After a partial deactivation, g-alumina (g-Al2O3) is a good catalyst for selective methylation of 1,2-benzenediol at 260-310 Deg. The main products are the desired 3-methyl-1,2-benzenediol and 2-methoxyphenol, which may be converted in another step into 3-methyl-1,2-benzenediol, giving an overall selectivity for the desired products of 80 to 90%. The catechol forms a strongly chemisorbed surface species on g-alumina and its steric-adsorption model correlates with the kinetic data. [on SciFinder (R)]
Title
Heterogeneous catalytic methylation of catechol
Published in
Chemical Engineering & Technology
Volume
17
Issue
2
Pages
108-11
Date
1994
ISSN
0930-7516
Note
CAN 122:242720
45-4
Industrial Organic Chemicals, Leather, Fats, and Waxes
Inst. Chem. Eng.,Swiss Fed. Inst. Technol.,Lausanne,Switz.
Journal
written in English.
120-80-9 (Catechol) Role: RCT (Reactant), RACT (Reactant or reagent) (alumina catalysts for selective methylation of catechol to methylbenzenediol); 488-17-5P (3-Methyl-1,2-benzenediol) Role: SPN (Synthetic preparation), PREP (Preparation) (alumina catalysts for selective methylation of catechol to methylbenzenediol); 1344-28-1 (g-Alumina) Role: CAT (Catalyst use), USES (Uses) (gamma alumina; alumina catalysts for selective methylation of catechol to methylbenzenediol)
Record creation date
2006-04-18
