) (catalyst acid / base properties regulation in selectivity control of gas-phase methylation of pyrocatechol); 1344-28-1 (-Alumina) Role: CAT (Catalyst use), PEP (Physical, engineering or chemical process), PRP (Properties), PROC (Process), USES (Uses) (g-; catalyst acid / base properties regulation in selectivity control of gas-phase methylation of pyrocatechol)
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 Record created 2006-04-18, last modified 2018-03-17


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